Populate data/ hierarchy

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

diff --git a/data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableMapNodeBuilder.java b/data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableMapNodeBuilder.java
new file mode 100644 (file)
index 0000000..728e977
--- /dev/null
+++ b/data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableMapNodeBuilder.java
@@ -0,0 +1,151 @@
+/*
+ * 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.builder.impl;
+
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.collect.Maps;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import org.eclipse.jdt.annotation.NonNull;
+import org.eclipse.jdt.annotation.Nullable;
+import org.opendaylight.yangtools.util.MapAdaptor;
+import org.opendaylight.yangtools.util.UnmodifiableMap;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
+import org.opendaylight.yangtools.yang.data.api.schema.SystemMapNode;
+import org.opendaylight.yangtools.yang.data.api.schema.builder.CollectionNodeBuilder;
+import org.opendaylight.yangtools.yang.data.spi.node.AbstractNormalizedNode;
+
+public class ImmutableMapNodeBuilder implements CollectionNodeBuilder<MapEntryNode, SystemMapNode> {
+    private static final int DEFAULT_CAPACITY = 4;
+
+    private final Map<NodeIdentifierWithPredicates, MapEntryNode> value;
+
+    private @Nullable NodeIdentifier nodeIdentifier = null;
+
+    protected ImmutableMapNodeBuilder() {
+        this.value = new HashMap<>(DEFAULT_CAPACITY);
+    }
+
+    protected ImmutableMapNodeBuilder(final int sizeHint) {
+        if (sizeHint >= 0) {
+            this.value = Maps.newHashMapWithExpectedSize(sizeHint);
+        } else {
+            this.value = new HashMap<>(DEFAULT_CAPACITY);
+        }
+    }
+
+    protected ImmutableMapNodeBuilder(final SystemMapNode node) {
+        this.nodeIdentifier = node.getIdentifier();
+        this.value = MapAdaptor.getDefaultInstance().takeSnapshot(
+            node instanceof ImmutableMapNode ? ((ImmutableMapNode) node).children : node.asMap());
+    }
+
+    public static @NonNull CollectionNodeBuilder<MapEntryNode, SystemMapNode> create() {
+        return new ImmutableMapNodeBuilder();
+    }
+
+    public static @NonNull CollectionNodeBuilder<MapEntryNode, SystemMapNode> create(final int sizeHint) {
+        return new ImmutableMapNodeBuilder(sizeHint);
+    }
+
+    public static @NonNull CollectionNodeBuilder<MapEntryNode, SystemMapNode> create(final SystemMapNode node) {
+        return new ImmutableMapNodeBuilder(node);
+    }
+
+    @Override
+    public ImmutableMapNodeBuilder withChild(final MapEntryNode child) {
+        this.value.put(child.getIdentifier(), child);
+        return this;
+    }
+
+    @Override
+    public ImmutableMapNodeBuilder withoutChild(final PathArgument key) {
+        this.value.remove(key);
+        return this;
+    }
+
+    @Override
+    public ImmutableMapNodeBuilder withValue(final Collection<MapEntryNode> withValue) {
+        // TODO replace or putAll ?
+        for (final MapEntryNode mapEntryNode : withValue) {
+            withChild(mapEntryNode);
+        }
+
+        return this;
+    }
+
+    @Override
+    public ImmutableMapNodeBuilder withNodeIdentifier(final NodeIdentifier withNodeIdentifier) {
+        this.nodeIdentifier = withNodeIdentifier;
+        return this;
+    }
+
+    @Override
+    public SystemMapNode build() {
+        return new ImmutableMapNode(nodeIdentifier, MapAdaptor.getDefaultInstance().optimize(value));
+    }
+
+    @Override
+    public ImmutableMapNodeBuilder addChild(final MapEntryNode child) {
+        return withChild(child);
+    }
+
+    @Override
+    public ImmutableMapNodeBuilder removeChild(final PathArgument key) {
+        return withoutChild(key);
+    }
+
+    protected static final class ImmutableMapNode extends AbstractNormalizedNode<NodeIdentifier, SystemMapNode>
+            implements SystemMapNode {
+
+        private final @NonNull Map<NodeIdentifierWithPredicates, MapEntryNode> children;
+
+        ImmutableMapNode(final NodeIdentifier nodeIdentifier,
+                         final Map<NodeIdentifierWithPredicates, MapEntryNode> children) {
+            super(nodeIdentifier);
+            this.children = requireNonNull(children);
+        }
+
+        @Override
+        public MapEntryNode childByArg(final NodeIdentifierWithPredicates child) {
+            return children.get(child);
+        }
+
+        @Override
+        public Map<NodeIdentifierWithPredicates, MapEntryNode> asMap() {
+            return UnmodifiableMap.of(children);
+        }
+
+        @Override
+        public int size() {
+            return children.size();
+        }
+
+        @Override
+        protected Class<SystemMapNode> implementedType() {
+            return SystemMapNode.class;
+        }
+
+        @Override
+        protected int valueHashCode() {
+            return children.hashCode();
+        }
+
+        @Override
+        protected boolean valueEquals(final SystemMapNode other) {
+            final Map<NodeIdentifierWithPredicates, MapEntryNode> otherChildren =
+                other instanceof ImmutableMapNode ? ((ImmutableMapNode) other).children : other.asMap();
+            return children.equals(otherChildren);
+        }
+    }
+}