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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 MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\DBAL\Platforms\Keywords;
/**
* Abstract interface for a SQL reserved keyword dictionary.
*
* @link www.doctrine-project.org
* @since 2.0
* @author Benjamin Eberlei <kontakt@beberlei.de>
*/
abstract class KeywordList
{
/**
* @var array|null
*/
private $keywords = null;
/**
* Checks if the given word is a keyword of this dialect/vendor platform.
*
* @param string $word
*
* @return boolean
*/
public function isKeyword($word)
{
if ($this->keywords === null) {
$this->initializeKeywords();
}
return isset($this->keywords[strtoupper($word)]);
}
/**
* @return void
*/
protected function initializeKeywords()
{
$this->keywords = array_flip(array_map('strtoupper', $this->getKeywords()));
}
/**
* Returns the list of keywords.
*
* @return array
*/
abstract protected function getKeywords();
/**
* Returns the name of this keyword list.
*
* @return string
*/
abstract public function getName();
}
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