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Java > Open Source Codes > org > jboss > metadata > spi > retrieval > Item


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2006, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.metadata.spi.retrieval;
23
24 /**
25  * Retrieval Item.
26  *
27  * @param <T> the item type
28  * @author <a HREF="adrian@jboss.com">Adrian Brock</a>
29  * @version $Revision: 57133 $
30  */
31 public interface Item<T>
32 {
33    /**
34     * Whether the item is cachable
35     *
36     * @return true when cachable
37     */
38    boolean isCachable();
39
40    /**
41     * Whether the value is valid
42     *
43     * @return true when valid
44     */
45    boolean isValid();
46    
47    /**
48     * Get the value
49     *
50     * @return the value
51     */
52    T getValue();
53 }
54
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