yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/builder/impl/ImmutableUnkeyedListNodeBuilder.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.ImmutableList;
  11 import com.google.common.collect.Iterables;
  12 import java.util.Collection;
  13 import java.util.Collections;
  14 import java.util.LinkedList;
  15 import java.util.List;
  16 import org.opendaylight.yangtools.concepts.Immutable;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  19 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  20 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  21 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
  22 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
  23 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedNode;
  24 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedValueNode;
  25
  26 public class ImmutableUnkeyedListNodeBuilder implements CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> {
  27     private List<UnkeyedListEntryNode> value;
  28     private NodeIdentifier nodeIdentifier;
  29     private boolean dirty;
  30
  31     protected ImmutableUnkeyedListNodeBuilder() {
  32         this.value = new LinkedList<>();
  33         this.dirty = false;
  34     }
  35
  36     protected ImmutableUnkeyedListNodeBuilder(final ImmutableUnkeyedListNode node) {
  37         this.nodeIdentifier = node.getIdentifier();
  38         this.value = new LinkedList<>();
  39         Iterables.addAll(value, node.getValue());
  40         this.dirty = true;
  41     }
  42
  43     public static CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> create() {
  44         return new ImmutableUnkeyedListNodeBuilder();
  45     }
  46
  47     public static CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> create(final int sizeHint) {
  48         return new ImmutableUnkeyedListNodeBuilder();
  49     }
  50
  51     public static CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> create(final UnkeyedListNode node) {
  52         if (!(node instanceof ImmutableUnkeyedListNode)) {
  53             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  54         }
  55
  56         return new ImmutableUnkeyedListNodeBuilder((ImmutableUnkeyedListNode) node);
  57     }
  58
  59     private void checkDirty() {
  60         if (dirty) {
  61             value = new LinkedList<>(value);
  62             dirty = false;
  63         }
  64     }
  65
  66     @Override
  67     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withChild(final UnkeyedListEntryNode child) {
  68         checkDirty();
  69         this.value.add(child);
  70         return this;
  71     }
  72
  73     @Override
  74     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withoutChild(
  75             final PathArgument key) {
  76         checkDirty();
  77         throw new UnsupportedOperationException("Children does not have identifiers.");
  78     }
  79
  80     @Override
  81     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withValue(final Collection<UnkeyedListEntryNode> value) {
  82         // TODO replace or putAll ?
  83         for (final UnkeyedListEntryNode UnkeyedListEntryNode : value) {
  84             withChild(UnkeyedListEntryNode);
  85         }
  86
  87         return this;
  88     }
  89
  90     @Override
  91     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withNodeIdentifier(
  92             final NodeIdentifier nodeIdentifier) {
  93         this.nodeIdentifier = nodeIdentifier;
  94         return this;
  95     }
  96
  97     @Override
  98     public UnkeyedListNode build() {
  99         dirty = true;
 100         if (value.isEmpty()) {
 101             return new EmptyImmutableUnkeyedListNode(nodeIdentifier);
 102         }
 103         return new ImmutableUnkeyedListNode(nodeIdentifier, ImmutableList.copyOf(value));
 104     }
 105
 106     @Override
 107     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> addChild(final UnkeyedListEntryNode child) {
 108         return withChild(child);
 109     }
 110
 111     @Override
 112     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, UnkeyedListEntryNode, UnkeyedListNode> removeChild(
 113             final PathArgument key) {
 114         return withoutChild(key);
 115     }
 116
 117     protected static final class EmptyImmutableUnkeyedListNode extends
 118             AbstractImmutableNormalizedNode<NodeIdentifier, Collection<UnkeyedListEntryNode>> implements Immutable,
 119             UnkeyedListNode {
 120         protected EmptyImmutableUnkeyedListNode(final NodeIdentifier nodeIdentifier) {
 121             super(nodeIdentifier);
 122         }
 123
 124         @Override
 125         public Collection<UnkeyedListEntryNode> getValue() {
 126             return Collections.emptySet();
 127         }
 128
 129         @Override
 130         public UnkeyedListEntryNode getChild(final int position) {
 131             throw new IndexOutOfBoundsException();
 132         }
 133
 134         @Override
 135         public int getSize() {
 136             return 0;
 137         }
 138
 139         @Override
 140         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 141             return Collections.EMPTY_LIST.equals(other.getValue());
 142         }
 143
 144         @Override
 145         protected int valueHashCode() {
 146             return Collections.EMPTY_LIST.hashCode();
 147         }
 148     }
 149
 150     protected static final class ImmutableUnkeyedListNode extends
 151             AbstractImmutableNormalizedValueNode<NodeIdentifier, Collection<UnkeyedListEntryNode>>
 152             implements Immutable, UnkeyedListNode {
 153
 154         private final ImmutableList<UnkeyedListEntryNode> children;
 155
 156         ImmutableUnkeyedListNode(final NodeIdentifier nodeIdentifier,
 157                 final ImmutableList<UnkeyedListEntryNode> children) {
 158             super(nodeIdentifier, children);
 159             this.children = children;
 160         }
 161
 162         @Override
 163         protected int valueHashCode() {
 164             return children.hashCode();
 165         }
 166
 167         @Override
 168         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 169             return children.equals(((ImmutableUnkeyedListNode) other).children);
 170         }
 171
 172         @Override
 173         public UnkeyedListEntryNode getChild(final int position) {
 174             return children.get(position);
 175         }
 176
 177         @Override
 178         public int getSize() {
 179             return children.size();
 180         }
 181     }
 182 }