org.aksw.commons.graph
Class GraphBackedResourceCache

java.lang.Object
  org.aksw.commons.graph.GraphBackedResourceCache

public class GraphBackedResourceCache
extends Object

This class is not finished yet.

Some thoughts: It would be cool to have a "construct cache:"

E.g. Construct { ?p :hasName ?name . ?p :hasAddress ?a . } The graph pattern can be decomposed into clauses: (And(.)

Our cache function is vars(Query) -> Model (e.g. (?p ?a) -> Model) (Hm actually it doesn't matter whether its a model or not)

Whenever a triple is inserted, that satisfied one of the clauses, we need to invalidate a corresponding cache entry.

Author:

raven

Constructor Summary

GraphBackedResourceCache(org.aksw.commons.graph.SparqlEndpoint graphDAO)

Method Summary

void	applyChanges()
void	insert(com.hp.hpl.jena.rdf.model.Model model)
com.hp.hpl.jena.rdf.model.Model	lookup(Collection<com.hp.hpl.jena.rdf.model.Resource> resources)
static String	myToString(Collection<?> collection)
void	remove(com.hp.hpl.jena.rdf.model.Model model)
static Set<List<Object>>	toKeys(Collection<com.hp.hpl.jena.rdf.model.Resource> resources)

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphBackedResourceCache

public GraphBackedResourceCache(org.aksw.commons.graph.SparqlEndpoint graphDAO)

Method Detail

lookup

public com.hp.hpl.jena.rdf.model.Model lookup(Collection<com.hp.hpl.jena.rdf.model.Resource> resources)
                                       throws Exception

Throws:

Exception

insert

public void insert(com.hp.hpl.jena.rdf.model.Model model)
            throws Exception

Throws:

Exception

remove

public void remove(com.hp.hpl.jena.rdf.model.Model model)
            throws Exception

Throws:

Exception

applyChanges

public void applyChanges()
                  throws Exception

Throws:

Exception

myToString

public static String myToString(Collection<?> collection)

toKeys

public static Set<List<Object>> toKeys(Collection<com.hp.hpl.jena.rdf.model.Resource> resources)