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Java > Open Source Codes > org > apache > commons > jelly > Script


1 /*
2  * Copyright 2002,2004 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 package org.apache.commons.jelly;
18
19 /**
20  * <p><code>Script</code> represents a Jelly script.
21  * A Script <b>must</b> be thread safe so care should be taken on the
22  * implementations of Scripts. However Tags are only used in a single thread
23  * (each thread will have create its own Tags for the Script it is running)
24  * so multi threading is not a concern for Tag developers.</p>
25  *
26  * @author <a HREF="mailto:jstrachan@apache.org">James Strachan</a>
27  * @version $Revision: 155420 $
28  */
29 public interface Script {
30
31     /** Called by the parser to allow a more efficient
32      * representation of the script to be used.
33      */
34     public Script compile() throws JellyException;
35
36     /** Evaluates the body of a tag */
37     public void run(JellyContext context, XMLOutput output) throws JellyTagException;
38
39 }
40
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