DropSchemaSqlCollector.php

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<?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.doctrine-project.org>.
 */
 
namespace Doctrine\DBAL\Schema\Visitor;
 
use Doctrine\DBAL\Platforms\AbstractPlatform,
    Doctrine\DBAL\Schema\Table,
    Doctrine\DBAL\Schema\Schema,
    Doctrine\DBAL\Schema\Column,
    Doctrine\DBAL\Schema\ForeignKeyConstraint,
    Doctrine\DBAL\Schema\Constraint,
    Doctrine\DBAL\Schema\Sequence,
    Doctrine\DBAL\Schema\Index;
 
class DropSchemaSqlCollector implements Visitor
{
    private $_constraints = array();
    
    private $_sequences = array();
 
    private $_tables = array();
 
    private $_platform = null;
 
    public function __construct(AbstractPlatform $platform)
    {
        $this->_platform = $platform;
    }
 
    public function acceptSchema(Schema $schema)
    {
        
    }
 
    public function acceptTable(Table $table)
    {
        $this->_tables[] = $this->_platform->getDropTableSQL($table->getQuotedName($this->_platform));
    }
 
    public function acceptColumn(Table $table, Column $column)
    {
        
    }
 
    public function acceptForeignKey(Table $localTable, ForeignKeyConstraint $fkConstraint)
    {
        if (strlen($fkConstraint->getName()) == 0) {
            throw SchemaException::namedForeignKeyRequired($localTable, $fkConstraint);
        }
 
        $this->_constraints[] = $this->_platform->getDropForeignKeySQL($fkConstraint->getQuotedName($this->_platform), $localTable->getQuotedName($this->_platform));
    }
 
    public function acceptIndex(Table $table, Index $index)
    {
        
    }
 
    public function acceptSequence(Sequence $sequence)
    {
        $this->_sequences[] = $this->_platform->getDropSequenceSQL($sequence->getQuotedName($this->_platform));
    }
 
    public function clearQueries()
    {
        $this->_constraints = $this->_sequences = $this->_tables = array();
    }
 
    public function getQueries()
    {
        return array_merge($this->_constraints, $this->_tables, $this->_sequences);
    }
}