125 lines
4.8 KiB
PHP
125 lines
4.8 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_Sequence');
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/**
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* Doctrine_Sequence_Mssql
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*
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* @package Doctrine
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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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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*/
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class Doctrine_Sequence_Mssql extends Doctrine_Sequence
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{
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/**
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* Returns the next free id of a sequence
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*
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* @param string $seqName name of the sequence
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* @param bool when true missing sequences are automatic created
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*
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* @return integer next id in the given sequence
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*/
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public function nextID($seqName, $ondemand = true)
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{
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$sequenceName = $this->conn->quoteIdentifier($this->getSequenceName($seqName), true);
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$seqcolName = $this->conn->quoteIdentifier($this->getAttribute(Doctrine::ATTR_SEQCOL_NAME), true);
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$this->expectError(MDB2_ERROR_NOSUCHTABLE);
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if ($this->_checkSequence($sequence_name)) {
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$query = "SET IDENTITY_INSERT $sequence_name ON ".
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"INSERT INTO $sequence_name ($seqcol_name) VALUES (0)";
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} else {
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$query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (0)";
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}
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$result =& $this->_doQuery($query, true);
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$this->popExpect();
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if (PEAR::isError($result)) {
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if ($ondemand && !$this->_checkSequence($sequence_name)) {
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$this->loadModule('Manager', null, true);
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// Since we are creating the sequence on demand
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// we know the first id = 1 so initialize the
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// sequence at 2
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$result = $this->manager->createSequence($seq_name, 2);
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if (PEAR::isError($result)) {
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return $this->raiseError($result, null, null,
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'nextID: on demand sequence '.$seq_name.' could not be created');
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} else {
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// First ID of a newly created sequence is 1
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return 1;
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}
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}
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return $result;
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}
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$value = $this->lastInsertID($sequenceName);
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if (is_numeric($value)) {
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$query = 'DELETE FROM ' . $sequenceName . ' WHERE ' . $seqcolName . ' < ' . $value;
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$this->conn->exec($query);
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/**
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TODO: is the following needed ?
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if (PEAR::isError($result)) {
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$this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
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}
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*/
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}
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return $value;
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}
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/**
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* Returns the autoincrement ID if supported or $id or fetches the current
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* ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
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*
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* @param string name of the table into which a new row was inserted
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* @param string name of the field into which a new row was inserted
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*/
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public function lastInsertID($table = null, $field = null)
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{
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$server_info = $this->getServerVersion();
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if (is_array($server_info)
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&& ! is_null($server_info['major'])
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&& $server_info['major'] >= 8) {
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$query = "SELECT SCOPE_IDENTITY()";
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} else {
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$query = "SELECT @@IDENTITY";
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}
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return $this->fetchOne($query, 'integer');
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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 $seqName name of the sequence
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*
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* @return integer current id in the given sequence
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*/
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public function currID($seqName)
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{
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$this->warnings[] = 'database does not support getting current
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sequence value, the sequence value was incremented';
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return $this->nextID($seqName);
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}
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}
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