85 lines
2.8 KiB
PHP
85 lines
2.8 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\DBAL\Schema;
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/**
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* The abstract asset allows to reset the name of all assets without publishing this to the public userland.
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*
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* This encapsulation hack is necessary to keep a consistent state of the database schema. Say we have a list of tables
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* array($tableName => Table($tableName)); if you want to rename the table, you have to make sure
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*
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.doctrine-project.org
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* @since 2.0
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* @version $Revision$
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* @author Benjamin Eberlei <kontakt@beberlei.de>
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*/
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abstract class AbstractAsset
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{
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/**
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* @var string
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*/
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protected $_name;
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/**
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* Set name of this asset
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*
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* @param string $name
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*/
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protected function _setName($name)
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{
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$this->_name = $name;
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}
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/**
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* Return name of this schema asset.
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*
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* @return string
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*/
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public function getName()
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{
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return $this->_name;
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}
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/**
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* Generate an identifier from a list of column names obeying a certain string length.
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*
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* This is especially important for Oracle, since it does not allow identifiers larger than 30 chars,
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* however building idents automatically for foreign keys, composite keys or such can easily create
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* very long names.
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*
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* @param array $columnNames
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* @param string $postfix
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* @param int $maxSize
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* @return string
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*/
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protected function _generateIdentifierName($columnNames, $postfix='', $maxSize=30)
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{
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$columnCount = count($columnNames);
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$postfixLen = strlen($postfix);
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$parts = array_map(function($columnName) use($columnCount, $postfixLen, $maxSize) {
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return substr($columnName, -floor(($maxSize-$postfixLen)/$columnCount - 1));
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}, $columnNames);
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$parts[] = $postfix;
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return trim(implode("_", $parts), '_');
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}
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} |