Use sizeHints in ImmutableNode builders

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

diff --git a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableOrderedMapNodeBuilder.java b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableOrderedMapNodeBuilder.java
index 3f9e4d5f12ae029b6bd00199baa13c6e219af291..ec994bcc56158384a54c85b0ec5a76288be1c486 100644 (file)
--- a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableOrderedMapNodeBuilder.java
+++ b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableOrderedMapNodeBuilder.java
@@ -7,32 +7,40 @@
  */
 package org.opendaylight.yangtools.yang.data.impl.schema.builder.impl;
 
+import com.google.common.base.Optional;
+import com.google.common.collect.Iterables;
+import java.util.Collection;
 import java.util.LinkedHashMap;
-import java.util.List;
 import java.util.Map;
-
 import org.opendaylight.yangtools.concepts.Immutable;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.NodeIdentifier;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.util.UnmodifiableCollection;
+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.MapNode;
 import org.opendaylight.yangtools.yang.data.api.schema.OrderedMapNode;
 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedNode;
 
-import com.google.common.base.Optional;
-import com.google.common.collect.Iterables;
-
-public class ImmutableOrderedMapNodeBuilder
-        implements CollectionNodeBuilder<MapEntryNode, OrderedMapNode> {
-
-    private Map<InstanceIdentifier.NodeIdentifierWithPredicates, MapEntryNode> value;
-    private InstanceIdentifier.NodeIdentifier nodeIdentifier;
-    private boolean dirty = false;
+public class ImmutableOrderedMapNodeBuilder implements CollectionNodeBuilder<MapEntryNode, OrderedMapNode> {
+    private static final int DEFAULT_CAPACITY = 4;
+    private Map<NodeIdentifierWithPredicates, MapEntryNode> value;
+    private NodeIdentifier nodeIdentifier;
+    private boolean dirty;
 
     protected ImmutableOrderedMapNodeBuilder() {
-        this.value = new LinkedHashMap<>();
+        this.value = new LinkedHashMap<>(DEFAULT_CAPACITY);
+        this.dirty = false;
+    }
+
+    protected ImmutableOrderedMapNodeBuilder(final int sizeHint) {
+        if (sizeHint >= 0) {
+            this.value = new LinkedHashMap<>(sizeHint + sizeHint / 3);
+        } else {
+            this.value = new LinkedHashMap<>(DEFAULT_CAPACITY);
+        }
         this.dirty = false;
     }
 
@@ -46,7 +54,11 @@ public class ImmutableOrderedMapNodeBuilder
         return new ImmutableOrderedMapNodeBuilder();
     }
 
-    public static CollectionNodeBuilder<MapEntryNode, OrderedMapNode> create(final OrderedMapNode node) {
+    public static CollectionNodeBuilder<MapEntryNode, OrderedMapNode> create(final int sizeHint) {
+        return new ImmutableOrderedMapNodeBuilder(sizeHint);
+    }
+
+    public static CollectionNodeBuilder<MapEntryNode, OrderedMapNode> create(final MapNode node) {
         if (!(node instanceof ImmutableOrderedMapNode)) {
             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
         }
@@ -69,14 +81,14 @@ public class ImmutableOrderedMapNodeBuilder
     }
 
     @Override
-    public CollectionNodeBuilder<MapEntryNode, OrderedMapNode> withoutChild(final InstanceIdentifier.PathArgument key) {
+    public CollectionNodeBuilder<MapEntryNode, OrderedMapNode> withoutChild(final PathArgument key) {
         checkDirty();
         this.value.remove(key);
         return this;
     }
 
     @Override
-    public CollectionNodeBuilder<MapEntryNode, OrderedMapNode> withValue(final List<MapEntryNode> value) {
+    public CollectionNodeBuilder<MapEntryNode, OrderedMapNode> withValue(final Collection<MapEntryNode> value) {
         // TODO replace or putAll ?
         for (final MapEntryNode mapEntryNode : value) {
             withChild(mapEntryNode);
@@ -86,7 +98,7 @@ public class ImmutableOrderedMapNodeBuilder
     }
 
     @Override
-    public CollectionNodeBuilder<MapEntryNode, OrderedMapNode> withNodeIdentifier(final InstanceIdentifier.NodeIdentifier nodeIdentifier) {
+    public CollectionNodeBuilder<MapEntryNode, OrderedMapNode> withNodeIdentifier(final NodeIdentifier nodeIdentifier) {
         this.nodeIdentifier = nodeIdentifier;
         return this;
     }
@@ -110,18 +122,18 @@ public class ImmutableOrderedMapNodeBuilder
         return withoutChild(key);
     }
 
-    protected static final class ImmutableOrderedMapNode extends AbstractImmutableNormalizedNode<InstanceIdentifier.NodeIdentifier, Iterable<MapEntryNode>> implements Immutable,OrderedMapNode {
+    protected static final class ImmutableOrderedMapNode extends AbstractImmutableNormalizedNode<NodeIdentifier, Collection<MapEntryNode>> implements Immutable, OrderedMapNode {
 
-        private final Map<InstanceIdentifier.NodeIdentifierWithPredicates, MapEntryNode> children;
+        private final Map<NodeIdentifierWithPredicates, MapEntryNode> children;
 
-        ImmutableOrderedMapNode(final InstanceIdentifier.NodeIdentifier nodeIdentifier,
-                         final Map<InstanceIdentifier.NodeIdentifierWithPredicates, MapEntryNode> children) {
-            super(nodeIdentifier, Iterables.unmodifiableIterable(children.values()));
+        ImmutableOrderedMapNode(final NodeIdentifier nodeIdentifier,
+                         final Map<NodeIdentifierWithPredicates, MapEntryNode> children) {
+            super(nodeIdentifier);
             this.children = children;
         }
 
         @Override
-        public Optional<MapEntryNode> getChild(final InstanceIdentifier.NodeIdentifierWithPredicates child) {
+        public Optional<MapEntryNode> getChild(final NodeIdentifierWithPredicates child) {
             return Optional.fromNullable(children.get(child));
         }
 
@@ -137,12 +149,17 @@ public class ImmutableOrderedMapNodeBuilder
 
         @Override
         public MapEntryNode getChild(final int position) {
-            return Iterables.get(getValue(), position);
+            return Iterables.get(children.values(), position);
         }
 
         @Override
         public int getSize() {
             return children.size();
         }
+
+        @Override
+        public Collection<MapEntryNode> getValue() {
+            return UnmodifiableCollection.create(children.values());
+        }
     }
 }