Removed legacy code that wasn't being used.

[openflowjava.git] / third-party / openflowj_netty / src / main / java / org / openflow / util / ProducerConsumer.java

diff --git a/third-party/openflowj_netty/src/main/java/org/openflow/util/ProducerConsumer.java b/third-party/openflowj_netty/src/main/java/org/openflow/util/ProducerConsumer.java
deleted file mode 100644 (file)
index f2244ef..0000000
--- a/third-party/openflowj_netty/src/main/java/org/openflow/util/ProducerConsumer.java
+++ /dev/null
@@ -1,223 +0,0 @@
-package org.openflow.util;
-
-import java.util.HashSet;
-import java.util.Hashtable;
-import java.util.Map;
-import java.util.Set;
-
-/**
- * The following implement a producer/consumer design pattern in which both
- * producers and consumers explicitly employ a centralized registration
- * mechanism, and java Interfaces are used as contracts.<br>
- */
-public class ProducerConsumer {
-
-    /*
-     * Class variables
-     */
-    protected static ProducerConsumer singleton;
-
-    /*
-     * Default constructor
-     */
-    protected ProducerConsumer() {
-        producerMap = new Hashtable<Class<?>, Set<IProducer>>();
-    }
-
-    /*
-     * Instance variables
-     */
-
-    // Interface/IProducer map
-    protected Map<Class<?>, Set<IProducer>> producerMap;
-
-    /*
-     * Protected methods
-     */
-
-    protected void _registerConsumer(Object consumer, Class<?>[] interfaces,
-                                     Set<Class<?>> iSet,
-                                     Set<Class<?>> iUniqueSet) {
-        // *...Process all interfaces...*/
-        for (Class<?> iface : interfaces) {
-
-            // *...Protect against repeated interfaces...*/
-            if (!iUniqueSet.contains(iface)) {
-                iUniqueSet.add(iface);
-
-                Set<IProducer> producers = producerMap.get(iface);
-
-                if (producers != null) {
-                    for (IProducer producer : producers)
-                        producer.registerConsumer(iface, consumer);
-                    iSet.add(iface);
-                }
-
-                // *...Recurse...*/
-                _registerConsumer(consumer, iface.getInterfaces(), iSet,
-                                  iUniqueSet);
-            }
-        }
-    }
-
-    protected void _registerConsumer(Object consumer, Class<?> clazz,
-                                     Set<Class<?>> iSet,
-                                     Set<Class<?>> iUniqueSet) {
-        if (clazz != null) {
-            // *...Process all interfaces...*/
-            _registerConsumer(consumer, clazz.getInterfaces(), iSet,
-                              iUniqueSet);
-
-            // *...Recurse the class hierarchy...*/
-            _registerConsumer(consumer, clazz.getSuperclass(), iSet,
-                              iUniqueSet);
-        }
-    }
-
-    protected int _deregisterConsumer(Object consumer,
-                                      Class<?>[] interfaces,
-                                      Set<Class<?>> iUniqueSet) {
-        int count = 0;
-
-        // *...Process all interfaces...*/
-        for (Class<?> iface : interfaces) {
-
-            // *...Protect against repeated interfaces...*/
-            if (!iUniqueSet.contains(iface)) {
-                iUniqueSet.add(iface);
-
-                Set<IProducer> producers = producerMap.get(iface);
-
-                if (producers != null) {
-                    for (IProducer producer : producers)
-                        producer.deregisterConsumer(iface, consumer);
-
-                    count++;
-                }
-
-                // *...Recurse...*/
-                count += _deregisterConsumer(consumer,
-                                             iface.getInterfaces(),
-                                             iUniqueSet);
-            }
-        }
-
-        return count;
-    }
-
-    protected int _deregisterConsumer(Object consumer, Class<?> clazz,
-                                      Set<Class<?>> iUniqueSet) {
-        int count = 0;
-
-        if (clazz != null) {
-            // *...Process all interfaces...*/
-            count += _deregisterConsumer(consumer, clazz.getInterfaces(),
-                                         iUniqueSet);
-
-            // *...Recurse the class hierarchy...*/
-            count += _deregisterConsumer(consumer, clazz.getSuperclass(),
-                                         iUniqueSet);
-        }
-
-        return count;
-    }
-
-    /*
-     * Singleton API
-     */
-
-    /**
-     * @return singleton ProducerConsumer
-     */
-    public static synchronized ProducerConsumer getSingleton() {
-        if (singleton == null) singleton = new ProducerConsumer();
-
-        return singleton;
-    }
-
-    /*
-     * Producer APIs
-     */
-
-    /**
-     * Producer registration
-     * 
-     * @param producer
-     *            object that implements IProducer
-     * @param iface
-     *            interface supported by the producer
-     * @return whether there was a previously registered producer, or true if
-     *         one or more the arguments were invalid
-     */
-    public boolean registerProducer(IProducer producer, Class<?> iface) {
-        if (producer != null && iface != null && iface.isInterface()) {
-            Set<IProducer> producers = producerMap.get(iface);
-
-            if (producers == null) {
-                producers = new HashSet<IProducer>();
-                producerMap.put(iface, producers);
-            }
-
-            return producers.add(producer);
-        } else
-            return true;
-    }
-
-    /**
-     * Producer deregistration
-     * 
-     * @param producer
-     *            object that implements IProducer
-     * @param iface
-     *            interface supported by the producer
-     * @return whether the interface/producer pair was removed, or false if one
-     *         or more the arguments were invalid
-     */
-    public boolean deregisterProducer(IProducer producer, Class<?> iface) {
-        if (producer != null && iface != null && iface.isInterface()) {
-            Set<IProducer> producers = producerMap.get(iface);
-
-            if (producers != null) return producers.remove(producer);
-        }
-
-        return false;
-    }
-
-    /*
-     * Consumer APIs
-     */
-
-    /**
-     * Consumer registration
-     * 
-     * @param consumer
-     *            object that implements producer-specific interfaces
-     * @return set of supported interfaces
-     */
-    public Set<Class<?>> registerConsumer(Object consumer) {
-        Set<Class<?>> iSet = new HashSet<Class<?>>();
-
-        if (consumer != null)
-                             _registerConsumer(consumer,
-                                               consumer.getClass(), iSet,
-                                               new HashSet<Class<?>>());
-
-        return iSet;
-    }
-
-    /**
-     * Consumer deregistration
-     * 
-     * @param consumer
-     *            object to deregister
-     * @return number of unregistered interfaces
-     */
-    public int deregisterConsumer(Object consumer) {
-        if (consumer != null)
-            return _deregisterConsumer(consumer, consumer.getClass(),
-                                       new HashSet<Class<?>>());
-        else
-            return 0;
-    }
-
-}