Populate data/ hierarchy

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

diff --git a/data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/nodes/AbstractImmutableDataContainerNode.java b/data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/nodes/AbstractImmutableDataContainerNode.java
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+/*
+ * Copyright (c) 2013 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.yangtools.yang.data.impl.schema.nodes;
+
+import java.util.Collection;
+import java.util.Map;
+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 org.opendaylight.yangtools.yang.data.spi.node.AbstractNormalizedNode;
+
+public abstract class AbstractImmutableDataContainerNode<K extends PathArgument, N extends DataContainerNode>
+        extends AbstractNormalizedNode<K, N> implements DataContainerNode {
+    private final Map<PathArgument, Object> children;
+
+    protected AbstractImmutableDataContainerNode(final Map<PathArgument, Object> children, final K nodeIdentifier) {
+        super(nodeIdentifier);
+        this.children = ImmutableOffsetMap.unorderedCopyOf(children);
+    }
+
+    @Override
+    public final DataContainerChild childByArg(final PathArgument child) {
+        return LazyLeafOperations.getChild(children, child);
+    }
+
+    @Override
+    public final Collection<DataContainerChild> body() {
+        return new LazyValues(children);
+    }
+
+    @Override
+    public final int size() {
+        return children.size();
+    }
+
+    /**
+     * 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 int valueHashCode() {
+        return children.hashCode();
+    }
+
+    @Override
+    protected boolean valueEquals(final N other) {
+        return other instanceof AbstractImmutableDataContainerNode<?, ?> && children.equals(
+                ((AbstractImmutableDataContainerNode<?, ?>) other).children);
+    }
+}