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 import org.opendaylight.yangtools.yang.data.impl.schema.nodes.AbstractImmutableNormalizedValueNode;
  23
  24 import com.google.common.collect.ImmutableList;
  25 import com.google.common.collect.Iterables;
  26
  27 public class ImmutableUnkeyedListNodeBuilder implements CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> {
  28
  29     private List<UnkeyedListEntryNode> value;
  30     private InstanceIdentifier.NodeIdentifier nodeIdentifier;
  31     private boolean dirty = false;
  32
  33     protected ImmutableUnkeyedListNodeBuilder() {
  34         this.value = new LinkedList<>();
  35         this.dirty = false;
  36     }
  37
  38     protected ImmutableUnkeyedListNodeBuilder(final ImmutableUnkeyedListNode node) {
  39         this.nodeIdentifier = node.getIdentifier();
  40         this.value = new LinkedList<>();
  41         Iterables.addAll(value, node.getValue());
  42         this.dirty = true;
  43     }
  44
  45     public static CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> create() {
  46         return new ImmutableUnkeyedListNodeBuilder();
  47     }
  48
  49     public static CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> create(final UnkeyedListNode node) {
  50         if (!(node instanceof ImmutableUnkeyedListNode)) {
  51             throw new UnsupportedOperationException(String.format("Cannot initialize from class %s", node.getClass()));
  52         }
  53
  54         return new ImmutableUnkeyedListNodeBuilder((ImmutableUnkeyedListNode) node);
  55     }
  56
  57     private void checkDirty() {
  58         if (dirty) {
  59             value = new LinkedList<>(value);
  60             dirty = false;
  61         }
  62     }
  63
  64     @Override
  65     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withChild(final UnkeyedListEntryNode child) {
  66         checkDirty();
  67         this.value.add(child);
  68         return this;
  69     }
  70
  71     @Override
  72     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withoutChild(
  73             final InstanceIdentifier.PathArgument key) {
  74         checkDirty();
  75         throw new UnsupportedOperationException("Children does not have identifiers.");
  76     }
  77
  78     @Override
  79     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withValue(final List<UnkeyedListEntryNode> value) {
  80         // TODO replace or putAll ?
  81         for (final UnkeyedListEntryNode UnkeyedListEntryNode : value) {
  82             withChild(UnkeyedListEntryNode);
  83         }
  84
  85         return this;
  86     }
  87
  88     @Override
  89     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> withNodeIdentifier(
  90             final InstanceIdentifier.NodeIdentifier nodeIdentifier) {
  91         this.nodeIdentifier = nodeIdentifier;
  92         return this;
  93     }
  94
  95     @Override
  96     public UnkeyedListNode build() {
  97         dirty = true;
  98         return new ImmutableUnkeyedListNode(nodeIdentifier, ImmutableList.copyOf(value));
  99     }
 100
 101     @Override
 102     public CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> addChild(final UnkeyedListEntryNode child) {
 103         return withChild(child);
 104     }
 105
 106     @Override
 107     public NormalizedNodeContainerBuilder<NodeIdentifier, PathArgument, UnkeyedListEntryNode, UnkeyedListNode> removeChild(
 108             final PathArgument key) {
 109         return withoutChild(key);
 110     }
 111
 112     protected static final class ImmutableUnkeyedListNode extends
 113             AbstractImmutableNormalizedValueNode<InstanceIdentifier.NodeIdentifier, Iterable<UnkeyedListEntryNode>>
 114             implements Immutable, UnkeyedListNode {
 115
 116         private final ImmutableList<UnkeyedListEntryNode> children;
 117
 118         ImmutableUnkeyedListNode(final InstanceIdentifier.NodeIdentifier nodeIdentifier,
 119                 final ImmutableList<UnkeyedListEntryNode> children) {
 120             super(nodeIdentifier, children);
 121             this.children = children;
 122         }
 123
 124         @Override
 125         protected int valueHashCode() {
 126             return children.hashCode();
 127         }
 128
 129         @Override
 130         protected boolean valueEquals(final AbstractImmutableNormalizedNode<?, ?> other) {
 131             return children.equals(((ImmutableUnkeyedListNode) other).children);
 132         }
 133
 134         @Override
 135         public UnkeyedListEntryNode getChild(final int position) {
 136             return children.get(position);
 137         }
 138
 139         @Override
 140         public int getSize() {
 141             return children.size();
 142         }
 143     }
 144 }