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Posted to cvs@cocoon.apache.org by ov...@apache.org on 2002/09/24 10:28:10 UTC
cvs commit: xml-cocoon2/src/java/org/apache/cocoon/components/treeprocessor/sitemap FlowNode.java
ovidiu 2002/09/24 01:28:10
Added: src/java/org/apache/cocoon/components/treeprocessor/sitemap
FlowNode.java
Log:
Created. Handler for the <map:flow> construct in the sitemap.
Revision Changes Path
1.1 xml-cocoon2/src/java/org/apache/cocoon/components/treeprocessor/sitemap/FlowNode.java
Index: FlowNode.java
===================================================================
/*
============================================================================
The Apache Software License, Version 1.1
============================================================================
Copyright (C) 1999-2002 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
APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.apache.cocoon.components.treeprocessor.sitemap;
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.context.ContextException;
import org.apache.avalon.framework.context.Contextualizable;
import org.apache.cocoon.Constants;
import org.apache.cocoon.components.flow.Interpreter;
import org.apache.cocoon.components.flow.AbstractInterpreter;
import org.apache.cocoon.components.treeprocessor.AbstractProcessingNode;
import org.apache.cocoon.components.treeprocessor.InvokeContext;
import org.apache.cocoon.environment.Context;
import org.apache.cocoon.environment.Environment;
/**
* Handler for <map:flow> element in the sitemap.
*
* @author <a href="mailto:ovidiu@apache.org">Ovidiu Predescu</a>
* @since September 13, 2002
*/
public class FlowNode extends AbstractProcessingNode
implements Composable, Contextualizable
{
ComponentManager manager;
String language;
Context context;
Interpreter interpreter;
public FlowNode(String language)
{
this.language = language;
}
/**
* This method should never be called by the TreeProcessor, since a
* <code><map:flow></code> element should not be in an
* "executable" sitemap node.
*
* @param env an <code>Environment</code> value
* @param context an <code>InvokeContext</code> value
* @return a <code>boolean</code> value
* @exception Exception if an error occurs
*/
public boolean invoke(Environment env, InvokeContext context)
throws Exception
{
return true;
}
public void contextualize(org.apache.avalon.framework.context.Context context)
throws ContextException
{
this.context = (Context)context.get(Constants.CONTEXT_ENVIRONMENT_CONTEXT);
}
/**
*
* Lookup an flow {@link
* org.apache.cocoon.components.flow.Interpreter} instance to hold
* the scripts defined within the <code><map:flow></code> in
* the sitemap.
*
* @param manager a <code>ComponentManager</code> value
*/
public void compose(ComponentManager manager)
throws ComponentException
{
this.manager = manager;
try {
ComponentSelector selector
= (ComponentSelector)manager.lookup(Interpreter.ROLE);
// Obtain the Interpreter instance for this language
interpreter = (Interpreter)selector.select(language);
}
catch (Exception ex) {
throw new ComponentException("ScriptNode: Couldn't obtain a flow "
+ "interpreter for " + language
+ ": " + ex);
}
}
public Interpreter getInterpreter()
{
return interpreter;
}
}
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