[Adapdev-commits] Adapdev/src/Adapdev.NVelocity/Context AbstractContext.cs,1.2,1.3 IContext.cs,1.2,1.3 InternalContextAdapter.cs,1.2,1.3 InternalContextAdapterImpl.cs,1.2,1.3 InternalContextBase.cs,1.2,1.3 InternalEventContext.cs,1.2,1.3 InternalHousekeepingContext.cs,1.2,1.3 InternalWrapperContext.cs,1.2,1.3 VMContext.cs,1.2,1.3

[Sean M. <int...@us...>]

Update of /cvsroot/adapdev/Adapdev/src/Adapdev.NVelocity/Context
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv22005/src/Adapdev.NVelocity/Context

Added Files:
	AbstractContext.cs IContext.cs InternalContextAdapter.cs 
	InternalContextAdapterImpl.cs InternalContextBase.cs 
	InternalEventContext.cs InternalHousekeepingContext.cs 
	InternalWrapperContext.cs VMContext.cs 
Log Message:


--- NEW FILE: InternalEventContext.cs ---
namespace NVelocity.Context
{
	using NVelocity.App.Events;

	/// <summary>
	/// Interface for event support.  Note that this is a public internal
	/// interface, as it is something that will be accessed from outside 
	/// of the .context package.
	/// </summary>
	public interface InternalEventContext
	{
		EventCartridge EventCartridge { get; }

		EventCartridge AttachEventCartridge(EventCartridge ec);

	}
}
--- NEW FILE: InternalContextBase.cs ---
namespace NVelocity.Context
{
	using System;
	using System.Collections;
	using NVelocity.App.Events;
	using NVelocity.Runtime.Resource;
	using NVelocity.Util.Introspection;

	/// <summary>  class to encapsulate the 'stuff' for internal operation of velocity.  
	/// We use the context as a thread-safe storage : we take advantage of the
	/// fact that it's a visitor  of sorts  to all nodes (that matter) of the 
	/// AST during init() and render().
	/// Currently, it carries the template name for namespace
	/// support, as well as node-local context data introspection caching.
	/// *
	/// Note that this is not a public class.  It is for package access only to
	/// keep application code from accessing the internals, as AbstractContext
	/// is derived from this.
	/// *
	/// </summary>
	/// <author> <a href="mailto:ge...@op...">Geir Magnusson Jr.</a>
	/// </author>
	/// <version> $Id: InternalContextBase.cs,v 1.3 2005/11/16 05:45:22 intesar66 Exp $
	/// 
	/// </version>
	[Serializable]

	public class InternalContextBase : InternalHousekeepingContext, InternalEventContext
	{ //, System.Runtime.Serialization.ISerializable {
		public InternalContextBase()
		{
			InitBlock();
		}

		private void InitBlock()
		{
			introspectionCache = new Hashtable(33);
			templateNameStack = new Stack();
		}

		public virtual String CurrentTemplateName
		{
			get
			{
				if ((templateNameStack.Count == 0))
					return "<undef>";
				else
					return (String) templateNameStack.Peek();
			}

		}

		public virtual Object[] TemplateNameStack
		{
			get { return templateNameStack.ToArray(); }

		}

		public virtual Resource CurrentResource
		{
			get { return currentResource; }

			set { currentResource = value; }

		}

		public virtual EventCartridge EventCartridge
		{
			get { return eventCartridge; }

		}

		/// <summary>  cache for node/context specific introspection information
		/// </summary>
		//UPGRADE_NOTE: The initialization of  'introspectionCache' was moved to method 'InitBlock'. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1005"'
		private Hashtable introspectionCache;

		/// <summary>  Template name stack. The stack top contains the current template name.
		/// </summary>
		//UPGRADE_NOTE: The initialization of  'templateNameStack' was moved to method 'InitBlock'. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1005"'
		private Stack templateNameStack;

		/// <summary>  EventCartridge we are to carry.  Set by application
		/// </summary>
		private EventCartridge eventCartridge = null;

