Merge "Add missing copyright text"

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / messages / DataExistsReply.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/messages/DataExistsReply.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/messages/DataExistsReply.java
index 04fafa10e29fc66f66f89faca14f9021a33b50a1..0ea865aa07e06b8f201955d9bfcac61c27d83725 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/messages/DataExistsReply.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/messages/DataExistsReply.java
@@ -10,29 +10,47 @@ package org.opendaylight.controller.cluster.datastore.messages;
 
 import org.opendaylight.controller.protobuff.messages.transaction.ShardTransactionMessages;
 
-public class DataExistsReply implements SerializableMessage{
+public class DataExistsReply implements SerializableMessage {
+    public static final Class<ShardTransactionMessages.DataExistsReply> SERIALIZABLE_CLASS =
+            ShardTransactionMessages.DataExistsReply.class;
 
-
-    public static final Class SERIALIZABLE_CLASS = ShardTransactionMessages.DataExistsReply.class;
+    private static final DataExistsReply TRUE = new DataExistsReply(true, null);
+    private static final DataExistsReply FALSE = new DataExistsReply(false, null);
+    private static final ShardTransactionMessages.DataExistsReply SERIALIZABLE_TRUE =
+            ShardTransactionMessages.DataExistsReply.newBuilder().setExists(true).build();
+    private static final ShardTransactionMessages.DataExistsReply SERIALIZABLE_FALSE =
+            ShardTransactionMessages.DataExistsReply.newBuilder().setExists(false).build();
 
     private final boolean exists;
 
-    public DataExistsReply(boolean exists) {
+    private DataExistsReply(final boolean exists, final Void dummy) {
         this.exists = exists;
     }
 
+    /**
+     * @deprecated Use {@link #create(boolean)} instead.
+     * @param exists
+     */
+    @Deprecated
+    public DataExistsReply(final boolean exists) {
+        this(exists, null);
+    }
+
+    public static DataExistsReply create(final boolean exists) {
+        return exists ? TRUE : FALSE;
+    }
+
     public boolean exists() {
         return exists;
     }
 
-    @Override public Object toSerializable() {
-        return ShardTransactionMessages.DataExistsReply.newBuilder()
-            .setExists(exists).build();
+    @Override
+    public Object toSerializable() {
+        return exists ? SERIALIZABLE_TRUE : SERIALIZABLE_FALSE;
     }
 
-    public static DataExistsReply fromSerializable(Object serializable){
+    public static DataExistsReply fromSerializable(final Object serializable) {
         ShardTransactionMessages.DataExistsReply o = (ShardTransactionMessages.DataExistsReply) serializable;
-        return new DataExistsReply(o.getExists());
+        return create(o.getExists());
     }
-
 }