/*
* Copyright 2011 <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.ocpsoft.rewrite.servlet.impl;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import javax.servlet.ServletContext;
import org.ocpsoft.logging.Logger;
import org.ocpsoft.rewrite.servlet.ServletRegistration;
import org.ocpsoft.rewrite.servlet.spi.ServletRegistrationProvider;
/**
* Implementation of {@link ServletRegistrationProvider} that parses <code>web.xml</code> to look for Servlets.
*
* @author Christian Kaltepoth
*/
public class WebXmlServletRegistrationProvider implements ServletRegistrationProvider
{
private final Logger log = Logger.getLogger(WebXmlServletRegistrationProvider.class);
@Override
public int priority()
{
return 20;
}
@Override
public List<ServletRegistration> getServletRegistrations(ServletContext context)
{
InputStream webXmlStream = context.getResourceAsStream("/WEB-INF/web.xml");
if (webXmlStream != null) {
try {
WebXmlServletRegistrationParser parser = new WebXmlServletRegistrationParser();
parser.parse(webXmlStream);
return parser.getRegistrations();
}
catch (IOException e) {
log.warn("Failed to parse web.xml to look for servlet registations", e);
}
}
return null;
}
}