<?php /* * $Id$ * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * This software consists of voluntary contributions made by many individuals * and is licensed under the LGPL. For more information, see * <http://www.phpdoctrine.com>. */ Doctrine::autoload('Doctrine_Sequence'); /** * Doctrine_Sequence_Firebird * * @package Doctrine * @author Konsta Vesterinen <kvesteri@cc.hut.fi> * @license http://www.opensource.org/licenses/lgpl-license.php LGPL * @category Object Relational Mapping * @link www.phpdoctrine.com * @since 1.0 * @version $Revision$ */ class Doctrine_Sequence_Firebird extends Doctrine_Sequence { /** * Returns the next free id of a sequence * * @param string $seqName name of the sequence * @param bool when true missing sequences are automatic created * * @return integer next id in the given sequence */ public function nextID($seqName, $onDemand = true) { $sequenceName = $this->conn->quoteIdentifier($this->getSequenceName($seqName), true); $query = 'SELECT GEN_ID(' . $sequenceName . ', 1) as the_value FROM RDB$DATABASE'; try { $result = $this->queryOne($query, 'integer'); } catch(Doctrine_Connection_Exception $e) { if ($onDemand && $e->getPortableCode() == Doctrine::ERR_NOSUCHTABLE) { // Since we are creating the sequence on demand // we know the first id = 1 so initialize the // sequence at 2 try { $result = $this->conn->export->createSequence($seqName, 2); } catch(Doctrine_Exception $e) { throw new Doctrine_Sequence_Exception('on demand sequence ' . $seqName . ' could not be created'); } // First ID of a newly created sequence is 1 // return 1; // BUT generators are not always reset, so return the actual value return $this->currID($seqName); } throw $e; } return $result; } /** * Returns the autoincrement ID if supported or $id or fetches the current * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field) * * @param string name of the table into which a new row was inserted * @param string name of the field into which a new row was inserted */ public function lastInsertID($table = null, $field = null) { throw new Doctrine_Sequence_Exception('method not implemented'); } /** * Returns the current id of a sequence * * @param string $seqName name of the sequence * * @return integer current id in the given sequence */ public function currID($seqName) { $sequenceName = $this->conn->quoteIdentifier($this->getSequenceName($seqName), true); $query = 'SELECT GEN_ID(' . $sequence_name . ', 0) as the_value FROM RDB$DATABASE'; try { $value = $this->queryOne($query); } catch(Doctrine_Connection_Exception $e) { throw new Doctrine_Sequence_Exception('Unable to select from ' . $seqName); } if ( ! is_numeric($value)) { throw new Doctrine_Sequence_Exception('could not find value in sequence table'); } return $value; } }