| ServletVelocityResourceListener.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.portal.velocity;
24
25 import com.liferay.portal.kernel.log.Log;
26 import com.liferay.portal.kernel.log.LogFactoryUtil;
27 import com.liferay.portal.kernel.util.Validator;
28 import com.liferay.portal.util.PortalUtil;
29
30 import java.io.ByteArrayInputStream;
31 import java.io.InputStream;
32
33 import javax.servlet.ServletContext;
34
35 import org.apache.velocity.exception.ResourceNotFoundException;
36
37 /**
38 * <a href="ServletVelocityResourceListener.java.html"><b><i>View Source</i></b>
39 * </a>
40 *
41 * @author Alexander Chow
42 */
43 public class ServletVelocityResourceListener extends VelocityResourceListener {
44
45 public InputStream getResourceStream(String source)
46 throws ResourceNotFoundException {
47
48 InputStream is = null;
49
50 int pos = source.indexOf(SERVLET_SEPARATOR);
51
52 if (pos != -1) {
53 String servletContextName = source.substring(0, pos);
54
55 if (Validator.isNull(servletContextName)) {
56 servletContextName = PortalUtil.getPathContext();
57 }
58
59 ServletContext servletContext = VelocityContextPool.get(
60 servletContextName);
61
62 if (servletContext != null) {
63 String name =
64 source.substring(pos + SERVLET_SEPARATOR.length());
65
66 if (_log.isDebugEnabled()) {
67 _log.debug(
68 name + " is associated with the servlet context " +
69 servletContextName + " " + servletContext);
70 }
71
72 is = servletContext.getResourceAsStream(name);
73
74 if ((is == null) && (name.endsWith("/init_custom.vm"))) {
75 if (_log.isWarnEnabled()) {
76 _log.warn(
77 "The template " + name + " should be created");
78 }
79
80 is = new ByteArrayInputStream(new byte[0]);
81 }
82 }
83 else {
84 _log.error(
85 source + " is not valid because " + servletContextName +
86 " does not map to a servlet context");
87 }
88 }
89
90 return is;
91 }
92
93 private static Log _log =
94 LogFactoryUtil.getLog(ServletVelocityResourceListener.class);
95
96 }