SQLServer2012Platform.php 3.2 KB
<?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
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * 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\Platforms;

use Doctrine\DBAL\Schema\Sequence;

/**
 * Platform to ensure compatibility of Doctrine with Microsoft SQL Server 2012 version.
 *
 * Differences to SQL Server 2008 and before are that sequences are introduced.
 *
 * @author Steve Müller <st.mueller@dzh-online.de>
 */
class SQLServer2012Platform extends SQLServer2008Platform
{
    /**
     * {@inheritdoc}
     */
    public function getAlterSequenceSQL(Sequence $sequence)
    {
        return 'ALTER SEQUENCE ' . $sequence->getQuotedName($this) .
               ' INCREMENT BY ' . $sequence->getAllocationSize();
    }

    /**
     * {@inheritdoc}
     */
    public function getCreateSequenceSQL(Sequence $sequence)
    {
        return 'CREATE SEQUENCE ' . $sequence->getQuotedName($this) .
               ' START WITH ' . $sequence->getInitialValue() .
               ' INCREMENT BY ' . $sequence->getAllocationSize() .
               ' MINVALUE ' . $sequence->getInitialValue();
    }

    /**
     * {@inheritdoc}
     */
    public function getDropSequenceSQL($sequence)
    {
        if ($sequence instanceof Sequence) {
            $sequence = $sequence->getQuotedName($this);
        }

        return 'DROP SEQUENCE ' . $sequence;
    }

    /**
     * {@inheritdoc}
     */
    public function getListSequencesSQL($database)
    {
        return 'SELECT seq.name,
                       CAST(
                           seq.increment AS VARCHAR(MAX)
                       ) AS increment, -- CAST avoids driver error for sql_variant type
                       CAST(
                           seq.start_value AS VARCHAR(MAX)
                       ) AS start_value -- CAST avoids driver error for sql_variant type
                FROM   sys.sequences AS seq';
    }

    /**
     * {@inheritdoc}
     */
    public function getSequenceNextValSQL($sequenceName)
    {
        return 'SELECT NEXT VALUE FOR ' . $sequenceName;
    }

    /**
     * {@inheritdoc}
     */
    public function supportsSequences()
    {
        return true;
    }

    /**
     * {@inheritdoc}
     *
     * Returns Microsoft SQL Server 2012 specific keywords class
     */
    protected function getReservedKeywordsClass()
    {
        return 'Doctrine\DBAL\Platforms\Keywords\SQLServer2012Keywords';
    }
}