1 /*
2 * $Id: StringRenderer.java 1215008 2011-12-16 00:31:49Z nlebas $
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 package org.apache.tiles.request.render;
22
23 import java.io.IOException;
24
25 import org.apache.tiles.request.Request;
26
27 /**
28 * Renders an attribute that contains a string.
29 *
30 * @version $Rev: 1215008 $ $Date: 2011-12-16 11:31:49 +1100 (Fri, 16 Dec 2011) $
31 */
32 public class StringRenderer implements Renderer {
33
34 /** {@inheritDoc} */
35 @Override
36 public void render(String value, Request request) throws IOException {
37 if (value == null) {
38 throw new CannotRenderException("Cannot render a null string");
39 }
40 request.getWriter().write(value);
41 }
42
43 /** {@inheritDoc} */
44 public boolean isRenderable(String value, Request request) {
45 return value != null;
46 }
47 }