Class ToLowerGlobalStep<S,E>
- java.lang.Object
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- org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep<S,E>
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- org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep<S,E>
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- org.apache.tinkerpop.gremlin.process.traversal.step.map.ScalarMapStep<S,E>
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- org.apache.tinkerpop.gremlin.process.traversal.step.map.ToLowerGlobalStep<S,E>
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- All Implemented Interfaces:
Serializable
,Cloneable
,Iterator<Traverser.Admin<E>>
,Step<S,E>
public final class ToLowerGlobalStep<S,E> extends ScalarMapStep<S,E>
Reference implementation for toLower() step, a mid-traversal step which returns a lower case string representation of the incoming string traverser. Null values are not processed and remain as null when returned. If the incoming traverser is a non-String value then anIllegalArgumentException
will be thrown.- Author:
- David Bechberger (http://bechberger.com), Yang Xia (http://github.com/xiazcy)
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep
id, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdAndLabelsSetByChild
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Constructor Summary
Constructors Constructor Description ToLowerGlobalStep(Traversal.Admin traversal)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Set<TraverserRequirement>
getRequirements()
Provide the necessaryTraverserRequirement
that must be met by the traverser in order for the step to function properly.protected E
map(Traverser.Admin<S> traverser)
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Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.map.ScalarMapStep
processNextStart
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Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep
addLabel, addStart, addStarts, clearLabels, clone, equals, getId, getLabels, getNextStep, getPreviousStep, getStarts, getTraversal, hashCode, hasNext, hasStarts, isTraverserStepIdAndLabelsSetByChild, next, prepareTraversalForNextStep, removeLabel, reset, setId, setNextStep, setPreviousStep, setTraversal, toString
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Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface java.util.Iterator
forEachRemaining, remove
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Constructor Detail
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ToLowerGlobalStep
public ToLowerGlobalStep(Traversal.Admin traversal)
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Method Detail
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map
protected E map(Traverser.Admin<S> traverser)
- Specified by:
map
in classScalarMapStep<S,E>
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getRequirements
public Set<TraverserRequirement> getRequirements()
Description copied from interface:Step
Provide the necessaryTraverserRequirement
that must be met by the traverser in order for the step to function properly. The provided default implements returns an empty set.- Returns:
- the set of requirements
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