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From coli...@apache.org
Subject cvs commit: cocoon-2.1/src/scratchpad/src/org/apache/cocoon/generation FlowVelocityGenerator.java
Date Sat, 12 Apr 2003 21:29:05 GMT
coliver     2003/04/12 14:29:05

  Modified:    src/scratchpad/src/org/apache/cocoon/generation
                        FlowVelocityGenerator.java
  Log:
  Incorporated patch from Albert Kwong and attempted to make backward-compatible with VelocityGenerator
  
  Revision  Changes    Path
  1.4       +583 -380  cocoon-2.1/src/scratchpad/src/org/apache/cocoon/generation/FlowVelocityGenerator.java
  
  Index: FlowVelocityGenerator.java
  ===================================================================
  RCS file: /home/cvs/cocoon-2.1/src/scratchpad/src/org/apache/cocoon/generation/FlowVelocityGenerator.java,v
  retrieving revision 1.3
  retrieving revision 1.4
  diff -u -r1.3 -r1.4
  --- FlowVelocityGenerator.java	6 Apr 2003 03:04:27 -0000	1.3
  +++ FlowVelocityGenerator.java	12 Apr 2003 21:29:05 -0000	1.4
  @@ -63,7 +63,11 @@
   import org.apache.cocoon.ResourceNotFoundException;
   import org.apache.cocoon.components.flow.WebContinuation;
   import org.apache.cocoon.environment.Environment;
  +import org.apache.cocoon.environment.ObjectModelHelper;
  +import org.apache.cocoon.environment.Request;
  +import org.apache.cocoon.environment.Response;
   import org.apache.cocoon.environment.SourceResolver;
  +import org.apache.cocoon.environment.Session;
   import org.apache.commons.collections.ExtendedProperties;
   import org.apache.commons.jxpath.DynamicPropertyHandler;
   import org.apache.commons.jxpath.JXPathBeanInfo;
  @@ -73,13 +77,24 @@
   import org.apache.velocity.app.Velocity;
   import org.apache.velocity.app.VelocityEngine;
   import org.apache.velocity.context.Context;
  +import org.apache.velocity.VelocityContext;
   import org.apache.velocity.runtime.RuntimeServices;
   import org.apache.velocity.runtime.log.LogSystem;
   import org.xml.sax.InputSource;
   import org.xml.sax.SAXException;
   import org.xml.sax.SAXParseException;
  -import org.mozilla.javascript.*;
  -import org.apache.velocity.util.introspection.*;
  +import org.mozilla.javascript.Scriptable;
  +import org.mozilla.javascript.Wrapper;
  +import org.mozilla.javascript.JavaScriptException;
  +import org.mozilla.javascript.ScriptableObject;
  +import org.mozilla.javascript.NativeArray;
  +import org.mozilla.javascript.Undefined;
  +import org.mozilla.javascript.ScriptRuntime;
  +import org.apache.velocity.util.introspection.UberspectImpl;
  +import org.apache.velocity.util.introspection.VelMethod;
  +import org.apache.velocity.util.introspection.VelPropertyGet;
  +import org.apache.velocity.util.introspection.VelPropertySet;
  +import org.apache.velocity.util.introspection.Info;
   import java.beans.PropertyDescriptor;
   import java.io.IOException;
   import java.io.InputStream;
  @@ -155,279 +170,453 @@
           implements Initializable, Configurable, LogSystem {
   
       /**
  +     * <p>Velocity context implementation specific to the Servlet environment.</p>
  +     *
  +     * <p>It provides the following special features:</p>
  +     * <ul>
  +     *   <li>puts the request, response, session, and servlet context objects
  +     *       into the Velocity context for direct access, and keeps them 
  +     *       read-only</li>
  +     *   <li>supports a read-only toolbox of view tools</li>
  +     *   <li>auto-searches servlet request attributes, session attributes and
  +     *       servlet context attribues for objects</li>
  +     * </ul>
  +     *
  +     * <p>The {@link #internalGet(String key)} method implements the following search
order
  +     * for objects:</p>
  +     * <ol>
  +     *   <li>servlet request, servlet response, servlet session, servlet context</li>
  +     *   <li>toolbox</li>
  +     *   <li>local hashtable of objects (traditional use)</li>
  +     *   <li>servlet request attribues, servlet session attribute, servlet context
  +     *     attributes</li>
  +     * </ol> 
  +     *
  +     * <p>The purpose of this class is to make it easy for web designer to work 
  +     * with Java servlet based web applications. They do not need to be concerned 
  +     * with the concepts of request, session or application attributes and the 
  +     * live time of objects in these scopes.</p>
  +     *  
  +     * <p>Note that the put() method always puts objects into the local hashtable.