		/// <summary>  Current resource - used for carrying encoding and other
		/// information down into the rendering process
		/// </summary>
		private Resource currentResource = null;

		/// <summary>  set the current template name on top of stack
		/// *
		/// </summary>
		/// <param name="s">current template name
		/// 
		/// </param>
		public virtual void PushCurrentTemplateName(String s)
		{
			Object temp_object;
			temp_object = s;
			Object generatedAux = temp_object;
			templateNameStack.Push(temp_object);
			return;
		}

		/// <summary>  remove the current template name from stack
		/// </summary>
		public virtual void PopCurrentTemplateName()
		{
			templateNameStack.Pop();
			return;
		}

		/// <summary>  get the current template name
		/// *
		/// </summary>
		/// <returns>String current template name
		/// 
		/// </returns>
		/// <summary>  get the current template name stack
		/// *
		/// </summary>
		/// <returns>Object[] with the template name stack contents.
		/// 
		/// </returns>
		/// <seealso cref=" IntrospectionCacheData)
		/// object if exists for the key
		/// *
		/// "/>
		/// <param name="key"> key to find in cache
		/// </param>
		/// <returns>cache object
		/// 
		/// </returns>
		public virtual IntrospectionCacheData ICacheGet(Object key)
		{
			return (IntrospectionCacheData) introspectionCache[key];
		}

		/// <seealso cref=" IntrospectionCacheData)
		/// element in the cache for specified key
		/// *
		/// "/>
		/// <param name="key"> key 
		/// </param>
		/// <param name="o"> IntrospectionCacheData object to place in cache
		/// 
		/// </param>
		public virtual void ICachePut(Object key, IntrospectionCacheData o)
		{
			introspectionCache[key] = o;
		}


		public virtual EventCartridge AttachEventCartridge(EventCartridge ec)
		{
			EventCartridge temp = eventCartridge;

			eventCartridge = ec;

			return temp;
		}

	}
}
--- NEW FILE: InternalWrapperContext.cs ---
namespace NVelocity.Context
{
	/// <summary>
	/// interface for internal context wrapping functionality
	/// </summary>
	/// <author> <a href="mailto:ge...@op...">Geir Magnusson Jr.</a></author>
	/// <version> $Id: InternalWrapperContext.cs,v 1.3 2005/11/16 05:45:22 intesar66 Exp $ </version>
	public interface InternalWrapperContext
	{
		/// <summary>
		/// returns the wrapped user context 
		/// </summary>
		IContext InternalUserContext { get; }

		/// <summary>
		/// returns the base full context impl 
		/// </summary>
		InternalContextAdapter BaseContext { get; }

	}
}
--- NEW FILE: AbstractContext.cs ---
namespace NVelocity.Context
{
	using System;

	/// <summary>  This class is the abstract base class for all conventional 
	/// Velocity Context  implementations.  Simply extend this class 
	/// and implement the abstract routines that access your preferred 
	/// storage method.
	/// *
	/// Takes care of context chaining.
	/// *
	/// Also handles / enforces policy on null keys and values :
	/// *
	/// <ul>
	/// <li> Null keys and values are accepted and basically dropped.
	/// <li> If you place an object into the context with a null key, it
	/// will be ignored and logged.
	/// <li> If you try to place a null into the context with any key, it
	/// will be dropped and logged.
	/// </ul>
	/// *
	/// The default implementation of this for application use is 
	/// org.apache.velocity.VelocityContext.
	/// *
	/// All thanks to Fedor for the chaining idea.
	/// *
	/// </summary>
	/// <author> <a href="mailto:ge...@op...">Geir Magnusson Jr.</a>
	/// </author>
	/// <author> <a href="mailto:fed...@ho...">Fedor Karpelevitch</a>
	/// </author>
	/// <author> <a href="mailto:jv...@ap...">Jason van Zyl</a>
	/// </author>
	/// <version> $Id: AbstractContext.cs,v 1.3 2005/11/16 05:45:22 intesar66 Exp $
	/// 
	/// </version>
	[Serializable]
	public abstract class AbstractContext : InternalContextBase, IContext
	{ //, System.Runtime.Serialization.ISerializable

		public virtual Object[] Keys
		{
			get { return InternalGetKeys(); }

		}

		public virtual IContext ChainedContext
		{
			get { return innerContext; }

		}

		/// <summary>  the chained Context if any
		/// </summary>
		private IContext innerContext = null;

