| /* |
| * 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.cocoon.components.treeprocessor.sitemap; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.avalon.framework.activity.Disposable; |
| import org.apache.avalon.framework.component.ComponentException; |
| import org.apache.avalon.framework.component.ComponentManager; |
| import org.apache.avalon.framework.component.ComponentSelector; |
| import org.apache.avalon.framework.component.Composable; |
| import org.apache.avalon.framework.parameters.Parameters; |
| import org.apache.cocoon.acting.Action; |
| import org.apache.cocoon.components.treeprocessor.InvokeContext; |
| import org.apache.cocoon.components.treeprocessor.ParameterizableProcessingNode; |
| import org.apache.cocoon.components.treeprocessor.SimpleSelectorProcessingNode; |
| import org.apache.cocoon.components.treeprocessor.variables.VariableResolver; |
| import org.apache.cocoon.environment.Environment; |
| import org.apache.cocoon.environment.Redirector; |
| import org.apache.cocoon.environment.SourceResolver; |
| import org.apache.cocoon.sitemap.PatternException; |
| |
| /** |
| * Handles <map:act type="..."> (action-sets calls are handled by {@link ActSetNode}). |
| * |
| * @author <a href="mailto:sylvain@apache.org">Sylvain Wallez</a> |
| * @version CVS $Id$ |
| */ |
| |
| public class ActTypeNode extends SimpleSelectorProcessingNode |
| implements ParameterizableProcessingNode, Disposable, Composable { |
| |
| /** The parameters of this node */ |
| private Map parameters; |
| |
| /** The 'src' attribute */ |
| protected VariableResolver source; |
| |
| /** The 'name' for the variable anchor */ |
| protected String name; |
| |
| /** Pre-selected action, if it's ThreadSafe */ |
| protected Action threadSafeAction; |
| |
| protected ComponentManager manager; |
| |
| protected boolean inActionSet; |
| |
| public ActTypeNode(String type, VariableResolver source, String name, |
| boolean inActionSet) throws PatternException { |
| super(type); |
| this.source = source; |
| this.name = name; |
| this.inActionSet = inActionSet; |
| } |
| |
| public void setParameters(Map parameterMap) { |
| this.parameters = parameterMap; |
| } |
| |
| public void compose(ComponentManager manager) throws ComponentException { |
| this.manager = manager; |
| setSelector((ComponentSelector)manager.lookup(Action.ROLE + "Selector")); |
| |
| // Get the action, if it's thread safe |
| this.threadSafeAction = (Action)this.getThreadSafeComponent(); |
| } |
| |
| public final boolean invoke(Environment env, InvokeContext context) |
| throws Exception { |
| |
| // Perform any common invoke functionality |
| super.invoke(env, context); |
| |
| // Prepare data needed by the action |
| Map objectModel = env.getObjectModel(); |
| Redirector redirector = context.getRedirector(); |
| SourceResolver resolver = getSourceResolver(objectModel); |
| String resolvedSource = source.resolve(context, objectModel); |
| Parameters resolvedParams = |
| VariableResolver.buildParameters(this.parameters, |
| context, objectModel); |
| |
| Map actionResult; |
| |
| // If in action set, merge parameters |
| if (inActionSet) { |
| Parameters callerParams = |
| (Parameters)env.getAttribute(ActionSetNode.CALLER_PARAMETERS); |
| if (resolvedParams == Parameters.EMPTY_PARAMETERS) { |
| // Just swap |
| resolvedParams = callerParams; |
| } else if (callerParams != Parameters.EMPTY_PARAMETERS) { |
| // Build new Parameters object, the both we hare are read-only! |
| Parameters newParams = new Parameters(); |
| // And merge both |
| newParams.merge(resolvedParams); |
| newParams.merge(callerParams); |
| resolvedParams = newParams; |
| } |
| } |
| |
| // If action is ThreadSafe, avoid select() and try/catch block (faster !) |
| if (this.threadSafeAction != null) { |
| actionResult = this.threadSafeAction.act(redirector, resolver, |
| objectModel, resolvedSource, resolvedParams); |
| } else { |
| Action action = (Action)this.selector.select(this.componentName); |
| try { |
| actionResult = action.act(redirector, resolver, |
| objectModel, resolvedSource, resolvedParams); |
| } finally { |
| this.selector.release(action); |
| } |
| } |
| |
| if (redirector.hasRedirected()) { |
| return true; |
| } |
| |
| if (actionResult != null) { |
| // Action succeeded : process children if there are some, with the action result |
| if (this.children != null) { |
| boolean result = this.invokeNodes(this.children, env, context, name, actionResult); |
| |
| if (inActionSet) { |
| // Merge child action results, if any |
| Map childMap = (Map)env.getAttribute(ActionSetNode.ACTION_RESULTS); |
| if (childMap != null) { |
| Map newResults = new HashMap(childMap); |
| newResults.putAll(actionResult); |
| env.setAttribute(ActionSetNode.ACTION_RESULTS, newResults); |
| } else { |
| // No previous results |
| env.setAttribute(ActionSetNode.ACTION_RESULTS, actionResult); |
| } |
| } |
| return result; |
| }// else { |
| // return false; // Return false to continue sitemap invocation |
| //} |
| }// else { |
| return false; // Action failed |
| //} |
| } |
| |
| public void dispose() { |
| if (this.threadSafeAction != null) { |
| this.selector.release(this.threadSafeAction); |
| } |
| this.manager.release(this.selector); |
| } |
| } |