3 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
4 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
5 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
6 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
7 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
8 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
9 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
10 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
11 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
12 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
13 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
15 * This software consists of voluntary contributions made by many individuals
16 * and is licensed under the MIT license. For more information, see
17 * <http://www.doctrine-project.org>.
20 namespace Doctrine\Common\Cache;
23 * Cache provider that allows to easily chain multiple cache providers
25 * @author Michaƫl Gallego <mic.gallego@gmail.com>
27 class ChainCache extends CacheProvider
30 * @var CacheProvider[]
32 private $cacheProviders = array();
37 * @param CacheProvider[] $cacheProviders
39 public function __construct($cacheProviders = array())
41 $this->cacheProviders = $cacheProviders;
47 public function setNamespace($namespace)
49 parent::setNamespace($namespace);
51 foreach ($this->cacheProviders as $cacheProvider) {
52 $cacheProvider->setNamespace($namespace);
59 protected function doFetch($id)
61 foreach ($this->cacheProviders as $key => $cacheProvider) {
62 if ($cacheProvider->doContains($id)) {
63 $value = $cacheProvider->doFetch($id);
65 // We populate all the previous cache layers (that are assumed to be faster)
66 for ($subKey = $key - 1 ; $subKey >= 0 ; $subKey--) {
67 $this->cacheProviders[$subKey]->doSave($id, $value);
80 protected function doContains($id)
82 foreach ($this->cacheProviders as $cacheProvider) {
83 if ($cacheProvider->doContains($id)) {
94 protected function doSave($id, $data, $lifeTime = 0)
98 foreach ($this->cacheProviders as $cacheProvider) {
99 $stored = $cacheProvider->doSave($id, $data, $lifeTime) && $stored;
108 protected function doDelete($id)
112 foreach ($this->cacheProviders as $cacheProvider) {
113 $deleted = $cacheProvider->doDelete($id) && $deleted;
122 protected function doFlush()
126 foreach ($this->cacheProviders as $cacheProvider) {
127 $flushed = $cacheProvider->doFlush() && $flushed;
136 protected function doGetStats()
138 // We return all the stats from all adapters
141 foreach ($this->cacheProviders as $cacheProvider) {
142 $stats[] = $cacheProvider->doGetStats();