org.janusgraph.graphdb.tinkerpop.optimize.step.fetcher

Class MultiQueriableStepBatchFetcher<R>

java.lang.Object

org.janusgraph.graphdb.tinkerpop.optimize.step.fetcher.MultiQueriableStepBatchFetcher<R>

Direct Known Subclasses:

HasStepBatchFetcher, LabelStepBatchFetcher, PropertiesStepBatchFetcher, VertexStepBatchFetcher

public abstract class MultiQueriableStepBatchFetcher<R>
extends Object

Common logic for MultiQueriable steps to prefetch data for multiple vertices using multiQuery.

Constructor Summary

Constructors

Constructor and Description
MultiQueriableStepBatchFetcher(int batchSize)

Method Summary

Modifier and Type	Method and Description
R	fetchData(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal, org.apache.tinkerpop.gremlin.structure.Vertex forGeneralVertex, int traverserLoops)
protected abstract Map<JanusGraphVertex,R>	makeQueryAndExecute(JanusGraphMultiVertexQuery multiQuery)
protected Collection<JanusGraphVertex>	nextBatch()
protected Map<JanusGraphVertex,R>	prefetchNextBatch(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal, JanusGraphVertex requiredFetchVertex)
void	refreshIfLoopsAreReset(int traverserLoops, JanusGraphVertex forVertex)
void	registerCurrentLoopFutureVertexForPrefetching(org.apache.tinkerpop.gremlin.structure.Vertex forGeneralVertex, int traverserLoops)
void	registerFirstNewLoopFutureVertexForPrefetching(org.apache.tinkerpop.gremlin.structure.Vertex forGeneralVertex)
void	registerNextLoopFutureVertexForPrefetching(org.apache.tinkerpop.gremlin.structure.Vertex forGeneralVertex, int traverserLoops)
void	setBatchSize(int batchSize)

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiQueriableStepBatchFetcher

public MultiQueriableStepBatchFetcher(int batchSize)

Method Detail

registerCurrentLoopFutureVertexForPrefetching

public void registerCurrentLoopFutureVertexForPrefetching(org.apache.tinkerpop.gremlin.structure.Vertex forGeneralVertex,
                                                          int traverserLoops)

registerNextLoopFutureVertexForPrefetching

public void registerNextLoopFutureVertexForPrefetching(org.apache.tinkerpop.gremlin.structure.Vertex forGeneralVertex,
                                                       int traverserLoops)

registerFirstNewLoopFutureVertexForPrefetching

public void registerFirstNewLoopFutureVertexForPrefetching(org.apache.tinkerpop.gremlin.structure.Vertex forGeneralVertex)

refreshIfLoopsAreReset

public void refreshIfLoopsAreReset(int traverserLoops,
                                   JanusGraphVertex forVertex)

setBatchSize

public void setBatchSize(int batchSize)

fetchData

public R fetchData(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal,
                   org.apache.tinkerpop.gremlin.structure.Vertex forGeneralVertex,
                   int traverserLoops)

prefetchNextBatch

protected Map<JanusGraphVertex,R> prefetchNextBatch(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal,
                                                    JanusGraphVertex requiredFetchVertex)

nextBatch

protected Collection<JanusGraphVertex> nextBatch()

makeQueryAndExecute

protected abstract Map<JanusGraphVertex,R> makeQueryAndExecute(JanusGraphMultiVertexQuery multiQuery)