home/wuectly/www/libraries/f0f/database/iterator/sqlsrv.php 0000604 00000002430 15245567753 0020121 0 ustar 00 cursor);
}
/**
* Method to fetch a row from the result set cursor as an object.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*/
protected function fetchObject()
{
return @sqlsrv_fetch_object($this->cursor, $this->class);
}
/**
* Method to free up the memory used for the result set.
*
* @return void
*/
protected function freeResult()
{
@sqlsrv_free_stmt($this->cursor);
}
}
home/wuectly/www/libraries/f0f/database/driver/sqlsrv.php 0000604 00000064606 15245604354 0017565 0 ustar 00 disconnect();
}
/**
* Connects to the database if needed.
*
* @return void Returns void if the database connected successfully.
*
* @since 12.1
* @throws RuntimeException
*/
public function connect()
{
if ($this->connection)
{
return;
}
// Build the connection configuration array.
$config = array(
'Database' => $this->options['database'],
'uid' => $this->options['user'],
'pwd' => $this->options['password'],
'CharacterSet' => 'UTF-8',
'ReturnDatesAsStrings' => true);
// Make sure the SQLSRV extension for PHP is installed and enabled.
if (!function_exists('sqlsrv_connect'))
{
throw new RuntimeException('PHP extension sqlsrv_connect is not available.');
}
// Attempt to connect to the server.
if (!($this->connection = @ sqlsrv_connect($this->options['host'], $config)))
{
throw new RuntimeException('Database sqlsrv_connect failed');
}
// Make sure that DB warnings are not returned as errors.
sqlsrv_configure('WarningsReturnAsErrors', 0);
// If auto-select is enabled select the given database.
if ($this->options['select'] && !empty($this->options['database']))
{
$this->select($this->options['database']);
}
// Set charactersets.
$this->utf = $this->setUtf();
}
/**
* Disconnects the database.
*
* @return void
*
* @since 12.1
*/
public function disconnect()
{
// Close the connection.
if (is_resource($this->connection))
{
foreach ($this->disconnectHandlers as $h)
{
call_user_func_array($h, array( &$this));
}
sqlsrv_close($this->connection);
}
$this->connection = null;
}
/**
* Get table constraints
*
* @param string $tableName The name of the database table.
*
* @return array Any constraints available for the table.
*
* @since 12.1
*/
protected function getTableConstraints($tableName)
{
$this->connect();
$query = $this->getQuery(true);
$this->setQuery(
'SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_NAME = ' . $query->quote($tableName)
);
return $this->loadColumn();
}
/**
* Rename constraints.
*
* @param array $constraints Array(strings) of table constraints
* @param string $prefix A string
* @param string $backup A string
*
* @return void
*
* @since 12.1
*/
protected function renameConstraints($constraints = array(), $prefix = null, $backup = null)
{
$this->connect();
foreach ($constraints as $constraint)
{
$this->setQuery('sp_rename ' . $constraint . ',' . str_replace($prefix, $backup, $constraint));
$this->execute();
}
}
/**
* Method to escape a string for usage in an SQL statement.
*
* The escaping for MSSQL isn't handled in the driver though that would be nice. Because of this we need
* to handle the escaping ourselves.
*
* @param string $text The string to be escaped.
* @param boolean $extra Optional parameter to provide extra escaping.
*
* @return string The escaped string.
*
* @since 12.1
*/
public function escape($text, $extra = false)
{
$result = addslashes($text);
$result = str_replace("\'", "''", $result);
$result = str_replace('\"', '"', $result);
$result = str_replace('\/', '/', $result);
if ($extra)
{
// We need the below str_replace since the search in sql server doesn't recognize _ character.
$result = str_replace('_', '[_]', $result);
}
return $result;
}
/**
* Determines if the connection to the server is active.
*
* @return boolean True if connected to the database engine.
*
* @since 12.1
*/
public function connected()
{
// TODO: Run a blank query here
return true;
}
/**
* Drops a table from the database.
*
* @param string $tableName The name of the database table to drop.
* @param boolean $ifExists Optionally specify that the table must exist before it is dropped.
*
* @return F0FDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 12.1
*/
public function dropTable($tableName, $ifExists = true)
{
$this->connect();
$query = $this->getQuery(true);
if ($ifExists)
{
$this->setQuery(
'IF EXISTS(SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = ' . $query->quote($tableName) . ') DROP TABLE ' . $tableName
);
}
else
{
$this->setQuery('DROP TABLE ' . $tableName);
}
$this->execute();
return $this;
}
/**
* Get the number of affected rows for the previous executed SQL statement.
*
* @return integer The number of affected rows.
*
* @since 12.1
*/
public function getAffectedRows()
{
$this->connect();
return sqlsrv_rows_affected($this->cursor);
}
/**
* Method to get the database collation in use by sampling a text field of a table in the database.
*
* @return mixed The collation in use by the database or boolean false if not supported.
*
* @since 12.1
*/
public function getCollation()
{
// TODO: Not fake this
return 'MSSQL UTF-8 (UCS2)';
}
/**
* Method to get the database connection collation, as reported by the driver. If the connector doesn't support
* reporting this value please return an empty string.
*
* @return string
*/
public function getConnectionCollation()
{
// TODO: Not fake this
return 'MSSQL UTF-8 (UCS2)';
}
/**
* Get the number of returned rows for the previous executed SQL statement.
*
* @param resource $cursor An optional database cursor resource to extract the row count from.
*
* @return integer The number of returned rows.
*
* @since 12.1
*/
public function getNumRows($cursor = null)
{
$this->connect();
return sqlsrv_num_rows($cursor ? $cursor : $this->cursor);
}
/**
* Retrieves field information about the given tables.
*
* @param mixed $table A table name
* @param boolean $typeOnly True to only return field types.
*
* @return array An array of fields.
*
* @since 12.1
* @throws RuntimeException
*/
public function getTableColumns($table, $typeOnly = true)
{
$result = array();
$table_temp = $this->replacePrefix((string) $table);
// Set the query to get the table fields statement.
$this->setQuery(
'SELECT column_name as Field, data_type as Type, is_nullable as \'Null\', column_default as \'Default\'' .
' FROM information_schema.columns WHERE table_name = ' . $this->quote($table_temp)
);
$fields = $this->loadObjectList();
// If we only want the type as the value add just that to the list.
if ($typeOnly)
{
foreach ($fields as $field)
{
$result[$field->Field] = preg_replace("/[(0-9)]/", '', $field->Type);
}
}
// If we want the whole field data object add that to the list.
else
{
foreach ($fields as $field)
{
if (stristr(strtolower($field->Type), "nvarchar"))
{
$field->Default = "";
}
$result[$field->Field] = $field;
}
}
return $result;
}
/**
* Shows the table CREATE statement that creates the given tables.
*
* This is unsupported by MSSQL.
*
* @param mixed $tables A table name or a list of table names.
*
* @return array A list of the create SQL for the tables.
*
* @since 12.1
* @throws RuntimeException
*/
public function getTableCreate($tables)
{
$this->connect();
return '';
}
/**
* Get the details list of keys for a table.
*
* @param string $table The name of the table.
*
* @return array An array of the column specification for the table.
*
* @since 12.1
* @throws RuntimeException
*/
public function getTableKeys($table)
{
$this->connect();
// TODO To implement.
return array();
}
/**
* Method to get an array of all tables in the database.
*
* @return array An array of all the tables in the database.
*
* @since 12.1
* @throws RuntimeException
*/
public function getTableList()
{
$this->connect();
// Set the query to get the tables statement.
$this->setQuery('SELECT name FROM ' . $this->getDatabase() . '.sys.Tables WHERE type = \'U\';');
$tables = $this->loadColumn();
return $tables;
}
/**
* Get the version of the database connector.
*
* @return string The database connector version.
*
* @since 12.1
*/
public function getVersion()
{
$this->connect();
$version = sqlsrv_server_info($this->connection);
return $version['SQLServerVersion'];
}
/**
* Inserts a row into a table based on an object's properties.
*
* @param string $table The name of the database table to insert into.
* @param object &$object A reference to an object whose public properties match the table fields.
* @param string $key The name of the primary key. If provided the object property is updated.
*
* @return boolean True on success.
*
* @since 12.1
* @throws RuntimeException
*/
public function insertObject($table, &$object, $key = null)
{
$fields = array();
$values = array();
$statement = 'INSERT INTO ' . $this->quoteName($table) . ' (%s) VALUES (%s)';
foreach (get_object_vars($object) as $k => $v)
{
// Only process non-null scalars.
if (is_array($v) or is_object($v) or $v === null)
{
continue;
}
if (!$this->checkFieldExists($table, $k))
{
continue;
}
if ($k[0] == '_')
{
// Internal field
continue;
}
if ($k == $key && $key == 0)
{
continue;
}
$fields[] = $this->quoteName($k);
$values[] = $this->Quote($v);
}
// Set the query and execute the insert.
$this->setQuery(sprintf($statement, implode(',', $fields), implode(',', $values)));
if (!$this->execute())
{
return false;
}
$id = $this->insertid();
if ($key && $id)
{
$object->$key = $id;
}
return true;
}
/**
* Method to get the auto-incremented value from the last INSERT statement.
*
* @return integer The value of the auto-increment field from the last inserted row.
*
* @since 12.1
*/
public function insertid()
{
$this->connect();
// TODO: SELECT IDENTITY
$this->setQuery('SELECT @@IDENTITY');
return (int) $this->loadResult();
}
/**
* Method to get the first field of the first row of the result set from the database query.
*
* @return mixed The return value or null if the query failed.
*
* @since 12.1
* @throws RuntimeException
*/
public function loadResult()
{
$ret = null;
// Execute the query and get the result set cursor.
if (!($cursor = $this->execute()))
{
return null;
}
// Get the first row from the result set as an array.
if ($row = sqlsrv_fetch_array($cursor, SQLSRV_FETCH_NUMERIC))
{
$ret = $row[0];
}
// Free up system resources and return.
$this->freeResult($cursor);
// For SQLServer - we need to strip slashes
$ret = stripslashes($ret);
return $ret;
}
/**
* Execute the SQL statement.
*
* @return mixed A database cursor resource on success, boolean false on failure.
*
* @since 12.1
* @throws RuntimeException
* @throws Exception
*/
public function execute()
{
$this->connect();
if (!is_resource($this->connection))
{
if (class_exists('JLog'))
{
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database');
}
throw new RuntimeException($this->errorMsg, $this->errorNum);
}
// Take a local copy so that we don't modify the original query and cause issues later
$query = $this->replacePrefix((string) $this->sql);
if (!($this->sql instanceof F0FDatabaseQuery) && ($this->limit > 0 || $this->offset > 0))
{
$query = $this->limit($query, $this->limit, $this->offset);
}
// Increment the query counter.
$this->count++;
// Reset the error values.
$this->errorNum = 0;
$this->errorMsg = '';
// If debugging is enabled then let's log the query.
if ($this->debug)
{
// Add the query to the object queue.
$this->log[] = $query;
if (class_exists('JLog'))
{
JLog::add($query, JLog::DEBUG, 'databasequery');
}
$this->timings[] = microtime(true);
}
// SQLSrv_num_rows requires a static or keyset cursor.
if (strncmp(ltrim(strtoupper($query)), 'SELECT', strlen('SELECT')) == 0)
{
$array = array('Scrollable' => SQLSRV_CURSOR_KEYSET);
}
else
{
$array = array();
}
// Execute the query. Error suppression is used here to prevent warnings/notices that the connection has been lost.
$this->cursor = @sqlsrv_query($this->connection, $query, array(), $array);
if ($this->debug)
{
$this->timings[] = microtime(true);
if (defined('DEBUG_BACKTRACE_IGNORE_ARGS'))
{
$this->callStacks[] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
}
else
{
$this->callStacks[] = debug_backtrace();
}
}
// If an error occurred handle it.
if (!$this->cursor)
{
// Get the error number and message before we execute any more queries.
$errorNum = $this->getErrorNumber();
$errorMsg = $this->getErrorMessage($query);
// Check if the server was disconnected.
if (!$this->connected())
{
try
{
// Attempt to reconnect.
$this->connection = null;
$this->connect();
}
// If connect fails, ignore that exception and throw the normal exception.
catch (RuntimeException $e)
{
// Get the error number and message.
$this->errorNum = $this->getErrorNumber();
$this->errorMsg = $this->getErrorMessage($query);
// Throw the normal query exception.
if (class_exists('JLog'))
{
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
}
throw new RuntimeException($this->errorMsg, $this->errorNum, $e);
}
// Since we were able to reconnect, run the query again.
return $this->execute();
}
// The server was not disconnected.
else
{
// Get the error number and message from before we tried to reconnect.