		/// 
		/// <summary>  Implement to return a value from the context storage. 
		/// <br><br>
		/// The implementation of this method is required for proper
		/// operation of a Context implementation in general
		/// Velocity use.
		/// 
		/// </summary>
		/// <param name="key">key whose associated value is to be returned
		/// </param>
		/// <returns>object stored in the context
		/// 
		/// </returns>
		public abstract Object InternalGet(String key);

		/// 
		/// <summary>  Implement to put a value into the context storage.
		/// <br><br>
		/// The implementation of this method is required for 
		/// proper operation of a Context implementation in
		/// general Velocity use.
		/// *
		/// </summary>
		/// <param name="key">key with which to associate the value
		/// </param>
		/// <param name="value">value to be associated with the key
		/// </param>
		/// <returns>previously stored value if exists, or null
		/// 
		/// </returns>
		public abstract Object InternalPut(String key, Object value_Renamed);

		/// 
		/// <summary>  Implement to determine if a key is in the storage.
		/// <br><br>
		/// Currently, this method is not used internally by 
		/// the Velocity core. 
		/// *
		/// </summary>
		/// <param name="key">key to test for existance 
		/// </param>
		/// <returns>true if found, false if not
		/// 
		/// </returns>
		public abstract bool InternalContainsKey(Object key);

		/// 
		/// <summary>  Implement to return an object array of key 
		/// strings from your storage.
		/// <br><br>
		/// Currently, this method is not used internally by
		/// the Velocity core.
		/// *
		/// </summary>
		/// <returns>array of keys
		/// 
		/// </returns>
		public abstract Object[] InternalGetKeys();

		/// 
		/// <summary>  I mplement to remove an item from your storage.
		/// <br><br>
		/// Currently, this method is not used internally by
		/// the Velocity core.
		/// *
		/// </summary>
		/// <param name="key">key to remove
		/// </param>
		/// <returns>object removed if exists, else null
		/// 
		/// </returns>
		public abstract Object InternalRemove(Object key);

		/// <summary>  default CTOR
		/// </summary>
		public AbstractContext()
		{
		}

		/// <summary>  Chaining constructor accepts a Context argument.
		/// It will relay get() operations into this Context
		/// in the even the 'local' get() returns null.
		/// 
		/// </summary>
		/// <param name="inner">context to be chained
		/// 
		/// </param>
		public AbstractContext(IContext inner)
		{
			innerContext = inner;

			/*
	    *  now, do a 'forward pull' of event cartridge so
	    *  it's accessable, bringing to the top level.
	    */

			if (innerContext is InternalEventContext)
			{
				AttachEventCartridge(((InternalEventContext) innerContext).EventCartridge);
			}
		}

		/// <summary> Adds a name/value pair to the context. 
		/// 
		/// </summary>
		/// <param name="key">  The name to key the provided value with.
		/// </param>
		/// <param name="value">The corresponding value.
		/// </param>
		/// <returns>Object that was replaced in the the Context if
		/// applicable or null if not.
		/// 
		/// </returns>
		public virtual Object Put(String key, Object value_Renamed)
		{
			/*
	    * don't even continue if key or value is null
	    */

			if (key == null)
			{
				return null;
			}
			else if (value_Renamed == null)
			{
				return null;
			}

			return InternalPut(key, value_Renamed);
		}

		/// <summary>  Gets the value corresponding to the provided key from the context.
		/// *
		/// Supports the chaining context mechanism.  If the 'local' context
		/// doesn't have the value, we try to get it from the chained context.
		/// *
		/// </summary>
		/// <param name="key">The name of the desired value.
		/// </param>
		/// <returns>   The value corresponding to the provided key or null if
		/// the key param is null.
		/// 
		/// </returns>
		public virtual Object Get(String key)
		{
			/*
			*  punt if key is null
			*/

			if (key == null)
			{
				return null;
			}

			/*
			*  get the object for this key.  If null, and we are chaining another Context
			*  call the get() on it.
			*/

