BUG-7697: add defences against nulls

[controller.git] / opendaylight / md-sal / sal-dom-broker / src / main / java / org / opendaylight / controller / md / sal / dom / broker / impl / DOMDataBrokerTransactionChainImpl.java

diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerTransactionChainImpl.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerTransactionChainImpl.java
index 77387c761cd6b26efea4c05471eb9632c695c578..dff375e51ba2143a45860cd15fc9abbb474e5958 100644 (file)
--- a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerTransactionChainImpl.java
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/DOMDataBrokerTransactionChainImpl.java
@@ -1,15 +1,18 @@
 /*
  * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
+ *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
  * and is available at http://www.eclipse.org/legal/epl-v10.html
  */
+
 package org.opendaylight.controller.md.sal.dom.broker.impl;
 
 import com.google.common.base.Preconditions;
 import com.google.common.util.concurrent.CheckedFuture;
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
+import java.util.Collection;
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
 import java.util.concurrent.atomic.AtomicLong;
@@ -32,7 +35,7 @@ import org.slf4j.LoggerFactory;
  */
 final class DOMDataBrokerTransactionChainImpl extends AbstractDOMForwardedTransactionFactory<DOMStoreTransactionChain>
         implements DOMTransactionChain {
-    private static enum State {
+    private enum State {
         RUNNING,
         CLOSING,
         CLOSED,
@@ -87,7 +90,7 @@ final class DOMDataBrokerTransactionChainImpl extends AbstractDOMForwardedTransa
 
     @Override
     public CheckedFuture<Void, TransactionCommitFailedException> submit(
-            final DOMDataWriteTransaction transaction, final Iterable<DOMStoreThreePhaseCommitCohort> cohorts) {
+            final DOMDataWriteTransaction transaction, final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
         checkNotFailed();
         checkNotClosed();