441 lines
20 KiB
PHP
441 lines
20 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_Export');
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/**
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* Doctrine_Export_Oracle
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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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* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
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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_Export_Oracle extends Doctrine_Export {
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/**
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* create a new database
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*
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* @param object $db database object that is extended by this class
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* @param string $name name of the database that should be created
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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public function createDatabase($name) {
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if (!$db->options['emulate_database'])
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throw new Doctrine_Export_Oracle_Exception('database creation is only supported if the "emulate_database" option is enabled');
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$username = $db->options['database_name_prefix'].$name;
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$password = $db->dsn['password'] ? $db->dsn['password'] : $name;
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$tablespace = $db->options['default_tablespace']
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? ' DEFAULT TABLESPACE '.$db->options['default_tablespace'] : '';
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$query = 'CREATE USER '.$username.' IDENTIFIED BY '.$password.$tablespace;
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$result = $db->standaloneQuery($query, null, true);
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$query = 'GRANT CREATE SESSION, CREATE TABLE, UNLIMITED TABLESPACE, CREATE SEQUENCE, CREATE TRIGGER TO '.$username;
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$result = $db->standaloneQuery($query, null, true);
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if (PEAR::isError($result)) {
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$query = 'DROP USER '.$username.' CASCADE';
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$result2 = $db->standaloneQuery($query, null, true);
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if (PEAR::isError($result2)) {
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return $db->raiseError($result2, null, null,
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'could not setup the database user', __FUNCTION__);
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}
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return $result;
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}
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}
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/**
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* drop an existing database
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*
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* @param object $db database object that is extended by this class
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* @param string $name name of the database that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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public function dropDatabase($name) {
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if (!$db->options['emulate_database'])
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throw new Doctrine_Export_Oracle_Exception('database dropping is only supported if the
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"emulate_database" option is enabled');
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$username = $db->options['database_name_prefix'].$name;
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return $db->standaloneQuery('DROP USER '.$username.' CASCADE', null, true);
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}
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/**
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* add an autoincrement sequence + trigger
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*
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* @param string $name name of the PK field
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* @param string $table name of the table
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* @param string $start start value for the sequence
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access private
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*/
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public function _makeAutoincrement($name, $table, $start = 1) {
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$table = strtoupper($table);
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$index_name = $table . '_AI_PK';
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$definition = array(
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'primary' => true,
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'fields' => array($name => true),
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);
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$result = $db->manager->createConstraint($table, $index_name, $definition);
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if (PEAR::isError($result)) {
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return $db->raiseError($result, null, null,
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'primary key for autoincrement PK could not be created', __FUNCTION__);
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}
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if (is_null($start)) {
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$db->beginTransaction();
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$query = 'SELECT MAX(' . $db->quoteIdentifier($name, true) . ') FROM ' . $db->quoteIdentifier($table, true);
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$start = $this->db->queryOne($query, 'integer');
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if (PEAR::isError($start)) {
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return $start;
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}
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++$start;
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$result = $db->manager->createSequence($table, $start);
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$db->commit();
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} else {
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$result = $db->manager->createSequence($table, $start);
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}
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if (PEAR::isError($result)) {
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return $db->raiseError($result, null, null,
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'sequence for autoincrement PK could not be created', __FUNCTION__);
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}
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$sequence_name = $db->getSequenceName($table);
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$trigger_name = $db->quoteIdentifier($table . '_AI_PK', true);
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$table = $db->quoteIdentifier($table, true);
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$name = $db->quoteIdentifier($name, true);
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$trigger_sql = '
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CREATE TRIGGER '.$trigger_name.'
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BEFORE INSERT
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ON '.$table.'
