SchemaDiff.php

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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 LGPL. For more information, see
 * <http://www.doctrine-project.org>.
 */
 
namespace Doctrine\DBAL\Schema;
 
use \Doctrine\DBAL\Platforms\AbstractPlatform;
 
class SchemaDiff
{
    public $newTables = array();
 
    public $changedTables = array();
 
    public $removedTables = array();
 
    public $newSequences = array();
 
    public $changedSequences = array();
 
    public $removedSequences = array();
 
    public $orphanedForeignKeys = array();
 
    public function __construct($newTables = array(), $changedTables = array(), $removedTables = array())
    {
        $this->newTables = $newTables;
        $this->changedTables = $changedTables;
        $this->removedTables = $removedTables;
    }
 
    public function toSaveSql(AbstractPlatform $platform)
    {
        return $this->_toSql($platform, true);
    }
 
    public function toSql(AbstractPlatform $platform)
    {
        return $this->_toSql($platform, false);
    }
 
    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[] = $platform->getDropSequenceSQL($sequence);
                $sql[] = $platform->getCreateSequenceSQL($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;
    }
}