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;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  19 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  20 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  21 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  22 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
  23 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
  24 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedNode;
  25 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedValueNode;
  26
  27 public class ImmutableUnkeyedListNodeBuilder implements CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> {
  28     private List<UnkeyedListEntryNode> value;
  29     private YangInstanceIdentifier.NodeIdentifier nodeIdentifier;
  30     private boolean dirty;
  31
  32     protected ImmutableUnkeyedListNodeBuilder() {
  33         this.value = new LinkedList<>();
  34         this.dirty = false;
  35     }
  36
  37     protected ImmutableUnkeyedListNodeBuilder(final ImmutableUnkeyedListNode node) {
  38         this.nodeIdentifier = node.getIdentifier();
  39         this.value = new LinkedList<>();
  40         Iterables.addAll(value, node.getValue());
  41         this.dirty = true;
  42     }
  43
  44     public static CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> create() {
  45         return new ImmutableUnkeyedListNodeBuilder();
  46     }
  47
  48     public static CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> create(final int sizeHint) {
  49         return new ImmutableUnkeyedListNodeBuilder();
  50     }
  51
  52     public static CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> create(final UnkeyedListNode node) {
  53         if (!(node instanceof ImmutableUnkeyedListNode)) {
  54             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  55         }
  56
  57         return new ImmutableUnkeyedListNodeBuilder((ImmutableUnkeyedListNode) node);
  58     }
  59
  60     private void checkDirty() {
  61         if (dirty) {
  62             value = new LinkedList<>(value);
  63             dirty = false;
  64         }
  65     }
  66
  67     @Override
  68     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withChild(final UnkeyedListEntryNode child) {
  69         checkDirty();
  70         this.value.add(child);
  71         return this;
  72     }
  73
  74     @Override
  75     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withoutChild(
  76             final YangInstanceIdentifier.PathArgument key) {
  77         checkDirty();
  78         throw new UnsupportedOperationException("Children does not have identifiers.");
  79     }
  80
  81     @Override
  82     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withValue(final Collection<UnkeyedListEntryNode> value) {
  83         // TODO replace or putAll ?
  84         for (final UnkeyedListEntryNode UnkeyedListEntryNode : value) {
  85             withChild(UnkeyedListEntryNode);
  86         }
  87
  88         return this;
  89     }
  90
  91     @Override
  92     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withNodeIdentifier(
  93             final YangInstanceIdentifier.NodeIdentifier nodeIdentifier) {
  94         this.nodeIdentifier = nodeIdentifier;
  95         return this;
  96     }
  97
  98     @Override
  99     public UnkeyedListNode build() {
 100         dirty = true;
 101         if (value.isEmpty()) {
 102             return new EmptyImmutableUnkeyedListNode(nodeIdentifier);
 103         } else {
 104             return new ImmutableUnkeyedListNode(nodeIdentifier, ImmutableList.copyOf(value));
 105         }
 106     }
 107
 108     @Override
 109     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> addChild(final UnkeyedListEntryNode child) {
 110         return withChild(child);
 111     }
 112
 113     @Override
 114     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, UnkeyedListEntryNode, UnkeyedListNode> removeChild(
 115             final PathArgument key) {
 116         return withoutChild(key);
 117     }
 118
 119     protected static final class EmptyImmutableUnkeyedListNode extends AbstractImmutableNormalizedNode<YangInstanceIdentifier.NodeIdentifier, Iterable<UnkeyedListEntryNode>> implements Immutable, UnkeyedListNode {
 120         protected EmptyImmutableUnkeyedListNode(final NodeIdentifier nodeIdentifier) {
 121             super(nodeIdentifier);
 122         }
 123
 124         @Override
 125         public Iterable<UnkeyedListEntryNode> getValue() {
 126             return Collections.emptyList();
 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<YangInstanceIdentifier.NodeIdentifier, Iterable<UnkeyedListEntryNode>>
 152             implements Immutable, UnkeyedListNode {
 153
 154         private final ImmutableList<UnkeyedListEntryNode> children;
 155
 156         ImmutableUnkeyedListNode(final YangInstanceIdentifier.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 }