136 lines
3.7 KiB
PHP
136 lines
3.7 KiB
PHP
<?php
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namespace Doctrine\DBAL\Platforms;
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/**
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* Enter description here...
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*
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* @since 2.0
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*/
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class FirebirdPlatform extends AbstractPlatform
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{
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/**
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* Constructor.
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*/
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public function __construct()
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{
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parent::__construct();
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}
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/**
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* Adds an driver-specific LIMIT clause to the query
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*
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* @param string $query query to modify
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* @param integer $limit limit the number of rows
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* @param integer $offset start reading from given offset
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* @return string modified query
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* @override
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*/
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public function writeLimitClause($query, $limit, $offset)
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{
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if ( ! $offset) {
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$offset = 0;
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}
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if ($limit > 0) {
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$query = preg_replace('/^([\s(])*SELECT(?!\s*FIRST\s*\d+)/i',
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"SELECT FIRST $limit SKIP $offset", $query);
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}
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return $query;
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}
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/**
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* return string for internal table used when calling only a function
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*
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* @return string for internal table used when calling only a function
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*/
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public function getFunctionTableExpression()
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{
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return ' FROM RDB$DATABASE';
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}
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/**
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* build string to define escape pattern string
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*
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* @return string define escape pattern
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* @override
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*/
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public function getPatternEscapeStringExpression()
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{
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return " ESCAPE '". $this->_properties['escape_pattern'] ."'";
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}
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/**
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* Obtain DBMS specific SQL code portion needed to set the CHARACTER SET
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* of a field declaration to be used in statements like CREATE TABLE.
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*
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* @param string $charset name of the charset
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* @return string DBMS specific SQL code portion needed to set the CHARACTER SET
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* of a field declaration.
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*/
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public function getCharsetFieldDeclaration($charset)
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{
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return 'CHARACTER SET ' . $charset;
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}
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/**
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* Obtain DBMS specific SQL code portion needed to set the COLLATION
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* of a field declaration to be used in statements like CREATE TABLE.
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*
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* @param string $collation name of the collation
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* @return string DBMS specific SQL code portion needed to set the COLLATION
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* of a field declaration.
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*/
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public function getCollationFieldDeclaration($collation)
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{
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return 'COLLATE ' . $collation;
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $sequenceName
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* @override
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*/
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public function getSequenceNextValSql($sequenceName)
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{
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return 'SELECT GEN_ID(' . $this->quoteIdentifier($sequenceName) . ', 1) FROM RDB$DATABASE';
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $level
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* @override
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*/
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protected function _getTransactionIsolationLevelSql($level)
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{
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switch ($level) {
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case Doctrine_DBAL_Connection::TRANSACTION_READ_UNCOMMITTED:
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return 'READ COMMITTED RECORD_VERSION';
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case Doctrine_DBAL_Connection::TRANSACTION_READ_COMMITTED:
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return 'READ COMMITTED NO RECORD_VERSION';
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case Doctrine_DBAL_Connection::TRANSACTION_REPEATABLE_READ:
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return 'SNAPSHOT';
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case Doctrine_DBAL_Connection::TRANSACTION_SERIALIZABLE:
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return 'SNAPSHOT TABLE STABILITY';
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default:
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return parent::_getTransactionIsolationLevelSql($level);
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}
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $level
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* @override
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*/
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public function getSetTransactionIsolationSql($level)
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{
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return 'SET TRANSACTION ISOLATION LEVEL ' . $this->_getTransactionIsolationLevelSql($level);
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}
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public function getName()
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{
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return 'firebird';
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}
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} |