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 java.util.Collection;
  12 import java.util.Collections;
  13 import java.util.HashMap;
  14 import java.util.Map;
  15 import org.opendaylight.yangtools.concepts.Immutable;
  16 import org.opendaylight.yangtools.util.MapAdaptor;
  17 import org.opendaylight.yangtools.util.UnmodifiableCollection;
  18 import org.opendaylight.yangtools.yang.common.QName;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  20 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
  21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  22 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
  23 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
  24 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.ListNodeBuilder;
  25 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
  26 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedNode;
  27 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedValueNode;
  28
  29 public class ImmutableLeafSetNodeBuilder<T> implements ListNodeBuilder<T, LeafSetEntryNode<T>> {
  30     private static final int DEFAULT_CAPACITY = 4;
  31     private final Map<NodeWithValue, LeafSetEntryNode<T>> value;
  32     private NodeIdentifier nodeIdentifier;
  33
  34     protected ImmutableLeafSetNodeBuilder() {
  35         value = new HashMap<>(DEFAULT_CAPACITY);
  36     }
  37
  38     protected ImmutableLeafSetNodeBuilder(final int sizeHint) {
  39         value = new HashMap<>(sizeHint * 4 / 3);
  40     }
  41
  42     protected ImmutableLeafSetNodeBuilder(final ImmutableLeafSetNode<T> node) {
  43         nodeIdentifier = node.getIdentifier();
  44         value = MapAdaptor.getDefaultInstance().takeSnapshot(node.children);
  45     }
  46
  47     public static <T> ListNodeBuilder<T, LeafSetEntryNode<T>> create() {
  48         return new ImmutableLeafSetNodeBuilder<>();
  49     }
  50
  51     public static <T> ListNodeBuilder<T, LeafSetEntryNode<T>> create(final int sizeHint) {
  52         return new ImmutableLeafSetNodeBuilder<>(sizeHint);
  53     }
  54
  55     public static <T> ListNodeBuilder<T, LeafSetEntryNode<T>> create(final LeafSetNode<T> node) {
  56         if (!(node instanceof ImmutableLeafSetNode<?>)) {
  57             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  58         }
  59
  60         return new ImmutableLeafSetNodeBuilder<T>((ImmutableLeafSetNode<T>) node);
  61     }
  62
  63     @Override
  64     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChild(final LeafSetEntryNode<T> child) {
  65         this.value.put(child.getIdentifier(), child);
  66         return this;
  67     }
  68
  69     @Override
  70     public ListNodeBuilder<T, LeafSetEntryNode<T>> withoutChild(final PathArgument key) {
  71         this.value.remove(key);
  72         return this;
  73     }
  74
  75     @Override
  76     public LeafSetNode<T> build() {
  77         return new ImmutableLeafSetNode<>(nodeIdentifier, MapAdaptor.getDefaultInstance().optimize(value));
  78     }
  79
  80     @Override
  81     public ListNodeBuilder<T, LeafSetEntryNode<T>> withNodeIdentifier(final NodeIdentifier nodeIdentifier) {
  82         this.nodeIdentifier = nodeIdentifier;
  83         return this;
  84     }
  85
  86     @Override
  87     public ListNodeBuilder<T, LeafSetEntryNode<T>> withValue(final Collection<LeafSetEntryNode<T>> value) {
  88         for (final LeafSetEntryNode<T> leafSetEntry : value) {
  89             withChild(leafSetEntry);
  90         }
  91         return this;
  92     }
  93
  94
  95     @Override
  96     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChildValue(final T value, final Map<QName, String> attributes) {
  97         final ImmutableLeafSetEntryNodeBuilder<T> b = ImmutableLeafSetEntryNodeBuilder.create();
  98         b.withNodeIdentifier(new NodeWithValue(nodeIdentifier.getNodeType(), value));
  99         b.withValue(value);
 100         b.withAttributes(attributes);
 101         return withChild(b.build());
 102     }
 103
 104     @Override
 105     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChildValue(final T value) {
 106         return withChildValue(value, Collections.<QName,String>emptyMap());
 107     }
 108
 109     protected final static class ImmutableLeafSetNode<T> extends
 110             AbstractImmutableNormalizedValueNode<NodeIdentifier, Collection<LeafSetEntryNode<T>>> implements
 111             Immutable, LeafSetNode<T> {
 112
 113         private final Map<NodeWithValue, LeafSetEntryNode<T>> children;
 114
 115         ImmutableLeafSetNode(final NodeIdentifier nodeIdentifier, final Map<NodeWithValue, LeafSetEntryNode<T>> children) {
 116             super(nodeIdentifier, UnmodifiableCollection.create(children.values()));
 117             this.children = children;
 118         }
 119
 120         @Override
 121         public Optional<LeafSetEntryNode<T>> getChild(final NodeWithValue child) {
 122             return Optional.fromNullable(children.get(child));
 123         }
 124
 125         @Override
 126         protected int valueHashCode() {
 127             return children.hashCode();
 128         }
 129
 130         @Override
 131         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 132             return children.equals(((ImmutableLeafSetNode<?>) other).children);
 133         }
 134     }
 135
 136     @Override
 137     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>> addChild(
 138             final LeafSetEntryNode<T> child) {
 139         return withChild(child);
 140     }
 141
 142     @Override
 143     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>> removeChild(
 144             final PathArgument key) {
 145         return withoutChild(key);
 146     }
 147
 148 }