			Object o = InternalGet(key);

			if (o == null && innerContext != null)
			{
				o = innerContext.Get(key);
			}

			return o;
		}

		/// <summary>  Indicates whether the specified key is in the context.  Provided for 
		/// debugging purposes.
		/// *
		/// </summary>
		/// <param name="key">The key to look for.
		/// </param>
		/// <returns>true if the key is in the context, false if not.
		/// 
		/// </returns>
		public virtual bool ContainsKey(Object key)
		{
			if (key == null)
			{
				return false;
			}

			return InternalContainsKey(key);
		}

		/// <summary>  Get all the keys for the values in the context
		/// </summary>
		/// <returns>Object[] of keys in the Context. Does not return
		/// keys in chained context.
		/// 
		/// </returns>
		/// <summary> Removes the value associated with the specified key from the context.
		/// *
		/// </summary>
		/// <param name="key">The name of the value to remove.
		/// </param>
		/// <returns>   The value that the key was mapped to, or <code>null</code> 
		/// if unmapped.
		/// 
		/// </returns>
		public virtual Object Remove(Object key)
		{
			if (key == null)
			{
				return null;
			}

			return InternalRemove(key);
		}

		/// <summary>  returns innerContext if one is chained
		/// *
		/// </summary>
		/// <returns>Context if chained, <code>null</code> if not
		/// 
		/// </returns>
	}
}
--- NEW FILE: InternalContextAdapterImpl.cs ---
namespace NVelocity.Context
{
	using System;
	using NVelocity.App.Events;
	using NVelocity.Runtime.Resource;
	using NVelocity.Util.Introspection;

	/// <summary>  This adapter class is the container for all context types for internal
	/// use.  The AST now uses this class rather than the app-level Context
	/// interface to allow flexibility in the future.
	/// *
	/// Currently, we have two context interfaces which must be supported :
	/// <ul>
	/// <li> Context : used for application/template data access
	/// <li> InternalHousekeepingContext : used for internal housekeeping and caching
	/// <li> InternalWrapperContext : used for getting root cache context and other
	/// such.
	/// <li> InternalEventContext : for event handling.
	/// </ul>
	/// *
	/// This class implements the two interfaces to ensure that all methods are 
	/// supported.  When adding to the interfaces, or adding more context 
	/// functionality, the interface is the primary definition, so alter that first
	/// and then all classes as necessary.  As of this writing, this would be 
	/// the only class affected by changes to InternalContext
	/// *
	/// This class ensures that an InternalContextBase is available for internal
	/// use.  If an application constructs their own Context-implementing
	/// object w/o subclassing AbstractContext, it may be that support for
	/// InternalContext is not available.  Therefore, InternalContextAdapter will
	/// create an InternalContextBase if necessary for this support.  Note that 
	/// if this is necessary, internal information such as node-cache data will be
	/// lost from use to use of the context.  This may or may not be important,
	/// depending upon application.
	/// 
	/// *
	/// </summary>
	/// <author> <a href="mailto:ge...@op...">Geir Magnusson Jr.</a>
	/// </author>
	/// <version> $Id: InternalContextAdapterImpl.cs,v 1.3 2005/11/16 05:45:22 intesar66 Exp $
	/// 
	/// </version>
	//TODO: class was sealed
	public class InternalContextAdapterImpl : InternalContextAdapter
	{
		public virtual String CurrentTemplateName
		{
			get { return icb.CurrentTemplateName; }

