org.jrdf.graph.index.graphhandler.mem
Class GraphHandler012

java.lang.Object
  org.jrdf.graph.index.graphhandler.AbstractGraphHandler
      org.jrdf.graph.index.graphhandler.mem.GraphHandler012

All Implemented Interfaces:

GraphHandler

public class GraphHandler012
extends AbstractGraphHandler
implements GraphHandler

Handles operations on 012 index.

Version:

$Revision: 1045 $

Author:

Andrew Newman

Field Summary

Fields inherited from class org.jrdf.graph.index.graphhandler.AbstractGraphHandler

nodePool

Constructor Summary

GraphHandler012(LongIndex[] indexes, NodePool nodePool)

Method Summary

Node[]	createTriple(Long[] nodes) Creates the globalized nodes based on the internal representation of the nodes.
Iterator<Map.Entry<Long,Map<Long,Set<Long>>>>	getEntries() Returns an iterator over an internal representation of the graph in the fixed order based on the underlying index.
void	remove(Long[] currentNodes) Removes a triple from the other indexes of the graph.

Methods inherited from class org.jrdf.graph.index.graphhandler.AbstractGraphHandler

dumpIndex, reconstructIndices

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jrdf.graph.index.graphhandler.GraphHandler

reconstructIndices

Constructor Detail

GraphHandler012

public GraphHandler012(LongIndex[] indexes,
                       NodePool nodePool)

Method Detail

getEntries

public Iterator<Map.Entry<Long,Map<Long,Set<Long>>>> getEntries()

Description copied from interface: GraphHandler

Returns an iterator over an internal representation of the graph in the fixed order based on the underlying index.

Specified by:

getEntries in interface GraphHandler

Returns:

an iterator over an internal representation of the graph in the fixed order based on the underlying index.

createTriple

public Node[] createTriple(Long[] nodes)
                    throws TripleFactoryException

Description copied from interface: GraphHandler

Creates the globalized nodes based on the internal representation of the nodes. This may move to the NodePool interface.

Specified by:

createTriple in interface GraphHandler

Parameters:

nodes - an array of three triple values to create.

Returns:

an array of three nodes.

Throws:

TripleFactoryException - if the nodes could not be mapped - the nodes must refer to something that already have existed.

remove

public void remove(Long[] currentNodes)
            throws GraphException

Description copied from interface: GraphHandler

Removes a triple from the other indexes of the graph. For example, if this is the 012 GraphHandler it will remove the 120 and 201.

Specified by:

remove in interface GraphHandler

Parameters:

currentNodes - the array of nodes to remove.

Throws:

GraphException - if the nodes do not exist.