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Java > Open Source Codes > org > apache > lenya > ac > cache > SourceCache


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *
16  */
17
18 package org.apache.lenya.ac.cache;
19
20 import org.apache.avalon.framework.component.Component;
21
22 /**
23  * Source cache component.
24  * @version $Id: SourceCache.java 43238 2004-08-16 16:06:14Z andreas $
25  */
26 public interface SourceCache extends Component {
27
28     /**
29      * Avalon role of the SourceCache interface.
30      */
31     String JavaDoc ROLE = SourceCache.class.getName();
32
33     /**
34      * Returns a cached object or builds a new object when the cached
35      * object does not exist or is not up to date.
36      * @param sourceUri The URI to build the source from.
37      * @param builder The builder to create a new object if needed.
38      * @return An object.
39      * @throws CachingException when something went wrong.
40      */
41     Object JavaDoc get(String JavaDoc sourceUri, InputStreamBuilder builder) throws CachingException;
42     
43 }
44
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