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