| /* |
| * 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 System; |
| using System.Collections; |
| using System.Messaging; |
| using Apache.NMS; |
| using Apache.NMS.Util; |
| using Apache.NMS.MSMQ.Readers; |
| |
| namespace Apache.NMS.MSMQ |
| { |
| public class QueueBrowser : Apache.NMS.IQueueBrowser |
| { |
| private bool disposed = false; |
| |
| private readonly Session session; |
| private MessageQueue messageQueue; |
| |
| private string selector; |
| |
| private IMessageReader reader; |
| |
| public QueueBrowser(Session session, MessageQueue messageQueue) |
| : this(session, messageQueue, null) |
| { |
| } |
| |
| public QueueBrowser(Session session, MessageQueue messageQueue, |
| string selector) |
| { |
| this.session = session; |
| this.messageQueue = messageQueue; |
| if(null != this.messageQueue) |
| { |
| this.messageQueue.MessageReadPropertyFilter.SetAll(); |
| } |
| this.selector = selector; |
| |
| reader = MessageReaderUtil.CreateMessageReader( |
| messageQueue, session.MessageConverter, selector); |
| } |
| |
| ~QueueBrowser() |
| { |
| Dispose(false); |
| } |
| |
| #region IDisposable Members |
| |
| ///<summary> |
| /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. |
| ///</summary> |
| public void Dispose() |
| { |
| Dispose(true); |
| GC.SuppressFinalize(this); |
| } |
| |
| protected void Dispose(bool disposing) |
| { |
| if(disposed) |
| { |
| return; |
| } |
| |
| if(disposing) |
| { |
| // Dispose managed code here. |
| } |
| |
| try |
| { |
| Close(); |
| } |
| catch |
| { |
| // Ignore errors. |
| } |
| |
| disposed = true; |
| } |
| |
| #endregion |
| |
| public void Close() |
| { |
| if(messageQueue != null) |
| { |
| messageQueue.Dispose(); |
| messageQueue = null; |
| } |
| } |
| |
| public string MessageSelector |
| { |
| get { return selector; } |
| } |
| |
| public IQueue Queue |
| { |
| get { return new Queue(this.messageQueue.Path); } |
| } |
| |
| internal class Enumerator : IEnumerator, IDisposable |
| { |
| private Session session; |
| private MessageEnumerator innerEnumerator; |
| private IMessageReader reader; |
| |
| public Enumerator(Session session, MessageQueue messageQueue, |
| IMessageReader reader) |
| { |
| this.session = session; |
| this.innerEnumerator = messageQueue.GetMessageEnumerator2(); |
| this.reader = reader; |
| } |
| |
| public object Current |
| { |
| get |
| { |
| return this.session.MessageConverter.ToNmsMessage(this.innerEnumerator.Current); |
| } |
| } |
| |
| public bool MoveNext() |
| { |
| while(this.innerEnumerator.MoveNext()) |
| { |
| if(reader.Matches(this.innerEnumerator.Current)) |
| { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public void Reset() |
| { |
| this.innerEnumerator.Reset(); |
| } |
| |
| public void Dispose() |
| { |
| if(innerEnumerator != null) |
| { |
| innerEnumerator.Close(); |
| innerEnumerator = null; |
| } |
| } |
| } |
| |
| public IEnumerator GetEnumerator() |
| { |
| return new Enumerator(this.session, this.messageQueue, this.reader); |
| } |
| } |
| } |