Package org.umlg.sqlg.step.barrier

Class SqlgReducingStepBarrier<S,E>

java.lang.Object

org.umlg.sqlg.step.SqlgAbstractStep<S,E>

org.umlg.sqlg.step.barrier.SqlgReducingStepBarrier<S,E>

All Implemented Interfaces:

Serializable, Cloneable, Iterator<org.apache.tinkerpop.gremlin.process.traversal.Traverser.Admin<E>>, org.apache.tinkerpop.gremlin.process.traversal.Step<S,E>

Direct Known Subclasses:

SqlgAvgGlobalStep, SqlgCountGlobalStep, SqlgFoldStep, SqlgGroupStep, SqlgMaxGlobalStep, SqlgMinGlobalStep, SqlgSumGlobalStep

public abstract class SqlgReducingStepBarrier<S,E>
extends SqlgAbstractStep<S,E>

Author:

Pieter Martin Date: 2019/07/04

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.umlg.sqlg.step.SqlgAbstractStep

starts

Constructor Summary

Constructors

Constructor	Description
SqlgReducingStepBarrier(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal)

Method Summary

Modifier and Type	Method	Description
boolean	hasStarts()
protected org.apache.tinkerpop.gremlin.process.traversal.Traverser.Admin<E>	processNextStart()
protected org.apache.tinkerpop.gremlin.process.traversal.Traverser.Admin<E>	produceFinalResult(E result)
E	reduce(E a, S b)
void	reset()
void	setSeedSupplier(Supplier<E> seedSupplier)

Methods inherited from class org.umlg.sqlg.step.SqlgAbstractStep

addLabel, addStart, addStarts, clearLabels, clone, equals, getId, getLabels, getNextStep, getPreviousStep, getTraversal, hashCode, hasNext, next, removeLabel, setId, setNextStep, setPreviousStep, setTraversal, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Methods inherited from interface org.apache.tinkerpop.gremlin.process.traversal.Step

equals, getRequirements

Constructor Details

SqlgReducingStepBarrier

public SqlgReducingStepBarrier(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal)

Method Details

setSeedSupplier

public void setSeedSupplier(Supplier<E> seedSupplier)

hasStarts

public boolean hasStarts()

Specified by:

hasStarts in interface org.apache.tinkerpop.gremlin.process.traversal.Step<S,E>

Overrides:

hasStarts in class SqlgAbstractStep<S,E>

processNextStart

protected org.apache.tinkerpop.gremlin.process.traversal.Traverser.Admin<E> processNextStart()
                                                                                      throws NoSuchElementException

Specified by:

processNextStart in class SqlgAbstractStep<S,E>

Throws:

NoSuchElementException

produceFinalResult

protected org.apache.tinkerpop.gremlin.process.traversal.Traverser.Admin<E> produceFinalResult(E result)

reduce

public E reduce(E a,
 S b)

reset

public void reset()

Specified by:

reset in interface org.apache.tinkerpop.gremlin.process.traversal.Step<S,E>

Overrides:

reset in class SqlgAbstractStep<S,E>