/*
* 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.
*
*/
/* $Id: ParentChildCreatorAction.java,v 1.35 2004/03/01 16:18:21 gregor Exp $ */
package org.apache.lenya.cms.cocoon.acting;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.configuration.DefaultConfigurationBuilder;
import org.apache.avalon.framework.parameters.ParameterException;
import org.apache.avalon.framework.parameters.Parameters;
import org.apache.cocoon.ProcessingException;
import org.apache.cocoon.acting.AbstractComplementaryConfigurableAction;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Redirector;
import org.apache.cocoon.environment.Request;
import org.apache.cocoon.environment.Session;
import org.apache.cocoon.environment.SourceResolver;
import org.apache.excalibur.source.Source;
import org.apache.lenya.cms.authoring.ParentChildCreatorInterface;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.XPath;
import org.dom4j.io.SAXReader;
import java.io.File;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
public class ParentChildCreatorAction extends AbstractComplementaryConfigurableAction
implements Configurable {
private String treeAuthoringPath = null;
private String docsPath = null;
private String doctypesPath = null;
/**
* DOCUMENT ME!
*
* @param conf DOCUMENT ME!
*
* @throws ConfigurationException DOCUMENT ME!
*/
public void configure(Configuration conf) throws ConfigurationException {
super.configure(conf);
treeAuthoringPath = conf.getChild("tree-authoring").getAttribute("href");
docsPath = conf.getChild("docs").getAttribute("href");
doctypesPath = conf.getChild("doctypes").getAttribute("href");
getLogger().debug("CONFIGURATION:\nAUTHORING PATH OF TREE=" + treeAuthoringPath);
}
/**
* DOCUMENT ME!
*
* @param redirector DOCUMENT ME!
* @param resolver DOCUMENT ME!
* @param objectModel DOCUMENT ME!
* @param src DOCUMENT ME!
* @param parameters DOCUMENT ME!
*
* @return DOCUMENT ME!
*
* @throws Exception DOCUMENT ME!
*/
public Map act(Redirector redirector, SourceResolver resolver, Map objectModel, String src,
Parameters parameters) throws Exception {
Source input_source = resolver.resolveURI("");
String sitemapParentPath = input_source.getURI();
sitemapParentPath = sitemapParentPath.substring(5); // Remove "file:" protocol
getLogger().debug(".act(): PARENT PATH OF SITEMAP: " + sitemapParentPath);
// Get request object
Request request = ObjectModelHelper.getRequest(objectModel);
if (request == null) {
getLogger().error("No request object");
return null;
}
// Get parameters
String parentid = request.getParameter("parentid");
String childid = request.getParameter("childid");
String childname = request.getParameter("childname");
String childtype = request.getParameter("childtype");
short childType;
if (childtype.equals("branch")) {
childType = ParentChildCreatorInterface.BRANCH_NODE;
} else if (childtype.equals("leaf")) {
childType = ParentChildCreatorInterface.LEAF_NODE;
} else {
getLogger().error("No such child type: " + childtype);
return null;
}
String doctype = request.getParameter("doctype");
String language = request.getParameter("language");
if (!validate(parentid, childid, childname, childtype, doctype)) {
getLogger().error("Exception: Validation of parameters failed");
return null;
}
// Get session
Session session = request.getSession(true);
if (session == null) {
getLogger().error("No session object");
return null;
}
// Get creator
ParentChildCreatorInterface creator = null;
String absoluteDoctypesPath = sitemapParentPath + doctypesPath;
Document doctypesDoc = new SAXReader().read("file:" + absoluteDoctypesPath +
"doctypes.xconf");
Attribute creator_src = (Attribute) doctypesDoc.selectSingleNode("/doctypes/doc[@type='" +
doctype + "']/creator/@src");
if (creator_src != null) {
getLogger().info(".act(): Creator found for \"" + doctype + "\": " +
creator_src.getName() + " " + creator_src.getPath() + " " + creator_src.getValue());
// now get the constructor that accepts the configuration
Class creatorClass = Class.forName(creator_src.getValue());
creator = (ParentChildCreatorInterface) creatorClass.newInstance();
} else {
getLogger().warn(".act(): No creator found for \"" + doctype +
"\". DefaultParentChildreator will be taken.");
creator = new org.apache.lenya.cms.authoring.DefaultCreator();
}
getLogger().debug(".act(): Creator : " + creator.getClass().getName());
// Init creator
// "Read" the configuration from the DOM node
DefaultConfigurationBuilder defaultConfigBuilder = new DefaultConfigurationBuilder();
Configuration[] docTypeConfigs = defaultConfigBuilder.buildFromFile(absoluteDoctypesPath +
"doctypes.xconf").getChildren();
Configuration doctypeConf = null;
for (int i = 0; i < docTypeConfigs.length; i++) {
String typeName = docTypeConfigs[i].getAttribute("type");
if (typeName.equals(doctype)) {
doctypeConf = docTypeConfigs[i].getChild("creator", false);
}
}
creator.init(doctypeConf);
// Transaction should actually be started here!
