opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/ValueNodeModificationStrategy.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  */package org.opendaylight.controller.md.sal.dom.store.impl.tree.data;
   8
   9  import static com.google.common.base.Preconditions.checkArgument;
  10
  11 import org.opendaylight.controller.md.sal.dom.store.impl.tree.DataPreconditionFailedException;
  12  import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  13  import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
  14  import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
  15  import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
  16  import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  17  import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  18  import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  19  import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  20
  21 import com.google.common.base.Optional;
  22  import com.google.common.primitives.UnsignedLong;
  23
  24  abstract class ValueNodeModificationStrategy<T extends DataSchemaNode> extends SchemaAwareApplyOperation {
  25
  26      private final T schema;
  27      private final Class<? extends NormalizedNode<?, ?>> nodeClass;
  28
  29      protected ValueNodeModificationStrategy(final T schema, final Class<? extends NormalizedNode<?, ?>> nodeClass) {
  30          super();
  31          this.schema = schema;
  32          this.nodeClass = nodeClass;
  33      }
  34
  35      @Override
  36      protected void verifyWrittenStructure(final NormalizedNode<?, ?> writtenValue) {
  37          checkArgument(nodeClass.isInstance(writtenValue), "Node should must be of type %s", nodeClass);
  38      }
  39
  40      @Override
  41      public Optional<ModificationApplyOperation> getChild(final PathArgument child) {
  42          throw new UnsupportedOperationException("Node " + schema.getPath()
  43                  + "is leaf type node. Child nodes not allowed");
  44      }
  45
  46      @Override
  47      protected StoreMetadataNode applySubtreeChange(final NodeModification modification,
  48              final StoreMetadataNode currentMeta, final UnsignedLong subtreeVersion) {
  49          throw new UnsupportedOperationException("Node " + schema.getPath()
  50                  + "is leaf type node. Subtree change is not allowed.");
  51      }
  52
  53      @Override
  54      protected StoreMetadataNode applyMerge(final NodeModification modification, final StoreMetadataNode currentMeta,
  55              final UnsignedLong subtreeVersion) {
  56          return applyWrite(modification, Optional.of(currentMeta), subtreeVersion);
  57      }
  58
  59      @Override
  60      protected StoreMetadataNode applyWrite(final NodeModification modification,
  61              final Optional<StoreMetadataNode> currentMeta, final UnsignedLong subtreeVersion) {
  62          return StoreMetadataNode.builder(subtreeVersion).setSubtreeVersion(subtreeVersion)
  63                  .setData(modification.getWrittenValue()).build();
  64      }
  65
  66      @Override
  67      protected void checkSubtreeModificationApplicable(final InstanceIdentifier path,final NodeModification modification,
  68              final Optional<StoreMetadataNode> current) throws DataPreconditionFailedException {
  69          throw new DataPreconditionFailedException(path, "Subtree modification is not allowed.");
  70      }
  71
  72      public static class LeafSetEntryModificationStrategy extends ValueNodeModificationStrategy<LeafListSchemaNode> {
  73          @SuppressWarnings({ "unchecked", "rawtypes" })
  74          protected LeafSetEntryModificationStrategy(final LeafListSchemaNode schema) {
  75              super(schema, (Class) LeafSetEntryNode.class);
  76          }
  77      }
  78
  79      public static class LeafModificationStrategy extends ValueNodeModificationStrategy<LeafSchemaNode> {
  80          @SuppressWarnings({ "unchecked", "rawtypes" })
  81          protected LeafModificationStrategy(final LeafSchemaNode schema) {
  82              super(schema, (Class) LeafNode.class);
  83          }
  84      }
  85  }