$this->errorNum = $errorNum;
$this->errorMsg = $errorMsg;
// Throw the normal query exception.
if (class_exists('JLog'))
{
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
}
throw new RuntimeException($this->errorMsg, $this->errorNum);
}
}
return $this->cursor;
}
/**
* This function replaces a string identifier $prefix with the string held is the
* tablePrefix class variable.
*
* @param string $query The SQL statement to prepare.
* @param string $prefix The common table prefix.
*
* @return string The processed SQL statement.
*
* @since 12.1
*/
public function replacePrefix($query, $prefix = '#__')
{
$startPos = 0;
$literal = '';
$query = trim($query);
$n = strlen($query);
while ($startPos < $n)
{
$ip = strpos($query, $prefix, $startPos);
if ($ip === false)
{
break;
}
$j = strpos($query, "N'", $startPos);
$k = strpos($query, '"', $startPos);
if (($k !== false) && (($k < $j) || ($j === false)))
{
$quoteChar = '"';
$j = $k;
}
else
{
$quoteChar = "'";
}
if ($j === false)
{
$j = $n;
}
$literal .= str_replace($prefix, $this->tablePrefix, substr($query, $startPos, $j - $startPos));
$startPos = $j;
$j = $startPos + 1;
if ($j >= $n)
{
break;
}
// Quote comes first, find end of quote
while (true)
{
$k = strpos($query, $quoteChar, $j);
$escaped = false;
if ($k === false)
{
break;
}
$l = $k - 1;
while ($l >= 0 && $query{$l} == '\\')
{
$l--;
$escaped = !$escaped;
}
if ($escaped)
{
$j = $k + 1;
continue;
}
break;
}
if ($k === false)
{
// Error in the query - no end quote; ignore it
break;
}
$literal .= substr($query, $startPos, $k - $startPos + 1);
$startPos = $k + 1;
}
if ($startPos < $n)
{
$literal .= substr($query, $startPos, $n - $startPos);
}
return $literal;
}
/**
* Select a database for use.
*
* @param string $database The name of the database to select for use.
*
* @return boolean True if the database was successfully selected.
*
* @since 12.1
* @throws RuntimeException
*/
public function select($database)
{
$this->connect();
if (!$database)
{
return false;
}
if (!sqlsrv_query($this->connection, 'USE ' . $database, null, array('scrollable' => SQLSRV_CURSOR_STATIC)))
{
throw new RuntimeException('Could not connect to database');
}
return true;
}
/**
* Set the connection to use UTF-8 character encoding.
*
* @return boolean True on success.
*
* @since 12.1
*/
public function setUtf()
{
return false;
}
/**
* Method to commit a transaction.
*
* @param boolean $toSavepoint If true, commit to the last savepoint.
*
* @return void
*
* @since 12.1
* @throws RuntimeException
*/
public function transactionCommit($toSavepoint = false)
{
$this->connect();
if (!$toSavepoint || $this->transactionDepth <= 1)
{
if ($this->setQuery('COMMIT TRANSACTION')->execute())
{
$this->transactionDepth = 0;
}
return;
}
$this->transactionDepth--;
}
/**
* Method to roll back a transaction.
*
* @param boolean $toSavepoint If true, rollback to the last savepoint.
*
* @return void
*
* @since 12.1
* @throws RuntimeException
*/
public function transactionRollback($toSavepoint = false)
{
$this->connect();
if (!$toSavepoint || $this->transactionDepth <= 1)
{
if ($this->setQuery('ROLLBACK TRANSACTION')->execute())
{
$this->transactionDepth = 0;
}
return;
}
$savepoint = 'SP_' . ($this->transactionDepth - 1);
$this->setQuery('ROLLBACK TRANSACTION ' . $this->quoteName($savepoint));
if ($this->execute())
{
$this->transactionDepth--;
}
}
/**
* Method to initialize a transaction.
*
* @param boolean $asSavepoint If true and a transaction is already active, a savepoint will be created.
*
* @return void
*
* @since 12.1
* @throws RuntimeException
*/
public function transactionStart($asSavepoint = false)
{
$this->connect();
if (!$asSavepoint || !$this->transactionDepth)
{
if ($this->setQuery('BEGIN TRANSACTION')->execute())
{
$this->transactionDepth = 1;
}
return;
}
$savepoint = 'SP_' . $this->transactionDepth;
$this->setQuery('BEGIN TRANSACTION ' . $this->quoteName($savepoint));
if ($this->execute())
{
$this->transactionDepth++;
}
}
/**
* Method to fetch a row from the result set cursor as an array.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 12.1
*/
protected function fetchArray($cursor = null)
{
return sqlsrv_fetch_array($cursor ? $cursor : $this->cursor, SQLSRV_FETCH_NUMERIC);
}
/**
* Method to fetch a row from the result set cursor as an associative array.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 12.1
*/
protected function fetchAssoc($cursor = null)
{
return sqlsrv_fetch_array($cursor ? $cursor : $this->cursor, SQLSRV_FETCH_ASSOC);
}
/**
* Method to fetch a row from the result set cursor as an object.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
* @param string $class The class name to use for the returned row object.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 12.1
*/
protected function fetchObject($cursor = null, $class = 'stdClass')
{
return sqlsrv_fetch_object($cursor ? $cursor : $this->cursor, $class);
}
/**
* Method to free up the memory used for the result set.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return void
*
* @since 12.1
*/
protected function freeResult($cursor = null)
{
sqlsrv_free_stmt($cursor ? $cursor : $this->cursor);
}
/**
* Method to check and see if a field exists in a table.
*
* @param string $table The table in which to verify the field.
* @param string $field The field to verify.
*
* @return boolean True if the field exists in the table.
*
* @since 12.1
*/
protected function checkFieldExists($table, $field)
{
$this->connect();
$table = $this->replacePrefix((string) $table);
$query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '$table' AND COLUMN_NAME = '$field'" .
" ORDER BY ORDINAL_POSITION";
$this->setQuery($query);
if ($this->loadResult())
{
return true;
}
else
{
return false;
}
}
/**
* Method to wrap an SQL statement to provide a LIMIT and OFFSET behavior for scrolling through a result set.
*
* @param string $query The SQL statement to process.
* @param integer $limit The maximum affected rows to set.
* @param integer $offset The affected row offset to set.
*
* @return string The processed SQL statement.
*
* @since 12.1
*/
protected function limit($query, $limit, $offset)
{
if ($limit == 0 && $offset == 0)
{
return $query;
}
$start = $offset + 1;
$end = $offset + $limit;
$orderBy = stristr($query, 'ORDER BY');
if (is_null($orderBy) || empty($orderBy))
{
$orderBy = 'ORDER BY (select 0)';
}
$query = str_ireplace($orderBy, '', $query);
$rowNumberText = ', ROW_NUMBER() OVER (' . $orderBy . ') AS RowNumber FROM ';
$query = preg_replace('/\sFROM\s/i', $rowNumberText, $query, 1);
return $query;
}
/**
* Renames a table in the database.
*
* @param string $oldTable The name of the table to be renamed
* @param string $newTable The new name for the table.
* @param string $backup Table prefix
* @param string $prefix For the table - used to rename constraints in non-mysql databases
*
* @return F0FDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 12.1
* @throws RuntimeException
*/
public function renameTable($oldTable, $newTable, $backup = null, $prefix = null)
{
$constraints = array();
if (!is_null($prefix) && !is_null($backup))
{
$constraints = $this->getTableConstraints($oldTable);
}
if (!empty($constraints))
{
$this->renameConstraints($constraints, $prefix, $backup);
}
$this->setQuery("sp_rename '" . $oldTable . "', '" . $newTable . "'");
return $this->execute();
}
/**
* Locks a table in the database.
*
* @param string $tableName The name of the table to lock.
*
* @return F0FDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 12.1
* @throws RuntimeException
*/
public function lockTable($tableName)
{
return $this;
}
/**
* Unlocks tables in the database.
*
* @return F0FDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 12.1
* @throws RuntimeException
*/
public function unlockTables()
{
return $this;
}
/**
* Return the actual SQL Error number
*
* @return integer The SQL Error number
*
* @since 3.4.6
*/
protected function getErrorNumber()
{
$errors = sqlsrv_errors();
return $errors[0]['SQLSTATE'];
}
/**
* Return the actual SQL Error message
*
* @param string $query The SQL Query that fails
*
* @return string The SQL Error message
*
* @since 3.4.6
*/
protected function getErrorMessage($query)
{
$errors = sqlsrv_errors();
$errorMessage = (string) $errors[0]['message'];
// Replace the Databaseprefix with `#__` if we are not in Debug
if (!$this->debug)
{
$errorMessage = str_replace($this->tablePrefix, '#__', $errorMessage);
$query = str_replace($this->tablePrefix, '#__', $query);
}
return $errorMessage . ' SQL=' . $query;
}
}
home/wuectly/www/libraries/joomla/database/query/sqlsrv.php 0000604 00000056760 15245607156 0020252 0 ustar 00
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* Query Building Class.
*
* @since 1.7.0
*/
class JDatabaseQuerySqlsrv extends JDatabaseQuery implements JDatabaseQueryLimitable
{
/**
* The character(s) used to quote SQL statement names such as table names or field names,
* etc. The child classes should define this as necessary. If a single character string the
* same character is used for both sides of the quoted name, else the first character will be
* used for the opening quote and the second for the closing quote.
*
* @var string
* @since 1.7.0
*/
protected $name_quotes = '`';
/**
* The null or zero representation of a timestamp for the database driver. This should be
* defined in child classes to hold the appropriate value for the engine.
*
* @var string
* @since 1.7.0
*/
protected $null_date = '1900-01-01 00:00:00';
/**
* @var integer The affected row limit for the current SQL statement.
* @since 3.2
*/
protected $limit = 0;
/**
* @var integer The affected row offset to apply for the current SQL statement.
* @since 3.2
*/
protected $offset = 0;
/**
* Magic function to convert the query to a string.
*
* @return string The completed query.
*
* @since 1.7.0
*/
public function __toString()
{
$query = '';
switch ($this->type)
{
case 'select':
// Add required aliases for offset or fixGroupColumns method
$columns = $this->fixSelectAliases();
$query = (string) $this->select;
if ($this->group)
{
$this->fixGroupColumns($columns);
}
$query .= (string) $this->from;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->selectRowNumber === null)
{
if ($this->group)
{
$query .= (string) $this->group;
}
if ($this->having)
{
$query .= (string) $this->having;
}
}
if ($this->order)
{
$query .= (string) $this->order;
}
if ($this instanceof JDatabaseQueryLimitable && ($this->limit > 0 || $this->offset > 0))
{
$query = $this->processLimit($query, $this->limit, $this->offset);
}
break;
case 'insert':
$query .= (string) $this->insert;
// Set method
if ($this->set)
{
$query .= (string) $this->set;
}
// Columns-Values method
elseif ($this->values)
{
if ($this->columns)
{
$query .= (string) $this->columns;
}
$elements = $this->insert->getElements();
$tableName = array_shift($elements);
$query .= 'VALUES ';
$query .= (string) $this->values;
if ($this->autoIncrementField)
{
$query = 'SET IDENTITY_INSERT ' . $tableName . ' ON;' . $query . 'SET IDENTITY_INSERT ' . $tableName . ' OFF;';
}
if ($this->where)
{
$query .= (string) $this->where;
}
}
break;
case 'delete':
$query .= (string) $this->delete;
$query .= (string) $this->from;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->order)
{
$query .= (string) $this->order;
}
break;
case 'update':
if ($this->join)
{
$tmpUpdate = $this->update;
$tmpFrom = $this->from;
$this->update = null;
$this->from = null;
$updateElem = $tmpUpdate->getElements();
$updateArray = explode(' ', $updateElem[0]);
// Use table alias if exists
$this->update(end($updateArray));
$this->from($updateElem[0]);
$query .= (string) $this->update;
$query .= (string) $this->set;
$query .= (string) $this->from;
$this->update = $tmpUpdate;
$this->from = $tmpFrom;
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
else
{
$query .= (string) $this->update;
$query .= (string) $this->set;
}
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->order)
{
$query .= (string) $this->order;
}
break;
default:
$query = parent::__toString();
break;
}
return $query;
}
/**
* Casts a value to a char.
*
* Ensure that the value is properly quoted before passing to the method.
*
* @param string $value The value to cast as a char.
*
* @param string $len The length of the char.
*
* @return string Returns the cast value.
