Package oracle.spatial.network.lod

Provides support for the Load-On-Demand (LOD) approach of network analysis in the Oracle Spatial network data model, which is documented in Oracle Spatial Topology and Network Data Models.

This package provides methods to
- read network information,
- perform network analysis,
- store analysis results, and
- configure the load-on-demand settings, such as cache size, caching policy, load network from the node/link tables or from the blobs, etc.,

LODNetworkManager is the entry point for all the functionalities provided by this package.
To read network information, first obtain a NetworIO object from the NetworkManager, and then call various network IO methods provided by NetworkIO. For example, 

  NetworkIO networkIO    = LODNetworkManager.getCachedNetworkIO(myConnection, "MYNETWORK", "MYNETWORK");
  int numberOfPartitions = networkIO.readNumberOfPartitions(1);
  int numberOfNodes      = networkIO.readNumberOfNodes(1);
  LogicalPartition part  = networkIO.readLogicalPartition(1, 1, true, true);
To analyze a network, first obtain a NetworkAnalyst object from the NetworkManager, and then call the various network analysis functions provided by the network analyst. For example, 
  NetworkAnalyst analyst = LODNetworkManager.getNetworkAnalyst(networkIO);
  LogicalSubPath path = analyst.shortestPathDijkstra(
                          new PointOnNet(2000), new PointOnNet(6700), null);
  LogicalSubPath[] paths = analyst.nearestNeighbors(
                             new PointOnNet(2000), 10, null, null);
To configure load-on-demand settings, create or edit your LOD configuration xml file, obtain the ConfigManager object from the NetworkManager, and then call the loadConfig method to load the configuration. For example, 
  InputStream in = ClassLoader.getSystemResourceAsStream("lodconfig.xml");
  LODNetworkManager.getConfigManager().loadConfig(in);