| // $Id$ |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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. |
| // |
| using Org.Apache.Etch.Bindings.Csharp.Msg; |
| using Org.Apache.Etch.Bindings.Csharp.Util; |
| |
| namespace Org.Apache.Etch.Bindings.Csharp.Transport.Filter |
| { |
| abstract public class AbstractMessageFilter : TransportMessage, SessionMessage |
| { |
| protected AbstractMessageFilter(TransportMessage transport, URL uri, Resources resources) |
| { |
| this.transport = transport; |
| transport.SetSession(this); |
| } |
| |
| /// <summary> |
| /// Our transport. |
| /// </summary> |
| protected readonly TransportMessage transport; |
| |
| /// <summary> |
| /// Returns a string such as "Filter/"+transport. |
| /// </summary> |
| /// <returns>a string such as "Filter/"+transport.</returns> |
| abstract public override string ToString(); |
| |
| public virtual void TransportMessage(Who recipient, Message msg) |
| { |
| transport.TransportMessage(recipient, msg); |
| } |
| |
| public SessionMessage GetSession() |
| { |
| return session; |
| } |
| |
| public void SetSession(SessionMessage session) |
| { |
| this.session = session; |
| } |
| |
| /// <summary> |
| /// Our session. |
| /// </summary> |
| protected SessionMessage session; |
| |
| public virtual object TransportQuery(object query) |
| { |
| return transport.TransportQuery(query); |
| } |
| |
| public virtual void TransportControl(object control, object value) |
| { |
| transport.TransportControl(control, value); |
| } |
| |
| public void TransportNotify(object evnt) |
| { |
| transport.TransportNotify(evnt); |
| } |
| |
| public virtual bool SessionMessage(Who sender, Message msg) |
| { |
| return session.SessionMessage(sender, msg); |
| } |
| |
| public object SessionQuery(object query) |
| { |
| return session.SessionQuery(query); |
| } |
| |
| public void SessionControl(object control, object value) |
| { |
| session.SessionControl(control, value); |
| } |
| |
| public void SessionNotify(object evnt) |
| { |
| if (evnt == (object) SessionConsts.UP) |
| if (!SessionUp()) |
| return; |
| |
| if (evnt == (object) SessionConsts.DOWN) |
| if (!SessionDown()) |
| return; |
| |
| session.SessionNotify(evnt); |
| } |
| |
| /** |
| * Tells the filter that the session is up. |
| * @return true if the event should be passed on to our session, false |
| * if it should be swallowed. |
| * @throws Exception |
| */ |
| protected virtual bool SessionUp() |
| { |
| // nothing to do. |
| return true; |
| } |
| |
| /** |
| * Tells the filter that the session is down. |
| * @return true if the event should be passed on to our session, false |
| * if it should be swallowed. |
| * @throws Exception |
| */ |
| protected virtual bool SessionDown() |
| { |
| // nothing to do. |
| return true; |
| } |
| } |
| } |