yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/OrderedLeafSetModificationStrategy.java

   1 /*
   2  * Copyright (c) 2014 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.tree;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11
  12 import com.google.common.base.Optional;
  13 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  14 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
  15 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  16 import org.opendaylight.yangtools.yang.data.api.schema.OrderedLeafSetNode;
  17 import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType;
  18 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
  19 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableOrderedLeafSetNodeBuilder;
  20 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  21
  22 final class OrderedLeafSetModificationStrategy extends AbstractNodeContainerModificationStrategy {
  23     private final Optional<ModificationApplyOperation> entryStrategy;
  24
  25     @SuppressWarnings({ "unchecked", "rawtypes" })
  26     OrderedLeafSetModificationStrategy(final LeafListSchemaNode schema, final TreeType treeType) {
  27         super((Class) LeafSetNode.class, treeType);
  28         entryStrategy = Optional.<ModificationApplyOperation> of(new LeafSetEntryModificationStrategy(schema));
  29     }
  30
  31     @Override
  32     protected ChildTrackingPolicy getChildPolicy() {
  33         return ChildTrackingPolicy.ORDERED;
  34     }
  35
  36     @SuppressWarnings("rawtypes")
  37     @Override
  38     protected NormalizedNodeContainerBuilder createBuilder(final NormalizedNode<?, ?> original) {
  39         checkArgument(original instanceof OrderedLeafSetNode<?>);
  40         return ImmutableOrderedLeafSetNodeBuilder.create((OrderedLeafSetNode<?>) original);
  41     }
  42
  43     @Override
  44     protected NormalizedNode<?, ?> createEmptyValue(NormalizedNode<?, ?> original) {
  45         checkArgument(original instanceof OrderedLeafSetNode<?>);
  46         return ImmutableOrderedLeafSetNodeBuilder.create()
  47                 .withNodeIdentifier(((OrderedLeafSetNode<?>) original).getIdentifier()).build();
  48     }
  49
  50     @Override
  51     public Optional<ModificationApplyOperation> getChild(final YangInstanceIdentifier.PathArgument identifier) {
  52         if (identifier instanceof YangInstanceIdentifier.NodeWithValue) {
  53             return entryStrategy;
  54         }
  55         return Optional.absent();
  56     }
  57 }