/*
* Copyright 2003,2004 The Apache Software Foundation.
*
* 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.apache.struts.chain.servlet;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.chain.Context;
import org.apache.commons.chain.web.servlet.ServletWebContext;
import org.apache.struts.Globals;
import org.apache.struts.chain.AbstractSelectModule;
import org.apache.struts.chain.Constants;
/**
* <p>Cache the <code>ModuleConfig</code> and <code>MessageResources</code>
* instances for the sub-application module to be used for processing
* this request.</p>
*
* @author Craig R. McClanahan
* @version $Revision: 1.3 $ $Date: 2004/06/24 01:27:31 $
*/
public class SelectModule extends AbstractSelectModule {
// ------------------------------------------------------- Protected Methods
protected String getPrefix(Context context) {
// Identify the URI from which we will match a module prefix
ServletWebContext swcontext = (ServletWebContext) context;
HttpServletRequest request = swcontext.getRequest();
String uri =
(String) request.getAttribute(Constants.INCLUDE_SERVLET_PATH);
if (uri == null) {
uri = request.getServletPath();
}
if (uri == null) {
throw new IllegalArgumentException
("No path information in request");
}
// Identify the module prefix for the current module
String prefix = ""; // Initialize to default prefix
String prefixes[] = (String[])
swcontext.getApplicationScope().get(Globals.MODULE_PREFIXES_KEY);
int lastSlash = 0;
while (prefix.equals("") &&
((lastSlash = uri.lastIndexOf("/")) > 0)) {
uri = uri.substring(0, lastSlash);
for (int i = 0; i < prefixes.length; i++) {
if (uri.equals(prefixes[i])) {
prefix = prefixes[i];
break;
}
}
}
return (prefix);
}
}