Source Code Cross Referenced for Cache.java in  » Library » jakarta-oro-2.0.8 » org » apache » oro » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Library » jakarta oro 2.0.8 » org.apache.oro.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         * $Id: Cache.java,v 1.7 2003/11/07 20:16:25 dfs Exp $
03:         *
04:         * ====================================================================
05:         * The Apache Software License, Version 1.1
06:         *
07:         * Copyright (c) 2000 The Apache Software Foundation.  All rights
08:         * reserved.
09:         *
10:         * Redistribution and use in source and binary forms, with or without
11:         * modification, are permitted provided that the following conditions
12:         * are met:
13:         *
14:         * 1. Redistributions of source code must retain the above copyright
15:         *    notice, this list of conditions and the following disclaimer.
16:         *
17:         * 2. Redistributions in binary form must reproduce the above copyright
18:         *    notice, this list of conditions and the following disclaimer in
19:         *    the documentation and/or other materials provided with the
20:         *    distribution.
21:         *
22:         * 3. The end-user documentation included with the redistribution,
23:         *    if any, must include the following acknowledgment:
24:         *       "This product includes software developed by the
25:         *        Apache Software Foundation (http://www.apache.org/)."
26:         *    Alternately, this acknowledgment may appear in the software itself,
27:         *    if and wherever such third-party acknowledgments normally appear.
28:         *
29:         * 4. The names "Apache" and "Apache Software Foundation", "Jakarta-Oro" 
30:         *    must not be used to endorse or promote products derived from this
31:         *    software without prior written permission. For written
32:         *    permission, please contact apache@apache.org.
33:         *
34:         * 5. Products derived from this software may not be called "Apache" 
35:         *    or "Jakarta-Oro", nor may "Apache" or "Jakarta-Oro" appear in their 
36:         *    name, without prior written permission of the Apache Software Foundation.
37:         *
38:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
39:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
40:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
41:         * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
42:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
44:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
45:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
46:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
47:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
48:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49:         * SUCH DAMAGE.
50:         * ====================================================================
51:         *
52:         * This software consists of voluntary contributions made by many
53:         * individuals on behalf of the Apache Software Foundation.  For more
54:         * information on the Apache Software Foundation, please see
55:         * <http://www.apache.org/>.
56:         */
57:
58:        package org.apache.oro.util;
59:
60:        /**
61:         * An interface defining the basic functions of a cache.
62:         *
63:         * @version @version@
64:         * @since 1.0
65:         */
66:        public interface Cache {
67:
68:            public void addElement(Object key, Object value);
69:
70:            public Object getElement(Object key);
71:
72:            /**
73:             * Returns the number of elements in the cache, not to be confused with
74:             * the {@link #capacity()} which returns the number
75:             * of elements that can be held in the cache at one time.
76:             * <p>
77:             * @return  The current size of the cache (i.e., the number of elements
78:             *          currently cached).
79:             */
80:            public int size();
81:
82:            /**
83:             * Returns the maximum number of elements that can be cached at one time.
84:             * <p>
85:             * @return The maximum number of elements that can be cached at one time.
86:             */
87:            public int capacity();
88:
89:        }
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