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