  +     * </p>
  +     *
  +     * <p>Acknowledge: the source code is borrowed from the jakarta-velocity-tools
  +     * project with slight modifications.</p>
  +     *
  +     * @author <a href="mailto:albert@charcoalgeneration.com">Albert Kwong</a>
  +     * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
  +     * @author <a href="mailto:sidler@teamup.com">Gabe Sidler</a>
  +     * @author <a href="mailto:albert@charcoalgeneration.com">Albert Kwong</a>
  +     */
  +    public static class ChainedContext extends VelocityContext
  +    {
  +        
  +        /**
  +         * A local reference to the current servlet request.
  +         */ 
  +        private Request request;
  +        
  +        /**
  +         * A local reference to the current servlet response.
  +         */
  +        private Response response;
  +        
  +        /**
  +         * A local reference to the servlet session.
  +         */
  +        private Session session;
  +        
  +        /**
  +         * A local reference to the servlet context.
  +         */
  +        private org.apache.cocoon.environment.Context application;
  +        
  +        /**
  +         * A local reference to pipeline parameters.
  +         */
  +        private Parameters parameters;
  +        
  +        /**
  +         * Key to the HTTP request object.
  +         */
  +        public static final String REQUEST = "request";
  +        
  +        /**
  +         * Key to the HTTP response object.
  +         */
  +        public static final String RESPONSE = "response";
  +        
  +        /**
  +         * Key to the HTTP session object.
  +         */
  +        public static final String SESSION = "session";
  +        
  +        /**
  +         * Key to the servlet context object.
  +         */
  +        public static final String APPLICATION = "context";
  +        
  +        /**
  +         * Key to the servlet context object.
  +         */
  +        public static final String PARAMETERS = "parameters";
  +        
  +        
  +        /**
  +         * Default constructor.
  +         */
  +        public ChainedContext(org.apache.velocity.context.Context ctx, 
  +                              Request request,
  +                              Response response,
  +                              org.apache.cocoon.environment.Context application,
  +                              Parameters parameters)
  +        {
  +            super(null, ctx);
  +            this.request = request;
  +            this.response = response;
  +            this.session = request.getSession(false);
  +            this.application = application;
  +            this.parameters = parameters;
  +        }
  +        
  +        
  +        /**
  +         * <p>Looks up and returns the object with the specified key.</p>
  +         * 
  +         * <p>See the class documentation for more details.</p>
  +         *
  +         * @param key the key of the object requested
  +         * 
  +         * @return the requested object or null if not found
  +         */
  +        public Object internalGet( String key )
  +        {
  +            // make the four scopes of the Apocalypse Read only
  +            if ( key.equals( REQUEST ))
  +                {
  +                    return request;
  +                }
  +            else if( key.equals(RESPONSE) )
  +                {
  +                    return response;
  +                }
  +            else if ( key.equals(SESSION) )
  +                {
  +                    return session;
  +                }
  +            else if ( key.equals(APPLICATION))
  +                {
  +                    return application;
  +                }
  +            else if ( key.equals(PARAMETERS))
  +                {
  +                    return parameters;
  +                }
  +            
  +            Object o = null;
  +            
  +            // try the local hashtable
  +            o = super.internalGet( key );
  +            
  +            // if not found, wander down the scopes...
