BUG-5280: make EmptyQueue public

Allow EmptyQueue to be used externally and correct its javadoc.

Change-Id: I4ae03095844ea235e735ffbdc48f974343a8e9a1
Signed-off-by: Robert Varga <rovarga@cisco.com>

diff --git a/opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/EmptyQueue.java b/opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/EmptyQueue.java
index 31d863a36cf8721de52969ed0bfb5e94dfad4922..1513ebaad6c1dd1c924cfaf800aeb522ef6be585 100644 (file)
--- a/opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/EmptyQueue.java
+++ b/opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/EmptyQueue.java
@@ -7,6 +7,7 @@
  */
 package org.opendaylight.controller.cluster.access.client;
 
  */
 package org.opendaylight.controller.cluster.access.client;
 

+import com.google.common.annotations.Beta;

 import java.util.AbstractQueue;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.AbstractQueue;
 import java.util.Collections;
 import java.util.Iterator;


@@ -21,7 +22,8 @@ import java.util.Queue;
  * @param <E> the type of elements held in this collection
  */
 // TODO: move this class into yangtools.util
  * @param <E> the type of elements held in this collection
  */
 // TODO: move this class into yangtools.util

-final class EmptyQueue<T> extends AbstractQueue<T> {
+@Beta
+public final class EmptyQueue<E> extends AbstractQueue<E> {

     private static final EmptyQueue<?> INSTANCE = new EmptyQueue<>();
 
     private EmptyQueue() {
     private static final EmptyQueue<?> INSTANCE = new EmptyQueue<>();
 
     private EmptyQueue() {


@@ -29,27 +31,27 @@ final class EmptyQueue<T> extends AbstractQueue<T> {
     }
 
     @SuppressWarnings("unchecked")
     }
 
     @SuppressWarnings("unchecked")

-    static <T> Queue<T> getInstance() {
+    public static <T> Queue<T> getInstance() {

         return (Queue<T>) INSTANCE;
     }
 
     @Override
         return (Queue<T>) INSTANCE;
     }
 
     @Override

-    public boolean offer(final T e) {
+    public boolean offer(final E e) {

         return false;
     }
 
     @Override
         return false;
     }
 
     @Override

-    public T poll() {
+    public E poll() {

         return null;
     }
 
     @Override
         return null;
     }
 
     @Override

-    public T peek() {
+    public E peek() {

         return null;
     }
 
     @Override
         return null;
     }
 
     @Override

-    public Iterator<T> iterator() {
+    public Iterator<E> iterator() {

         return Collections.emptyIterator();
     }
 
         return Collections.emptyIterator();
     }