data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableLeafSetNodeBuilder.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.yangtools.yang.data.impl.schema.builder.impl;
   9
  10 import com.google.common.collect.Maps;
  11 import java.util.Collection;
  12 import java.util.HashMap;
  13 import java.util.Map;
  14 import org.eclipse.jdt.annotation.NonNull;
  15 import org.opendaylight.yangtools.util.MapAdaptor;
  16 import org.opendaylight.yangtools.util.UnmodifiableCollection;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  20 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
  21 import org.opendaylight.yangtools.yang.data.api.schema.SystemLeafSetNode;
  22 import org.opendaylight.yangtools.yang.data.api.schema.builder.ListNodeBuilder;
  23 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedValueNode;
  24
  25 public class ImmutableLeafSetNodeBuilder<T> implements ListNodeBuilder<T, SystemLeafSetNode<T>> {
  26     private static final int DEFAULT_CAPACITY = 4;
  27
  28     private final Map<NodeWithValue<?>, LeafSetEntryNode<T>> value;
  29
  30     private NodeIdentifier nodeIdentifier;
  31
  32     protected ImmutableLeafSetNodeBuilder() {
  33         value = new HashMap<>(DEFAULT_CAPACITY);
  34     }
  35
  36     protected ImmutableLeafSetNodeBuilder(final int sizeHint) {
  37         if (sizeHint >= 0) {
  38             value = Maps.newHashMapWithExpectedSize(sizeHint);
  39         } else {
  40             value = new HashMap<>(DEFAULT_CAPACITY);
  41         }
  42     }
  43
  44     protected ImmutableLeafSetNodeBuilder(final ImmutableLeafSetNode<T> node) {
  45         nodeIdentifier = node.getIdentifier();
  46         value = MapAdaptor.getDefaultInstance().takeSnapshot(node.children);
  47     }
  48
  49     public static <T> @NonNull ListNodeBuilder<T, SystemLeafSetNode<T>> create() {
  50         return new ImmutableLeafSetNodeBuilder<>();
  51     }
  52
  53     public static <T> @NonNull ListNodeBuilder<T, SystemLeafSetNode<T>> create(final int sizeHint) {
  54         return new ImmutableLeafSetNodeBuilder<>(sizeHint);
  55     }
  56
  57     public static <T> @NonNull ListNodeBuilder<T, SystemLeafSetNode<T>> create(final SystemLeafSetNode<T> node) {
  58         if (!(node instanceof ImmutableLeafSetNode<?>)) {
  59             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  60         }
  61
  62         return new ImmutableLeafSetNodeBuilder<>((ImmutableLeafSetNode<T>) node);
  63     }
  64
  65     @Override
  66     public ImmutableLeafSetNodeBuilder<T> withChild(final LeafSetEntryNode<T> child) {
  67         this.value.put(child.getIdentifier(), child);
  68         return this;
  69     }
  70
  71     @Override
  72     public ImmutableLeafSetNodeBuilder<T> withoutChild(final PathArgument key) {
  73         this.value.remove(key);
  74         return this;
  75     }
  76
  77     @Override
  78     public SystemLeafSetNode<T> build() {
  79         return new ImmutableLeafSetNode<>(nodeIdentifier, MapAdaptor.getDefaultInstance().optimize(value));
  80     }
  81
  82     @Override
  83     public ImmutableLeafSetNodeBuilder<T> withNodeIdentifier(final NodeIdentifier withNodeIdentifier) {
  84         this.nodeIdentifier = withNodeIdentifier;
  85         return this;
  86     }
  87
  88     @Override
  89     public ImmutableLeafSetNodeBuilder<T> withValue(final Collection<LeafSetEntryNode<T>> withValue) {
  90         for (final LeafSetEntryNode<T> leafSetEntry : withValue) {
  91             withChild(leafSetEntry);
  92         }
  93         return this;
  94     }
  95
  96     @Override
  97     public ImmutableLeafSetNodeBuilder<T> withChildValue(final T childValue) {
  98         return withChild(ImmutableLeafSetEntryNodeBuilder.<T>create()
  99             .withNodeIdentifier(new NodeWithValue<>(nodeIdentifier.getNodeType(), childValue))
 100             .withValue(childValue).build());
 101     }
 102
 103
 104     @Override
 105     public ImmutableLeafSetNodeBuilder<T> addChild(final LeafSetEntryNode<T> child) {
 106         return withChild(child);
 107     }
 108
 109     @Override
 110     public ImmutableLeafSetNodeBuilder<T> removeChild(final PathArgument key) {
 111         return withoutChild(key);
 112     }
 113
 114     protected static final class ImmutableLeafSetNode<T>
 115             extends AbstractImmutableNormalizedValueNode<NodeIdentifier, SystemLeafSetNode<?>,
 116                 Collection<@NonNull LeafSetEntryNode<T>>>
 117             implements SystemLeafSetNode<T> {
 118
 119         private final Map<NodeWithValue<?>, LeafSetEntryNode<T>> children;
 120
 121         ImmutableLeafSetNode(final NodeIdentifier nodeIdentifier,
 122                 final Map<NodeWithValue<?>, LeafSetEntryNode<T>> children) {
 123             super(nodeIdentifier, UnmodifiableCollection.create(children.values()));
 124             this.children = children;
 125         }
 126
 127         @Override
 128         public LeafSetEntryNode<T> childByArg(final NodeWithValue<?> child) {
 129             return children.get(child);
 130         }
 131
 132         @Override
 133         public int size() {
 134             return children.size();
 135         }
 136
 137         @Override
 138         protected Class<SystemLeafSetNode<?>> implementedType() {
 139             return (Class) SystemLeafSetNode.class;
 140         }
 141
 142         @Override
 143         protected int valueHashCode() {
 144             return children.hashCode();
 145         }
 146
 147         @Override
 148         protected boolean valueEquals(final SystemLeafSetNode<?> other) {
 149             return children.equals(((ImmutableLeafSetNode<?>) other).children);
 150         }
 151     }
 152 }