  +            if (o == null)
  +                {
  +                    o = request.getAttribute( key );
  +                    
  +                    if ( o == null )
  +                        {
  +                            if ( session != null )
  +                                {
  +                                    o = session.getAttribute( key );
  +                                }
  +                            
  +                            if ( o == null )
  +                                {
  +                                    o = application.getAttribute( key );
  +                                }
  +                        }
  +                }
  +            
  +            return o;
  +        }
  +
  +        
  +    }  // ChainedContext
  +
  +    /**
        * Velocity Introspector that supports Rhino JavaScript objects
        * as well as Java Objects
        *
        */
       public static class JSIntrospector extends UberspectImpl {
  -	
  -	public static class JSMethod implements VelMethod {
  -	    
  -	    Scriptable scope;
  -	    String name;
  -	    
  -	    public JSMethod(Scriptable scope, String name) {
  -		this.scope = scope;
  -		this.name = name;
  -	    }
  -	    
  -	    public Object invoke(Object thisArg, Object[] args)
  -		throws Exception {
  -		org.mozilla.javascript.Context cx = org.mozilla.javascript.Context.enter();
  -		try {
  -		    Object result; 
  -		    Scriptable thisObj;
  -		    if (!(thisArg instanceof Scriptable)) {
  -			thisObj = org.mozilla.javascript.Context.toObject(thisArg, scope);
  -		    } else {
  -			thisObj = (Scriptable)thisArg;
  -		    }
  -		    result = ScriptableObject.getProperty(thisObj, name);
  -		    Object[] newArgs = null;
  -		    if (args != null) {
  -			newArgs = new Object[args.length];
  -			for (int i = 0; i < args.length; i++) {
  -			    newArgs[i] = args[i];
  -			    if (args[i] != null && 
  -				!(args[i] instanceof Number) &&
  -				!(args[i] instanceof Boolean) &&
  -				!(args[i] instanceof String) &&
  -				!(args[i] instanceof Scriptable)) {
  -				newArgs[i] = org.mozilla.javascript.Context.toObject(args[i], scope);
  -			    }
  -			}
  -		    }
  -		    result = ScriptRuntime.call(cx, result, thisObj, 
  -						newArgs, scope);
  -		    if (result == Undefined.instance ||
  -			result == ScriptableObject.NOT_FOUND) {
  -			result = null;
  -		    } else while (result instanceof Wrapper) {
  -			result = ((Wrapper)result).unwrap();
  -		    }
  -		    return result;
  -		} catch (JavaScriptException e) {
  -		    throw new java.lang.reflect.InvocationTargetException(e);
  -		} finally {
  -		    org.mozilla.javascript.Context.exit();
  -		}
  -	    }
  -	    
  -	    public boolean isCacheable() {
  -		return false;
  -	    }
  -	    
  -	    public String getMethodName() {
  -		return name;
  -	    }
  -	    
  -	    public Class getReturnType() {
  -		return Object.class;
  -	    }
  -	    
  -	}
  -	
  -	public static class JSPropertyGet implements VelPropertyGet {
  -	    
  -	    Scriptable scope;
  -	    String name;
  -	    
  -	    public JSPropertyGet(Scriptable scope, String name) {
  -		this.scope = scope;
  -		this.name = name;
  -	    }
  -	    
  -	    public Object invoke(Object thisArg) throws Exception {
  -		org.mozilla.javascript.Context.enter();
  -		try {
  -		    Scriptable thisObj;
  -		    if (!(thisArg instanceof Scriptable)) {
  -			thisObj = org.mozilla.javascript.Context.toObject(thisArg, scope);
  -		    } else {
  -			thisObj = (Scriptable)thisArg;
  -		    }
  -		    Object result = ScriptableObject.getProperty(thisObj, name);
  -		    if (result == Undefined.instance || 
  -			result == ScriptableObject.NOT_FOUND) {
  -			result = null;
  -		    } else while (result instanceof Wrapper) {
  -			result = ((Wrapper)result).unwrap();
  -		    }
  -		    return result;
  -		} finally {
  -		    org.mozilla.javascript.Context.exit();
  -		}
  -	    }
  -	    
  -	    public boolean isCacheable() {
  -		return false;
  -	    }
  -	    
  -	    public String getMethodName() {
  -		return name;
  -	    }
  -	    
  -	}
  -	
  -	public static class JSPropertySet implements VelPropertySet {
  -	    
  -	    Scriptable scope;
  -	    String name;
  -	    
  -	    public JSPropertySet(Scriptable scope, String name) {
  -		this.scope = scope;
  -		this.name = name;
  -	    }
  -	    
  -	    public Object invoke(Object thisArg, Object rhs) throws Exception {
  -		org.mozilla.javascript.Context.enter();
  -		try {
  -		    Scriptable thisObj;
  -		    Object arg = rhs;
  -		    if (!(thisArg instanceof Scriptable)) {
  -			thisObj = org.mozilla.javascript.Context.toObject(thisArg, scope);
  -		    } else {
  -			thisObj = (Scriptable)thisArg;
  -		    }
  -		    if (arg != null && 
  -			!(arg instanceof Number) &&
  -			!(arg instanceof Boolean) &&
  -			!(arg instanceof String) &&
  -			!(arg instanceof Scriptable)) {
  -			arg = org.mozilla.javascript.Context.toObject(arg, scope);
  -		    }
  -		    ScriptableObject.putProperty(thisObj, name, arg);
  -		    return rhs;
  -		} finally {
  -		    org.mozilla.javascript.Context.exit();
  -		}
  -	    }
  -	    
  -	    public boolean isCacheable() {
