package addressbook;
/*
* Copyright 1999-2004 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.
*
* CVS $Id: ListContacts.java,v 1.8 2004/02/08 01:16:21 vgritsenko Exp $
*/
import java.io.IOException;
import java.net.URLEncoder;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.ResourceIterator;
import org.xmldb.api.base.ResourceSet;
import org.xmldb.api.modules.XPathQueryService;
/**
* Class to list all contacts in the database
*/
public class ListContacts extends Action {
public boolean list(HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException {
Collection col = null;
try {
// Get a reference to the session
HttpSession session = request.getSession(true);
// Retrieve the Group instance from the session
Group group = (Group)session.getAttribute("group");
// Get a collection instance
col = getCollection(request,response);
XPathQueryService service = (XPathQueryService)col.getService("XPathQueryService",XMLDBAPIVERSION);
// Get all Person elements from the database
ResourceSet resultSet = service.query("/person");
ResourceIterator results = resultSet.getIterator();
// Clear out group object...
group.removeAll();
// Add results of the Xpath query to the Group instance
group.addResults(results);
} catch (Exception e) {
e.printStackTrace();
// there's not much else we can do if the response is committed
if (response.isCommitted())
return true;
e.printStackTrace();
// Catch the exception and send the user to the error page
if (e.getMessage() != null ) {
response.sendRedirect("/addressbook/error.jsp?error=" + URLEncoder.encode(e.getMessage()) );
}
else {
response.sendRedirect("/addressbook/error.jsp" );
}
}
return true;
}
}