lenya/src/java/org/apache/lenya/cms/cocoon/acting DefaultCreatorAction.java,NONE,1.1

Update of /repository/lenya/src/java/org/apache/lenya/cms/cocoon/acting
In directory erbium:/tmp/cvs-serv27719/src/java/org/apache/lenya/cms/cocoon/acting

Added Files:
	DefaultCreatorAction.java 
Log Message:
Added a new default creator action. Unlike the
parentChildCreatorAction this action delegates the handling of the
sitetree to a separate class (and can therefore work with the new
sitetree format).


--- NEW FILE: DefaultCreatorAction.java ---
/*
 * $Id: DefaultCreatorAction.java,v 1.1 2003/05/08 08:37:10 egli Exp $
 * <License>
 * The Apache Software License
 *
 * Copyright (c) 2002 lenya. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this
 *    list of conditions and the following disclaimer in the documentation and/or
 *    other materials provided with the distribution.
 *
 * 3. All advertising materials mentioning features or use of this software must
 *    display the following acknowledgment: "This product includes software developed
 *    by lenya (http://www.lenya.org)"
 *
 * 4. The name "lenya" must not be used to endorse or promote products derived from
 *    this software without prior written permission. For written permission, please
 *    contact [email protected]
 *
 * 5. Products derived from this software may not be called "lenya" nor may "lenya"
 *    appear in their names without prior written permission of lenya.
 *
 * 6. Redistributions of any form whatsoever must retain the following acknowledgment:
 *    "This product includes software developed by lenya (http://www.lenya.org)"
 *
 * THIS SOFTWARE IS PROVIDED BY lenya "AS IS" WITHOUT ANY WARRANTY EXPRESS OR IMPLIED,
 * INCLUDING THE WARRANTY OF NON-INFRINGEMENT AND THE IMPLIED WARRANTIES OF MERCHANTI-
 * BILITY AND FITNESS FOR A PARTICULAR PURPOSE. lenya WILL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY YOU AS A RESULT OF USING THIS SOFTWARE. IN NO EVENT WILL lenya BE LIABLE
 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR LOST PROFITS EVEN IF lenya HAS
 * BEEN ADVISED OF THE POSSIBILITY OF THEIR OCCURRENCE. lenya WILL NOT BE LIABLE FOR ANY
 * THIRD PARTY CLAIMS AGAINST YOU.
 *
 * Lenya includes software developed by the Apache Software Foundation, W3C,
 * DOM4J Project, BitfluxEditor and Xopus.
 * </License>
 */
package org.apache.lenya.cms.cocoon.acting;

import java.io.File;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;

import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.DefaultConfigurationBuilder;
import org.apache.avalon.framework.configuration.ConfigurationException;
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.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.XPath;
import org.dom4j.io.SAXReader;

import org.apache.lenya.cms.publication.DefaultSiteTree;
import org.apache.lenya.cms.publication.Label;

import org.apache.lenya.cms.authoring.ParentChildCreatorInterface;


public class DefaultCreatorAction 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 {
        org.apache.cocoon.environment.Source input_source = resolver.resolve("");
        String sitemapParentPath = input_source.getSystemId();
        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");

        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 +
                "\". DefaultBranchCreator will be taken.");
            creator = new org.apache.lenya.cms.authoring.DefaultBranchCreator();
        }

        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);
	
	// add a node to the tree
        getLogger().debug("invoking DefaultSiteTree(" + sitemapParentPath
			  + treeAuthoringPath + ")");
	
	DefaultSiteTree siteTree = new DefaultSiteTree(sitemapParentPath +
						       treeAuthoringPath);
	Label[] labels = new Label[1];
 	labels[0] = new Label(childname, null);
 	siteTree.addNode(parentid, creator.generateTreeId(childid, childType), labels);

        // 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, allParameters);
        } catch (Exception e) {
            getLogger().error(".act(): Creator threw exception: " + e);
        }

	// commit (sort of)
	siteTree.serialize();

        // 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;
    }

}