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