Always use lazy leaf nodes

[yangtools.git] / yang / yang-data-impl / src / main / java / org / opendaylight / yangtools / yang / data / impl / schema / nodes / AbstractImmutableDataContainerNode.java

diff --git a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/nodes/AbstractImmutableDataContainerNode.java b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/nodes/AbstractImmutableDataContainerNode.java
index a3de4638061851c87a8b93d593cf52bda6d0b8af..6b5e0d7e5124eb8ee661fa9f8119a624252f7daf 100644 (file)
--- a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/nodes/AbstractImmutableDataContainerNode.java
+++ b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/nodes/AbstractImmutableDataContainerNode.java
@@ -7,32 +7,38 @@
  */
 package org.opendaylight.yangtools.yang.data.impl.schema.nodes;
 
+import java.util.Collection;
 import java.util.Map;
-
-import org.opendaylight.yangtools.concepts.Immutable;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
+import java.util.Optional;
+import org.opendaylight.yangtools.util.ImmutableOffsetMap;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
 
-import com.google.common.base.Optional;
-import com.google.common.collect.Iterables;
+public abstract class AbstractImmutableDataContainerNode<K extends PathArgument>
+        extends AbstractImmutableNormalizedNode<K, Collection<DataContainerChild<? extends PathArgument, ?>>>
+        implements DataContainerNode<K> {
+    private final Map<PathArgument, Object> children;
 
-public abstract class AbstractImmutableDataContainerNode<K extends PathArgument> //
-        extends AbstractImmutableNormalizedNode<K, Iterable<DataContainerChild<? extends PathArgument, ?>>> //
-        implements Immutable, DataContainerNode<K> {
+    protected AbstractImmutableDataContainerNode(final Map<PathArgument, Object> children, final K nodeIdentifier) {
+        super(nodeIdentifier);
 
-    protected final Map<PathArgument, DataContainerChild<? extends PathArgument, ?>> children;
+        this.children = ImmutableOffsetMap.unorderedCopyOf(children);
+    }
 
+    @Override
+    public final Optional<DataContainerChild<? extends PathArgument, ?>> getChild(final PathArgument child) {
+        return Optional.ofNullable(LazyLeafOperations.getChild(children, child));
+    }
 
-    public AbstractImmutableDataContainerNode(
-            final Map<PathArgument, DataContainerChild<? extends PathArgument, ?>> children, final K nodeIdentifier) {
-        super(nodeIdentifier, Iterables.unmodifiableIterable(children.values()));
-        this.children = children;
+    @Override
+    public final Collection<DataContainerChild<? extends PathArgument, ?>> getValue() {
+        return new LazyValues(children);
     }
 
     @Override
-    public final Optional<DataContainerChild<? extends PathArgument, ?>> getChild(final PathArgument child) {
-        return Optional.<DataContainerChild<? extends PathArgument, ?>> fromNullable(children.get(child));
+    public final int size() {
+        return children.size();
     }
 
     @Override
@@ -40,12 +46,22 @@ public abstract class AbstractImmutableDataContainerNode<K extends PathArgument>
         return children.hashCode();
     }
 
+    /**
+     * DO NOT USE THIS METHOD.
+     *
+     * <p>
+     * This is an implementation-internal API and no outside users should use it. If you do, you are asking for trouble,
+     * as the returned object is not guaranteed to conform to java.util.Map interface, nor is its contents well-defined.
+     *
+     * @return An unmodifiable view if this node's children.
+     */
+    public final Map<PathArgument, Object> getChildren() {
+        return children;
+    }
+
     @Override
     protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
-        if (!(other instanceof AbstractImmutableDataContainerNode<?>)) {
-            return false;
-        }
-
-        return children.equals(((AbstractImmutableDataContainerNode<?>)other).children);
+        return other instanceof AbstractImmutableDataContainerNode<?> && children.equals(
+                ((AbstractImmutableDataContainerNode<?>) other).children);
     }
 }