*
* @since 1.7.0
*/
public function castAsChar($value, $len = null)
{
if (!$len)
{
return 'CAST(' . $value . ' as NVARCHAR(30))';
}
else
{
return 'CAST(' . $value . ' as NVARCHAR(' . $len . '))';
}
}
/**
* Gets the function to determine the length of a character string.
*
* @param string $field A value.
* @param string $operator Comparison operator between charLength integer value and $condition
* @param string $condition Integer value to compare charLength with.
*
* @return string The required char length call.
*
* @since 1.7.0
*/
public function charLength($field, $operator = null, $condition = null)
{
return 'DATALENGTH(' . $field . ')' . (isset($operator) && isset($condition) ? ' ' . $operator . ' ' . $condition : '');
}
/**
* Concatenates an array of column names or values.
*
* @param array $values An array of values to concatenate.
* @param string $separator As separator to place between each value.
*
* @return string The concatenated values.
*
* @since 1.7.0
*/
public function concatenate($values, $separator = null)
{
if ($separator)
{
return '(' . implode('+' . $this->quote($separator) . '+', $values) . ')';
}
else
{
return '(' . implode('+', $values) . ')';
}
}
/**
* Gets the current date and time.
*
* @return string
*
* @since 1.7.0
*/
public function currentTimestamp()
{
return 'GETDATE()';
}
/**
* Get the length of a string in bytes.
*
* @param string $value The string to measure.
*
* @return integer
*
* @since 1.7.0
*/
public function length($value)
{
return 'LEN(' . $value . ')';
}
/**
* Add to the current date and time.
* Usage:
* $query->select($query->dateAdd());
* Prefixing the interval with a - (negative sign) will cause subtraction to be used.
*
* @param datetime $date The date to add to; type may be time or datetime.
* @param string $interval The string representation of the appropriate number of units
* @param string $datePart The part of the date to perform the addition on
*
* @return string The string with the appropriate sql for addition of dates
*
* @since 3.2.0
* @note Not all drivers support all units.
* @link http://msdn.microsoft.com/en-us/library/ms186819.aspx for more information
*/
public function dateAdd($date, $interval, $datePart)
{
return 'DATEADD(' . $datePart . ', ' . $interval . ', ' . $date . ')';
}
/**
* Method to modify a query already in string format with the needed
* additions to make the query limited to a particular number of
* results, or start at a particular offset.
*
* @param string $query The query in string format
* @param integer $limit The limit for the result set
* @param integer $offset The offset for the result set
*
* @return string
*
* @since 3.0.0
*/
public function processLimit($query, $limit, $offset = 0)
{
if ($limit)
{
$total = $offset + $limit;
$position = stripos($query, 'SELECT');
$distinct = stripos($query, 'SELECT DISTINCT');
if ($position === $distinct)
{
$query = substr_replace($query, 'SELECT DISTINCT TOP ' . (int) $total, $position, 15);
}
else
{
$query = substr_replace($query, 'SELECT TOP ' . (int) $total, $position, 6);
}
}
if (!$offset)
{
return $query;
}
return PHP_EOL
. 'SELECT * FROM (SELECT *, ROW_NUMBER() OVER (ORDER BY (SELECT 0)) AS RowNumber FROM ('
. $query
. PHP_EOL . ') AS A) AS A WHERE RowNumber > ' . (int) $offset;
}
/**
* Sets the offset and limit for the result set, if the database driver supports it.
*
* Usage:
* $query->setLimit(100, 0); (retrieve 100 rows, starting at first record)
* $query->setLimit(50, 50); (retrieve 50 rows, starting at 50th record)
*
* @param integer $limit The limit for the result set
* @param integer $offset The offset for the result set
*
* @return JDatabaseQuery Returns this object to allow chaining.
*
* @since 3.0.0
*/
public function setLimit($limit = 0, $offset = 0)
{
$this->limit = (int) $limit;
$this->offset = (int) $offset;
return $this;
}
/**
* Split a string of sql expression into an array of individual columns.
* Single line or line end comments and multi line comments are stripped off.
* Always return at least one column.
*
* @param string $string Input string of sql expression like select expression.
*
* @return array[] The columns from the input string separated into an array.
*
* @since 3.7.0
*/
protected function splitSqlExpression($string)
{
// Append whitespace as equivalent to the last comma
$string .= ' ';
$colIdx = 0;
$start = 0;
$open = false;
$openC = 0;
$comment = false;
$endString = '';
$length = strlen($string);
$columns = array();
$column = array();
$current = '';
$previous = null;
$operators = array(
'+' => '',
'-' => '',
'*' => '',
'/' => '',
'%' => '',
'&' => '',
'|' => '',
'~' => '',
'^' => '',
);
$addBlock = function ($block) use (&$column, &$colIdx)
{
if (isset($column[$colIdx]))
{
$column[$colIdx] .= $block;
}
else
{
$column[$colIdx] = $block;
}
};
for ($i = 0; $i < $length; $i++)
{
$current = substr($string, $i, 1);
$current2 = substr($string, $i, 2);
$current3 = substr($string, $i, 3);
$lenEndString = strlen($endString);
$testEnd = substr($string, $i, $lenEndString);
if ($current == '[' || $current == '"' || $current == "'" || $current2 == '--'
|| ($current2 == '/*') || ($current == '#' && $current3 != '#__')
|| ($lenEndString && $testEnd == $endString))
{
if ($open)
{
if ($testEnd === $endString)
{
if ($comment)
{
if ($lenEndString > 1)
{
$i += ($lenEndString - 1);
}
// Move cursor after close tag of comment
$start = $i + 1;
$comment = false;
}
elseif ($current == "'" || $current == ']' || $current == '"')
{
// Check for escaped quote like '', ]] or ""
$n = 1;
while ($i + $n < $length && $string[$i + $n] == $current)
{
$n++;
}
// Jump to the last quote
$i += $n - 1;
if ($n % 2 === 0)
{
// There is only escaped quote
continue;
}
elseif ($n > 2)
{
// The last right close quote is not escaped
$current = $string[$i];
}
}
$open = false;
$endString = '';
}
}
else
{
$open = true;
if ($current == '#' || $current2 == '--')
{
$endString = "\n";
$comment = true;
}
elseif ($current2 == '/*')
{
$endString = '*/';
$comment = true;
}
elseif ($current == '[')
{
$endString = ']';
}
else
{
$endString = $current;
}
if ($comment && $start < $i)
{
// Add string exists before comment
$addBlock(substr($string, $start, $i - $start));
$previous = $string[$i - 1];
$start = $i;
}
}
}
elseif (!$open)
{
if ($current == '(')
{
$openC++;
$previous = $current;
}
elseif ($current == ')')
{
$openC--;
$previous = $current;
}
elseif ($current == '.')
{
if ($i === $start && $colIdx > 0 && !isset($column[$colIdx]))
{
// Remove whitepace placed before dot
$colIdx--;
}
$previous = $current;
}
elseif ($openC === 0)
{
if (ctype_space($current))
{
// Normalize whitepace
$string[$i] = ' ';
if ($start < $i)
{
// Add text placed before whitespace
$addBlock(substr($string, $start, $i - $start));
$colIdx++;
$previous = $string[$i - 1];
}
elseif (isset($column[$colIdx]))
{
if ($colIdx > 1 || !isset($operators[$previous]))
{
// There was whitespace after comment
$colIdx++;
}
}
// Move cursor forward
$start = $i + 1;
}
elseif (isset($operators[$current]) && ($current !== '*' || $previous !== '.'))
{
if ($start < $i)
{
// Add text before operator
$addBlock(substr($string, $start, $i - $start));
$colIdx++;
}
elseif (!isset($column[$colIdx]) && isset($operators[$previous]))
{
// Do not create whitespace between operators
$colIdx--;
}
// Add operator
$addBlock($current);
$previous = $current;
$colIdx++;
// Move cursor forward
$start = $i + 1;
}
else
{
$previous = $current;
}
}
}
if (($current == ',' && !$open && $openC == 0) || $i == $length - 1)
{
if ($start < $i && !$comment)
{
// Save remaining text
$addBlock(substr($string, $start, $i - $start));
}
$columns[] = $column;
// Reset values
$column = array();
$colIdx = 0;
$previous = null;
// Column saved, move cursor forward after comma
$start = $i + 1;
}
}
return $columns;
}
/**
* Add required aliases to columns for select statement in subquery.
*
* @return array[] Array of columns with added missing aliases.
*
* @since 3.7.0
*/
protected function fixSelectAliases()
{
$operators = array(
'+' => '',
'-' => '',
'*' => '',
'/' => '',
'%' => '',
'&' => '',
'|' => '',
'~' => '',
'^' => '',
);
// Split into array and remove comments
$columns = $this->splitSqlExpression(implode(',', $this->select->getElements()));
foreach ($columns as $i => $column)
{
$size = count($column);
if ($size == 0)
{
continue;
}
if ($size > 2 && strcasecmp($column[$size - 2], 'AS') === 0)
{
// Alias exists, replace it to uppercase
$columns[$i][$size - 2] = 'AS';
continue;
}
if ($i == 0 && stripos(' DISTINCT ALL ', " $column[0] ") !== false)
{
// This words are reserved, they are not column names
array_shift($column);
$size--;
}
$lastWord = strtoupper($column[$size - 1]);
$length = strlen($lastWord);
$lastChar = $lastWord[$length - 1];
if ($lastChar == '*')
{
// Skip on wildcard
continue;
}
if ($lastChar == ')'
|| ($size == 1 && $lastChar == "'")
|| $lastWord[0] == '@'
|| $lastWord == 'NULL'
|| $lastWord == 'END'
|| is_numeric($lastWord))
{
/* Ends with:
* - SQL function
* - single static value like 'only '+'string'
* - @@var
* - NULL
* - CASE ... END
* - Numeric
*/
$columns[$i][] = 'AS';
$columns[$i][] = $this->quoteName('columnAlias' . $i);
continue;
}
if ($size == 1)
{
continue;
}
$lastChar2 = substr($column[$size - 2], -1);
// Check if column ends with '- a.x' or '- a. x'
if (isset($operators[$lastChar2])
|| ($size > 2 && $lastChar2 === '.' && isset($operators[substr($column[$size - 3], -1)])))
{
// Ignore plus signs if column start with them
if ($size != 2 || ltrim($column[0], '+') !== '' || $column[1][0] === "'")
{
// If operator exists before last word then alias is required for subquery
$columns[$i][] = 'AS';
$columns[$i][] = $this->quoteName('columnAlias' . $i);
continue;
}
}
elseif ($column[$size - 1][0] !== '.' && $lastChar2 !== '.')
{
// If columns is like name name2 then second word is alias.
// Add missing AS before the alias, exception for 'a. x' and 'a .x'
array_splice($columns[$i], -1, 0, 'AS');
}
}
$selectColumns = array();
foreach ($columns as $i => $column)
{
$selectColumns[$i] = implode(' ', $column);
}
$this->select = new JDatabaseQueryElement('SELECT', $selectColumns);
return $columns;
}
/**
* Add missing columns names to GROUP BY clause.
*
* @param array[] $selectColumns Array of columns from splitSqlExpression method.
*
* @return JDatabaseQuery Returns this object to allow chaining.
