1 /*
2 * $Id$
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 package org.apache.struts.tiles2.preparer;
23
24 import org.apache.struts.action.Action;
25 import org.apache.tiles.AttributeContext;
26 import org.apache.tiles.preparer.PreparerException;
27 import org.apache.tiles.preparer.ViewPreparer;
28 import org.apache.tiles.request.Request;
29 import org.apache.tiles.request.jakarta.servlet.ServletRequest;
30
31
32 /**
33 * Struts wrapper implementation of Controller. This implementation wraps an
34 * <code>Action</code> in a <code>Controller</code>.
35 */
36 public class ActionPreparer implements ViewPreparer {
37
38 /**
39 * Struts action wrapped.
40 */
41 private Action action = null;
42
43 /**
44 * Constructor.
45 *
46 * @param action Action to be wrapped.
47 */
48 public ActionPreparer(Action action) {
49 this.action = action;
50 }
51
52 /** {@inheritDoc} */
53 public void execute(Request tilesContext,
54 AttributeContext attributeContext) throws PreparerException {
55 if (tilesContext instanceof ServletRequest) {
56 ServletRequest servletTilesContext =
57 (ServletRequest) tilesContext;
58 try {
59 this.action.execute(null, null, servletTilesContext.getRequest(),
60 servletTilesContext.getResponse());
61 } catch (Exception e) {
62 throw new PreparerException(
63 "The enclosed action threw an exception", e);
64 }
65 } else {
66 throw new PreparerException("Not using a ServletTilesRequestContext");
67 }
68 }
69 }