  -		return false;
  -	    }
  -	    
  -	    public String getMethodName() {
  -		return name;        
  -	    }
  -	}
  -	
  -	public static class NativeArrayIterator implements Iterator {
  -	    
  -	    NativeArray arr;
  -	    int index;
  -	    
  -	    public NativeArrayIterator(NativeArray arr) {
  -		this.arr = arr;
  -		this.index = 0;
  -	    }
  -	    
  -	    public boolean hasNext() {
  -		return index < (int)arr.jsGet_length();
  -	    }
  -	    
  -	    public Object next() {
  -		org.mozilla.javascript.Context.enter();
  -		try {
  -		    Object result = arr.get(index++, arr);
  -		    if (result == Undefined.instance ||
  -			result == ScriptableObject.NOT_FOUND) {
  -			result = null;
  -		    } else while (result instanceof Wrapper) {
  -			result = ((Wrapper)result).unwrap();
  -		    }
  -		    return result;
  -		} finally {
  -		    org.mozilla.javascript.Context.exit();
  -		}
  -	    }
  -	    
  -	    public void remove() {
  -		arr.delete(index);
  -	    }
  -	}
  -	
  -	public static class ScriptableIterator implements Iterator {
  -	    
  -	    Scriptable scope;
  -	    Object[] ids;
  -	    int index;
  -	    
  -	    public ScriptableIterator(Scriptable scope) {
  -		this.scope = scope;
  -		this.ids = scope.getIds();
  -		this.index = 0;
  -	    }
  -	    
  -	    public boolean hasNext() {
  -		return index < ids.length;
  -	    }
  -	    
  -	    public Object next() {
  -		org.mozilla.javascript.Context.enter();
  -		try {
  -		    Object result = 
  -			ScriptableObject.getProperty(scope, 
  -						     ids[index++].toString());
  -		    if (result == Undefined.instance ||
  -			result == ScriptableObject.NOT_FOUND) {
  -			result = null;
  -		    } else while (result instanceof Wrapper) {
  -			result = ((Wrapper)result).unwrap();
  -		    }
  -		    return result;
  -		} finally {
  -		    org.mozilla.javascript.Context.exit();
  -		}
  -	    }
  -	    
  -	    public void remove() {
  -		org.mozilla.javascript.Context.enter();
  -		try {
  -		    scope.delete(ids[index].toString());
  -		} finally {
  -		    org.mozilla.javascript.Context.exit();
  -		}
  -	    }
  -	}
  -	
  -	public Iterator getIterator(Object obj, Info i)
  -	    throws Exception {
  -	    if (!(obj instanceof Scriptable)) {
  -		return super.getIterator(obj, i);
  -	    }
  -	    if (obj instanceof NativeArray) {
  -		return new NativeArrayIterator((NativeArray)obj);
  -	    }
  -	    return new ScriptableIterator((Scriptable)obj);
  -	}
  -	
  -	public VelMethod getMethod(Object obj, String methodName, 
  -				   Object[] args, Info i)
  -	    throws Exception {
  -	    if (!(obj instanceof Scriptable)) {
  -		return super.getMethod(obj, methodName, args, i);
  -	    }
  -	    return new JSMethod((Scriptable)obj, methodName);
  -	}
  -	
  -	public VelPropertyGet getPropertyGet(Object obj, String identifier, 
  -					     Info i)
  -	    throws Exception {
  -	    if (!(obj instanceof Scriptable)) {
  -		return super.getPropertyGet(obj, identifier, i);
  -	    }
  -	    return new JSPropertyGet((Scriptable)obj, identifier);
  -	}
  -	
  -	public VelPropertySet getPropertySet(Object obj, String identifier, 
  -					     Object arg, Info i)
  -	    throws Exception {
  -	    if (!(obj instanceof Scriptable)) {
  -		return super.getPropertySet(obj, identifier, arg, i);
  -	    }
  -	    return new JSPropertySet((Scriptable)obj, identifier);
  -	}
  +        
  +        public static class JSMethod implements VelMethod {
  +            
  +            Scriptable scope;
  +            String name;
  +            
  +            public JSMethod(Scriptable scope, String name) {
  +                this.scope = scope;
  +                this.name = name;
  +            }
  +            
  +            public Object invoke(Object thisArg, Object[] args)
  +                throws Exception {
  +                org.mozilla.javascript.Context cx = org.mozilla.javascript.Context.enter();
  +                try {
  +                    Object result; 
  +                    Scriptable thisObj;
  +                    if (!(thisArg instanceof Scriptable)) {
  +                        thisObj = org.mozilla.javascript.Context.toObject(thisArg, scope);
  +                    } else {
  +                        thisObj = (Scriptable)thisArg;
  +                    }
  +                    result = ScriptableObject.getProperty(thisObj, name);
  +                    Object[] newArgs = null;
  +                    if (args != null) {
  +                        newArgs = new Object[args.length];
  +                        for (int i = 0; i < args.length; i++) {
  +                            newArgs[i] = args[i];
  +                            if (args[i] != null && 
  +                                !(args[i] instanceof Number) &&
  +                                !(args[i] instanceof Boolean) &&
  +                                !(args[i] instanceof String) &&
  +                                !(args[i] instanceof Scriptable)) {
  +                                newArgs[i] = org.mozilla.javascript.Context.toObject(args[i],
scope);
  +                            }
  +                        }
  +                    }
