public final class SelectStep<S,E> extends MapStep<S,Map<String,E>> implements Scoping, TraversalParent, PathProcessor, ByModulating
Scoping.Variable
PathProcessor.ElementRequirement
id, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdAndLabelsSetByChild
TYPICAL_GLOBAL_REQUIREMENTS, TYPICAL_GLOBAL_REQUIREMENTS_ARRAY, TYPICAL_LOCAL_REQUIREMENTS, TYPICAL_LOCAL_REQUIREMENTS_ARRAY
Constructor and Description |
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SelectStep(Traversal.Admin traversal,
Pop pop,
String... selectKeys) |
Modifier and Type | Method and Description |
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SelectStep<S,E> |
clone()
Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication.
|
Map<String,Traversal.Admin<Object,E>> |
getByTraversals() |
Set<String> |
getKeepLabels() |
List<Traversal.Admin<Object,E>> |
getLocalChildren() |
Pop |
getPop() |
Set<TraverserRequirement> |
getRequirements()
Provide the necessary
TraverserRequirement that must be met by the traverser in order for the step to function properly. |
Set<String> |
getScopeKeys() |
int |
hashCode() |
protected Map<String,E> |
map(Traverser.Admin<S> traverser) |
void |
modulateBy(Traversal.Admin<?,?> selectTraversal) |
protected Traverser.Admin<Map<String,E>> |
processNextStart() |
void |
reset()
Reset the state of the step such that it has no incoming starts.
|
void |
setKeepLabels(Set<String> labels) |
void |
setTraversal(Traversal.Admin<?,?> parentTraversal)
Set the
Traversal that this step is contained within. |
String |
toString() |
addLabel, addStart, addStarts, equals, getId, getLabels, getNextStep, getPreviousStep, getTraversal, hasNext, next, removeLabel, setId, setNextStep, setPreviousStep
finalize, getClass, notify, notifyAll, wait, wait, wait
getNullableScopeValue, getScopeValue
addGlobalChild, addLocalChild, asStep, close, getGlobalChildren, getSelfAndChildRequirements, integrateChild, removeGlobalChild, removeLocalChild
getMaxRequirement, processTraverserPathLabels
modulateBy, modulateBy, modulateBy, modulateBy, modulateBy, modulateBy, modulateBy, modulateBy, modulateBy, modulateBy, modulateBy
forEachRemaining, remove
public SelectStep(Traversal.Admin traversal, Pop pop, String... selectKeys)
protected Map<String,E> map(Traverser.Admin<S> traverser)
public void reset()
Step
public SelectStep<S,E> clone()
Step
EmptyStep
.public void setTraversal(Traversal.Admin<?,?> parentTraversal)
Step
Traversal
that this step is contained within.setTraversal
in interface Step<S,Map<String,E>>
setTraversal
in class AbstractStep<S,Map<String,E>>
parentTraversal
- the new traversal for this steppublic List<Traversal.Admin<Object,E>> getLocalChildren()
getLocalChildren
in interface TraversalParent
public void modulateBy(Traversal.Admin<?,?> selectTraversal)
modulateBy
in interface ByModulating
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.public Set<String> getScopeKeys()
getScopeKeys
in interface Scoping
public Map<String,Traversal.Admin<Object,E>> getByTraversals()
public Pop getPop()
public void setKeepLabels(Set<String> labels)
setKeepLabels
in interface PathProcessor
public Set<String> getKeepLabels()
getKeepLabels
in interface PathProcessor
protected Traverser.Admin<Map<String,E>> processNextStart()
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