/*
============================================================================
The Apache Software License, Version 1.1
============================================================================
Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without modifica-
tion, 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. The end-user documentation included with the redistribution, if any, must
include the following acknowledgment: "This product includes software
developed by the Apache Software Foundation (http://www.apache.org/)."
Alternately, this acknowledgment may appear in the software itself, if
and wherever such third-party acknowledgments normally appear.
4. The names "Apache Cocoon" and "Apache Software Foundation" must not be
used to endorse or promote products derived from this software without
prior written permission. For written permission, please contact
apache@apache.org.
5. Products derived from this software may not be called "Apache", nor may
"Apache" appear in their name, without prior written permission of the
Apache Software Foundation.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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*/
package org.apache.cocoon.components.treeprocessor.sitemap;
import java.util.ArrayList;
import java.util.List;
import org.apache.avalon.framework.component.Component;
import org.apache.avalon.framework.component.ComponentManager;
import org.apache.avalon.framework.component.Composable;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.cocoon.components.flow.Interpreter;
import org.apache.cocoon.components.flow.InterpreterSelector;
import org.apache.cocoon.components.treeprocessor.AbstractProcessingNode;
import org.apache.cocoon.components.treeprocessor.InvokeContext;
import org.apache.cocoon.components.treeprocessor.variables.VariableResolver;
import org.apache.cocoon.components.treeprocessor.variables.VariableResolverFactory;
import org.apache.cocoon.environment.Environment;
import org.apache.cocoon.sitemap.PatternException;
/**
* Node to handle <map:continue with="...">
*
* @author <a href="mailto:ovidiu@apache.org">Ovidiu Predescu</a>
* @since March 25, 2002
* @version CVS $Id: ContinueNode.java,v 1.3 2003/10/24 13:36:40 vgritsenko Exp $
*/
public class ContinueNode
extends AbstractProcessingNode
implements Configurable, Composable
{
protected String continuationId;
protected List parameters;
protected VariableResolver continuationIdResolver;
protected ComponentManager manager;
public ContinueNode(String contId) {
this.continuationId = contId;
}
public void configure(Configuration config)
throws ConfigurationException
{
parameters = new ArrayList();
Configuration[] params = config.getChildren("parameter");
for (int i = 0; i < params.length; i++) {
Configuration param = params[i];
String name = param.getAttribute("name", null);
String value = param.getAttribute("value", null);
parameters.add(new Interpreter.Argument(name, value));
}
try {
// The continuation id should would need to be resolved at all
// times, but who knows...
if (VariableResolverFactory.needsResolve(continuationId)) {
this.continuationIdResolver
= VariableResolverFactory.getResolver(continuationId, this.manager);
}
} catch (PatternException ex) {
throw new ConfigurationException(ex.toString());
}
}
public void compose(ComponentManager manager) {
this.manager = manager;
}
public boolean invoke(Environment env, InvokeContext context)
throws Exception
{
List params = null;
// Resolve parameters
if (this.parameters != null) {
params = CallFunctionNode.resolveList(this.parameters, this.manager,
context, env.getObjectModel());
}
String contId = continuationId;
if (continuationIdResolver != null) {
contId = continuationIdResolver.resolve(context, env.getObjectModel());
}
InterpreterSelector selector
= (InterpreterSelector)manager.lookup(Interpreter.ROLE);
// FIXME: How to detect the language associated with the
// continuation object? Use the default language for now, but it
// should be fixed ASAP.
String language = selector.getDefaultLanguage();
// Obtain the Interpreter instance for this language
Interpreter interpreter = (Interpreter)selector.select(language);
// Obtain the redirector
// Redirector redirector = PipelinesNode.getRedirector(env);
try {
interpreter.handleContinuation(contId, params, env /*, redirector*/);
} finally {
selector.release((Component)interpreter);
}
return true;
}
}