/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.acting;
import org.apache.bsf.BSFManager;
import org.apache.bsf.util.IOUtils;
import org.apache.avalon.framework.parameters.Parameters;
import org.apache.avalon.framework.thread.ThreadSafe;
import org.apache.cocoon.ProcessingException;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Redirector;
import org.apache.cocoon.environment.SourceResolver;
import org.apache.excalibur.source.Source;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* A simple action that executes any script that can be run by the BSF
*
* @author <a href="mailto:jafoster@uwaterloo.ca">Jason Foster</a>
* @version CVS $Id: ScriptAction.java,v 1.4 2004/04/03 01:32:29 antonio Exp $
*/
public class ScriptAction
extends ServiceableAction
implements ThreadSafe {
public Map act( Redirector redirector,
SourceResolver resolver,
Map objectModel,
String source,
Parameters par )
throws Exception {
Source src = null;
try {
// Figure out what script to open. A missing script name is caught
// by the resolver/SystemId grouping later on and causes an exception
String scriptName = source;
// Locate the appropriate file on the filesytem
src = resolver.resolveURI(scriptName);
String systemID = src.getURI();
if (this.getLogger().isDebugEnabled()) {
getLogger().debug("script source [" + scriptName + "]");
getLogger().debug("script resolved to [" + systemID + "]");
}
Reader in = new InputStreamReader(src.getInputStream());
// Set up the BSF manager and register relevant helper "beans"
BSFManager mgr = new BSFManager();
HashMap actionMap = new HashMap();
// parameters to act(...)
mgr.registerBean("resolver", resolver);
mgr.registerBean("objectModel", objectModel);
mgr.registerBean("parameters", par);
// ScriptAction housekeeping
mgr.registerBean("actionMap", actionMap);
// helpers
mgr.registerBean("logger", getLogger());
mgr.registerBean("request", ( ObjectModelHelper.getRequest(objectModel) ) );
mgr.registerBean("scriptaction", this );
mgr.registerBean("manager", this.manager );
if (this.getLogger().isDebugEnabled()) {
getLogger().debug("BSFManager execution begining");
}
// Execute the script
mgr.exec(BSFManager.getLangFromFilename(systemID), systemID, 0, 0,
IOUtils.getStringFromReader(in));
if (this.getLogger().isDebugEnabled()) {
getLogger().debug("BSFManager execution complete");
}
// Figure out what to return
// TODO: decide on a more robust communication method
if ( actionMap.containsKey( "scriptaction-continue" )) {
return ( Collections.unmodifiableMap(actionMap) );
} else {
return (null);
}
} catch (Exception e) {
throw new ProcessingException(
"Exception in ScriptAction.act()", e);
} finally {
resolver.release( src );
} // try/catch
} // public Map act(...)
} // public class ScriptAction