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FOR EACH ROW
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DECLARE
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last_Sequence NUMBER;
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last_InsertID NUMBER;
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BEGIN
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SELECT '.$sequence_name.'.NEXTVAL INTO :NEW.'.$name.' FROM DUAL;
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IF (:NEW.'.$name.' IS NULL OR :NEW.'.$name.' = 0) THEN
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SELECT '.$sequence_name.'.NEXTVAL INTO :NEW.'.$name.' FROM DUAL;
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ELSE
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SELECT NVL(Last_Number, 0) INTO last_Sequence
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FROM User_Sequences
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WHERE UPPER(Sequence_Name) = UPPER(\''.$sequence_name.'\');
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SELECT :NEW.id INTO last_InsertID FROM DUAL;
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WHILE (last_InsertID > last_Sequence) LOOP
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SELECT '.$sequence_name.'.NEXTVAL INTO last_Sequence FROM DUAL;
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END LOOP;
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END IF;
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END;
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';
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return $db->exec($trigger_sql);
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}
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/**
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* drop an existing autoincrement sequence + trigger
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*
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* @param string $table name of the table
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access private
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*/
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public function _dropAutoincrement($table) {
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$table = strtoupper($table);
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$trigger_name = $table . '_AI_PK';
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$trigger_name_quoted = $db->quote($trigger_name, 'text');
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$query = 'SELECT trigger_name FROM user_triggers';
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$query.= ' WHERE trigger_name='.$trigger_name_quoted.' OR trigger_name='.strtoupper($trigger_name_quoted);
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$trigger = $db->queryOne($query);
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if ($trigger) {
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$trigger_name = $db->quoteIdentifier($table . '_AI_PK', true);
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$trigger_sql = 'DROP TRIGGER ' . $trigger_name;
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$result = $db->exec($trigger_sql);
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if (PEAR::isError($result)) {
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return $db->raiseError($result, null, null,
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'trigger for autoincrement PK could not be dropped', __FUNCTION__);
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}
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$result = $db->manager->dropSequence($table);
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if (PEAR::isError($result)) {
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return $db->raiseError($result, null, null,
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'sequence for autoincrement PK could not be dropped', __FUNCTION__);
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}
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$index_name = $table . '_AI_PK';
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$result = $db->manager->dropConstraint($table, $index_name);
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if (PEAR::isError($result)) {
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return $db->raiseError($result, null, null,
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'primary key for autoincrement PK could not be dropped', __FUNCTION__);
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}
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}
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return MDB2_OK;
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}
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/**
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* create a new table
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*
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* @param string $name Name of the database that should be created
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* @param array $fields Associative array that contains the definition of each field of the new table
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* The indexes of the array entries are the names of the fields of the table an
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* the array entry values are associative arrays like those that are meant to be
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* passed with the field definitions to get[Type]Declaration() functions.
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*
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* Example
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* array(
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*
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* 'id' => array(
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* 'type' => 'integer',
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* 'unsigned' => 1
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* 'notnull' => 1
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* 'default' => 0
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* ),
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* 'name' => array(
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* 'type' => 'text',
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* 'length' => 12
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* ),
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* 'password' => array(
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* 'type' => 'text',
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* 'length' => 12
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* )
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* );
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* @param array $options An associative array of table options:
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*/
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public function createTable($name, $fields, $options = array()) {
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$db->beginNestedTransaction();
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$result = parent::createTable($name, $fields, $options);
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if (!PEAR::isError($result)) {
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foreach ($fields as $field_name => $field) {
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if (!empty($field['autoincrement'])) {
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$result = $this->_makeAutoincrement($field_name, $name);
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}
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}
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}
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$db->completeNestedTransaction();
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return $result;
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}
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/**
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* drop an existing table
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*
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* @param string $name name of the table that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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public function dropTable($name) {
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$db->beginNestedTransaction();
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$result = $this->_dropAutoincrement($name);
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if (!PEAR::isError($result)) {
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$result = parent::dropTable($name);
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}
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$db->completeNestedTransaction();
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return $result;
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}
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/**
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* alter an existing table
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*
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* @param string $name name of the table that is intended to be changed.
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* @param array $changes associative array that contains the details of each type
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* of change that is intended to be performed. The types of
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* changes that are currently supported are defined as follows:
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*
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* name
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*
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* New name for the table.
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*
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* add
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*
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* Associative array with the names of fields to be added as
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* indexes of the array. The value of each entry of the array
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* should be set to another associative array with the properties
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* of the fields to be added. The properties of the fields should
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* be the same as defined by the MDB2 parser.
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*
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*
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* remove
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*
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* Associative array with the names of fields to be removed as indexes
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* of the array. Currently the values assigned to each entry are ignored.
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* An empty array should be used for future compatibility.
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*
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* rename
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*
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* Associative array with the names of fields to be renamed as indexes
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* of the array. The value of each entry of the array should be set to
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* another associative array with the entry named name with the new
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* field name and the entry named Declaration that is expected to contain
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* the portion of the field declaration already in DBMS specific SQL code
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* as it is used in the CREATE TABLE statement.
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*
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* change
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*
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* Associative array with the names of the fields to be changed as indexes
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* of the array. Keep in mind that if it is intended to change either the
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* name of a field and any other properties, the change array entries
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* should have the new names of the fields as array indexes.