  +                    result = ScriptRuntime.call(cx, result, thisObj, 
  +                                                newArgs, scope);
  +                    if (result == Undefined.instance ||
  +                        result == ScriptableObject.NOT_FOUND) {
  +                        result = null;
  +                    } else while (result instanceof Wrapper) {
  +                        result = ((Wrapper)result).unwrap();
  +                    }
  +                    return result;
  +                } catch (JavaScriptException e) {
  +                    throw new java.lang.reflect.InvocationTargetException(e);
  +                } finally {
  +                    org.mozilla.javascript.Context.exit();
  +                }
  +            }
  +            
  +            public boolean isCacheable() {
  +                return false;
  +            }
  +            
  +            public String getMethodName() {
  +                return name;
  +            }
  +            
  +            public Class getReturnType() {
  +                return Object.class;
  +            }
  +            
  +        }
  +        
  +        public static class JSPropertyGet implements VelPropertyGet {
  +            
  +            Scriptable scope;
  +            String name;
  +            
  +            public JSPropertyGet(Scriptable scope, String name) {
  +                this.scope = scope;
  +                this.name = name;
  +            }
  +            
  +            public Object invoke(Object thisArg) throws Exception {
  +                org.mozilla.javascript.Context.enter();
  +                try {
  +                    Scriptable thisObj;
  +                    if (!(thisArg instanceof Scriptable)) {
  +                        thisObj = org.mozilla.javascript.Context.toObject(thisArg, scope);
  +                    } else {
  +                        thisObj = (Scriptable)thisArg;
  +                    }
  +                    Object result = ScriptableObject.getProperty(thisObj, name);
  +                    if (result == Undefined.instance || 
  +                        result == ScriptableObject.NOT_FOUND) {
  +                        result = null;
  +                    } else while (result instanceof Wrapper) {
  +                        result = ((Wrapper)result).unwrap();
  +                    }
  +                    return result;
  +                } finally {
  +                    org.mozilla.javascript.Context.exit();
  +                }
  +            }
  +            
  +            public boolean isCacheable() {
  +                return false;
  +            }
  +            
  +            public String getMethodName() {
  +                return name;
  +            }
  +            
  +        }
  +        
  +        public static class JSPropertySet implements VelPropertySet {
  +            
  +            Scriptable scope;
  +            String name;
  +            
  +            public JSPropertySet(Scriptable scope, String name) {
  +                this.scope = scope;
  +                this.name = name;
  +            }
  +            
  +            public Object invoke(Object thisArg, Object rhs) throws Exception {
  +                org.mozilla.javascript.Context.enter();
  +                try {
  +                    Scriptable thisObj;
  +                    Object arg = rhs;
  +                    if (!(thisArg instanceof Scriptable)) {
  +                        thisObj = org.mozilla.javascript.Context.toObject(thisArg, scope);
  +                    } else {
  +                        thisObj = (Scriptable)thisArg;
  +                    }
  +                    if (arg != null && 
  +                        !(arg instanceof Number) &&
  +                        !(arg instanceof Boolean) &&
  +                        !(arg instanceof String) &&
  +                        !(arg instanceof Scriptable)) {
  +                        arg = org.mozilla.javascript.Context.toObject(arg, scope);
  +                    }
  +                    ScriptableObject.putProperty(thisObj, name, arg);
  +                    return rhs;
  +                } finally {
  +                    org.mozilla.javascript.Context.exit();
  +                }
  +            }
  +            
  +            public boolean isCacheable() {
  +                return false;
  +            }
  +            
  +            public String getMethodName() {
  +                return name;        
  +            }
  +        }
  +        
  +        public static class NativeArrayIterator implements Iterator {
  +            
  +            NativeArray arr;
  +            int index;
  +            
  +            public NativeArrayIterator(NativeArray arr) {
  +                this.arr = arr;
  +                this.index = 0;
  +            }
  +            
  +            public boolean hasNext() {
  +                return index < (int)arr.jsGet_length();
  +            }
  +            
  +            public Object next() {
  +                org.mozilla.javascript.Context.enter();
  +                try {
  +                    Object result = arr.get(index++, arr);
