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Commit085ca60

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[Cache] Create NullAdapter to disable cache if needed
1 parentea9d6e7 commit085ca60

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2 files changed

+245
-0
lines changed

2 files changed

+245
-0
lines changed
Lines changed: 121 additions & 0 deletions
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespaceSymfony\Component\Cache\Adapter;
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usePsr\Cache\CacheItemInterface;
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useSymfony\Component\Cache\CacheItem;
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/**
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* @author Titouan Galopin <galopintitouan@gmail.com>
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*/
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class NullAdapterimplements AdapterInterface
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{
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private$createCacheItem;
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publicfunction__construct()
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{
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$this->createCacheItem = \Closure::bind(
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function ($key) {
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$item =newCacheItem();
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$item->key =$key;
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$item->isHit =false;
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return$item;
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},
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$this,
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CacheItem::class
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);
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctiongetItem($key)
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{
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$f =$this->createCacheItem;
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return$f($key);
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctiongetItems(array$keys =array())
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{
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return$this->generateItems($keys);
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctionhasItem($key)
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{
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returnfalse;
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctionclear()
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{
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returntrue;
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctiondeleteItem($key)
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{
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returntrue;
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctiondeleteItems(array$keys)
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{
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returntrue;
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctionsave(CacheItemInterface$item)
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{
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returnfalse;
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctionsaveDeferred(CacheItemInterface$item)
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{
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returnfalse;
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}
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/**
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* {@inheritdoc}
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*/
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publicfunctioncommit()
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{
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returnfalse;
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}
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privatefunctiongenerateItems(array$keys)
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{
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$f =$this->createCacheItem;
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foreach ($keysas$key) {
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yield$key =>$f($key);
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}
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}
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}
Lines changed: 124 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespaceSymfony\Component\Cache\Tests\Adapter;
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usePsr\Cache\CacheItemInterface;
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useSymfony\Component\Cache\Adapter\NullAdapter;
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class NullAdapterTestextends \PHPUnit_Framework_TestCase
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{
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publicfunctioncreateCachePool()
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{
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returnnewNullAdapter();
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}
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publicfunctiontestGetItem()
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{
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$adapter =$this->createCachePool();
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$item =$adapter->getItem('key');
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$this->assertFalse($item->isHit());
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$this->assertNull($item->get(),"Item's value must be null when isHit is false.");
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}
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publicfunctiontestHasItem()
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{
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$this->assertFalse($this->createCachePool()->hasItem('key'));
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}
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publicfunctiontestGetItems()
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{
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$adapter =$this->createCachePool();
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$keys =array('foo','bar','baz','biz');
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/** @var CacheItemInterface[] $items */
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$items =$adapter->getItems($keys);
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$count =0;
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foreach ($itemsas$key =>$item) {
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$itemKey =$item->getKey();
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$this->assertEquals($itemKey,$key,'Keys must be preserved when fetching multiple items');
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$this->assertTrue(in_array($key,$keys),'Cache key can not change.');
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$this->assertFalse($item->isHit());
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// Remove $key for $keys
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foreach ($keysas$k =>$v) {
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if ($v ===$key) {
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unset($keys[$k]);
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}
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}
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++$count;
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}
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$this->assertSame(4,$count);
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}
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publicfunctiontestIsHit()
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{
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$adapter =$this->createCachePool();
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$item =$adapter->getItem('key');
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$this->assertFalse($item->isHit());
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}
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publicfunctiontestClear()
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{
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$this->assertTrue($this->createCachePool()->clear());
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}
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publicfunctiontestDeleteItem()
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{
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$this->assertTrue($this->createCachePool()->deleteItem('key'));
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}
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publicfunctiontestDeleteItems()
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{
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$this->assertTrue($this->createCachePool()->deleteItems(array('key','foo','bar')));
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}
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publicfunctiontestSave()
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{
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$adapter =$this->createCachePool();
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$item =$adapter->getItem('key');
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$this->assertFalse($item->isHit());
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$this->assertNull($item->get(),"Item's value must be null when isHit is false.");
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$this->assertFalse($adapter->save($item));
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}
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publicfunctiontestDeferredSave()
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{
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$adapter =$this->createCachePool();
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$item =$adapter->getItem('key');
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$this->assertFalse($item->isHit());
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$this->assertNull($item->get(),"Item's value must be null when isHit is false.");
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$this->assertFalse($adapter->saveDeferred($item));
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}
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publicfunctiontestCommit()
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{
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$adapter =$this->createCachePool();
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$item =$adapter->getItem('key');
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$this->assertFalse($item->isHit());
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$this->assertNull($item->get(),"Item's value must be null when isHit is false.");
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$this->assertFalse($adapter->saveDeferred($item));
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$this->assertFalse($this->createCachePool()->commit());
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}
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}

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