yang/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.ImmutableMap;
  11 import com.google.common.collect.Maps;
  12 import java.util.Collection;
  13 import java.util.HashMap;
  14 import java.util.Map;
  15 import java.util.Optional;
  16 import org.eclipse.jdt.annotation.NonNull;
  17 import org.opendaylight.yangtools.util.MapAdaptor;
  18 import org.opendaylight.yangtools.util.UnmodifiableCollection;
  19 import org.opendaylight.yangtools.yang.common.QName;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
  22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  23 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
  24 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
  25 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.ListNodeBuilder;
  26 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
  27 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedNode;
  28 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedValueNode;
  29
  30 public class ImmutableLeafSetNodeBuilder<T> implements ListNodeBuilder<T, LeafSetEntryNode<T>> {
  31     private static final int DEFAULT_CAPACITY = 4;
  32
  33     private final Map<NodeWithValue, LeafSetEntryNode<T>> value;
  34     private NodeIdentifier nodeIdentifier;
  35
  36     protected ImmutableLeafSetNodeBuilder() {
  37         value = new HashMap<>(DEFAULT_CAPACITY);
  38     }
  39
  40     protected ImmutableLeafSetNodeBuilder(final int sizeHint) {
  41         if (sizeHint >= 0) {
  42             value = Maps.newHashMapWithExpectedSize(sizeHint);
  43         } else {
  44             value = new HashMap<>(DEFAULT_CAPACITY);
  45         }
  46     }
  47
  48     protected ImmutableLeafSetNodeBuilder(final ImmutableLeafSetNode<T> node) {
  49         nodeIdentifier = node.getIdentifier();
  50         value = MapAdaptor.getDefaultInstance().takeSnapshot(node.children);
  51     }
  52
  53     public static <T> @NonNull ListNodeBuilder<T, LeafSetEntryNode<T>> create() {
  54         return new ImmutableLeafSetNodeBuilder<>();
  55     }
  56
  57     public static <T> @NonNull ListNodeBuilder<T, LeafSetEntryNode<T>> create(final int sizeHint) {
  58         return new ImmutableLeafSetNodeBuilder<>(sizeHint);
  59     }
  60
  61     public static <T> @NonNull ListNodeBuilder<T, LeafSetEntryNode<T>> create(final LeafSetNode<T> node) {
  62         if (!(node instanceof ImmutableLeafSetNode<?>)) {
  63             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  64         }
  65
  66         return new ImmutableLeafSetNodeBuilder<>((ImmutableLeafSetNode<T>) node);
  67     }
  68
  69     @Override
  70     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChild(final LeafSetEntryNode<T> child) {
  71         this.value.put(child.getIdentifier(), child);
  72         return this;
  73     }
  74
  75     @Override
  76     public ListNodeBuilder<T, LeafSetEntryNode<T>> withoutChild(final PathArgument key) {
  77         this.value.remove(key);
  78         return this;
  79     }
  80
  81     @Override
  82     public LeafSetNode<T> build() {
  83         return new ImmutableLeafSetNode<>(nodeIdentifier, MapAdaptor.getDefaultInstance().optimize(value));
  84     }
  85
  86     @Override
  87     public ListNodeBuilder<T, LeafSetEntryNode<T>> withNodeIdentifier(final NodeIdentifier withNodeIdentifier) {
  88         this.nodeIdentifier = withNodeIdentifier;
  89         return this;
  90     }
  91
  92     @Override
  93     public ListNodeBuilder<T, LeafSetEntryNode<T>> withValue(final Collection<LeafSetEntryNode<T>> withValue) {
  94         for (final LeafSetEntryNode<T> leafSetEntry : withValue) {
  95             withChild(leafSetEntry);
  96         }
  97         return this;
  98     }
  99
 100
 101     @Override
 102     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChildValue(final T childValue,
 103             final Map<QName, String> attributes) {
 104         final ImmutableLeafSetEntryNodeBuilder<T> b = ImmutableLeafSetEntryNodeBuilder.create();
 105         b.withNodeIdentifier(new NodeWithValue<>(nodeIdentifier.getNodeType(), childValue));
 106         b.withValue(childValue);
 107         b.withAttributes(attributes);
 108         return withChild(b.build());
 109     }
 110
 111     @Override
 112     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChildValue(final T childValue) {
 113         return withChildValue(childValue, ImmutableMap.of());
 114     }
 115
 116     protected static final class ImmutableLeafSetNode<T> extends
 117             AbstractImmutableNormalizedValueNode<NodeIdentifier, Collection<LeafSetEntryNode<T>>> implements
 118             LeafSetNode<T> {
 119
 120         private final Map<NodeWithValue, LeafSetEntryNode<T>> children;
 121
 122         ImmutableLeafSetNode(final NodeIdentifier nodeIdentifier,
 123                 final Map<NodeWithValue, LeafSetEntryNode<T>> children) {
 124             super(nodeIdentifier, UnmodifiableCollection.create(children.values()));
 125             this.children = children;
 126         }
 127
 128         @Override
 129         public Optional<LeafSetEntryNode<T>> getChild(final NodeWithValue child) {
 130             return Optional.ofNullable(children.get(child));
 131         }
 132
 133         @Override
 134         protected int valueHashCode() {
 135             return children.hashCode();
 136         }
 137
 138         @Override
 139         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 140             return children.equals(((ImmutableLeafSetNode<?>) other).children);
 141         }
 142     }
 143
 144     @Override
 145     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>> addChild(
 146             final LeafSetEntryNode<T> child) {
 147         return withChild(child);
 148     }
 149
 150     @Override
 151     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>>
 152             removeChild(final PathArgument key) {
 153         return withoutChild(key);
 154     }
 155
 156 }