*
* @since 3.7.0
*/
protected function fixGroupColumns($selectColumns)
{
// Cache tables columns
static $cacheCols = array();
// Known columns of all included tables
$knownColumnsByAlias = array();
$iquotes = array('"' => '', '[' => '', "'" => '');
$nquotes = array('"', '[', ']');
// Aggregate functions
$aFuncs = array(
'AVG(',
'CHECKSUM_AGG(',
'COUNT(',
'COUNT_BIG(',
'GROUPING(',
'GROUPING_ID(',
'MIN(',
'MAX(',
'SUM(',
'STDEV(',
'STDEVP(',
'VAR(',
'VARP(',
);
// Aggregated columns
$filteredColumns = array();
// Aliases found in SELECT statement
$knownAliases = array();
$wildcardTables = array();
foreach ($selectColumns as $i => $column)
{
$size = count($column);
if ($size === 0)
{
continue;
}
if ($i == 0 && stripos(' DISTINCT ALL ', " $column[0] ") !== false)
{
// These words are reserved, they are not column names
array_shift($selectColumns[0]);
array_shift($column);
$size--;
}
if ($size > 2 && $column[$size - 2] === 'AS')
{
// Save and remove AS alias
$alias = $column[$size - 1];
if (isset($iquotes[$alias[0]]))
{
$alias = substr($alias, 1, -1);
}
// Remove alias
$selectColumns[$i] = $column = array_slice($column, 0, -2);
if ($size === 3 || ($size === 4 && strpos('+-*/%&|~^', $column[0][0]) !== false))
{
$lastWord = $column[$size - 3];
if ($lastWord[0] === "'" || $lastWord === 'NULL' || is_numeric($lastWord))
{
unset($selectColumns[$i]);
continue;
}
}
// Remember pair alias => column expression
$knownAliases[$alias] = implode(' ', $column);
}
$aggregated = false;
foreach ($column as $j => $block)
{
if (substr($block, -2) === '.*')
{
// Found column ends with .*
if (isset($iquotes[$block[0]]))
{
// Quoted table
$wildcardTables[] = substr($block, 1, -3);
}
else
{
$wildcardTables[] = substr($block, 0, -2);
}
}
elseif (str_ireplace($aFuncs, '', $block) != $block)
{
$aggregated = true;
}
if ($block[0] === "'")
{
// Shrink static strings which could contain column name
$column[$j] = "''";
}
}
if (!$aggregated)
{
// Without aggregated columns and aliases
$filteredColumns[] = implode(' ', $selectColumns[$i]);
}
// Without aliases and static strings
$selectColumns[$i] = implode(' ', $column);
}
// If select statement use table.* expression
if ($wildcardTables)
{
// Split FROM statement into list of tables
$tables = $this->splitSqlExpression(implode(',', $this->from->getElements()));
foreach ($tables as $i => $table)
{
$table = implode(' ', $table);
// Exclude subquery from the FROM clause
if (strpos($table, '(') === false)
{
// Unquote
$table = str_replace($nquotes, '', $table);
$table = str_replace('#__', $this->db->getPrefix(), $table);
$table = explode(' ', $table);
$alias = end($table);
$table = $table[0];
// Chek if exists a wildcard with current alias table?
if (in_array($alias, $wildcardTables, true))
{
if (!isset($cacheCols[$table]))
{
$cacheCols[$table] = $this->db->getTableColumns($table);
}
if ($this->join || $table != $alias)
{
foreach ($cacheCols[$table] as $name => $type)
{
$knownColumnsByAlias[$alias][] = $alias . '.' . $name;
}
}
else
{
foreach ($cacheCols[$table] as $name => $type)
{
$knownColumnsByAlias[$alias][] = $name;
}
}
}
}
}
// Now we need to get all tables from any joins
// Go through all joins and add them to the tables array
if ($this->join)
{
foreach ($this->join as $join)
{
// Unquote and replace prefix
$joinTbl = str_replace($nquotes, '', (string) $join);
$joinTbl = str_replace("#__", $this->db->getPrefix(), $joinTbl);
// Exclude subquery
if (preg_match('/JOIN\s+(\w+)(?:\s+AS)?(?:\s+(\w+))?/i', $joinTbl, $matches))
{
$table = $matches[1];
$alias = isset($matches[2]) ? $matches[2] : $table;
// Chek if exists a wildcard with current alias table?
if (in_array($alias, $wildcardTables, true))
{
if (!isset($cacheCols[$table]))
{
$cacheCols[$table] = $this->db->getTableColumns($table);
}
foreach ($cacheCols[$table] as $name => $type)
{
$knownColumnsByAlias[$alias][] = $alias . '.' . $name;
}
}
}
}
}
}
$selectExpression = implode(',', $selectColumns);
// Split into the right columns
$groupColumns = $this->splitSqlExpression(implode(',', $this->group->getElements()));
// Remove column aliases from GROUP statement - SQLSRV does not support it
foreach ($groupColumns as $i => $column)
{
$groupColumns[$i] = implode(' ', $column);
$column = str_replace($nquotes, '', $groupColumns[$i]);
if (isset($knownAliases[$column]))
{
// Be sure that this is not a valid column name
if (!preg_match('/\b' . preg_quote($column, '/') . '\b/', $selectExpression))
{
// Replace column alias by column expression
$groupColumns[$i] = $knownAliases[$column];
}
}
}
// Find all alias.* and fill with proper table column names
foreach ($filteredColumns as $i => $column)
{
if (substr($column, -2) === '.*')
{
unset($filteredColumns[$i]);
// Extract alias.* columns into GROUP BY statement
$groupColumns = array_merge($groupColumns, $knownColumnsByAlias[substr($column, 0, -2)]);
}
}
$groupColumns = array_merge($groupColumns, $filteredColumns);
if ($this->order)
{
// Remove direction suffixes
$dir = array(" DESC\v", " ASC\v");
$orderColumns = $this->splitSqlExpression(implode(',', $this->order->getElements()));
foreach ($orderColumns as $i => $column)
{
$column = implode(' ', $column);
$orderColumns[$i] = $column = trim(str_ireplace($dir, '', "$column\v"), "\v");
if (isset($knownAliases[str_replace($nquotes, '', $column)]))
{
unset($orderColumns[$i]);
}
if (str_ireplace($aFuncs, '', $column) != $column)
{
// Do not add aggregate expression
unset($orderColumns[$i]);
}
}
$groupColumns = array_merge($groupColumns, $orderColumns);
}
// Get a unique string of all column names that need to be included in the group statement
$this->group = new JDatabaseQueryElement('GROUP BY', array_unique($groupColumns));
return $this;
}
/**
* Return correct rand() function for MSSQL.
*
* Ensure that the rand() function is MSSQL compatible.
*
* Usage:
* $query->Rand();
*
* @return string The correct rand function.
*
* @since 3.5
*/
public function Rand()
{
return ' NEWID() ';
}
}
home/wuectly/www/libraries/fof/database/driver/sqlsrv.php 0000604 00000065001 15245613277 0017656 0 ustar 00 disconnect();
}
/**
* Connects to the database if needed.
*
* @return void Returns void if the database connected successfully.
*
* @since 12.1
* @throws RuntimeException
*/
public function connect()
{
if ($this->connection)
{
return;
}
// Build the connection configuration array.
$config = array(
'Database' => $this->options['database'],
'uid' => $this->options['user'],
'pwd' => $this->options['password'],
'CharacterSet' => 'UTF-8',
'ReturnDatesAsStrings' => true);
// Make sure the SQLSRV extension for PHP is installed and enabled.
if (!function_exists('sqlsrv_connect'))
{
throw new RuntimeException('PHP extension sqlsrv_connect is not available.');
}
// Attempt to connect to the server.
if (!($this->connection = @ sqlsrv_connect($this->options['host'], $config)))
{
throw new RuntimeException('Database sqlsrv_connect failed');
}
// Make sure that DB warnings are not returned as errors.
sqlsrv_configure('WarningsReturnAsErrors', 0);
// If auto-select is enabled select the given database.
if ($this->options['select'] && !empty($this->options['database']))
{
$this->select($this->options['database']);
}
// Set charactersets.
$this->utf = $this->setUtf();
}
/**
* Disconnects the database.
*
* @return void
*
* @since 12.1
*/
public function disconnect()
{
// Close the connection.
if (is_resource($this->connection))
{
foreach ($this->disconnectHandlers as $h)
{
call_user_func_array($h, array( &$this));
}
sqlsrv_close($this->connection);
}
$this->connection = null;
}
/**
* Get table constraints
*
* @param string $tableName The name of the database table.
*
* @return array Any constraints available for the table.
*
* @since 12.1
*/
protected function getTableConstraints($tableName)
{
$this->connect();
$query = $this->getQuery(true);
$this->setQuery(
'SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_NAME = ' . $query->quote($tableName)
);
return $this->loadColumn();
}
/**
* Rename constraints.
*
* @param array $constraints Array(strings) of table constraints
* @param string $prefix A string
* @param string $backup A string
*
* @return void
*
* @since 12.1
*/
protected function renameConstraints($constraints = array(), $prefix = null, $backup = null)
{
$this->connect();
foreach ($constraints as $constraint)
{
$this->setQuery('sp_rename ' . $constraint . ',' . str_replace($prefix, $backup, $constraint));
$this->execute();
}
}
/**
* Method to escape a string for usage in an SQL statement.
*
* The escaping for MSSQL isn't handled in the driver though that would be nice. Because of this we need
* to handle the escaping ourselves.
*
* @param string $text The string to be escaped.
* @param boolean $extra Optional parameter to provide extra escaping.
*
* @return string The escaped string.
*
* @since 12.1
*/
public function escape($text, $extra = false)
{
$result = addslashes($text);
$result = str_replace("\'", "''", $result);
$result = str_replace('\"', '"', $result);
$result = str_replace('\/', '/', $result);
if ($extra)
{
// We need the below str_replace since the search in sql server doesn't recognize _ character.
$result = str_replace('_', '[_]', $result);
}
return $result;
}
/**
* Determines if the connection to the server is active.
*
* @return boolean True if connected to the database engine.
*
* @since 12.1
*/
public function connected()
{
// TODO: Run a blank query here
return true;
}
/**
* Drops a table from the database.
*
* @param string $tableName The name of the database table to drop.
* @param boolean $ifExists Optionally specify that the table must exist before it is dropped.
*
* @return FOFDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 12.1
*/
public function dropTable($tableName, $ifExists = true)
{
$this->connect();
$query = $this->getQuery(true);
if ($ifExists)
{
$this->setQuery(
'IF EXISTS(SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = ' . $query->quote($tableName) . ') DROP TABLE ' . $tableName
);
}
else
{
$this->setQuery('DROP TABLE ' . $tableName);
}
$this->execute();
return $this;
}
/**
* Get the number of affected rows for the previous executed SQL statement.
*
* @return integer The number of affected rows.
*
* @since 12.1
*/
public function getAffectedRows()
{
$this->connect();
return sqlsrv_rows_affected($this->cursor);
}
/**
* Method to get the database collation in use by sampling a text field of a table in the database.
*
* @return mixed The collation in use by the database or boolean false if not supported.
*
* @since 12.1
*/
public function getCollation()
{
// TODO: Not fake this
return 'MSSQL UTF-8 (UCS2)';
}
/**
* Method to get the database connection collation, as reported by the driver. If the connector doesn't support
* reporting this value please return an empty string.
*
* @return string
*/
public function getConnectionCollation()
{
// TODO: Not fake this
return 'MSSQL UTF-8 (UCS2)';
}
/**
* Get the number of returned rows for the previous executed SQL statement.
*
* @param resource $cursor An optional database cursor resource to extract the row count from.
*
* @return integer The number of returned rows.
*
* @since 12.1
*/
public function getNumRows($cursor = null)
{
$this->connect();
return sqlsrv_num_rows($cursor ? $cursor : $this->cursor);
}
/**
* Retrieves field information about the given tables.
*
* @param mixed $table A table name
* @param boolean $typeOnly True to only return field types.
*
* @return array An array of fields.
*
* @since 12.1
* @throws RuntimeException
*/
public function getTableColumns($table, $typeOnly = true)
{
$result = array();
$table_temp = $this->replacePrefix((string) $table);
// Set the query to get the table fields statement.
$this->setQuery(
'SELECT column_name as Field, data_type as Type, is_nullable as \'Null\', column_default as \'Default\'' .
' FROM information_schema.columns WHERE table_name = ' . $this->quote($table_temp)
);
$fields = $this->loadObjectList();
// If we only want the type as the value add just that to the list.
if ($typeOnly)
{
foreach ($fields as $field)
{
$result[$field->Field] = preg_replace("/[(0-9)]/", '', $field->Type);
}
}
// If we want the whole field data object add that to the list.
else
{
foreach ($fields as $field)
{
if (stristr(strtolower($field->Type), "nvarchar"))
{
$field->Default = "";
}
$result[$field->Field] = $field;
}
}
return $result;
}
/**
* Shows the table CREATE statement that creates the given tables.
*
* This is unsupported by MSSQL.
*
* @param mixed $tables A table name or a list of table names.
*
* @return array A list of the create SQL for the tables.
*
* @since 12.1
* @throws RuntimeException
*/
public function getTableCreate($tables)
{
$this->connect();
return '';
}
/**
* Get the details list of keys for a table.
*
* @param string $table The name of the table.
*
* @return array An array of the column specification for the table.
*
* @since 12.1
* @throws RuntimeException
*/
public function getTableKeys($table)
{
$this->connect();
// TODO To implement.
return array();
}
/**
* Method to get an array of all tables in the database.
*
* @return array An array of all the tables in the database.
*
* @since 12.1
* @throws RuntimeException
*/
public function getTableList()
{
$this->connect();
// Set the query to get the tables statement.
$this->setQuery('SELECT name FROM ' . $this->getDatabase() . '.sys.Tables WHERE type = \'U\';');
$tables = $this->loadColumn();
return $tables;
}
/**
* Get the version of the database connector.
*
* @return string The database connector version.