  +                    if (result == Undefined.instance ||
  +                        result == ScriptableObject.NOT_FOUND) {
  +                        result = null;
  +                    } else while (result instanceof Wrapper) {
  +                        result = ((Wrapper)result).unwrap();
  +                    }
  +                    return result;
  +                } finally {
  +                    org.mozilla.javascript.Context.exit();
  +                }
  +            }
  +            
  +            public void remove() {
  +                arr.delete(index);
  +            }
  +        }
  +        
  +        public static class ScriptableIterator implements Iterator {
  +            
  +            Scriptable scope;
  +            Object[] ids;
  +            int index;
  +            
  +            public ScriptableIterator(Scriptable scope) {
  +                this.scope = scope;
  +                this.ids = scope.getIds();
  +                this.index = 0;
  +            }
  +            
  +            public boolean hasNext() {
  +                return index < ids.length;
  +            }
  +            
  +            public Object next() {
  +                org.mozilla.javascript.Context.enter();
  +                try {
  +                    Object result = 
  +                        ScriptableObject.getProperty(scope, 
  +                                                     ids[index++].toString());
  +                    if (result == Undefined.instance ||
  +                        result == ScriptableObject.NOT_FOUND) {
  +                        result = null;
  +                    } else while (result instanceof Wrapper) {
  +                        result = ((Wrapper)result).unwrap();
  +                    }
  +                    return result;
  +                } finally {
  +                    org.mozilla.javascript.Context.exit();
  +                }
  +            }
  +            
  +            public void remove() {
  +                org.mozilla.javascript.Context.enter();
  +                try {
  +                    scope.delete(ids[index].toString());
  +                } finally {
  +                    org.mozilla.javascript.Context.exit();
  +                }
  +            }
  +        }
  +        
  +        public Iterator getIterator(Object obj, Info i)
  +            throws Exception {
  +            if (!(obj instanceof Scriptable)) {
  +                return super.getIterator(obj, i);
  +            }
  +            if (obj instanceof NativeArray) {
  +                return new NativeArrayIterator((NativeArray)obj);
  +            }
  +            return new ScriptableIterator((Scriptable)obj);
  +        }
  +        
  +        public VelMethod getMethod(Object obj, String methodName, 
  +                                   Object[] args, Info i)
  +            throws Exception {
  +            if (!(obj instanceof Scriptable)) {
  +                return super.getMethod(obj, methodName, args, i);
  +            }
  +            return new JSMethod((Scriptable)obj, methodName);
  +        }
  +        
  +        public VelPropertyGet getPropertyGet(Object obj, String identifier, 
  +                                             Info i)
  +            throws Exception {
  +            if (!(obj instanceof Scriptable)) {
  +                return super.getPropertyGet(obj, identifier, i);
  +            }
  +            return new JSPropertyGet((Scriptable)obj, identifier);
  +        }
  +        
  +        public VelPropertySet getPropertySet(Object obj, String identifier, 
  +                                             Object arg, Info i)
  +            throws Exception {
  +            if (!(obj instanceof Scriptable)) {
  +                return super.getPropertySet(obj, identifier, arg, i);
  +            }
  +            return new JSPropertySet((Scriptable)obj, identifier);
  +        }
       }
   
       /**
  @@ -552,6 +741,7 @@
       final private static String CONTEXT_SOURCE_CACHE_KEY = "source-cache";
   
       private VelocityEngine tmplEngine;
  +    private boolean tmplEngineInitialized;
       private DefaultContext resolverContext;
       private Context velocityContext;
       private boolean activeFlag;
  @@ -637,7 +827,7 @@
        * @see org.apache.avalon.framework.activity.Initializable#initialize
        */
       public void initialize() throws Exception {
  -        this.tmplEngine.init();
  +        //this.tmplEngine.init();
       }
   
       /**
  @@ -657,128 +847,138 @@
   
           // FIXME: Initialize the Velocity context. Use objectModel to pass these
           final Object bean = ((Environment) resolver).getAttribute("bean-dict");
  -        final WebContinuation kont =
  +        if (bean != null) {
  +            final WebContinuation kont =
                   (WebContinuation) ((Environment) resolver).getAttribute("kont");
  -
  -        // This velocity context provides two variables: "this" which represents the
  -        // bean object passed to sendPage*() and "continuation" which is the
  -        // current continuation. The immediate properties of the bean object are
  -        // also available in the context.