		}

		public virtual Object[] TemplateNameStack
		{
			get { return icb.TemplateNameStack; }

		}

		public virtual Resource CurrentResource
		{
			get { return icb.CurrentResource; }

			set { icb.CurrentResource = value; }

		}

		public virtual Object[] Keys
		{
			get { return context.Keys; }

		}

		public virtual IContext InternalUserContext
		{
			get { return context; }

		}

		public virtual InternalContextAdapter BaseContext
		{
			get { return this; }

		}

		public virtual EventCartridge EventCartridge
		{
			get
			{
				if (iec != null)
				{
					return iec.EventCartridge;
				}

				return null;
			}

		}

		/// 
		/// <summary>  the user data Context that we are wrapping 
		/// </summary>
		internal IContext context = null;

		/// 
		/// <summary>  the ICB we are wrapping.  We may need to make one
		/// if the user data context implementation doesn't
		/// support one.  The default AbstractContext-derived
		/// VelocityContext does, and it's recommended that 
		/// people derive new contexts from AbstractContext
		/// rather than piecing things together
		/// </summary>
		internal InternalHousekeepingContext icb = null;

		/// <summary>  The InternalEventContext that we are wrapping.  If
		/// the context passed to us doesn't support it, no
		/// biggie.  We don't make it for them - since its a 
		/// user context thing, nothing gained by making one
		/// for them now
		/// </summary>
		internal InternalEventContext iec = null;

		/// <summary>  CTOR takes a Context and wraps it, delegating all 'data' calls 
		/// to it.
		/// 
		/// For support of internal contexts, it will create an InternalContextBase
		/// if need be.
		/// </summary>
		public InternalContextAdapterImpl(IContext c)
		{
			context = c;

			if (!(c is InternalHousekeepingContext))
			{
				icb = new InternalContextBase();
			}
			else
			{
				icb = (InternalHousekeepingContext) context;
			}

			if (c is InternalEventContext)
			{
				iec = (InternalEventContext) context;
			}
		}

		/* --- InternalHousekeepingContext interface methods --- */

		public void PushCurrentTemplateName(String s)
		{
			icb.PushCurrentTemplateName(s);
		}

		public void PopCurrentTemplateName()
		{
			icb.PopCurrentTemplateName();
		}


		public IntrospectionCacheData ICacheGet(Object key)
		{
			return icb.ICacheGet(key);
		}

		public void ICachePut(Object key, IntrospectionCacheData o)
		{
			icb.ICachePut(key, o);
		}


		/* ---  Context interface methods --- */

		public Object Put(String key, Object value_Renamed)
		{
			return context.Put(key, value_Renamed);
		}

		public Object Get(String key)
		{
			return context.Get(key);
		}

		public bool ContainsKey(Object key)
		{
			return context.ContainsKey(key);
		}


		public Object Remove(Object key)
		{
			return context.Remove(key);
		}


		/* ---- InternalWrapperContext --- */

		/// <summary>  returns the user data context that
		/// we are wrapping
		/// </summary>
		/// <summary>  Returns the base context that we are 
		/// wrapping. Here, its this, but for other thing
		/// like VM related context contortions, it can
		/// be something else
		/// </summary>
		/* -----  InternalEventContext ---- */
		public EventCartridge AttachEventCartridge(EventCartridge ec)
		{
			if (iec != null)
			{
				return iec.AttachEventCartridge(ec);
			}

			return null;
		}

	}
}
--- NEW FILE: VMContext.cs ---
namespace NVelocity.Context
{
	using System;
	using System.Collections;
	using NVelocity.App.Events;
	using NVelocity.Runtime;
	using NVelocity.Runtime.Directive;
	using NVelocity.Runtime.Resource;
	using NVelocity.Util.Introspection;

