little hypergraphdb demo

gistfile1.scala

package hgtest.storage

import org.hypergraphdb._
import collection.JavaConversions._
import org.hypergraphdb.HGQuery.hg
import org.hypergraphdb.query.AtomTypeCondition
import org.hypergraphdb.util.HGUtils
import storage.bje.BJEStorageImplementation


object Test extends App{
    var config: HGConfiguration = new HGConfiguration
    val graph = new HyperGraph();
    config.setStoreImplementation(new BJEStorageImplementation); config
    graph.setConfig(config)
   graph.open("/home/ingvar/workspace/blankHgdbDBdir/")
 
  val handles1 = (1 to 3).map(i => hg.assertAtom(graph, i.toString)).toArray[HGHandle]
  val handles2 = Vector(2, 3, 6, 8).map(i => hg.assertAtom(graph, i.toString)).toArray[HGHandle]
  val combo1 = graph.add(new HGPlainLink(handles1:_*))
  val combo2 = graph.add(new HGPlainLink(handles2:_*))
  val query23 : java.util.List[HGPersistentHandle] = hg.findAll(graph, hg.link(handles2(0), handles2(1)))
  val found = if (query23.size > 0) query23.forall{result => result.equals(combo1.getPersistent) ||result.equals(combo2.getPersistent) } else false

  println("found both links pointing to 2 and 3?" + found)
// => prints true
}