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*
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* The value of each entry of the array should be set to another associative
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* array with the properties of the fields to that are meant to be changed as
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* array entries. These entries should be assigned to the new values of the
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* respective properties. The properties of the fields should be the same
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* as defined by the MDB2 parser.
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*
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* Example
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* array(
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* 'name' => 'userlist',
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* 'add' => array(
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* 'quota' => array(
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* 'type' => 'integer',
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* 'unsigned' => 1
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* )
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* ),
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* 'remove' => array(
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* 'file_limit' => array(),
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* 'time_limit' => array()
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* ),
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* 'change' => array(
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* 'name' => array(
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* 'length' => '20',
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* 'definition' => array(
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* 'type' => 'text',
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* 'length' => 20,
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* ),
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* )
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* ),
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* 'rename' => array(
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* 'sex' => array(
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* 'name' => 'gender',
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* 'definition' => array(
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* 'type' => 'text',
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* 'length' => 1,
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* 'default' => 'M',
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* ),
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* )
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* )
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* )
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*
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* @param boolean $check indicates whether the function should just check if the DBMS driver
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* can perform the requested table alterations if the value is true or
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* actually perform them otherwise.
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* @return void
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*/
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public function alterTable($name, $changes, $check) {
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foreach ($changes as $change_name => $change) {
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switch ($change_name) {
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case 'add':
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case 'remove':
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case 'change':
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case 'name':
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case 'rename':
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break;
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default:
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return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
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'change type "'.$change_name.'" not yet supported', __FUNCTION__);
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}
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}
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if ($check) {
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return MDB2_OK;
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}
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$name = $db->quoteIdentifier($name, true);
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if (!empty($changes['add']) && is_array($changes['add'])) {
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$fields = array();
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foreach ($changes['add'] as $field_name => $field) {
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$fields[] = $db->getDeclaration($field['type'], $field_name, $field);
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}
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$result = $db->exec("ALTER TABLE $name ADD (". implode(', ', $fields).')');
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if (PEAR::isError($result)) {
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return $result;
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}
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}
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if (!empty($changes['change']) && is_array($changes['change'])) {
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$fields = array();
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foreach ($changes['change'] as $field_name => $field) {
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$fields[] = $field_name. ' ' . $db->getDeclaration($field['definition']['type'], '', $field['definition']);
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}
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$result = $db->exec("ALTER TABLE $name MODIFY (". implode(', ', $fields).')');
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if (PEAR::isError($result)) {
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return $result;
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}
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}
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if (!empty($changes['rename']) && is_array($changes['rename'])) {
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foreach ($changes['rename'] as $field_name => $field) {
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$field_name = $db->quoteIdentifier($field_name, true);
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$query = "ALTER TABLE $name RENAME COLUMN $field_name TO ".$db->quoteIdentifier($field['name']);
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$result = $db->exec($query);
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if (PEAR::isError($result)) {
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return $result;
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}
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}
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}
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if (!empty($changes['remove']) && is_array($changes['remove'])) {
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$fields = array();
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foreach ($changes['remove'] as $field_name => $field) {
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$fields[] = $db->quoteIdentifier($field_name, true);
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}
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$result = $db->exec("ALTER TABLE $name DROP COLUMN ". implode(', ', $fields));
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if (PEAR::isError($result)) {
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return $result;
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}
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}
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if (!empty($changes['name'])) {
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$change_name = $db->quoteIdentifier($changes['name'], true);
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$result = $db->exec("ALTER TABLE $name RENAME TO ".$change_name);
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if (PEAR::isError($result)) {
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return $result;
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}
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}
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}
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/**
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* create sequence
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*
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* @param object $db database object that is extended by this class
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* @param string $seq_name name of the sequence to be created
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* @param string $start start value of the sequence; default is 1
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* @return void
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*/
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public function createSequence($seq_name, $start = 1) {
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$sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
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$query = "CREATE SEQUENCE $sequence_name START WITH $start INCREMENT BY 1 NOCACHE";
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$query.= ($start < 1 ? " MINVALUE $start" : '');
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return $db->exec($query);
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}
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/**
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* drop existing sequence
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*
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* @param object $db database object that is extended by this class
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* @param string $seq_name name of the sequence to be dropped
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* @return void
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*/
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public function dropSequence($seq_name) {
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$sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
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return $db->exec("DROP SEQUENCE $sequence_name");
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}
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}
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