1
0
mirror of synced 2024-12-16 08:06:02 +03:00
doctrine2/lib/Doctrine/DBAL/Schema/AbstractAsset.php
2009-12-10 22:39:28 +00:00

85 lines
2.8 KiB
PHP

<?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;
/**
* The abstract asset allows to reset the name of all assets without publishing this to the public userland.
*
* This encapsulation hack is necessary to keep a consistent state of the database schema. Say we have a list of tables
* array($tableName => Table($tableName)); if you want to rename the table, you have to make sure
*
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 2.0
* @version $Revision$
* @author Benjamin Eberlei <kontakt@beberlei.de>
*/
abstract class AbstractAsset
{
/**
* @var string
*/
protected $_name;
/**
* Set name of this asset
*
* @param string $name
*/
protected function _setName($name)
{
$this->_name = $name;
}
/**
* Return name of this schema asset.
*
* @return string
*/
public function getName()
{
return $this->_name;
}
/**
* Generate an identifier from a list of column names obeying a certain string length.
*
* This is especially important for Oracle, since it does not allow identifiers larger than 30 chars,
* however building idents automatically for foreign keys, composite keys or such can easily create
* very long names.
*
* @param array $columnNames
* @param string $postfix
* @param int $maxSize
* @return string
*/
protected function _generateIdentifierName($columnNames, $postfix='', $maxSize=30)
{
$columnCount = count($columnNames);
$postfixLen = strlen($postfix);
$parts = array_map(function($columnName) use($columnCount, $postfixLen, $maxSize) {
return substr($columnName, -floor(($maxSize-$postfixLen)/$columnCount - 1));
}, $columnNames);
$parts[] = $postfix;
return trim(implode("_", $parts), '_');
}
}