130 lines
5.3 KiB
PHP
130 lines
5.3 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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Doctrine::autoload('Doctrine_Connection');
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/**
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* Doctrine_Connection_Oracle
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*
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* @package Doctrine
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @category Object Relational Mapping
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* @link www.phpdoctrine.com
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* @since 1.0
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* @version $Revision$
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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class Doctrine_Connection_Oracle extends Doctrine_Connection
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{
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/**
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* @var string $driverName the name of this connection driver
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*/
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protected $driverName = 'Oracle';
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public function __construct(Doctrine_Manager $manager, $adapter)
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{
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$this->supported = array(
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'sequences' => true,
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'indexes' => true,
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'summary_functions' => true,
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'order_by_text' => true,
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'current_id' => true,
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'affected_rows' => true,
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'transactions' => true,
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'savepoints' => true,
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'limit_queries' => true,
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'LOBs' => true,
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'replace' => 'emulated',
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'sub_selects' => true,
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'auto_increment' => false, // implementation is broken
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'primary_key' => true,
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'result_introspection' => true,
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'prepared_statements' => true,
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'identifier_quoting' => true,
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'pattern_escaping' => true,
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);
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/**
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$this->options['DBA_username'] = false;
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$this->options['DBA_password'] = false;
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$this->options['database_name_prefix'] = false;
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$this->options['emulate_database'] = true;
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$this->options['default_tablespace'] = false;
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$this->options['default_text_field_length'] = 2000;
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$this->options['result_prefetching'] = false;
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*/
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parent::__construct($manager, $adapter);
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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 $offset start reading from given offset
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* @return string the modified query
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*/
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public function modifyLimitQuery($query, $limit, $offset)
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{
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/**
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$e = explode("select ",strtolower($query));
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$e2 = explode(" from ",$e[1]);
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$fields = $e2[0];
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*/
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if (preg_match('/^\s*SELECT/i', $query)) {
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if ( ! preg_match('/\sFROM\s/i', $query)) {
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$query .= " FROM dual";
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}
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if ($limit > 0) {
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// taken from http://svn.ez.no/svn/ezcomponents/packages/Database
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$max = $offset + $limit;
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if ($offset > 0) {
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$min = $offset + 1;
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$query = 'SELECT * FROM (SELECT a.*, ROWNUM dctrn_rownum FROM (' . $query
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. ') a WHERE ROWNUM <= ' . $max . ') WHERE dctrn_rownum >= ' . $min;
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} else {
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$query = 'SELECT a.* FROM (' . $query .') a WHERE ROWNUM <= ' . $max;
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}
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}
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}
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return $query;
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}
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/**
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* returns the next value in the given sequence
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*
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* @param string $sequence name of the sequence
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* @throws PDOException if something went wrong at database level
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* @return integer
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*/
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public function nextId($sequence)
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{
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return $this->fetchOne('SELECT ' . $sequence . '.nextval FROM dual');
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}
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/**
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* Returns the current id of a sequence
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*
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* @param string $sequence name of the sequence
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* @throws PDOException if something went wrong at database level
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* @return mixed id
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*/
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public function currId($sequence)
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{
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$sequence = $this->quoteIdentifier($this->getSequenceName($sequence), true);
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return $this->fetchOne('SELECT ' . $sequence . '.currval FROM dual');
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}
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}
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