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
  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> ListNodeBuilder<T, LeafSetEntryNode<T>> create() {
  54         return new ImmutableLeafSetNodeBuilder<>();
  55     }
  56
  57     public static <T> ListNodeBuilder<T, LeafSetEntryNode<T>> create(final int sizeHint) {
  58         return new ImmutableLeafSetNodeBuilder<>(sizeHint);
  59     }
  60
  61     public static <T> 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 nodeIdentifier) {
  88         this.nodeIdentifier = nodeIdentifier;
  89         return this;
  90     }
  91
  92     @Override
  93     public ListNodeBuilder<T, LeafSetEntryNode<T>> withValue(final Collection<LeafSetEntryNode<T>> value) {
  94         for (final LeafSetEntryNode<T> leafSetEntry : value) {
  95             withChild(leafSetEntry);
  96         }
  97         return this;
  98     }
  99
 100
 101     @Override
 102     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChildValue(final T value, final Map<QName, String> attributes) {
 103         final ImmutableLeafSetEntryNodeBuilder<T> b = ImmutableLeafSetEntryNodeBuilder.create();
 104         b.withNodeIdentifier(new NodeWithValue<>(nodeIdentifier.getNodeType(), value));
 105         b.withValue(value);
 106         b.withAttributes(attributes);
 107         return withChild(b.build());
 108     }
 109
 110     @Override
 111     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChildValue(final T value) {
 112         return withChildValue(value, Collections.emptyMap());
 113     }
 114
 115     protected static final class ImmutableLeafSetNode<T> extends
 116             AbstractImmutableNormalizedValueNode<NodeIdentifier, Collection<LeafSetEntryNode<T>>> implements
 117             Immutable, LeafSetNode<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 Optional<LeafSetEntryNode<T>> getChild(final NodeWithValue child) {
 129             return Optional.fromNullable(children.get(child));
 130         }
 131
 132         @Override
 133         protected int valueHashCode() {
 134             return children.hashCode();
 135         }
 136
 137         @Override
 138         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 139             return children.equals(((ImmutableLeafSetNode<?>) other).children);
 140         }
 141     }
 142
 143     @Override
 144     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>> addChild(
 145             final LeafSetEntryNode<T> child) {
 146         return withChild(child);
 147     }
 148
 149     @Override
 150     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>>
 151             removeChild(final PathArgument key) {
 152         return withoutChild(key);
 153     }
 154
 155 }