BUG-509: Refactor listener walking

[controller.git] / opendaylight / md-sal / sal-dom-broker / src / main / java / org / opendaylight / controller / md / sal / dom / store / impl / tree / data / StoreMetadataNode.java

diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/StoreMetadataNode.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/StoreMetadataNode.java
index 8addb89bd1ae2180959ba458b2d0762f998d7f21..0ee0d9b32c990685c8169eb0430d35d64dacc2e0 100644 (file)
--- a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/StoreMetadataNode.java
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/StoreMetadataNode.java
@@ -24,15 +24,12 @@ import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
 import com.google.common.primitives.UnsignedLong;
 
-// FIXME: this should not be public
-public class StoreMetadataNode implements Immutable, Identifiable<PathArgument>, StoreTreeNode<StoreMetadataNode> {
-
+class StoreMetadataNode implements Immutable, Identifiable<PathArgument>, StoreTreeNode<StoreMetadataNode> {
+    private final Map<PathArgument, StoreMetadataNode> children;
     private final UnsignedLong nodeVersion;
     private final UnsignedLong subtreeVersion;
     private final NormalizedNode<?, ?> data;
 
-    private final Map<PathArgument, StoreMetadataNode> children;
-
     /**
      *
      * @param data
@@ -42,9 +39,9 @@ public class StoreMetadataNode implements Immutable, Identifiable<PathArgument>,
      */
     protected StoreMetadataNode(final NormalizedNode<?, ?> data, final UnsignedLong nodeVersion,
             final UnsignedLong subtreeVersion, final Map<PathArgument, StoreMetadataNode> children) {
-        this.nodeVersion = nodeVersion;
-        this.subtreeVersion = subtreeVersion;
-        this.data = data;
+        this.nodeVersion = Preconditions.checkNotNull(nodeVersion);
+        this.subtreeVersion = Preconditions.checkNotNull(subtreeVersion);
+        this.data = Preconditions.checkNotNull(data);
         this.children = Preconditions.checkNotNull(children);
     }