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 java.util.LinkedList;
  11 import java.util.List;
  12
  13 import org.opendaylight.yangtools.concepts.Immutable;
  14 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  15 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.NodeIdentifier;
  16 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
  17 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  18 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
  19 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
  20 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
  21 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedNode;
  22
  23 import com.google.common.collect.ImmutableList;
  24 import com.google.common.collect.Iterables;
  25
  26 public class ImmutableUnkeyedListNodeBuilder implements CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> {
  27
  28     private List<UnkeyedListEntryNode> value;
  29     private InstanceIdentifier.NodeIdentifier nodeIdentifier;
  30     private boolean dirty = false;
  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 UnkeyedListNode node) {
  49         if (!(node instanceof ImmutableUnkeyedListNode)) {
  50             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  51         }
  52
  53         return new ImmutableUnkeyedListNodeBuilder((ImmutableUnkeyedListNode) node);
  54     }
  55
  56     private void checkDirty() {
  57         if (dirty) {
  58             value = new LinkedList<>(value);
  59             dirty = false;
  60         }
  61     }
  62
  63     @Override
  64     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withChild(final UnkeyedListEntryNode child) {
  65         checkDirty();
  66         this.value.add(child);
  67         return this;
  68     }
  69
  70     @Override
  71     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withoutChild(
  72             final InstanceIdentifier.PathArgument key) {
  73         checkDirty();
  74         throw new UnsupportedOperationException("Children does not have identifiers.");
  75     }
  76
  77     @Override
  78     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withValue(final List<UnkeyedListEntryNode> value) {
  79         // TODO replace or putAll ?
  80         for (final UnkeyedListEntryNode UnkeyedListEntryNode : value) {
  81             withChild(UnkeyedListEntryNode);
  82         }
  83
  84         return this;
  85     }
  86
  87     @Override
  88     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withNodeIdentifier(
  89             final InstanceIdentifier.NodeIdentifier nodeIdentifier) {
  90         this.nodeIdentifier = nodeIdentifier;
  91         return this;
  92     }
  93
  94     @Override
  95     public UnkeyedListNode build() {
  96         dirty = true;
  97         return new ImmutableUnkeyedListNode(nodeIdentifier, ImmutableList.copyOf(value));
  98     }
  99
 100     @Override
 101     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> addChild(final UnkeyedListEntryNode child) {
 102         return withChild(child);
 103     }
 104
 105     @Override
 106     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, UnkeyedListEntryNode, UnkeyedListNode> removeChild(
 107             final PathArgument key) {
 108         return withoutChild(key);
 109     }
 110
 111     protected static final class ImmutableUnkeyedListNode extends
 112             AbstractImmutableNormalizedNode<InstanceIdentifier.NodeIdentifier, Iterable<UnkeyedListEntryNode>>
 113             implements Immutable, UnkeyedListNode {
 114
 115         private final ImmutableList<UnkeyedListEntryNode> children;
 116
 117         ImmutableUnkeyedListNode(final InstanceIdentifier.NodeIdentifier nodeIdentifier,
 118                 final ImmutableList<UnkeyedListEntryNode> children) {
 119             super(nodeIdentifier, children);
 120             this.children = children;
 121         }
 122
 123         @Override
 124         protected int valueHashCode() {
 125             return children.hashCode();
 126         }
 127
 128         @Override
 129         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 130             return children.equals(((ImmutableUnkeyedListNode) other).children);
 131         }
 132
 133         @Override
 134         public UnkeyedListEntryNode getChild(final int position) {
 135             return children.get(position);
 136         }
 137
 138         @Override
 139         public int getSize() {
 140             return children.size();
 141         }
 142     }
 143 }