public final class SelectStep<S,E> extends MapStep<S,Map<String,E>> implements TraversalParent, EngineDependent
Modifier and Type | Field and Description |
---|---|
protected TraversalRing<Object,Object> |
traversalRing |
id, label, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdSetByChild
Constructor and Description |
---|
SelectStep(Traversal.Admin traversal,
String... selectLabels) |
Modifier and Type | Method and Description |
---|---|
void |
addLocalChild(Traversal.Admin<?,?> selectTraversal) |
SelectStep<S,E> |
clone()
Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication.
|
List<Traversal.Admin<Object,Object>> |
getLocalChildren() |
Set<TraverserRequirement> |
getRequirements()
Provide the necessary
TraverserRequirement that must be met by the traverser in order for the step to function properly. |
protected Map<String,E> |
map(Traverser.Admin<S> traverser) |
void |
onEngine(TraversalEngine traversalEngine) |
void |
reset()
Reset the state of the step such that it has no incoming starts.
|
String |
toString() |
processNextStart
addStart, addStarts, getId, getLabel, getNextStep, getPreviousStep, getTraversal, hasNext, next, setId, setLabel, setNextStep, setPreviousStep, setTraversal
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
addGlobalChild, asStep, getGlobalChildren, getSelfAndChildRequirements, integrateChild
forEachRemaining, remove
protected TraversalRing<Object,Object> traversalRing
public SelectStep(Traversal.Admin traversal, String... selectLabels)
protected Map<String,E> map(Traverser.Admin<S> traverser)
public void reset()
Step
public void onEngine(TraversalEngine traversalEngine)
onEngine
in interface EngineDependent
public SelectStep<S,E> clone()
Step
EmptyStep
.public List<Traversal.Admin<Object,Object>> getLocalChildren()
getLocalChildren
in interface TraversalParent
public void addLocalChild(Traversal.Admin<?,?> selectTraversal)
addLocalChild
in interface TraversalParent
public Set<TraverserRequirement> getRequirements()
Step
TraverserRequirement
that must be met by the traverser in order for the step to function properly.
The provided default implements returns an empty set.Copyright © 2013–2015 Apache Software Foundation. All rights reserved.