X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2FAbstractFrontendHistory.java;h=01fc35c395656896ba59e668134429875cc13508;hb=0175a376323f6c916b5a4340a27751ebef22fc83;hp=072f8ede80c978987e78767f0df019f56efa6438;hpb=12fcdfe39aa26dcba7fd3bb4d4c68e3d02e65c51;p=controller.git

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractFrontendHistory.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractFrontendHistory.java
index 072f8ede80..01fc35c395 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractFrontendHistory.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractFrontendHistory.java
@@ -7,8 +7,9 @@
  */
 package org.opendaylight.controller.cluster.datastore;
 
+import static java.util.Objects.requireNonNull;
+
 import com.google.common.base.MoreObjects;
-import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Range;
 import com.google.common.collect.RangeSet;
@@ -17,7 +18,7 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
 import java.util.SortedSet;
-import javax.annotation.Nullable;
+import org.eclipse.jdt.annotation.Nullable;
 import org.opendaylight.controller.cluster.access.commands.AbstractReadTransactionRequest;
 import org.opendaylight.controller.cluster.access.commands.ClosedTransactionException;
 import org.opendaylight.controller.cluster.access.commands.CommitLocalTransactionRequest;
@@ -60,10 +61,10 @@ abstract class AbstractFrontendHistory implements Identifiable<LocalHistoryIdent
 
     AbstractFrontendHistory(final String persistenceId, final ShardDataTree tree,
         final Map<UnsignedLong, Boolean> closedTransactions, final RangeSet<UnsignedLong> purgedTransactions) {
-        this.persistenceId = Preconditions.checkNotNull(persistenceId);
-        this.tree = Preconditions.checkNotNull(tree);
-        this.closedTransactions = Preconditions.checkNotNull(closedTransactions);
-        this.purgedTransactions = Preconditions.checkNotNull(purgedTransactions);
+        this.persistenceId = requireNonNull(persistenceId);
+        this.tree = requireNonNull(tree);
+        this.closedTransactions = requireNonNull(closedTransactions);
+        this.purgedTransactions = requireNonNull(purgedTransactions);
     }
 
     final String persistenceId() {
@@ -74,8 +75,7 @@ abstract class AbstractFrontendHistory implements Identifiable<LocalHistoryIdent
         return tree.readTime();
     }
 
-    @Nullable
-    final TransactionSuccess<?> handleTransactionRequest(final TransactionRequest<?> request,
+    final @Nullable TransactionSuccess<?> handleTransactionRequest(final TransactionRequest<?> request,
             final RequestEnvelope envelope, final long now) throws RequestException {
         if (request instanceof TransactionPurgeRequest) {
             return handleTransactionPurgeRequest(request, envelope, now);