*
* @since 12.1
*/
public function getVersion()
{
$this->connect();
$version = sqlsrv_server_info($this->connection);
return $version['SQLServerVersion'];
}
/**
* Inserts a row into a table based on an object's properties.
*
* @param string $table The name of the database table to insert into.
* @param object &$object A reference to an object whose public properties match the table fields.
* @param string $key The name of the primary key. If provided the object property is updated.
*
* @return boolean True on success.
*
* @since 12.1
* @throws RuntimeException
*/
public function insertObject($table, &$object, $key = null)
{
$fields = array();
$values = array();
$statement = 'INSERT INTO ' . $this->quoteName($table) . ' (%s) VALUES (%s)';
foreach (get_object_vars($object) as $k => $v)
{
// Only process non-null scalars.
if (is_array($v) or is_object($v) or $v === null)
{
continue;
}
if (!$this->checkFieldExists($table, $k))
{
continue;
}
if ($k[0] == '_')
{
// Internal field
continue;
}
if ($k == $key && $key == 0)
{
continue;
}
$fields[] = $this->quoteName($k);
$values[] = $this->Quote($v);
}
// Set the query and execute the insert.
$this->setQuery(sprintf($statement, implode(',', $fields), implode(',', $values)));
if (!$this->execute())
{
return false;
}
$id = $this->insertid();
if ($key && $id)
{
$object->$key = $id;
}
return true;
}
/**
* Method to get the auto-incremented value from the last INSERT statement.
*
* @return integer The value of the auto-increment field from the last inserted row.
*
* @since 12.1
*/
public function insertid()
{
$this->connect();
// TODO: SELECT IDENTITY
$this->setQuery('SELECT @@IDENTITY');
return (int) $this->loadResult();
}
/**
* Method to get the first field of the first row of the result set from the database query.
*
* @return mixed The return value or null if the query failed.
*
* @since 12.1
* @throws RuntimeException
*/
public function loadResult()
{
$ret = null;
// Execute the query and get the result set cursor.
if (!($cursor = $this->execute()))
{
return null;
}
// Get the first row from the result set as an array.
if ($row = sqlsrv_fetch_array($cursor, SQLSRV_FETCH_NUMERIC))
{
$ret = $row[0];
}
// Free up system resources and return.
$this->freeResult($cursor);
// For SQLServer - we need to strip slashes
$ret = stripslashes($ret);
return $ret;
}
/**
* Execute the SQL statement.
*
* @return mixed A database cursor resource on success, boolean false on failure.
*
* @since 12.1
* @throws RuntimeException
* @throws Exception
*/
public function execute()
{
$this->connect();
if (!is_resource($this->connection))
{
if (class_exists('JLog'))
{
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database');
}
throw new RuntimeException($this->errorMsg, $this->errorNum);
}
// Take a local copy so that we don't modify the original query and cause issues later
$query = $this->replacePrefix((string) $this->sql);
if (!($this->sql instanceof FOFDatabaseQuery) && ($this->limit > 0 || $this->offset > 0))
{
$query = $this->limit($query, $this->limit, $this->offset);
}
// Increment the query counter.
$this->count++;
// Reset the error values.
$this->errorNum = 0;
$this->errorMsg = '';
// If debugging is enabled then let's log the query.
if ($this->debug)
{
// Add the query to the object queue.
$this->log[] = $query;
if (class_exists('JLog'))
{
JLog::add($query, JLog::DEBUG, 'databasequery');
}
$this->timings[] = microtime(true);
}
// SQLSrv_num_rows requires a static or keyset cursor.
if (strncmp(ltrim(strtoupper($query)), 'SELECT', strlen('SELECT')) == 0)
{
$array = array('Scrollable' => SQLSRV_CURSOR_KEYSET);
}
else
{
$array = array();
}
// Execute the query. Error suppression is used here to prevent warnings/notices that the connection has been lost.
$this->cursor = @sqlsrv_query($this->connection, $query, array(), $array);
if ($this->debug)
{
$this->timings[] = microtime(true);
if (defined('DEBUG_BACKTRACE_IGNORE_ARGS'))
{
$this->callStacks[] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
}
else
{
$this->callStacks[] = debug_backtrace();
}
}
// If an error occurred handle it.
if (!$this->cursor)
{
// Get the error number and message before we execute any more queries.
$errorNum = $this->getErrorNumber();
$errorMsg = $this->getErrorMessage($query);
// Check if the server was disconnected.
if (!$this->connected())
{
try
{
// Attempt to reconnect.
$this->connection = null;
$this->connect();
}
// If connect fails, ignore that exception and throw the normal exception.
catch (RuntimeException $e)
{
// Get the error number and message.
$this->errorNum = $this->getErrorNumber();
$this->errorMsg = $this->getErrorMessage($query);
// Throw the normal query exception.
if (class_exists('JLog'))
{
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
}
throw new RuntimeException($this->errorMsg, $this->errorNum, $e);
}
// Since we were able to reconnect, run the query again.
return $this->execute();
}
// The server was not disconnected.
else
{
// Get the error number and message from before we tried to reconnect.
$this->errorNum = $errorNum;
$this->errorMsg = $errorMsg;
// Throw the normal query exception.
if (class_exists('JLog'))
{
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
}
throw new RuntimeException($this->errorMsg, $this->errorNum);
}
}
return $this->cursor;
}
/**
* This function replaces a string identifier $prefix with the string held is the
* tablePrefix class variable.
*
* @param string $query The SQL statement to prepare.
* @param string $prefix The common table prefix.
*
* @return string The processed SQL statement.
*
* @since 12.1
*/
public function replacePrefix($query, $prefix = '#__')
{
$startPos = 0;
$literal = '';
$query = trim($query);
$n = strlen($query);
while ($startPos < $n)
{
$ip = strpos($query, $prefix, $startPos);
if ($ip === false)
{
break;
}
$j = strpos($query, "N'", $startPos);
$k = strpos($query, '"', $startPos);
if (($k !== false) && (($k < $j) || ($j === false)))
{
$quoteChar = '"';
$j = $k;
}
else
{
$quoteChar = "'";
}
if ($j === false)
{
$j = $n;
}
$literal .= str_replace($prefix, $this->tablePrefix, substr($query, $startPos, $j - $startPos));
$startPos = $j;
$j = $startPos + 1;
if ($j >= $n)
{
break;
}
// Quote comes first, find end of quote
while (true)
{
$k = strpos($query, $quoteChar, $j);
$escaped = false;
if ($k === false)
{
break;
}
$l = $k - 1;
while ($l >= 0 && $query[$l] == '\\')
{
$l--;
$escaped = !$escaped;
}
if ($escaped)
{
$j = $k + 1;
continue;
}
break;
}
if ($k === false)
{
// Error in the query - no end quote; ignore it
break;
}
$literal .= substr($query, $startPos, $k - $startPos + 1);
$startPos = $k + 1;
}
if ($startPos < $n)
{
$literal .= substr($query, $startPos, $n - $startPos);
}
return $literal;
}
/**
* Select a database for use.
*
* @param string $database The name of the database to select for use.
*
* @return boolean True if the database was successfully selected.
*
* @since 12.1
* @throws RuntimeException
*/
public function select($database)
{
$this->connect();
if (!$database)
{
return false;
}
if (!sqlsrv_query($this->connection, 'USE ' . $database, null, array('scrollable' => SQLSRV_CURSOR_STATIC)))
{
throw new RuntimeException('Could not connect to database');
}
return true;
}
/**
* Set the connection to use UTF-8 character encoding.
*
* @return boolean True on success.
*
* @since 12.1
*/
public function setUtf()
{
return false;
}
/**
* Method to commit a transaction.
*
* @param boolean $toSavepoint If true, commit to the last savepoint.
*
* @return void
*
* @since 12.1
* @throws RuntimeException
*/
public function transactionCommit($toSavepoint = false)
{
$this->connect();
if (!$toSavepoint || $this->transactionDepth <= 1)
{
if ($this->setQuery('COMMIT TRANSACTION')->execute())
{
$this->transactionDepth = 0;
}
return;
}
$this->transactionDepth--;
}
/**
* Method to roll back a transaction.
*
* @param boolean $toSavepoint If true, rollback to the last savepoint.
*
* @return void
*
* @since 12.1
* @throws RuntimeException
*/
public function transactionRollback($toSavepoint = false)
{
$this->connect();
if (!$toSavepoint || $this->transactionDepth <= 1)
{
if ($this->setQuery('ROLLBACK TRANSACTION')->execute())
{
$this->transactionDepth = 0;
}
return;
}
$savepoint = 'SP_' . ($this->transactionDepth - 1);
$this->setQuery('ROLLBACK TRANSACTION ' . $this->quoteName($savepoint));
if ($this->execute())
{
$this->transactionDepth--;
}
}
/**
* Method to initialize a transaction.
*
* @param boolean $asSavepoint If true and a transaction is already active, a savepoint will be created.
*
* @return void
*
* @since 12.1
* @throws RuntimeException
*/
public function transactionStart($asSavepoint = false)
{
$this->connect();
if (!$asSavepoint || !$this->transactionDepth)
{
if ($this->setQuery('BEGIN TRANSACTION')->execute())
{
$this->transactionDepth = 1;
}
return;
}
$savepoint = 'SP_' . $this->transactionDepth;
$this->setQuery('BEGIN TRANSACTION ' . $this->quoteName($savepoint));
if ($this->execute())
{
$this->transactionDepth++;
}
}
/**
* Method to fetch a row from the result set cursor as an array.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 12.1
*/
protected function fetchArray($cursor = null)
{
return sqlsrv_fetch_array($cursor ? $cursor : $this->cursor, SQLSRV_FETCH_NUMERIC);
}
/**
* Method to fetch a row from the result set cursor as an associative array.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 12.1
*/
protected function fetchAssoc($cursor = null)
{
return sqlsrv_fetch_array($cursor ? $cursor : $this->cursor, SQLSRV_FETCH_ASSOC);
}
/**
* Method to fetch a row from the result set cursor as an object.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
* @param string $class The class name to use for the returned row object.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 12.1
*/
protected function fetchObject($cursor = null, $class = 'stdClass')
{
return sqlsrv_fetch_object($cursor ? $cursor : $this->cursor, $class);
}
/**
* Method to free up the memory used for the result set.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return void
*
* @since 12.1
*/
protected function freeResult($cursor = null)
{
sqlsrv_free_stmt($cursor ? $cursor : $this->cursor);
}
/**
* Method to check and see if a field exists in a table.
*
* @param string $table The table in which to verify the field.
* @param string $field The field to verify.
*
* @return boolean True if the field exists in the table.
*
* @since 12.1
*/
protected function checkFieldExists($table, $field)
{
$this->connect();
$table = $this->replacePrefix((string) $table);
$query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '$table' AND COLUMN_NAME = '$field'" .
" ORDER BY ORDINAL_POSITION";
$this->setQuery($query);
if ($this->loadResult())
{
return true;
}
else
{
return false;
}
}
/**
* Method to wrap an SQL statement to provide a LIMIT and OFFSET behavior for scrolling through a result set.
*
* @param string $query The SQL statement to process.
* @param integer $limit The maximum affected rows to set.
* @param integer $offset The affected row offset to set.
*
* @return string The processed SQL statement.
*
* @since 12.1
*/
protected function limit($query, $limit, $offset)
{
if ($limit == 0 && $offset == 0)
{
return $query;
}
$start = $offset + 1;
$end = $offset + $limit;
$orderBy = stristr($query, 'ORDER BY');
if (is_null($orderBy) || empty($orderBy))
{
$orderBy = 'ORDER BY (select 0)';
}
$query = str_ireplace($orderBy, '', $query);
$rowNumberText = ', ROW_NUMBER() OVER (' . $orderBy . ') AS RowNumber FROM ';
$query = preg_replace('/\sFROM\s/i', $rowNumberText, $query, 1);
return $query;
}
/**
* Renames a table in the database.
*
* @param string $oldTable The name of the table to be renamed
* @param string $newTable The new name for the table.
* @param string $backup Table prefix
* @param string $prefix For the table - used to rename constraints in non-mysql databases
*
* @return FOFDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 12.1
* @throws RuntimeException
*/
public function renameTable($oldTable, $newTable, $backup = null, $prefix = null)
{
$constraints = array();
if (!is_null($prefix) && !is_null($backup))
{
$constraints = $this->getTableConstraints($oldTable);
}
if (!empty($constraints))
{
$this->renameConstraints($constraints, $prefix, $backup);
}
$this->setQuery("sp_rename '" . $oldTable . "', '" . $newTable . "'");
return $this->execute();
}
/**
* Locks a table in the database.
*
* @param string $tableName The name of the table to lock.