String treefilename = sitemapParentPath + treeAuthoringPath;
getLogger().debug(".act(): Filename of tree: " + treefilename);
if (!new File(treefilename).exists()) {
getLogger().error(".act(): No tree: " + treefilename);
} else {
if (!updateTree(childtype, childType, childid, childname, parentid, doctype, creator, treefilename)) return null;
}
// Transaction should actually be finished here!
// Create actual document
// grab all the parameters from session, request params and
// sitemap params
HashMap allParameters = new HashMap();
String[] names = parameters.getNames();
for (int i = 0; i < names.length; i++) {
String name = names[i];
String value = null;
try {
value = parameters.getParameter(name);
} catch (ParameterException pe) {
value = null;
}
allParameters.put(name, value);
}
Enumeration requestParameters = request.getParameterNames();
while (requestParameters.hasMoreElements()) {
String requestParameterName = (String) requestParameters.nextElement();
if (allParameters.containsKey(requestParameterName)) {
// we do not allow name clashes
throw new ProcessingException("Name clash in request parameter " +
"and sitemap parameter: " + requestParameterName);
}
allParameters.put(requestParameterName, request.getParameter(requestParameterName));
}
Enumeration sessionAttributeNames = session.getAttributeNames();
while (sessionAttributeNames.hasMoreElements()) {
String sessionAttributeName = (String) sessionAttributeNames.nextElement();
if (allParameters.containsKey(sessionAttributeName)) {
// we do not allow name clashes
throw new ProcessingException("Name clash in session attribute " +
"and request parameter or sitemap parameter: " + sessionAttributeName);
}
allParameters.put(sessionAttributeName, session.getAttribute(sessionAttributeName));
}
try {
creator.create(new File(absoluteDoctypesPath + "samples"),
new File(sitemapParentPath + docsPath + parentid), childid, childType, childname, language,
allParameters);
} catch (Exception e) {
getLogger().error(".act(): Creator threw exception: " + e);
}
// Redirect to referer
String parent_uri = (String) session.getAttribute(
"org.apache.lenya.cms.cocoon.acting.ParentChildCreatorAction.parent_uri");
getLogger().info(".act(): Child added");
HashMap actionMap = new HashMap();
actionMap.put("parent_uri", parent_uri);
session.removeAttribute(
"org.apache.lenya.cms.cocoon.acting.ParentChildCreatorAction.parent_uri");
return actionMap;
}
/**
* DOCUMENT ME!
*
* @param parentid DOCUMENT ME!
* @param childid DOCUMENT ME!
* @param childname DOCUMENT ME!
* @param childtype DOCUMENT ME!
* @param doctype DOCUMENT ME!
*
* @return DOCUMENT ME!
*/
public boolean validate(String parentid, String childid, String childname, String childtype,
String doctype) {
getLogger().debug(".validate(): parentid=" + parentid + " ; childid=" + childid +
" ; childname=" + childname + " ; childtype=" + childtype + " ; doctype=" + doctype);
if ((childid.indexOf(" ") >= 0) || (childid.length() == 0)) {
return false;
}
if (childname.length() == 0) {
return false;
}
return true;
}
/**
*
*/
private boolean updateTree(String childtype, short childType, String childid, String childname, String parentid, String doctype, ParentChildCreatorInterface creator, String treefilename) throws Exception {
Document doc = new SAXReader().read("file:" + treefilename);
// Get parent element
StringTokenizer st = new StringTokenizer(parentid, "/");
String xpath_string = "/tree/branch"; // Trunk of tree
while (st.hasMoreTokens()) {
xpath_string = xpath_string + "/branch[@relURI='" + st.nextToken() + "']";
}
getLogger().debug("XPATH: " + xpath_string);
XPath xpathSelector = DocumentHelper.createXPath(xpath_string);
List nodes = xpathSelector.selectNodes(doc);
if (nodes.isEmpty()) {
getLogger().error(".act(): No nodes: " + xpath_string);
getLogger().error(".act(): No child added!");
return false;
}
Element parent_element = (Element) nodes.get(0);
getLogger().debug("PARENT ELEMENT: " + parent_element.getPath());
// Set child type: branch or leaf
childType = creator.getChildType(childType);
if (childType == ParentChildCreatorInterface.BRANCH_NODE) {
childtype = "branch";
} else {
childtype = "leaf";
}
// Check if child already exists
String newChildXPath = xpath_string + "/" + childtype;
getLogger().debug("CHECK: " + newChildXPath);
if (doc.selectSingleNode(newChildXPath + "[@relURI='" +
creator.generateTreeId(childid, childType) + "']") != null) {
getLogger().error("Exception: XPath exists: " + newChildXPath + "[@relURI='" +
creator.generateTreeId(childid, childType) + "']");
getLogger().error("No child added");
return false;
}
// Add node: branch or leaf
parent_element.addElement(childtype)
.addAttribute("relURI", creator.generateTreeId(childid, childType))
.addAttribute("doctype", doctype).addAttribute("menuName",
creator.getChildName(childname));
getLogger().debug("Tree has been modified: " + doc.asXML());
// Write new tree
java.io.FileWriter fileWriter = new java.io.FileWriter(treefilename);
doc.write(fileWriter);
fileWriter.close();
return true;
}
}