odl-mdsal-examples

import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeRef;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;

public static final InstanceIdentifier<Nodes>    NODES_IID    =
                           InstanceIdentifier.builder(Nodes.class).build();
public static final InstanceIdentifier<Topology> TOPOLOGY_IID =
                           InstanceIdentifier.builder(NetworkTopology.class)
                           .child(Topology.class, new TopologyKey(new TopologyId("flow:1")))
                           .build();

public static InstanceIdentifier<Node> nodeIId(NodeId nodeId) {
    return NODES_IID.child(Node.class, new NodeKey(nodeId));
}

public static InstanceIdentifier<Node> nodeIId(org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId nodeId) {
    return NODES_IID.child(Node.class, new NodeKey(new NodeId(nodeId.getValue())));
}

public static NodeRef nodeRef(NodeId nodeId) {
    return new NodeRef(nodeIId(nodeId));
}

public static InstanceIdentifier<NodeConnector> nodeConnectorIId(NodeId nodeId,
                                                                 NodeConnectorId ncId) {
    return NODES_IID.child(Node.class, new NodeKey(nodeId))
                              .child(NodeConnector.class, new NodeConnectorKey(ncId));
}

public static NodeConnectorRef nodeConnectorRef(NodeId nodeId, NodeConnectorId ncId) {
    return new NodeConnectorRef(nodeConnectorIId(nodeId, ncId));
}

public static Optional<Node> node(NodeId nodeId, DataBroker dataBroker) {
    try {
        return dataBroker.newReadOnlyTransaction()
                  .read(LogicalDatastoreType.OPERATIONAL,
                           nodeIId(nodeId)).get();
    } catch (InterruptedException | ExecutionException e) {
        return Optional.absent();
    }
}