*
* @return FOFDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 12.1
* @throws RuntimeException
*/
public function lockTable($tableName)
{
return $this;
}
/**
* Unlocks tables in the database.
*
* @return FOFDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 12.1
* @throws RuntimeException
*/
public function unlockTables()
{
return $this;
}
/**
* Return the actual SQL Error number
*
* @return integer The SQL Error number
*
* @since 3.4.6
*/
protected function getErrorNumber()
{
$errors = sqlsrv_errors();
return $errors[0]['SQLSTATE'];
}
/**
* Return the actual SQL Error message
*
* @param string $query The SQL Query that fails
*
* @return string The SQL Error message
*
* @since 3.4.6
*/
protected function getErrorMessage($query)
{
$errors = sqlsrv_errors();
$errorMessage = (string) $errors[0]['message'];
// Replace the Databaseprefix with `#__` if we are not in Debug
if (!$this->debug)
{
$errorMessage = str_replace($this->tablePrefix, '#__', $errorMessage);
$query = str_replace($this->tablePrefix, '#__', $query);
}
return $errorMessage . ' SQL=' . $query;
}
}
home/wuectly/www/libraries/f0f/database/query/sqlsrv.php 0000604 00000021007 15245617241 0017422 0 ustar 00 type)
{
case 'select':
$query .= (string) $this->select;
$query .= (string) $this->from;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->group)
{
$query .= (string) $this->group;
}
if ($this->order)
{
$query .= (string) $this->order;
}
if ($this->having)
{
$query .= (string) $this->having;
}
if ($this instanceof F0FDatabaseQueryLimitable && ($this->limit > 0 || $this->offset > 0))
{
$query = $this->processLimit($query, $this->limit, $this->offset);
}
break;
case 'insert':
$query .= (string) $this->insert;
// Set method
if ($this->set)
{
$query .= (string) $this->set;
}
// Columns-Values method
elseif ($this->values)
{
if ($this->columns)
{
$query .= (string) $this->columns;
}
$elements = $this->insert->getElements();
$tableName = array_shift($elements);
$query .= 'VALUES ';
$query .= (string) $this->values;
if ($this->autoIncrementField)
{
$query = 'SET IDENTITY_INSERT ' . $tableName . ' ON;' . $query . 'SET IDENTITY_INSERT ' . $tableName . ' OFF;';
}
if ($this->where)
{
$query .= (string) $this->where;
}
}
break;
case 'delete':
$query .= (string) $this->delete;
$query .= (string) $this->from;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->order)
{
$query .= (string) $this->order;
}
break;
case 'update':
$query .= (string) $this->update;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
$query .= (string) $this->set;
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->order)
{
$query .= (string) $this->order;
}
break;
default:
$query = parent::__toString();
break;
}
return $query;
}
/**
* Casts a value to a char.
*
* Ensure that the value is properly quoted before passing to the method.
*
* @param string $value The value to cast as a char.
*
* @return string Returns the cast value.
*
* @since 11.1
*/
public function castAsChar($value)
{
return 'CAST(' . $value . ' as NVARCHAR(10))';
}
/**
* Gets the function to determine the length of a character string.
*
* @param string $field A value.
* @param string $operator Comparison operator between charLength integer value and $condition
* @param string $condition Integer value to compare charLength with.
*
* @return string The required char length call.
*
* @since 11.1
*/
public function charLength($field, $operator = null, $condition = null)
{
return 'DATALENGTH(' . $field . ')' . (isset($operator) && isset($condition) ? ' ' . $operator . ' ' . $condition : '');
}
/**
* Concatenates an array of column names or values.
*
* @param array $values An array of values to concatenate.
* @param string $separator As separator to place between each value.
*
* @return string The concatenated values.
*
* @since 11.1
*/
public function concatenate($values, $separator = null)
{
if ($separator)
{
return '(' . implode('+' . $this->quote($separator) . '+', $values) . ')';
}
else
{
return '(' . implode('+', $values) . ')';
}
}
/**
* Gets the current date and time.
*
* @return string
*
* @since 11.1
*/
public function currentTimestamp()
{
return 'GETDATE()';
}
/**
* Get the length of a string in bytes.
*
* @param string $value The string to measure.
*
* @return integer
*
* @since 11.1
*/
public function length($value)
{
return 'LEN(' . $value . ')';
}
/**
* Add to the current date and time.
* Usage:
* $query->select($query->dateAdd());
* Prefixing the interval with a - (negative sign) will cause subtraction to be used.
*
* @param datetime $date The date to add to; type may be time or datetime.
* @param string $interval The string representation of the appropriate number of units
* @param string $datePart The part of the date to perform the addition on
*
* @return string The string with the appropriate sql for addition of dates
*
* @since 13.1
* @note Not all drivers support all units.
* @link http://msdn.microsoft.com/en-us/library/ms186819.aspx for more information
*/
public function dateAdd($date, $interval, $datePart)
{
return "DATEADD('" . $datePart . "', '" . $interval . "', '" . $date . "'" . ')';
}
/**
* Method to modify a query already in string format with the needed
* additions to make the query limited to a particular number of
* results, or start at a particular offset.
*
* @param string $query The query in string format
* @param integer $limit The limit for the result set
* @param integer $offset The offset for the result set
*
* @return string
*
* @since 12.1
*/
public function processLimit($query, $limit, $offset = 0)
{
if ($limit == 0 && $offset == 0)
{
return $query;
}
$start = $offset + 1;
$end = $offset + $limit;
$orderBy = stristr($query, 'ORDER BY');
if (is_null($orderBy) || empty($orderBy))
{
$orderBy = 'ORDER BY (select 0)';
}
$query = str_ireplace($orderBy, '', $query);
$rowNumberText = ', ROW_NUMBER() OVER (' . $orderBy . ') AS RowNumber FROM ';
$query = preg_replace('/\sFROM\s/i', $rowNumberText, $query, 1);
$query = 'SELECT * FROM (' . $query . ') A WHERE A.RowNumber BETWEEN ' . $start . ' AND ' . $end;
return $query;
}
/**
* Sets the offset and limit for the result set, if the database driver supports it.
*
* Usage:
* $query->setLimit(100, 0); (retrieve 100 rows, starting at first record)
* $query->setLimit(50, 50); (retrieve 50 rows, starting at 50th record)
*
* @param integer $limit The limit for the result set
* @param integer $offset The offset for the result set
*
* @return F0FDatabaseQuery Returns this object to allow chaining.
*
* @since 12.1
*/
public function setLimit($limit = 0, $offset = 0)
{
$this->limit = (int) $limit;
$this->offset = (int) $offset;
return $this;
}
/**
* Return correct rand() function for MSSQL.
*
* Ensure that the rand() function is MSSQL compatible.
*
* Usage:
* $query->Rand();
*
* @return string The correct rand function.
*
* @since 3.5
*/
public function Rand()
{
return ' NEWID() ';
}
}
home/wuectly/www/libraries/fof/database/iterator/sqlsrv.php 0000604 00000002430 15245657575 0020222 0 ustar 00 cursor);
}
/**
* Method to fetch a row from the result set cursor as an object.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*/
protected function fetchObject()
{
return @sqlsrv_fetch_object($this->cursor, $this->class);
}
/**
* Method to free up the memory used for the result set.
*
* @return void
*/
protected function freeResult()
{
@sqlsrv_free_stmt($this->cursor);
}
}
home/wuectly/www/libraries/fof/database/query/sqlsrv.php 0000604 00000021007 15245662410 0017517 0 ustar 00 type)
{
case 'select':
$query .= (string) $this->select;
$query .= (string) $this->from;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->group)
{
$query .= (string) $this->group;
}
if ($this->order)
{
$query .= (string) $this->order;
}
if ($this->having)
{
$query .= (string) $this->having;
}
if ($this instanceof FOFDatabaseQueryLimitable && ($this->limit > 0 || $this->offset > 0))
{
$query = $this->processLimit($query, $this->limit, $this->offset);
}
break;
case 'insert':
$query .= (string) $this->insert;
// Set method
if ($this->set)
{
$query .= (string) $this->set;
}
// Columns-Values method
elseif ($this->values)
{
if ($this->columns)
{
$query .= (string) $this->columns;
}
$elements = $this->insert->getElements();
$tableName = array_shift($elements);
$query .= 'VALUES ';
$query .= (string) $this->values;
if ($this->autoIncrementField)
{
$query = 'SET IDENTITY_INSERT ' . $tableName . ' ON;' . $query . 'SET IDENTITY_INSERT ' . $tableName . ' OFF;';
}
if ($this->where)
{
$query .= (string) $this->where;
}
}
break;
case 'delete':
$query .= (string) $this->delete;
$query .= (string) $this->from;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->order)
{
$query .= (string) $this->order;
}
break;
case 'update':
$query .= (string) $this->update;
if ($this->join)
{
// Special case for joins
foreach ($this->join as $join)
{
$query .= (string) $join;
}
}
$query .= (string) $this->set;
if ($this->where)
{
$query .= (string) $this->where;
}
if ($this->order)
{
$query .= (string) $this->order;
}
break;
default:
$query = parent::__toString();
break;
}
return $query;
}
/**
* Casts a value to a char.
*
* Ensure that the value is properly quoted before passing to the method.
*
* @param string $value The value to cast as a char.
*
* @return string Returns the cast value.
*
* @since 11.1
*/
public function castAsChar($value)
{
return 'CAST(' . $value . ' as NVARCHAR(10))';
}
/**
* Gets the function to determine the length of a character string.
*
* @param string $field A value.
* @param string $operator Comparison operator between charLength integer value and $condition
* @param string $condition Integer value to compare charLength with.
*
* @return string The required char length call.
*
* @since 11.1
*/
public function charLength($field, $operator = null, $condition = null)
{
return 'DATALENGTH(' . $field . ')' . (isset($operator) && isset($condition) ? ' ' . $operator . ' ' . $condition : '');
}
/**
* Concatenates an array of column names or values.
*
* @param array $values An array of values to concatenate.
* @param string $separator As separator to place between each value.
*
* @return string The concatenated values.
*
* @since 11.1
*/
public function concatenate($values, $separator = null)
{
if ($separator)
{
return '(' . implode('+' . $this->quote($separator) . '+', $values) . ')';
}
else
{
return '(' . implode('+', $values) . ')';
}
}
/**
* Gets the current date and time.
*
* @return string
*
* @since 11.1
*/
public function currentTimestamp()
{
return 'GETDATE()';
}
/**
* Get the length of a string in bytes.
*
* @param string $value The string to measure.
*
* @return integer
*
* @since 11.1
*/
public function length($value)
{
return 'LEN(' . $value . ')';
}
/**
* Add to the current date and time.
* Usage:
* $query->select($query->dateAdd());
* Prefixing the interval with a - (negative sign) will cause subtraction to be used.
*
* @param datetime $date The date to add to; type may be time or datetime.
* @param string $interval The string representation of the appropriate number of units
* @param string $datePart The part of the date to perform the addition on
*
* @return string The string with the appropriate sql for addition of dates
*
* @since 13.1
* @note Not all drivers support all units.
* @link http://msdn.microsoft.com/en-us/library/ms186819.aspx for more information
*/
public function dateAdd($date, $interval, $datePart)
{
return "DATEADD('" . $datePart . "', '" . $interval . "', '" . $date . "'" . ')';
}
/**
* Method to modify a query already in string format with the needed
* additions to make the query limited to a particular number of
* results, or start at a particular offset.
*
* @param string $query The query in string format
* @param integer $limit The limit for the result set
* @param integer $offset The offset for the result set
*
* @return string
*
* @since 12.1
*/
public function processLimit($query, $limit, $offset = 0)
{
if ($limit == 0 && $offset == 0)
{
return $query;
}
$start = $offset + 1;
$end = $offset + $limit;
$orderBy = stristr($query, 'ORDER BY');
if (is_null($orderBy) || empty($orderBy))
{
$orderBy = 'ORDER BY (select 0)';
}
$query = str_ireplace($orderBy, '', $query);
$rowNumberText = ', ROW_NUMBER() OVER (' . $orderBy . ') AS RowNumber FROM ';
$query = preg_replace('/\sFROM\s/i', $rowNumberText, $query, 1);
$query = 'SELECT * FROM (' . $query . ') A WHERE A.RowNumber BETWEEN ' . $start . ' AND ' . $end;
return $query;
}
/**
* Sets the offset and limit for the result set, if the database driver supports it.
*
* Usage:
* $query->setLimit(100, 0); (retrieve 100 rows, starting at first record)
* $query->setLimit(50, 50); (retrieve 50 rows, starting at 50th record)
*
* @param integer $limit The limit for the result set
* @param integer $offset The offset for the result set
*
* @return FOFDatabaseQuery Returns this object to allow chaining.
