com.hp.hpl.jena.graph.query
Class PatternStageBase

java.lang.Object
  com.hp.hpl.jena.graph.query.Stage
      com.hp.hpl.jena.graph.query.PatternStageBase

Direct Known Subclasses:

PatternStage

public abstract class PatternStageBase
extends Stage

PatternStageBase contains the features that are common to the traditional PatternStage engine and the Faster engine. (Eventually the two will merge back together.) Notable, it:

• remembers the graph
• classifies all the triples according to the factory
• constructs the array of applicable guards

Author:

hedgehog

Nested Class Summary

class

PatternStageBase.Work

Field Summary

static boolean

reuseThreads

Fields inherited from class com.hp.hpl.jena.graph.query.Stage

stillOpen

Constructor Summary

PatternStageBase(QueryNodeFactory factory, Graph graph, Mapping map, ExpressionSet constraints, Triple[] triples)

Method Summary

Pipe	deliver(Pipe sink) execute the pipeline and pump the results into _sink_; this is asynchronous.

Methods inherited from class com.hp.hpl.jena.graph.query.Stage

close, connectFrom, initial, isClosed

Methods inherited from class java.lang.Object

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

Field Detail

reuseThreads

public static boolean reuseThreads

Constructor Detail

PatternStageBase

public PatternStageBase(QueryNodeFactory factory,
                        Graph graph,
                        Mapping map,
                        ExpressionSet constraints,
                        Triple[] triples)

Method Detail

deliver

public Pipe deliver(Pipe sink)

Description copied from class: Stage

execute the pipeline and pump the results into _sink_; this is asynchronous. deliver that same _sink_ as our result. (This allows the sink to be created as the argument to _deliver_.)

Specified by:

deliver in class Stage