/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.lenya.cms.ac.usecase.impl;
import java.io.InputStream;
import java.util.HashSet;
import java.util.Set;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.lenya.ac.AccessController;
import org.apache.lenya.ac.cache.BuildException;
import org.apache.lenya.ac.cache.InputStreamBuilder;
import org.apache.lenya.cms.cocoon.source.SourceUtil;
import org.apache.lenya.util.Assert;
import org.apache.lenya.xml.DocumentHelper;
import org.apache.lenya.xml.NamespaceHelper;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* Builder for usecase roles.
*
* @version $Id: UsecaseRolesBuilder.java 562973 2007-08-05 21:44:42Z nettings $
*/
public class UsecaseRolesBuilder implements InputStreamBuilder {
protected static final String USECASES_ELEMENT = "usecases";
protected static final String USECASE_ELEMENT = "usecase";
protected static final String ROLE_ELEMENT = "role";
protected static final String ID_ATTRIBUTE = "id";
/**
* @see org.apache.lenya.ac.cache.InputStreamBuilder#build(java.io.InputStream)
*/
public Object build(InputStream stream) throws BuildException {
UsecaseRoles usecaseRoles = new UsecaseRoles();
Document document;
try {
document = DocumentHelper.readDocument(stream);
} catch (Exception e) {
throw new BuildException(e);
}
Assert.isTrue("Correct usecase policies XML", document.getDocumentElement().getLocalName()
.equals(USECASES_ELEMENT));
NamespaceHelper helper = new NamespaceHelper(AccessController.NAMESPACE,
AccessController.DEFAULT_PREFIX, document);
Element[] usecaseElements = helper.getChildren(document.getDocumentElement(),
USECASE_ELEMENT);
for (int i = 0; i < usecaseElements.length; i++) {
String usecaseId = usecaseElements[i].getAttribute(ID_ATTRIBUTE);
// add roles only if not overridden by child publication
if (!usecaseRoles.hasRoles(usecaseId)) {
Element[] roleElements = helper.getChildren(usecaseElements[i], ROLE_ELEMENT);
Set roleIds = new HashSet();
for (int j = 0; j < roleElements.length; j++) {
String roleId = roleElements[j].getAttribute(ID_ATTRIBUTE);
roleIds.add(roleId);
}
String[] roleIdArray = (String[]) roleIds.toArray(new String[roleIds.size()]);
usecaseRoles.setRoles(usecaseId, roleIdArray);
}
}
return usecaseRoles;
}
/**
* Saves the usecase roles.
* @param usecaseRoles The roles.
* @param sourceUri The source to save to.
* @param manager The service manager.
* @throws BuildException if an error occurs.
*/
public void save(UsecaseRoles usecaseRoles, String sourceUri, ServiceManager manager) throws BuildException {
try {
NamespaceHelper helper = new NamespaceHelper(AccessController.NAMESPACE,
AccessController.DEFAULT_PREFIX, USECASES_ELEMENT);
String[] usecaseNames = usecaseRoles.getUsecaseNames();
for (int u = 0; u < usecaseNames.length; u++) {
Element usecaseElement = helper.createElement(USECASE_ELEMENT);
helper.getDocument().getDocumentElement().appendChild(usecaseElement);
usecaseElement.setAttribute(ID_ATTRIBUTE, usecaseNames[u]);
String[] roles = usecaseRoles.getRoles(usecaseNames[u]);
for (int r = 0; r < roles.length; r++) {
Element roleElement = helper.createElement(ROLE_ELEMENT);
usecaseElement.appendChild(roleElement);
roleElement.setAttribute(ID_ATTRIBUTE, roles[r]);
}
}
SourceUtil.writeDOM(helper.getDocument(), sourceUri, manager);
} catch (Exception e) {
throw new BuildException(e);
}
}
}