*
* @since 12.1
*/
public function setLimit($limit = 0, $offset = 0)
{
$this->limit = (int) $limit;
$this->offset = (int) $offset;
return $this;
}
/**
* Return correct rand() function for MSSQL.
*
* Ensure that the rand() function is MSSQL compatible.
*
* Usage:
* $query->Rand();
*
* @return string The correct rand function.
*
* @since 3.5
*/
public function Rand()
{
return ' NEWID() ';
}
}
home/wuectly/www/libraries/joomla/database/iterator/sqlsrv.php 0000604 00000002207 15245721203 0020707 0 ustar 00
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* SQL server database iterator.
*
* @since 3.0.0
*/
class JDatabaseIteratorSqlsrv extends JDatabaseIterator
{
/**
* Get the number of rows in the result set for the executed SQL given by the cursor.
*
* @return integer The number of rows in the result set.
*
* @since 3.0.0
* @see Countable::count()
*/
public function count()
{
return sqlsrv_num_rows($this->cursor);
}
/**
* Method to fetch a row from the result set cursor as an object.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 3.0.0
*/
protected function fetchObject()
{
return sqlsrv_fetch_object($this->cursor, $this->class);
}
/**
* Method to free up the memory used for the result set.
*
* @return void
*
* @since 3.0.0
*/
protected function freeResult()
{
sqlsrv_free_stmt($this->cursor);
}
}
home/wuectly/www/libraries/joomla/database/driver/sqlsrv.php 0000604 00000066027 15245727215 0020374 0 ustar 00
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* SQL Server database driver
*
* @link https://msdn.microsoft.com/en-us/library/cc296152(SQL.90).aspx
* @since 3.0.0
*/
class JDatabaseDriverSqlsrv extends JDatabaseDriver
{
/**
* The name of the database driver.
*
* @var string
* @since 3.0.0
*/
public $name = 'sqlsrv';
/**
* The type of the database server family supported by this driver.
*
* @var string
* @since CMS 3.5.0
*/
public $serverType = 'mssql';
/**
* The character(s) used to quote SQL statement names such as table names or field names,
* etc. The child classes should define this as necessary. If a single character string the
* same character is used for both sides of the quoted name, else the first character will be
* used for the opening quote and the second for the closing quote.
*
* @var string
* @since 3.0.0
*/
protected $nameQuote = '[]';
/**
* The null or zero representation of a timestamp for the database driver. This should be
* defined in child classes to hold the appropriate value for the engine.
*
* @var string
* @since 3.0.0
*/
protected $nullDate = '1900-01-01 00:00:00';
/**
* @var string The minimum supported database version.
* @since 3.0.0
*/
protected static $dbMinimum = '10.50.1600.1';
/**
* Test to see if the SQLSRV connector is available.
*
* @return boolean True on success, false otherwise.
*
* @since 3.0.0
*/
public static function isSupported()
{
return function_exists('sqlsrv_connect');
}
/**
* Constructor.
*
* @param array $options List of options used to configure the connection
*
* @since 3.0.0
*/
public function __construct($options)
{
// Get some basic values from the options.
$options['host'] = (isset($options['host'])) ? $options['host'] : 'localhost';
$options['user'] = (isset($options['user'])) ? $options['user'] : '';
$options['password'] = (isset($options['password'])) ? $options['password'] : '';
$options['database'] = (isset($options['database'])) ? $options['database'] : '';
$options['select'] = (isset($options['select'])) ? (bool) $options['select'] : true;
// Finalize initialisation
parent::__construct($options);
}
/**
* Connects to the database if needed.
*
* @return void Returns void if the database connected successfully.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function connect()
{
if ($this->connection)
{
return;
}
// Build the connection configuration array.
$config = array(
'Database' => $this->options['database'],
'uid' => $this->options['user'],
'pwd' => $this->options['password'],
'CharacterSet' => 'UTF-8',
'ReturnDatesAsStrings' => true,
);
// Make sure the SQLSRV extension for PHP is installed and enabled.
if (!self::isSupported())
{
throw new JDatabaseExceptionUnsupported('The sqlsrv extension for PHP is not installed or enabled..');
}
// Attempt to connect to the server.
if (!($this->connection = @ sqlsrv_connect($this->options['host'], $config)))
{
throw new JDatabaseExceptionConnecting('Database sqlsrv_connect failed, ' . print_r(sqlsrv_errors(), true));
}
// Make sure that DB warnings are not returned as errors.
sqlsrv_configure('WarningsReturnAsErrors', 0);
// If auto-select is enabled select the given database.
if ($this->options['select'] && !empty($this->options['database']))
{
$this->select($this->options['database']);
}
// Set charactersets.
$this->utf = $this->setUtf();
// Set QUOTED_IDENTIFIER always ON
sqlsrv_query($this->connection, 'SET QUOTED_IDENTIFIER ON');
}
/**
* Disconnects the database.
*
* @return void
*
* @since 3.0.0
*/
public function disconnect()
{
// Close the connection.
if (is_resource($this->connection))
{
foreach ($this->disconnectHandlers as $h)
{
call_user_func_array($h, array( &$this));
}
sqlsrv_close($this->connection);
}
$this->connection = null;
}
/**
* Get table constraints
*
* @param string $tableName The name of the database table.
*
* @return array Any constraints available for the table.
*
* @since 3.0.0
*/
protected function getTableConstraints($tableName)
{
$this->connect();
$query = $this->getQuery(true);
$this->setQuery(
'SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_NAME = ' . $query->quote($tableName)
);
return $this->loadColumn();
}
/**
* Rename constraints.
*
* @param array $constraints Array(strings) of table constraints
* @param string $prefix A string
* @param string $backup A string
*
* @return void
*
* @since 3.0.0
*/
protected function renameConstraints($constraints = array(), $prefix = null, $backup = null)
{
$this->connect();
foreach ($constraints as $constraint)
{
$this->setQuery('sp_rename ' . $constraint . ',' . str_replace($prefix, $backup, $constraint));
$this->execute();
}
}
/**
* Method to escape a string for usage in an SQL statement.
*
* The escaping for MSSQL isn't handled in the driver though that would be nice. Because of this we need
* to handle the escaping ourselves.
*
* @param string $text The string to be escaped.
* @param boolean $extra Optional parameter to provide extra escaping.
*
* @return string The escaped string.
*
* @since 3.0.0
*/
public function escape($text, $extra = false)
{
if (is_int($text))
{
return $text;
}
if (is_float($text))
{
// Force the dot as a decimal point.
return str_replace(',', '.', $text);
}
$result = str_replace("'", "''", $text);
// SQL Server does not accept NULL byte in query string
$result = str_replace("\0", "' + CHAR(0) + N'", $result);
// Fix for SQL Server escape sequence, see https://support.microsoft.com/en-us/kb/164291
$result = str_replace(
array("\\\n", "\\\r", "\\\\\r\r\n"),
array("\\\\\n\n", "\\\\\r\r", "\\\\\r\n\r\n"),
$result
);
if ($extra)
{
// Escape special chars
$result = str_replace(
array('[', '_', '%'),
array('[[]', '[_]', '[%]'),
$result
);
}
return $result;
}
/**
* Quotes and optionally escapes a string to database requirements for use in database queries.
*
* @param mixed $text A string or an array of strings to quote.
* @param boolean $escape True (default) to escape the string, false to leave it unchanged.
*
* @return string The quoted input string.
*
* @note Accepting an array of strings was added in 3.1.4.
* @since 1.7.0
*/
public function quote($text, $escape = true)
{
if (is_array($text))
{
return parent::quote($text, $escape);
}
// To support unicode on MSSQL we have to add prefix N
return 'N\'' . ($escape ? $this->escape($text) : $text) . '\'';
}
/**
* Quotes a binary string to database requirements for use in database queries.
*
* @param mixed $data A binary string to quote.
*
* @return string The binary quoted input string.
*
* @since 3.9.12
*/
public function quoteBinary($data)
{
// ODBC syntax for hexadecimal literals
return '0x' . bin2hex($data);
}
/**
* Determines if the connection to the server is active.
*
* @return boolean True if connected to the database engine.
*
* @since 3.0.0
*/
public function connected()
{
// TODO: Run a blank query here
return true;
}
/**
* Drops a table from the database.
*
* @param string $tableName The name of the database table to drop.
* @param boolean $ifExists Optionally specify that the table must exist before it is dropped.
*
* @return JDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 3.0.0
*/
public function dropTable($tableName, $ifExists = true)
{
$this->connect();
$query = $this->getQuery(true);
if ($ifExists)
{
$this->setQuery(
'IF EXISTS(SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = ' . $query->quote($tableName) . ') DROP TABLE ' . $tableName
);
}
else
{
$this->setQuery('DROP TABLE ' . $tableName);
}
$this->execute();
return $this;
}
/**
* Get the number of affected rows for the previous executed SQL statement.
*
* @return integer The number of affected rows.
*
* @since 3.0.0
*/
public function getAffectedRows()
{
$this->connect();
return sqlsrv_rows_affected($this->cursor);
}
/**
* Method to get the database collation in use by sampling a text field of a table in the database.
*
* @return mixed The collation in use by the database or boolean false if not supported.
*
* @since 3.0.0
*/
public function getCollation()
{
// TODO: Not fake this
return 'MSSQL UTF-8 (UCS2)';
}
/**
* Method to get the database connection collation, as reported by the driver. If the connector doesn't support
* reporting this value please return an empty string.
*
* @return string
*/
public function getConnectionCollation()
{
// TODO: Not fake this
return 'MSSQL UTF-8 (UCS2)';
}
/**
* Get the number of returned rows for the previous executed SQL statement.
*
* @param resource $cursor An optional database cursor resource to extract the row count from.
*
* @return integer The number of returned rows.
*
* @since 3.0.0
*/
public function getNumRows($cursor = null)
{
$this->connect();
return sqlsrv_num_rows($cursor ? $cursor : $this->cursor);
}
/**
* Retrieves field information about the given tables.
*
* @param mixed $table A table name
* @param boolean $typeOnly True to only return field types.
*
* @return array An array of fields.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function getTableColumns($table, $typeOnly = true)
{
$result = array();
$table_temp = $this->replacePrefix((string) $table);
// Set the query to get the table fields statement.
$this->setQuery(
'SELECT column_name as Field, data_type as Type, is_nullable as \'Null\', column_default as \'Default\'' .
' FROM information_schema.columns WHERE table_name = ' . $this->quote($table_temp)
);
$fields = $this->loadObjectList();
// If we only want the type as the value add just that to the list.
if ($typeOnly)
{
foreach ($fields as $field)
{
$result[$field->Field] = preg_replace('/[(0-9)]/', '', $field->Type);
}
}
// If we want the whole field data object add that to the list.
else
{
foreach ($fields as $field)
{
$field->Default = preg_replace("/(^(\(\(|\('|\(N'|\()|(('\)|(?Default);
$result[$field->Field] = $field;
}
}
return $result;
}
/**
* Shows the table CREATE statement that creates the given tables.
*
* This is unsupported by MSSQL.
*
* @param mixed $tables A table name or a list of table names.
*
* @return array A list of the create SQL for the tables.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function getTableCreate($tables)
{
$this->connect();
return '';
}
/**
* Get the details list of keys for a table.
*
* @param string $table The name of the table.
*
* @return array An array of the column specification for the table.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function getTableKeys($table)
{
$this->connect();
// TODO To implement.
return array();
}
/**
* Method to get an array of all tables in the database.
*
* @return array An array of all the tables in the database.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function getTableList()
{
$this->connect();
// Set the query to get the tables statement.
$this->setQuery('SELECT name FROM ' . $this->getDatabase() . '.sys.Tables WHERE type = \'U\';');
$tables = $this->loadColumn();
return $tables;
}
/**
* Get the version of the database connector.
*
* @return string The database connector version.
*
* @since 3.0.0
*/
public function getVersion()
{
$this->connect();
$version = sqlsrv_server_info($this->connection);
return $version['SQLServerVersion'];
}
/**
* Inserts a row into a table based on an object's properties.
*
* @param string $table The name of the database table to insert into.
* @param object &$object A reference to an object whose public properties match the table fields.
* @param string $key The name of the primary key. If provided the object property is updated.
