data/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableUserLeafSetNodeBuilder.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 org.eclipse.jdt.annotation.NonNull;
  16 import org.opendaylight.yangtools.util.UnmodifiableCollection;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  20 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
  21 import org.opendaylight.yangtools.yang.data.api.schema.UserLeafSetNode;
  22 import org.opendaylight.yangtools.yang.data.api.schema.builder.ListNodeBuilder;
  23 import org.opendaylight.yangtools.yang.data.spi.node.AbstractNormalizedNode;
  24
  25 public class ImmutableUserLeafSetNodeBuilder<T> implements ListNodeBuilder<T, UserLeafSetNode<T>> {
  26     private Map<NodeWithValue, LeafSetEntryNode<T>> value;
  27     private NodeIdentifier nodeIdentifier;
  28     private boolean dirty;
  29
  30     ImmutableUserLeafSetNodeBuilder() {
  31         value = new LinkedHashMap<>();
  32         dirty = false;
  33     }
  34
  35     ImmutableUserLeafSetNodeBuilder(final ImmutableUserLeafSetNode<T> node) {
  36         nodeIdentifier = node.name();
  37         value = node.getChildren();
  38         dirty = true;
  39     }
  40
  41     public static <T> @NonNull ListNodeBuilder<T, UserLeafSetNode<T>> create() {
  42         return new ImmutableUserLeafSetNodeBuilder<>();
  43     }
  44
  45     public static <T> @NonNull ListNodeBuilder<T, UserLeafSetNode<T>> create(
  46             final UserLeafSetNode<T> node) {
  47         if (!(node instanceof ImmutableUserLeafSetNode<?>)) {
  48             throw new UnsupportedOperationException("Cannot initialize from class " + node.getClass());
  49         }
  50
  51         return new ImmutableUserLeafSetNodeBuilder<>((ImmutableUserLeafSetNode<T>) node);
  52     }
  53
  54     private void checkDirty() {
  55         if (dirty) {
  56             value = new LinkedHashMap<>(value);
  57             dirty = false;
  58         }
  59     }
  60
  61     @Override
  62     public ImmutableUserLeafSetNodeBuilder<T> withChild(final LeafSetEntryNode<T> child) {
  63         checkDirty();
  64         value.put(child.name(), child);
  65         return this;
  66     }
  67
  68     @Override
  69     public ImmutableUserLeafSetNodeBuilder<T> withoutChild(final PathArgument key) {
  70         checkDirty();
  71         value.remove(key);
  72         return this;
  73     }
  74
  75     @Override
  76     public UserLeafSetNode<T> build() {
  77         dirty = true;
  78         return new ImmutableUserLeafSetNode<>(nodeIdentifier, value);
  79     }
  80
  81     @Override
  82     public ImmutableUserLeafSetNodeBuilder<T> withNodeIdentifier(final NodeIdentifier withNodeIdentifier) {
  83         nodeIdentifier = withNodeIdentifier;
  84         return this;
  85     }
  86
  87     @Override
  88     public ImmutableUserLeafSetNodeBuilder<T> withValue(final Collection<LeafSetEntryNode<T>> withValue) {
  89         checkDirty();
  90         for (final LeafSetEntryNode<T> leafSetEntry : withValue) {
  91             withChild(leafSetEntry);
  92         }
  93         return this;
  94     }
  95
  96     @Override
  97     public ImmutableUserLeafSetNodeBuilder<T> withChildValue(final T childValue) {
  98         return withChild(ImmutableLeafSetEntryNodeBuilder.<T>create()
  99             .withNodeIdentifier(new NodeWithValue<>(nodeIdentifier.getNodeType(), childValue))
 100             .withValue(childValue).build());
 101     }
 102
 103     protected static final class ImmutableUserLeafSetNode<T>
 104             extends AbstractNormalizedNode<NodeIdentifier, UserLeafSetNode<?>>
 105             implements UserLeafSetNode<T> {
 106         private final Map<NodeWithValue, LeafSetEntryNode<T>> children;
 107
 108         ImmutableUserLeafSetNode(final NodeIdentifier nodeIdentifier,
 109                 final Map<NodeWithValue, LeafSetEntryNode<T>> children) {
 110             super(nodeIdentifier);
 111             this.children = children;
 112         }
 113
 114         @Override
 115         public LeafSetEntryNode<T> childByArg(final NodeWithValue child) {
 116             return children.get(child);
 117         }
 118
 119         @Override
 120         public LeafSetEntryNode<T> childAt(final int position) {
 121             return Iterables.get(children.values(), position);
 122         }
 123
 124         @Override
 125         public int size() {
 126             return children.size();
 127         }
 128
 129         @Override
 130         public Collection<LeafSetEntryNode<T>> body() {
 131             return UnmodifiableCollection.create(children.values());
 132         }
 133
 134         @Override
 135         protected Class<UserLeafSetNode<?>> implementedType() {
 136             return (Class) UserLeafSetNode.class;
 137         }
 138
 139         @Override
 140         protected int valueHashCode() {
 141             return children.hashCode();
 142         }
 143
 144         @Override
 145         protected boolean valueEquals(final UserLeafSetNode<?> other) {
 146             if (other instanceof ImmutableUserLeafSetNode<?> immutableOther) {
 147                 return children.equals(immutableOther.children);
 148             }
 149             // Note: performs a size() check first
 150             return Iterables.elementsEqual(children.values(), other.body());
 151         }
 152
 153         private Map<NodeWithValue, LeafSetEntryNode<T>> getChildren() {
 154             return Collections.unmodifiableMap(children);
 155         }
 156     }
 157
 158     @Override
 159     public ImmutableUserLeafSetNodeBuilder<T> addChild(final LeafSetEntryNode<T> child) {
 160         return withChild(child);
 161     }
 162
 163     @Override
 164     public ImmutableUserLeafSetNodeBuilder<T> removeChild(final PathArgument key) {
 165         return withoutChild(key);
 166     }
 167 }