/*
* $Header: /home/cvs/jakarta-slide/src/webdav/server/org/apache/slide/webdav/method/report/ExpandPropertyReport.java,v 1.2.2.1 2004/02/05 16:11:24 mholz Exp $
* $Revision: 1.2.2.1 $
* $Date: 2004/02/05 16:11:24 $
*
* ====================================================================
*
* Copyright 1999-2002 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.slide.webdav.method.report;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import org.apache.slide.common.NamespaceAccessToken;
import org.apache.slide.common.PropertyParseException;
import org.apache.slide.common.RequestedProperties;
import org.apache.slide.common.RequestedPropertiesImpl;
import org.apache.slide.common.SlideException;
import org.apache.slide.common.SlideToken;
import org.apache.slide.content.NodeRevisionDescriptor;
import org.apache.slide.content.NodeRevisionDescriptors;
import org.apache.slide.structure.ObjectNode;
import org.apache.slide.webdav.WebdavServletConfig;
import org.apache.slide.webdav.util.DeltavConstants;
import org.apache.slide.webdav.util.PreconditionViolationException;
import org.apache.slide.webdav.util.WebdavUtils;
import org.jdom.Element;
import org.jdom.Namespace;
/**
* DAV:expand-property report worker.
*
* @author <a href="mailto:peter.nevermann@softwareag.com">Peter Nevermann</a>
*/
public class ExpandPropertyReport extends AbstractReport implements DeltavConstants {
private static final String PROPERTY_LIST = "propertylist";
private List propertyElmList;
/**
* Constructor
*
* @param slideToken a SlideToken
* @param token a NamespaceAccessToken
* @param config a WebdavServletConfig
* @param serverUrl a String
* @param contextPath a String
*/
public ExpandPropertyReport(SlideToken slideToken, NamespaceAccessToken token, WebdavServletConfig config, String serverUrl, String contextPath) {
super(slideToken, token, config, serverUrl, contextPath);
}
/**
* Initialize report worker with specified report element
*
* @param resourcePath a String
* @param expandPropertyElm an Element
*
* @throws PreconditionViolationException
*/
public void init(String resourcePath, Element expandPropertyElm) throws PreconditionViolationException {
this.propertyElmList = expandPropertyElm.getChildren(E_PROPERTY, DNSP);
}
/**
* Execute report and add results to given multistatus element
*
* @param resourcePath a String
* @param multistatusElm an Element
* @param depth an int
*
* @throws SlideException
* @throws IOException
*/
public void execute(String resourcePath, Element multistatusElm, int depth) throws SlideException, IOException {
if (depth < 0) {
return;
}
writeReport( resourcePath, multistatusElm, propertyElmList );
ObjectNode onode = structure.retrieve( slideToken, resourcePath );
Enumeration childrenEnum = structure.getChildren( slideToken, onode );
while( childrenEnum.hasMoreElements() ) {
ObjectNode cnode = (ObjectNode)childrenEnum.nextElement();
execute(cnode.getUri(), multistatusElm, depth-1);
}
}
private void writeReport(String resourcePath, Element multistatusElm, List propertyElmList) {
try {
NodeRevisionDescriptors nrds = content.retrieve(slideToken, resourcePath);
NodeRevisionDescriptor nrd = content.retrieve(slideToken, nrds);
Element response = getResponseElement(slideToken,
resourcePath,
nrd.getRevisionNumber(),
createRequestedProperties(propertyElmList));
multistatusElm.addContent(response);
// check for nested <property> elements
Iterator iterator = propertyElmList.iterator();
while (iterator.hasNext()) {
Element propertyElement = (Element)iterator.next();
List childPropertyList = propertyElement.getChildren();
if (childPropertyList.size() > 0) {
try {
Namespace propertyNamespace = DNSP;
String propertyNamespaceStr = propertyElement.getAttributeValue("namespace");
if( propertyNamespaceStr != null )
propertyNamespace = Namespace.getNamespace(propertyNamespaceStr);
List hrefElements = response.
getChild(E_PROPSTAT, DNSP).
getChild(E_PROP, DNSP).
getChild(propertyElement.getAttribute("name").getValue(), propertyNamespace).
getChildren(E_HREF, DNSP);
Iterator hrefs = new ArrayList(hrefElements).iterator();
while( hrefs.hasNext() ) {
Element hrefElement = (Element)hrefs.next();
if (hrefElement.getText() != null) {
// replace the <href> with <response> of the corresponding resource
writeReport(
WebdavUtils.getSlidePath(hrefElement.getTextTrim(),
contextPath),
(Element)hrefElement.getParent(),
childPropertyList);
hrefElement.getParent().removeContent(hrefElement);
}
}
}
catch (NullPointerException e) {
// there is no such <href> element, so what..?
}
}
}
}
catch (Exception e) {
multistatusElm.addContent(getErrorResponse(resourcePath, WebdavUtils.getErrorCode(e), null));
}
}
private RequestedProperties createRequestedProperties(List propertyElements) throws PropertyParseException {
Element propertyListElement = new Element(PROPERTY_LIST);
Iterator iterator = propertyElements.iterator();
while (iterator.hasNext()) {
propertyListElement.addContent((Element)((Element)iterator.next()).clone());
}
return new RequestedPropertiesImpl(propertyListElement);
}
}