1 files changed, 0 insertions, 135 deletions
diff --git a/trunk/qpid/java/client/src/main/java/org/apache/qpid/client/util/FlowControllingBlockingQueue.java b/trunk/qpid/java/client/src/main/java/org/apache/qpid/client/util/FlowControllingBlockingQueue.java
deleted file mode 100644
index ee7fc533a3..0000000000
--- a/trunk/qpid/java/client/src/main/java/org/apache/qpid/client/util/FlowControllingBlockingQueue.java
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- *
- * 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.
- *
- */
-package org.apache.qpid.client.util;
-
-import java.util.Iterator;
-import java.util.Queue;
-import java.util.concurrent.ConcurrentLinkedQueue;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * A blocking queue that emits events above a user specified threshold allowing the caller to take action (e.g. flow
- * control) to try to prevent the queue growing (much) further. The underlying queue itself is not bounded therefore the
- * caller is not obliged to react to the events. <p/> This implementation is <b>only</b> safe where we have a single
- * thread adding items and a single (different) thread removing items.
- *
- * @todo Make this implement java.util.Queue and hide the implementation. Then different queue types can be substituted.
- */
-public class FlowControllingBlockingQueue
-{
-	private static final Logger _logger = LoggerFactory.getLogger(FlowControllingBlockingQueue.class);
-	
-    /** This queue is bounded and is used to store messages before being dispatched to the consumer */
-    private final Queue _queue = new ConcurrentLinkedQueue();
-
-    private final int _flowControlHighThreshold;
-    private final int _flowControlLowThreshold;
-
-    private final ThresholdListener _listener;
-
-    /** We require a separate count so we can track whether we have reached the threshold */
-    private int _count;
-    
-    private boolean disableFlowControl; 
-
-    public boolean isEmpty()
-    {
-        return _queue.isEmpty();
-    }
-
-    public interface ThresholdListener
-    {
-        void aboveThreshold(int currentValue);
-
-        void underThreshold(int currentValue);
-    }
-
-    public FlowControllingBlockingQueue(int threshold, ThresholdListener listener)
-    {
-        this(threshold, threshold, listener);
-    }
-
-    public FlowControllingBlockingQueue(int highThreshold, int lowThreshold, ThresholdListener listener)
-    {
-        _flowControlHighThreshold = highThreshold;
-        _flowControlLowThreshold = lowThreshold;
-        _listener = listener;
-        if (highThreshold == 0)
-        {
-        	disableFlowControl = true;
-        }
-    }
-
-    public Object take() throws InterruptedException
-    {
-        Object o = _queue.poll();
-        if(o == null)
-        {
-            synchronized(this)
-            {
-                while((o = _queue.poll())==null)
-                {
-                    wait();
-                }
-            }
-        }
-        if (!disableFlowControl && _listener != null)
-        {
-            synchronized (_listener)
-            {
-                if (_count-- == _flowControlLowThreshold)
-                {
-                    _listener.underThreshold(_count);
-                }
-            }
-            
-        }
-
-        return o;
-    }
-
-    public void add(Object o)
-    {
-        synchronized(this)
-        {
-            _queue.add(o);
-
-            notifyAll();
-        }
-        if (!disableFlowControl && _listener != null)
-        {
-            synchronized (_listener)
-            {
-                if (++_count == _flowControlHighThreshold)
-                {
-                    _listener.aboveThreshold(_count);
-                }
-            }
-        }
-    }
-
-    public Iterator iterator()
-    {
-        return _queue.iterator();
-    }
-}