  -        //
  -        // Hack? I use JXPath to determine the properties of the bean object
  -        final JXPathBeanInfo bi = JXPathIntrospector.getBeanInfo(bean.getClass());
  -        DynamicPropertyHandler h = null;
  -        final PropertyDescriptor[] props;
  -        if (bi.isDynamic()) {
  -            Class cl = bi.getDynamicPropertyHandlerClass();
  -            try {
  -                h = (DynamicPropertyHandler) cl.newInstance();
  -            } catch (Exception exc) {
  -                exc.printStackTrace();
  +            
  +            // This velocity context provides two variables: "this" which represents the
  +            // bean object passed to sendPage*() and "continuation" which is the
  +            // current continuation. The immediate properties of the bean object are
  +            // also available in the context.
  +            //
  +            // Hack? I use JXPath to determine the properties of the bean object
  +            final JXPathBeanInfo bi = JXPathIntrospector.getBeanInfo(bean.getClass());
  +            DynamicPropertyHandler h = null;
  +            final PropertyDescriptor[] props;
  +            if (bi.isDynamic()) {
  +                Class cl = bi.getDynamicPropertyHandlerClass();
  +                try {
  +                    h = (DynamicPropertyHandler) cl.newInstance();
  +                } catch (Exception exc) {
  +                    exc.printStackTrace();
  +                    h = null;
  +                }
  +                props = null;
  +            } else {
                   h = null;
  +                props = bi.getPropertyDescriptors();
               }
  -            props = null;
  -        } else {
  -            h = null;
  -            props = bi.getPropertyDescriptors();
  -        }
  -        final DynamicPropertyHandler handler = h;
  -
  -        this.velocityContext = new Context() {
  -            public Object put(String key, Object value) {
  -                if (key.equals("this") || key.equals("continuation")) {
  -                    return value;
  -                }
  -                if (handler != null) {
  -                    handler.setProperty(bean, key, value);
  -                    return value;
  -                } else {
  -                    for (int i = 0; i < props.length; i++) {
  -                        if (props[i].getName().equals(key)) {
  -                            try {
  -                                return props[i].getWriteMethod().invoke(bean, new Object[]{value});
  -                            } catch (Exception ignored) {
  -                                break;
  +            final DynamicPropertyHandler handler = h;
  +            
  +            this.velocityContext = new Context() {
  +                    public Object put(String key, Object value) {
  +                        if (key.equals("flowContext") 
  +                            || key.equals("continuation")) {
  +                            return value;
  +                        }
  +                        if (handler != null) {
  +                            handler.setProperty(bean, key, value);
  +                            return value;
  +                        } else {
  +                            for (int i = 0; i < props.length; i++) {
  +                                if (props[i].getName().equals(key)) {
  +                                    try {
  +                                        return props[i].getWriteMethod().invoke(bean, new
Object[]{value});
  +                                    } catch (Exception ignored) {
  +                                        break;
  +                                    }
  +                                }
                               }
  +                            return value;
                           }
                       }
  -                    return value;
  -                }
  -            }
  -
  -            public boolean containsKey(Object key) {
  -                if (key.equals("this") || key.equals("continuation")) {
  -                    return true;
  -                }
  -                if (handler != null) {
  -                    String[] result = handler.getPropertyNames(bean);
  -                    for (int i = 0; i < result.length; i++) {
  -                        if (key.equals(result[i])) {
  +                    
  +                    public boolean containsKey(Object key) {
  +                        if (key.equals("flowContext") 
  +                            || key.equals("continuation")) {
                               return true;
                           }
  +                        if (handler != null) {
  +                            String[] result = handler.getPropertyNames(bean);
  +                            for (int i = 0; i < result.length; i++) {
  +                                if (key.equals(result[i])) {
  +                                    return true;
  +                                }
  +                            }
  +                        } else {
  +                            for (int i = 0; i < props.length; i++) {
  +                                if (key.equals(props[i].getName())) {
  +                                    return true;
  +                                }
  +                            }
  +                        }
  +                        return false;
                       }
  -                } else {
  -                    for (int i = 0; i < props.length; i++) {
  -                        if (key.equals(props[i].getName())) {
  -                            return true;
  +                    
  +                    public Object[] getKeys() {
