1 files changed, 132 insertions, 0 deletions
diff --git a/simple/simple-transport/src/main/java/org/simpleframework/transport/reactor/ExecutorReactor.java b/simple/simple-transport/src/main/java/org/simpleframework/transport/reactor/ExecutorReactor.java
new file mode 100644
index 0000000..9d741d8
--- /dev/null
+++ b/simple/simple-transport/src/main/java/org/simpleframework/transport/reactor/ExecutorReactor.java
@@ -0,0 +1,132 @@
+/*
+ * ExecutorReactor.java February 2007
+ *
+ * Copyright (C) 2007, Niall Gallagher <niallg@users.sf.net>
+ *
+ * Licensed 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.simpleframework.transport.reactor;
+
+import java.io.IOException;
+import java.util.concurrent.Executor;
+
+/**
+ * The <code>ExecutorReactor</code> is used to schedule operation for
+ * execution using an <code>Executor</code> implementation. This can be
+ * useful when the operations performed are time intensive. For example
+ * if the operations performed a read of the underlying channel and 
+ * then had to parse the contents of the payload. Such operations would
+ * reduce the performance of the reactor if it could not delegate to
+ * some other form of executor, as it would delay their execution.
+ *
+ * @author Niall Gallagher
+ */
+public class ExecutorReactor implements Reactor {
+
+  /**
+   * This is used to distribute the ready operations for execution.
+   */         
+  private final OperationDistributor exchange;
+
+  /**
+   * This is used to execute the operations that ready to run.
+   */ 
+  private final Executor executor;
+  
+  /**
+   * Constructor for the <code>ExecutorReactor</code> object. This is
+   * used to create a reactor that can delegate to the executor. This
+   * also accepts the operations it is interested in, the value is
+   * taken from the <code>SelectionKey</code> object. A bit mask can
+   * be used to show interest in several operations at once.
+   *
+   * @param executor this is the executor used to run the operations
+   */  
+  public ExecutorReactor(Executor executor) throws IOException {
+     this(executor, 1);
+  }
+  
+  /**
+   * Constructor for the <code>ExecutorReactor</code> object. This is
+   * used to create a reactor that can delegate to the executor. This
+   * also accepts the operations it is interested in, the value is
+   * taken from the <code>SelectionKey</code> object. A bit mask can
+   * be used to show interest in several operations at once.
+   *
+   * @param executor this is the executor used to run the operations
+   * @param count this is the number of distributors to be used
+   */  
+  public ExecutorReactor(Executor executor, int count) throws IOException {    
+     this(executor, count, 120000);
+  }  
+
+  /**
+   * Constructor for the <code>ExecutorReactor</code> object. This is
+   * used to create a reactor that can delegate to the executor. This
+   * also accepts the operations it is interested in, the value is
+   * taken from the <code>SelectionKey</code> object. A bit mask can
+   * be used to show interest in several operations at once.
+   *
+   * @param executor this is the executor used to run the operations
+   * @param count this is the number of distributors to be used
+   * @param expiry the length of time to maintain and idle operation
+   */    
+  public ExecutorReactor(Executor executor, int count, long expiry) throws IOException {    
+    this.exchange = new PartitionDistributor(executor, count, expiry);    
+    this.executor = executor;
+  }
+
+  /**
+   * This method is used to execute the provided operation without
+   * the need to specifically check for I/O events. This is used if
+   * the operation knows that the <code>SelectableChannel</code> is
+   * ready, or if the I/O operation can be performed without knowing
+   * if the channel is ready. Typically this is an efficient means
+   * to perform a poll rather than a select on the channel.
+   *
+   * @param task this is the task to execute immediately
+   */   
+  public void process(Operation task) throws IOException {
+     executor.execute(task);          
+  }
+  
+  /**        
+   * This method is used to execute the provided operation when there
+   * is an I/O event that task is interested in. This will used the
+   * operations <code>SelectableChannel</code> object to determine 
+   * the events that are ready on the channel. If this reactor is
+   * interested in any of the ready events then the task is executed.
+   *
+   * @param task this is the task to execute on interested events
+   * @param require this is the bit-mask value for interested events
+   */  
+  public void process(Operation task, int require) throws IOException {         
+     exchange.process(task, require);    
+  }        
+
+  /**
+   * This is used to stop the reactor so that further requests to
+   * execute operations does nothing. This will clean up all of 
+   * the reactors resources and unregister any operations that are
+   * currently awaiting execution. This should be used to ensure
+   * any threads used by the reactor gracefully stop.
+   */   
+  public void stop() throws IOException {
+     exchange.close();
+  }
+}
+
+
+
+