1: <?php
 2: 
 3: /**
 4:  *
 5:  * An interface that contains the methods for a cache implementation for storing business
 6:  * objects and other less complex values.
 7:  * 
 8:  * @package alpha::util::cache
 9:  * @since 1.1
10:  * @author John Collins <dev@alphaframework.org>
11:  * @version $Id: AlphaCacheProviderInterface.inc 1496 2012-02-12 20:32:21Z alphadev $
12:  * @license http://www.opensource.org/licenses/bsd-license.php The BSD License
13:  * @copyright Copyright (c) 2012, John Collins (founder of Alpha Framework).  
14:  * All rights reserved.
15:  * 
16:  * <pre>
17:  * Redistribution and use in source and binary forms, with or 
18:  * without modification, are permitted provided that the 
19:  * following conditions are met:
20:  * 
21:  * * Redistributions of source code must retain the above 
22:  *   copyright notice, this list of conditions and the 
23:  *   following disclaimer.
24:  * * Redistributions in binary form must reproduce the above 
25:  *   copyright notice, this list of conditions and the 
26:  *   following disclaimer in the documentation and/or other 
27:  *   materials provided with the distribution.
28:  * * Neither the name of the Alpha Framework nor the names 
29:  *   of its contributors may be used to endorse or promote 
30:  *   products derived from this software without specific 
31:  *   prior written permission.
32:  *   
33:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
34:  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
35:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
36:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
37:  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
38:  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
39:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
40:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
41:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
42:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
43:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
44:  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
45:  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46:  * </pre>
47:  *  
48:  */
49: interface AlphaCacheProviderInterface {
50:     /**
51:      * Attempt to get the value from the cache for the given $key.
52:      * 
53:      * @param $key
54:      * @since 1.1
55:      * @return mixed The expected value from the cache, boolean false otherwise
56:      */
57:     public function get($key);
58:     
59:     /**
60:      * Attempt to set the value in the cache for the given $key.  Old values on the same
61:      * key will be overwritten.
62:      * 
63:      * @param $key
64:      * @param $value
65:      * @param $expiry Optional, some cache implementations will support an expiry value in seconds.
66:      * @since 1.1
67:      */
68:     public function set($key, $value, $expiry=0);
69:     
70:     /**
71:      * Attempt to delete the value from the cache for the given $key.
72:      * 
73:      * @param $key
74:      * @since 1.1
75:      */
76:     public function delete($key);
77: }
78: 
79: ?>