  +                        Object[] result = null;
  +                        if (handler != null) {
  +                            result = handler.getPropertyNames(bean);
  +                        } else {
  +                            result = new Object[props.length];
  +                            for (int i = 0; i < props.length; i++) {
  +                                result[i] = props[i].getName();
  +                            }
                           }
  +                        Set set = new HashSet();
  +                        for (int i = 0; i < result.length; i++) {
  +                            set.add(result[i]);
  +                        }
  +                        set.add("flowContext");
  +                        set.add("continuation");
  +                        result = new Object[set.size()];
  +                        set.toArray(result);
  +                        return result;
                       }
  -                }
  -                return false;
  -            }
  -
  -            public Object[] getKeys() {
  -                Object[] result = null;
  -                if (handler != null) {
  -                    result = handler.getPropertyNames(bean);
  -                } else {
  -                    result = new Object[props.length];
  -                    for (int i = 0; i < props.length; i++) {
  -                        result[i] = props[i].getName();
  -                    }
  -                }
  -                Set set = new HashSet();
  -                for (int i = 0; i < result.length; i++) {
  -                    set.add(result[i]);
  -                }
  -                set.add("this");
  -                set.add("continuation");
  -                result = new Object[set.size()];
  -                set.toArray(result);
  -                return result;
  -            }
  -
  -            public Object get(String key) {
  -                if (key.equals("this")) {
  -                    return bean;
  -                }
  -                if (key.equals("continuation")) {
  -                    return kont;
  -                }
  -                if (handler != null) {
  -                    return handler.getProperty(bean, key.toString());
  -                } else {
  -                    for (int i = 0; i < props.length; i++) {
  -                        if (props[i].getName().equals(key)) {
  -                            try {
  -                                return props[i].getReadMethod().invoke(bean, null);
  -                            } catch (Exception ignored) {
  -                                break;
  +                    
  +                    public Object get(String key) {
  +                        if (key.equals("flowContext")) {
  +                            return bean;
  +                        }
  +                        if (key.equals("continuation")) {
  +                            return kont;
  +                        }
  +                        if (handler != null) {
  +                            return handler.getProperty(bean, key.toString());
  +                        } else {
  +                            for (int i = 0; i < props.length; i++) {
  +                                if (props[i].getName().equals(key)) {
  +                                    try {
  +                                        return props[i].getReadMethod().invoke(bean, null);
  +                                    } catch (Exception ignored) {
  +                                        break;
  +                                    }
  +                                }
                               }
  +                            return null;
                           }
                       }
  -                    return null;
  -                }
  -            }
  -
  -            public Object remove(Object key) {
  -                // not implemented
  -                return key;
  -            }
  -        };
  +                    
  +                    public Object remove(Object key) {
  +                        // not implemented
  +                        return key;
  +                    }
  +                };
  +        }
  +        this.velocityContext = 
  +            new ChainedContext (this.velocityContext, 
  +                                ObjectModelHelper.getRequest(objectModel), 
  +                                ObjectModelHelper.getResponse(objectModel), 
  +                                ObjectModelHelper.getContext(objectModel),
  +                                params);
  +        this.velocityContext.put("template", src);
           this.activeFlag = true;
       }
  -
       /**
        * Free up the VelocityContext associated with the pipeline, and
        * release any Source objects resolved by the resource loader.
  @@ -820,7 +1020,10 @@
               if (getLogger().isDebugEnabled()) {
                   getLogger().debug("Processing File: " + super.source);
               }
  -
  +            if (!tmplEngineInitialized) {
  +                tmplEngine.init();
  +                tmplEngineInitialized = true;
  +            }
               /* lets render a template */
               this.tmplEngine.mergeTemplate(super.source, velocityContext, w);
   
  @@ -847,8 +1050,8 @@
                   }
                   message += lineStr + "\n";
               }
  -            String columnIndicator = "";
               if (column > 0) {
  +                String columnIndicator = "";
                   for (int i = 1; i < column; i++) {
                       columnIndicator += " ";
                   }
  
  
  

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