Use Empty instead of Void in cohorts

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

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractThreePhaseCommitCohort.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractThreePhaseCommitCohort.java
index cac0f5135463f0772fdaf34c4f25297c22e8cf70..49b398f3fcd158b513b17b4acba34f05c9a2dcd0 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractThreePhaseCommitCohort.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractThreePhaseCommitCohort.java
@@ -7,9 +7,12 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
-import akka.actor.ActorSelection;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
 import java.util.List;
-import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
+import org.opendaylight.yangtools.yang.common.Empty;
 import scala.concurrent.Future;
 
 /**
@@ -17,6 +20,11 @@ import scala.concurrent.Future;
  * implementation. In addition to the usual set of methods it also contains the list of actor
  * futures.
  */
-abstract class AbstractThreePhaseCommitCohort implements DOMStoreThreePhaseCommitCohort {
-    abstract List<Future<ActorSelection>> getCohortFutures();
+public abstract class AbstractThreePhaseCommitCohort<T> implements DOMStoreThreePhaseCommitCohort {
+    protected static final @NonNull ListenableFuture<Empty> IMMEDIATE_EMPTY_SUCCESS =
+        Futures.immediateFuture(Empty.value());
+    protected static final @NonNull ListenableFuture<Boolean> IMMEDIATE_BOOLEAN_SUCCESS =
+        Futures.immediateFuture(Boolean.TRUE);
+
+    abstract List<Future<T>> getCohortFutures();
 }