	/// <summary>  This is a special, internal-use-only context implementation to be
	/// used for the new Velocimacro implementation.
	/// *
	/// The main distinguishing feature is the management of the VMProxyArg objects
	/// in the put() and get() methods.
	/// *
	/// Further, this context also supports the 'VM local context' mode, where
	/// any get() or put() of references that aren't args to the VM are considered
	/// local to the vm, protecting the global context.
	/// 
	/// </summary>
	/// <author> <a href="mailto:ge...@op...">Geir Magnusson Jr.</a>
	/// </author>
	/// <version> $Id: VMContext.cs,v 1.3 2005/11/16 05:45:22 intesar66 Exp $ 
	/// 
	/// </version>
	public class VMContext : InternalContextAdapter
	{
		private void InitBlock()
		{
			vmproxyhash = new Hashtable();
			localcontext = new Hashtable();
		}

		public virtual IContext InternalUserContext
		{
			get { return innerContext.InternalUserContext; }

		}

		public virtual InternalContextAdapter BaseContext
		{
			get { return innerContext.BaseContext; }

		}

		public virtual Object[] Keys
		{
			get
			{
				// TODO
				//return vmproxyhash.keySet().toArray();
				throw new NotImplementedException();
			}

		}

		public virtual String CurrentTemplateName
		{
			get { return innerContext.CurrentTemplateName; }

		}

		public virtual Object[] TemplateNameStack
		{
			get { return innerContext.TemplateNameStack; }

		}

		public virtual EventCartridge EventCartridge
		{
			get { return innerContext.EventCartridge; }

		}

		public virtual Resource CurrentResource
		{
			get { return innerContext.CurrentResource; }

			set { innerContext.CurrentResource = value; }

		}

		/// <summary>container for our VMProxy Objects 
		/// </summary>
		//UPGRADE_NOTE: The initialization of  'vmproxyhash' was moved to method 'InitBlock'. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1005"'
		internal Hashtable vmproxyhash;

		/// <summary>container for any local or constant VMProxy items 
		/// </summary>
		//UPGRADE_NOTE: The initialization of  'localcontext' was moved to method 'InitBlock'. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1005"'
		internal Hashtable localcontext;

		/// <summary>the base context store.  This is the 'global' context 
		/// </summary>
		internal InternalContextAdapter innerContext = null;

		/// <summary>context that we are wrapping 
		/// </summary>
		internal InternalContextAdapter wrappedContext = null;

		/// <summary>support for local context scope feature, where all references are local 
		/// </summary>
		private bool localcontextscope = false;

		/// <summary>  CTOR, wraps an ICA
		/// </summary>
		public VMContext(InternalContextAdapter inner, RuntimeServices rsvc)
		{
			InitBlock();
			localcontextscope = rsvc.getBoolean(RuntimeConstants_Fields.VM_CONTEXT_LOCALSCOPE, false);

			wrappedContext = inner;
			innerContext = inner.BaseContext;
		}

		/// <summary>  return the inner / user context
		/// </summary>
		/// <summary>  Used to put VMProxyArgs into this context.  It separates
		/// the VMProxyArgs into constant and non-constant types
		/// pulling out the value of the constant types so they can
		/// be modified w/o damaging the VMProxyArg, and leaving the
		/// dynamic ones, as they modify context rather than their own
		/// state
		/// </summary>
		/// <param name="vmpa">VMProxyArg to add 
		/// 
		/// </param>
		public virtual void AddVMProxyArg(VMProxyArg vmpa)
		{
			/*
			*  ask if it's a constant : if so, get the value and put into the
			*  local context, otherwise, put the vmpa in our vmproxyhash
			*/

			String key = vmpa.ContextReference;

			if (vmpa.isConstant())
			{
				localcontext[key] = vmpa.getObject(wrappedContext);
			}
			else
			{
				vmproxyhash[key] = vmpa;
			}
		}

