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<?php
/*
* 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 MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\DBAL\Schema;
use \Doctrine\DBAL\Platforms\AbstractPlatform;
/**
* Schema Diff.
*
* @link www.doctrine-project.org
* @copyright Copyright (C) 2005-2009 eZ Systems AS. All rights reserved.
* @license http://ez.no/licenses/new_bsd New BSD License
* @since 2.0
* @author Benjamin Eberlei <kontakt@beberlei.de>
*/
class SchemaDiff
{
/**
* @var \Doctrine\DBAL\Schema\Schema
*/
public $fromSchema;
/**
* All added tables.
*
* @var \Doctrine\DBAL\Schema\Table[]
*/
public $newTables = array();
/**
* All changed tables.
*
* @var \Doctrine\DBAL\Schema\TableDiff[]
*/
public $changedTables = array();
/**
* All removed tables.
*
* @var \Doctrine\DBAL\Schema\Table[]
*/
public $removedTables = array();
/**
* @var \Doctrine\DBAL\Schema\Sequence[]
*/
public $newSequences = array();
/**
* @var \Doctrine\DBAL\Schema\Sequence[]
*/
public $changedSequences = array();
/**
* @var \Doctrine\DBAL\Schema\Sequence[]
*/
public $removedSequences = array();
/**
* @var \Doctrine\DBAL\Schema\ForeignKeyConstraint[]
*/
public $orphanedForeignKeys = array();
/**
* Constructs an SchemaDiff object.
*
* @param \Doctrine\DBAL\Schema\Table[] $newTables
* @param \Doctrine\DBAL\Schema\TableDiff[] $changedTables
* @param \Doctrine\DBAL\Schema\Table[] $removedTables
* @param \Doctrine\DBAL\Schema\Schema|null $fromSchema
*/
public function __construct($newTables = array(), $changedTables = array(), $removedTables = array(), Schema $fromSchema = null)
{
$this->newTables = $newTables;
$this->changedTables = $changedTables;
$this->removedTables = $removedTables;
$this->fromSchema = $fromSchema;
}
/**
* The to save sql mode ensures that the following things don't happen:
*
* 1. Tables are deleted
* 2. Sequences are deleted
* 3. Foreign Keys which reference tables that would otherwise be deleted.
*
* This way it is ensured that assets are deleted which might not be relevant to the metadata schema at all.
*
* @param \Doctrine\DBAL\Platforms\AbstractPlatform $platform
*
* @return array
*/
public function toSaveSql(AbstractPlatform $platform)
{
return $this->_toSql($platform, true);
}
/**
* @param \Doctrine\DBAL\Platforms\AbstractPlatform $platform
*
* @return array
*/
public function toSql(AbstractPlatform $platform)
{
return $this->_toSql($platform, false);
}
/**
* @param \Doctrine\DBAL\Platforms\AbstractPlatform $platform
* @param boolean $saveMode
*
* @return array
*/
protected function _toSql(AbstractPlatform $platform, $saveMode = false)
{
$sql = array();
if ($platform->supportsForeignKeyConstraints() && $saveMode == false) {
foreach ($this->orphanedForeignKeys as $orphanedForeignKey) {
$sql[] = $platform->getDropForeignKeySQL($orphanedForeignKey, $orphanedForeignKey->getLocalTableName());
}
}
if ($platform->supportsSequences() == true) {
foreach ($this->changedSequences as $sequence) {
$sql[] = $platform->getAlterSequenceSQL($sequence);
}
if ($saveMode === false) {
foreach ($this->removedSequences as $sequence) {
$sql[] = $platform->getDropSequenceSQL($sequence);
}
}
foreach ($this->newSequences as $sequence) {
$sql[] = $platform->getCreateSequenceSQL($sequence);
}
}
$foreignKeySql = array();
foreach ($this->newTables as $table) {
$sql = array_merge(
$sql,
$platform->getCreateTableSQL($table, AbstractPlatform::CREATE_INDEXES)
);
if ($platform->supportsForeignKeyConstraints()) {
foreach ($table->getForeignKeys() as $foreignKey) {
$foreignKeySql[] = $platform->getCreateForeignKeySQL($foreignKey, $table);
}
}
}
$sql = array_merge($sql, $foreignKeySql);
if ($saveMode === false) {
foreach ($this->removedTables as $table) {
$sql[] = $platform->getDropTableSQL($table);
}
}
foreach ($this->changedTables as $tableDiff) {
$sql = array_merge($sql, $platform->getAlterTableSQL($tableDiff));
}
return $sql;
}
}
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