2007-02-17 13:00:04 +03:00
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<?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_Pgsql
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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_Pgsql extends Doctrine_Export
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{
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/**
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* create a new database
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*
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* @param string $name name of the database that should be created
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* @throws PDOException
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* @return void
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*/
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public function createDatabase($name)
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{
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$query = 'CREATE DATABASE ' . $this->conn->quoteIdentifier($name);
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$this->conn->exec($query);
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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 string $name name of the database that should be dropped
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* @throws PDOException
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* @access public
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*/
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public function dropDatabase($name)
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{
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$query = 'DROP DATABASE ' . $this->conn->quoteIdentifier($name);
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$this->conn->exec($query);
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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 Metabase 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 Metabase 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 $check indicates whether the function should just check if the DBMS driver
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* can perform the requested table alterations if the value is true or
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* actually perform them otherwise.
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* @throws PDOException
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* @return boolean
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*/
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public function alterTable($name, array $changes, $check)
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{
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foreach ($changes as $changeName => $change) {
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switch ($changeName) {
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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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throw new Doctrine_Export_Exception('change type "' . $changeName . '\" not yet supported');
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}
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}
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if ($check) {
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return true;
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}
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if (isset($changes['add']) && is_array($changes['add'])) {
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foreach ($changes['add'] as $field_name => $field) {
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$query = 'ADD ' . $this->conn->getDeclaration($field['type'], $field_name, $field);
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$this->conn->exec('ALTER TABLE ' . $name . ' ' . $query);
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}
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}
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if (isset($changes['remove']) && is_array($changes['remove'])) {
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foreach ($changes['remove'] as $field_name => $field) {
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$field_name = $this->conn->quoteIdentifier($field_name, true);
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$query = 'DROP ' . $field_name;
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$this->conn->exec('ALTER TABLE ' . $name . ' ' . $query);
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}
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}
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if (isset($changes['change']) && is_array($changes['change'])) {
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foreach ($changes['change'] as $field_name => $field) {
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$fieldName = $this->conn->quoteIdentifier($field_name, true);
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if (isset($field['type'])) {
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$server_info = $this->conn->getServerVersion();
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if (is_array($server_info) && $server_info['major'] < 8) {
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throw new Doctrine_Export_Exception('changing column type for "'.$field['type'].'\" requires PostgreSQL 8.0 or above');
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}
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$query = "ALTER $field_name TYPE ".$this->conn->datatype->getTypeDeclaration($field['definition']);
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$this->conn->exec('ALTER TABLE ' . $name . ' ' . $query);;
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}
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if (array_key_exists('default', $field)) {
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$query = "ALTER $field_name SET DEFAULT ".$this->conn->quote($field['definition']['default'], $field['definition']['type']);
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$this->conn->exec('ALTER TABLE ' . $name . ' ' . $query);
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}
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if (!empty($field['notnull'])) {
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$query = "ALTER $field_name ".($field['definition']['notnull'] ? "SET" : "DROP").' NOT NULL';
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$this->conn->exec('ALTER TABLE ' . $name . ' ' . $query);
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}
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}
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}
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if (isset($changes['rename']) && is_array($changes['rename'])) {
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foreach ($changes['rename'] as $fieldName => $field) {
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$field_name = $this->conn->quoteIdentifier($fieldName, true);
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$this->conn->exec('ALTER TABLE ' . $name . ' RENAME COLUMN ' . $fieldName . ' TO ' . $this->conn->quoteIdentifier($field['name'], true));
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}
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}
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$name = $this->conn->quoteIdentifier($name, true);
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if (isset($changes['name'])) {
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$changeName = $this->conn->quoteIdentifier($changes['name'], true);
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$this->conn->exec('ALTER TABLE ' . $name . ' RENAME TO ' . $changeName);
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}
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}
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}
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