		/// <summary>  Impl of the Context.put() method. 
		/// *
		/// </summary>
		/// <param name="key">name of item to set
		/// </param>
		/// <param name="value">object to set to key
		/// </param>
		/// <returns>old stored object
		/// 
		/// </returns>
		public virtual Object Put(String key, Object value_Renamed)
		{
			/*
			*  first see if this is a vmpa
			*/

			VMProxyArg vmpa = (VMProxyArg) vmproxyhash[key];

			if (vmpa != null)
			{
				return vmpa.setObject(wrappedContext, value_Renamed);
			}
			else
			{
				if (localcontextscope)
				{
					/*
					*  if we have localcontextscope mode, then just 
					*  put in the local context
					*/

					return localcontext[key] = value_Renamed;
				}
				else
				{
					/*
					*  ok, how about the local context?
					*/

					if (localcontext.ContainsKey(key))
					{
						return localcontext[key] = value_Renamed;
					}
					else
					{
						/*
						* otherwise, let them push it into the 'global' context
						*/

						return innerContext.Put(key, value_Renamed);
					}
				}
			}
		}

		/// <summary>  Impl of the Context.gut() method. 
		/// *
		/// </summary>
		/// <param name="key">name of item to get
		/// </param>
		/// <returns> stored object or null
		/// 
		/// </returns>
		public virtual Object Get(String key)
		{
			/*
			* first, see if it's a VMPA
			*/

			Object o = null;

			VMProxyArg vmpa = (VMProxyArg) vmproxyhash[key];

			if (vmpa != null)
			{
				o = vmpa.getObject(wrappedContext);
			}
			else
			{
				if (localcontextscope)
				{
					/*
					* if we have localcontextscope mode, then just 
					* put in the local context
					*/

					o = localcontext[key];
				}
				else
				{
					/*
					*  try the local context
					*/

					o = localcontext[key];

					if (o == null)
					{
						/*
						* last chance
						*/

						o = innerContext.Get(key);
					}
				}
			}

			return o;
		}

		/// <summary>  not yet impl
		/// </summary>
		public virtual bool ContainsKey(Object key)
		{
			return false;
		}

		/// <summary>  impl badly
		/// </summary>
		/// <summary>  impl badly
		/// </summary>
		public virtual Object Remove(Object key)
		{
			Object o = vmproxyhash[key];
			vmproxyhash.Remove(key);
			return o;
		}

		public virtual void PushCurrentTemplateName(String s)
		{
			innerContext.PushCurrentTemplateName(s);
		}

		public virtual void PopCurrentTemplateName()
		{
			innerContext.PopCurrentTemplateName();
		}


		public virtual IntrospectionCacheData ICacheGet(Object key)
		{
			return innerContext.ICacheGet(key);
		}

		public virtual void ICachePut(Object key, IntrospectionCacheData o)
		{
			innerContext.ICachePut(key, o);
		}

		public virtual EventCartridge AttachEventCartridge(EventCartridge ec)
		{
			return innerContext.AttachEventCartridge(ec);
		}


	}
}
--- NEW FILE: InternalContextAdapter.cs ---
namespace NVelocity.Context
{
	/// <summary>  interface to bring all necessary internal and user contexts together.
	/// this is what the AST expects to deal with.  If anything new comes
	/// along, add it here.
	/// *
	/// I will rename soon :)
	/// *
	/// </summary>
	/// <author> <a href="mailto:ge...@op...">Geir Magnusson Jr.</a>
	/// </author>
	/// <version> $Id: InternalContextAdapter.cs,v 1.3 2005/11/16 05:45:22 intesar66 Exp $
	/// 
	/// </version>
	public interface InternalContextAdapter : InternalHousekeepingContext, IContext, InternalWrapperContext, InternalEventContext
	{
	}
}
--- NEW FILE: InternalHousekeepingContext.cs ---
namespace NVelocity.Context
{
	using System;
	using NVelocity.Runtime.Resource;
	using NVelocity.Util.Introspection;

