/usr/share/php/PHP/Depend/Metrics/AbstractCachingAnalyzer.php is in pdepend 1.1.4-1.
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/**
* This file is part of PHP_Depend.
*
* PHP Version 5
*
* Copyright (c) 2008-2012, Manuel Pichler <mapi@pdepend.org>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Manuel Pichler nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*
* @category QualityAssurance
* @package PHP_Depend
* @subpackage Metrics
* @author Manuel Pichler <mapi@pdepend.org>
* @copyright 2008-2012 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version SVN: $Id$
* @link http://pdepend.org/
* @since 1.0.0
*/
/**
* This abstract class provides an analyzer that provides the basic infrastructure
* for caching.
*
* @category QualityAssurance
* @package PHP_Depend
* @subpackage Metrics
* @author Manuel Pichler <mapi@pdepend.org>
* @copyright 2008-2012 Manuel Pichler. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version Release: 1.1.4
* @link http://pdepend.org/
* @since 1.0.0
*/
abstract class PHP_Depend_Metrics_AbstractCachingAnalyzer
extends PHP_Depend_Metrics_AbstractAnalyzer
implements PHP_Depend_Metrics_CacheAware
{
/**
* Collected node metrics
*
* @var array
*/
protected $metrics = null;
/**
* Metrics restored from the cache. This property is only used temporary.
*
* @var array
*/
private $metricsCached = array();
/**
* Injected cache driver.
*
* @var PHP_Depend_Util_Cache_Driver
*/
private $cache;
/**
* Setter method for the system wide used cache.
*
* @param PHP_Depend_Util_Cache_Driver $cache Used cache object.
*
* @return void
*/
public function setCache(PHP_Depend_Util_Cache_Driver $cache)
{
$this->cache = $cache;
}
/**
* Tries to restore the metrics for a cached node. If this method has
* restored the metrics it will return <b>TRUE</b>, otherwise the return
* value will be <b>FALSE</b>.
*
* @param PHP_Depend_Code_NodeI $node The context node instance.
*
* @return boolean
*/
protected function restoreFromCache(PHP_Depend_Code_NodeI $node)
{
$uuid = $node->getUuid();
if ($node->isCached() && isset($this->metricsCached[$uuid])) {
$this->metrics[$uuid] = $this->metricsCached[$uuid];
return true;
}
return false;
}
/**
* Initializes the previously calculated metrics from the cache.
*
* @return void
*/
protected function loadCache()
{
$this->metricsCached = (array) $this->cache
->type('metrics')
->restore(get_class($this));
}
/**
* Unloads the metrics cache and stores the current set of metrics in the
* cache.
*
* @return void
*/
protected function unloadCache()
{
$this->cache
->type('metrics')
->store(get_class($this), $this->metrics);
$this->metricsCached = array();
}
}
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