yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableOrderedLeafSetNodeBuilder.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.Iterables;
  11 import java.util.Collection;
  12 import java.util.Collections;
  13 import java.util.LinkedHashMap;
  14 import java.util.Map;
  15 import java.util.Optional;
  16 import org.eclipse.jdt.annotation.NonNull;
  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.api.schema.OrderedLeafSetNode;
  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
  28 public class ImmutableOrderedLeafSetNodeBuilder<T> implements ListNodeBuilder<T, LeafSetEntryNode<T>> {
  29     private Map<NodeWithValue, LeafSetEntryNode<T>> value;
  30     private NodeIdentifier nodeIdentifier;
  31     private boolean dirty;
  32
  33     protected ImmutableOrderedLeafSetNodeBuilder() {
  34         value = new LinkedHashMap<>();
  35         dirty = false;
  36     }
  37
  38     protected ImmutableOrderedLeafSetNodeBuilder(final ImmutableOrderedLeafSetNode<T> node) {
  39         nodeIdentifier = node.getIdentifier();
  40         value = node.getChildren();
  41         dirty = true;
  42     }
  43
  44     public static <T> @NonNull ListNodeBuilder<T, LeafSetEntryNode<T>> create() {
  45         return new ImmutableOrderedLeafSetNodeBuilder<>();
  46     }
  47
  48     public static <T> @NonNull ListNodeBuilder<T, LeafSetEntryNode<T>> create(final LeafSetNode<T> node) {
  49         if (!(node instanceof ImmutableOrderedLeafSetNode<?>)) {
  50             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  51         }
  52
  53         return new ImmutableOrderedLeafSetNodeBuilder<>((ImmutableOrderedLeafSetNode<T>) node);
  54     }
  55
  56     private void checkDirty() {
  57         if (dirty) {
  58             value = new LinkedHashMap<>(value);
  59             dirty = false;
  60         }
  61     }
  62
  63     @Override
  64     public ListNodeBuilder<T, LeafSetEntryNode<T>> withChild(final LeafSetEntryNode<T> child) {
  65         checkDirty();
  66         this.value.put(child.getIdentifier(), child);
  67         return this;
  68     }
  69
  70     @Override
  71     public ListNodeBuilder<T, LeafSetEntryNode<T>> withoutChild(final PathArgument key) {
  72         checkDirty();
  73         this.value.remove(key);
  74         return this;
  75     }
  76
  77     @Override
  78     public OrderedLeafSetNode<T> build() {
  79         dirty = true;
  80         return new ImmutableOrderedLeafSetNode<>(nodeIdentifier, value);
  81     }
  82
  83     @Override
  84     public ListNodeBuilder<T, LeafSetEntryNode<T>> withNodeIdentifier(final NodeIdentifier withNodeIdentifier) {
  85         this.nodeIdentifier = withNodeIdentifier;
  86         return this;
  87     }
  88
  89     @Override
  90     public ListNodeBuilder<T, LeafSetEntryNode<T>> withValue(final Collection<LeafSetEntryNode<T>> withValue) {
  91         checkDirty();
  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 ImmutableOrderedLeafSetNode<T> extends
 106             AbstractImmutableNormalizedNode<NodeIdentifier, Collection<LeafSetEntryNode<T>>> implements
 107             OrderedLeafSetNode<T> {
 108
 109         private final Map<NodeWithValue, LeafSetEntryNode<T>> children;
 110
 111         ImmutableOrderedLeafSetNode(final NodeIdentifier nodeIdentifier,
 112                 final Map<NodeWithValue, LeafSetEntryNode<T>> children) {
 113             super(nodeIdentifier);
 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 LeafSetEntryNode<T> getChild(final int position) {
 124             return Iterables.get(children.values(), position);
 125         }
 126
 127         @Override
 128         protected int valueHashCode() {
 129             return children.hashCode();
 130         }
 131
 132         private Map<NodeWithValue, LeafSetEntryNode<T>> getChildren() {
 133             return Collections.unmodifiableMap(children);
 134         }
 135
 136         @Override
 137         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 138             return children.equals(((ImmutableOrderedLeafSetNode<?>) other).children);
 139         }
 140
 141         @Override
 142         public int getSize() {
 143             return children.size();
 144         }
 145
 146         @Override
 147         public Collection<LeafSetEntryNode<T>> getValue() {
 148             return UnmodifiableCollection.create(children.values());
 149         }
 150     }
 151
 152     @Override
 153     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>> addChild(
 154             final LeafSetEntryNode<T> child) {
 155         return withChild(child);
 156     }
 157
 158     @Override
 159     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, LeafSetEntryNode<T>, LeafSetNode<T>>
 160             removeChild(final PathArgument key) {
 161         return withoutChild(key);
 162     }
 163 }