	/// <summary>
	/// interface to encapsulate the 'stuff' for internal operation of velocity.  
	/// We use the context as a thread-safe storage : we take advantage of the
	/// fact that it's a visitor  of sorts  to all nodes (that matter) of the 
	/// AST during init() and render().
	/// 
	/// Currently, it carries the template name for namespace
	/// support, as well as node-local context data introspection caching.
	/// </summary>
	/// <author> <a href="mailto:ge...@op...">Geir Magnusson Jr.</a></author>
	/// <author> <a href="mailto:Chr...@dl...">Christoph Reck</a></author>
	/// <version> $Id: InternalHousekeepingContext.cs,v 1.3 2005/11/16 05:45:22 intesar66 Exp $</version>
	public interface InternalHousekeepingContext
	{
		String CurrentTemplateName { get; }

		Object[] TemplateNameStack { get; }

		Resource CurrentResource { get; set; }

		/// <summary>  
		/// set the current template name on top of stack
		/// </summary>
		/// <param name="s">current template name</param>
		void PushCurrentTemplateName(String s);

		/// <summary>  
		/// remove the current template name from stack
		/// </summary>
		void PopCurrentTemplateName();

		/// <summary>  get the current template name
		/// *
		/// </summary>
		/// <returns>String current template name
		/// 
		/// </returns>
		/// <summary>  Returns the template name stack in form of an array.
		/// *
		/// </summary>
		/// <returns>Object[] with the template name stack contents.
		/// 
		/// </returns>
		/// <seealso cref=" IntrospectionCacheData)
		/// object if exists for the key
		/// *
		/// "/>
		/// <param name="key"> key to find in cache
		/// </param>
		/// <returns>cache object
		/// 
		/// </returns>
		IntrospectionCacheData ICacheGet(Object key);

		/// <seealso cref=" IntrospectionCacheData)
		/// element in the cache for specified key
		/// *
		/// "/>
		/// <param name="key"> key 
		/// </param>
		/// <param name="o"> IntrospectionCacheData object to place in cache
		/// 
		/// </param>
		void ICachePut(Object key, IntrospectionCacheData o);

		/// <summary>
		/// temporary fix to enable #include() to figure out
		/// current encoding.
		/// </summary>
	}
}
--- NEW FILE: IContext.cs ---
namespace NVelocity.Context
{
	using System;

	/// <summary>
	/// Interface describing the application data context.  This set of
	/// routines is used by the application to set and remove 'named' data
	/// object to pass them to the template engine to use when rendering
	/// a template.
	/// 
	/// This is the same set of methods supported by the original Context
	/// class
	/// </summary>
	/// <seealso cref="NVelocity.Context.AbstractContext"/>
	/// <seealso cref="NVelocity.VelocityContext"/>
	/// <author> <a href="mailto:jv...@ap...">Jason van Zyl</a></author>
	/// <author> <a href="mailto:ge...@op...">Geir Magnusson Jr.</a></author>
	public interface IContext
	{
		/// <summary>
		/// Adds a name/value pair to the context.
		/// </summary>
		/// <param name="key">The name to key the provided value with.</param>
		/// <param name="value">The corresponding value.</param>
		Object Put(String key, Object value);

		/// <summary>
		/// Gets the value corresponding to the provided key from the context.
		/// </summary>
		/// <param name="key">The name of the desired value.</param>
		/// <returns>The value corresponding to the provided key.</returns>
		Object Get(String key);

		/// <summary>
		/// Indicates whether the specified key is in the context.
		/// </summary>
		/// <param name="key">The key to look for.</param>
		/// <returns>Whether the key is in the context.</returns>
		Boolean ContainsKey(Object key);

		/// <summary>
		/// Get all the keys for the values in the context
		/// </summary>
		Object[] Keys { get; }

		/// <summary>
		/// Removes the value associated with the specified key from the context.
		/// </summary>
		/// <param name="key">The name of the value to remove.</param>
		/// <returns>The value that the key was mapped to, or <code>null</code> if unmapped.</returns>
		Object Remove(Object key);


	}
}