*
* @return boolean True on success.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function insertObject($table, &$object, $key = null)
{
$fields = array();
$values = array();
$statement = 'INSERT INTO ' . $this->quoteName($table) . ' (%s) VALUES (%s)';
foreach (get_object_vars($object) as $k => $v)
{
// Only process non-null scalars.
if (is_array($v) or is_object($v) or $v === null)
{
continue;
}
if (!$this->checkFieldExists($table, $k))
{
continue;
}
if ($k[0] == '_')
{
// Internal field
continue;
}
if ($k == $key && $key == 0)
{
continue;
}
$fields[] = $this->quoteName($k);
$values[] = $this->Quote($v);
}
// Set the query and execute the insert.
$this->setQuery(sprintf($statement, implode(',', $fields), implode(',', $values)));
if (!$this->execute())
{
return false;
}
$id = $this->insertid();
if ($key && $id)
{
$object->$key = $id;
}
return true;
}
/**
* Method to get the auto-incremented value from the last INSERT statement.
*
* @return integer The value of the auto-increment field from the last inserted row.
*
* @since 3.0.0
*/
public function insertid()
{
$this->connect();
// TODO: SELECT IDENTITY
$this->setQuery('SELECT @@IDENTITY');
return (int) $this->loadResult();
}
/**
* Execute the SQL statement.
*
* @return mixed A database cursor resource on success, boolean false on failure.
*
* @since 3.0.0
* @throws RuntimeException
* @throws Exception
*/
public function execute()
{
$this->connect();
// Take a local copy so that we don't modify the original query and cause issues later
$query = $this->replacePrefix((string) $this->sql);
if (!($this->sql instanceof JDatabaseQuery) && ($this->limit > 0 || $this->offset > 0))
{
$query = $this->limit($query, $this->limit, $this->offset);
}
if (!is_resource($this->connection))
{
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database');
throw new JDatabaseExceptionExecuting($query, $this->errorMsg, $this->errorNum);
}
// Increment the query counter.
$this->count++;
// Reset the error values.
$this->errorNum = 0;
$this->errorMsg = '';
// If debugging is enabled then let's log the query.
if ($this->debug)
{
// Add the query to the object queue.
$this->log[] = $query;
JLog::add($query, JLog::DEBUG, 'databasequery');
$this->timings[] = microtime(true);
}
// SQLSrv_num_rows requires a static or keyset cursor.
if (strncmp(ltrim(strtoupper($query)), 'SELECT', strlen('SELECT')) == 0)
{
$array = array('Scrollable' => SQLSRV_CURSOR_KEYSET);
}
else
{
$array = array();
}
// Execute the query. Error suppression is used here to prevent warnings/notices that the connection has been lost.
$this->cursor = @sqlsrv_query($this->connection, $query, array(), $array);
if ($this->debug)
{
$this->timings[] = microtime(true);
if (defined('DEBUG_BACKTRACE_IGNORE_ARGS'))
{
$this->callStacks[] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
}
else
{
$this->callStacks[] = debug_backtrace();
}
}
// If an error occurred handle it.
if (!$this->cursor)
{
// Get the error number and message before we execute any more queries.
$errorNum = $this->getErrorNumber();
$errorMsg = $this->getErrorMessage();
// Check if the server was disconnected.
if (!$this->connected())
{
try
{
// Attempt to reconnect.
$this->connection = null;
$this->connect();
}
// If connect fails, ignore that exception and throw the normal exception.
catch (RuntimeException $e)
{
// Get the error number and message.
$this->errorNum = $this->getErrorNumber();
$this->errorMsg = $this->getErrorMessage();
// Throw the normal query exception.
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
throw new JDatabaseExceptionExecuting($query, $this->errorMsg, $this->errorNum, $e);
}
// Since we were able to reconnect, run the query again.
return $this->execute();
}
// The server was not disconnected.
else
{
// Get the error number and message from before we tried to reconnect.
$this->errorNum = $errorNum;
$this->errorMsg = $errorMsg;
// Throw the normal query exception.
JLog::add(JText::sprintf('JLIB_DATABASE_QUERY_FAILED', $this->errorNum, $this->errorMsg), JLog::ERROR, 'database-error');
throw new JDatabaseExceptionExecuting($query, $this->errorMsg, $this->errorNum);
}
}
return $this->cursor;
}
/**
* This function replaces a string identifier $prefix with the string held is the
* tablePrefix class variable.
*
* @param string $query The SQL statement to prepare.
* @param string $prefix The common table prefix.
*
* @return string The processed SQL statement.
*
* @since 3.0.0
*/
public function replacePrefix($query, $prefix = '#__')
{
$query = trim($query);
if (strpos($query, "'"))
{
$parts = explode("'", $query);
for ($nIndex = 0, $size = count($parts); $nIndex < $size; $nIndex = $nIndex + 2)
{
if (strpos($parts[$nIndex], $prefix) !== false)
{
$parts[$nIndex] = str_replace($prefix, $this->tablePrefix, $parts[$nIndex]);
}
}
$query = implode("'", $parts);
}
else
{
$query = str_replace($prefix, $this->tablePrefix, $query);
}
return $query;
}
/**
* Select a database for use.
*
* @param string $database The name of the database to select for use.
*
* @return boolean True if the database was successfully selected.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function select($database)
{
$this->connect();
if (!$database)
{
return false;
}
if (!sqlsrv_query($this->connection, 'USE ' . $database, null, array('scrollable' => SQLSRV_CURSOR_STATIC)))
{
throw new JDatabaseExceptionConnecting('Could not connect to SQL Server database.');
}
return true;
}
/**
* Set the connection to use UTF-8 character encoding.
*
* @return boolean True on success.
*
* @since 3.0.0
*/
public function setUtf()
{
return false;
}
/**
* Method to commit a transaction.
*
* @param boolean $toSavepoint If true, commit to the last savepoint.
*
* @return void
*
* @since 3.0.0
* @throws RuntimeException
*/
public function transactionCommit($toSavepoint = false)
{
$this->connect();
if (!$toSavepoint || $this->transactionDepth <= 1)
{
if ($this->setQuery('COMMIT TRANSACTION')->execute())
{
$this->transactionDepth = 0;
}
return;
}
$this->transactionDepth--;
}
/**
* Method to roll back a transaction.
*
* @param boolean $toSavepoint If true, rollback to the last savepoint.
*
* @return void
*
* @since 3.0.0
* @throws RuntimeException
*/
public function transactionRollback($toSavepoint = false)
{
$this->connect();
if (!$toSavepoint || $this->transactionDepth <= 1)
{
if ($this->setQuery('ROLLBACK TRANSACTION')->execute())
{
$this->transactionDepth = 0;
}
return;
}
$savepoint = 'SP_' . ($this->transactionDepth - 1);
$this->setQuery('ROLLBACK TRANSACTION ' . $this->quoteName($savepoint));
if ($this->execute())
{
$this->transactionDepth--;
}
}
/**
* Method to initialize a transaction.
*
* @param boolean $asSavepoint If true and a transaction is already active, a savepoint will be created.
*
* @return void
*
* @since 3.0.0
* @throws RuntimeException
*/
public function transactionStart($asSavepoint = false)
{
$this->connect();
if (!$asSavepoint || !$this->transactionDepth)
{
if ($this->setQuery('BEGIN TRANSACTION')->execute())
{
$this->transactionDepth = 1;
}
return;
}
$savepoint = 'SP_' . $this->transactionDepth;
$this->setQuery('BEGIN TRANSACTION ' . $this->quoteName($savepoint));
if ($this->execute())
{
$this->transactionDepth++;
}
}
/**
* Method to fetch a row from the result set cursor as an array.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 3.0.0
*/
protected function fetchArray($cursor = null)
{
return sqlsrv_fetch_array($cursor ? $cursor : $this->cursor, SQLSRV_FETCH_NUMERIC);
}
/**
* Method to fetch a row from the result set cursor as an associative array.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 3.0.0
*/
protected function fetchAssoc($cursor = null)
{
return sqlsrv_fetch_array($cursor ? $cursor : $this->cursor, SQLSRV_FETCH_ASSOC);
}
/**
* Method to fetch a row from the result set cursor as an object.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
* @param string $class The class name to use for the returned row object.
*
* @return mixed Either the next row from the result set or false if there are no more rows.
*
* @since 3.0.0
*/
protected function fetchObject($cursor = null, $class = 'stdClass')
{
// Class has to be loaded for sqlsrv on windows platform
class_exists($class);
return sqlsrv_fetch_object($cursor ? $cursor : $this->cursor, $class);
}
/**
* Method to free up the memory used for the result set.
*
* @param mixed $cursor The optional result set cursor from which to fetch the row.
*
* @return void
*
* @since 3.0.0
*/
protected function freeResult($cursor = null)
{
sqlsrv_free_stmt($cursor ? $cursor : $this->cursor);
}
/**
* Method to check and see if a field exists in a table.
*
* @param string $table The table in which to verify the field.
* @param string $field The field to verify.
*
* @return boolean True if the field exists in the table.
*
* @since 3.0.0
*/
protected function checkFieldExists($table, $field)
{
$this->connect();
$table = $this->replacePrefix((string) $table);
$query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '$table' AND COLUMN_NAME = '$field' ORDER BY ORDINAL_POSITION";
$this->setQuery($query);
if ($this->loadResult())
{
return true;
}
else
{
return false;
}
}
/**
* Method to wrap an SQL statement to provide a LIMIT and OFFSET behavior for scrolling through a result set.
*
* @param string $query The SQL statement to process.
* @param integer $limit The maximum affected rows to set.
* @param integer $offset The affected row offset to set.
*
* @return string The processed SQL statement.
*
* @since 3.0.0
*/
protected function limit($query, $limit, $offset)
{
if ($limit)
{
$total = $offset + $limit;
$position = stripos($query, 'SELECT');
$distinct = stripos($query, 'SELECT DISTINCT');
if ($position === $distinct)
{
$query = substr_replace($query, 'SELECT DISTINCT TOP ' . (int) $total, $position, 15);
}
else
{
$query = substr_replace($query, 'SELECT TOP ' . (int) $total, $position, 6);
}
}
if (!$offset)
{
return $query;
}
return PHP_EOL
. 'SELECT * FROM (SELECT *, ROW_NUMBER() OVER (ORDER BY (SELECT 0)) AS RowNumber FROM ('
. $query
. PHP_EOL . ') AS A) AS A WHERE RowNumber > ' . (int) $offset;
}
/**
* Renames a table in the database.
*
* @param string $oldTable The name of the table to be renamed
* @param string $newTable The new name for the table.
* @param string $backup Table prefix
* @param string $prefix For the table - used to rename constraints in non-mysql databases
*
* @return JDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function renameTable($oldTable, $newTable, $backup = null, $prefix = null)
{
$constraints = array();
if (!is_null($prefix) && !is_null($backup))
{
$constraints = $this->getTableConstraints($oldTable);
}
if (!empty($constraints))
{
$this->renameConstraints($constraints, $prefix, $backup);
}
$this->setQuery("sp_rename '" . $oldTable . "', '" . $newTable . "'");
return $this->execute();
}
/**
* Locks a table in the database.
*
* @param string $tableName The name of the table to lock.
*
* @return JDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function lockTable($tableName)
{
return $this;
}
/**
* Unlocks tables in the database.
*
* @return JDatabaseDriverSqlsrv Returns this object to support chaining.
*
* @since 3.0.0
* @throws RuntimeException
*/
public function unlockTables()
{
return $this;
}
/**
* Return the actual SQL Error number
*
* @return integer The SQL Error number
*
* @since 3.4.6
*/
protected function getErrorNumber()
{
$errors = sqlsrv_errors();
return $errors[0]['code'];
}
/**
* Return the actual SQL Error message
*
* @return string The SQL Error message
*
* @since 3.4.6
*/
protected function getErrorMessage()
{
$errors = sqlsrv_errors();
$errorMessage = (string) $errors[0]['message'];
// Replace the Databaseprefix with `#__` if we are not in Debug
if (!$this->debug)
{
$errorMessage = str_replace($this->tablePrefix, '#__', $errorMessage);
}
return $errorMessage;
}
/**
* Get the query strings to alter the character set and collation of a table.
*
* @param string $tableName The name of the table
*
* @return string[] The queries required to alter the table's character set and collation
*
* @since CMS 3.5.0
*/
public function getAlterTableCharacterSet($tableName)
{
return array();
}
/**
* Return the query string to create new Database.
* Each database driver, other than MySQL, need to override this member to return correct string.
*
* @param stdClass $options Object used to pass user and database name to database driver.
* This object must have "db_name" and "db_user" set.
* @param boolean $utf True if the database supports the UTF-8 character set.
*
* @return string The query that creates database
*
* @since 3.0.1
*/
protected function getCreateDatabaseQuery($options, $utf)
{
return 'CREATE DATABASE ' . $this->quoteName($options->db_name);
}
}