1 package org.apache.turbine.modules;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import org.apache.turbine.Turbine;
23 import org.apache.turbine.pipeline.PipelineData;
24
25 /**
26 * The purpose of this class is to allow one to load and execute
27 * Action modules.
28 *
29 * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a>
30 * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
31 * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a>
32 * @version $Id$
33 */
34 public class ActionLoader
35 extends GenericLoader<Action>
36 {
37 /** The single instance of this class. */
38 private static ActionLoaderder.html#ActionLoader">ActionLoader instance = new ActionLoader();
39
40 /**
41 * These ctor's are private to force clients to use getInstance()
42 * to access this class.
43 */
44 private ActionLoader()
45 {
46 super(Action.class,
47 () -> Turbine.getConfiguration().getInt(Action.CACHE_SIZE_KEY,
48 Action.CACHE_SIZE_DEFAULT));
49 }
50
51 /**
52 * Attempts to load and execute the external action.
53 *
54 * @param pipelineData Turbine information.
55 * @param name Name of object that will execute the action.
56 * @throws Exception a generic exception.
57 */
58 @Override
59 public void exec(PipelineData pipelineData, String name)
60 throws Exception
61 {
62 getAssembler(name).perform(pipelineData);
63 }
64
65 /**
66 * The method through which this class is accessed.
67 *
68 * @return The single instance of this class.
69 */
70 public static ActionLoader getInstance()
71 {
72 return instance;
73 }
74 }