opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/InMemoryDataTreeFactory.java

   1 package org.opendaylight.controller.md.sal.dom.store.impl.tree.data;
   2
   3 import org.opendaylight.controller.md.sal.dom.store.impl.tree.DataTreeFactory;
   4 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.NodeIdentifier;
   5 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
   6 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
   7 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
   8
   9 /**
  10  * A factory for creating in-memory data trees.
  11  */
  12 public final class InMemoryDataTreeFactory implements DataTreeFactory {
  13         private static final InMemoryDataTreeFactory INSTANCE = new InMemoryDataTreeFactory();
  14
  15         private InMemoryDataTreeFactory() {
  16                 // Never instantiated externally
  17         }
  18
  19         @Override
  20         public InMemoryDataTree create() {
  21                 final NodeIdentifier root = new NodeIdentifier(SchemaContext.NAME);
  22                 final NormalizedNode<?, ?> data = Builders.containerBuilder().withNodeIdentifier(root).build();
  23
  24                 return new InMemoryDataTree(StoreMetadataNode.createEmpty(data), null);
  25         }
  26
  27         /**
  28          * Get an instance of this factory. This method cannot fail.
  29          *
  30          * @return Data tree factory instance.
  31          */
  32         public static final InMemoryDataTreeFactory getInstance() {
  33                 return INSTANCE;
  34         }
  35 }