org.apache.tinkerpop.gremlin.process.traversal.step.sideEffect

Class StartStep<S>

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep<S,S>

org.apache.tinkerpop.gremlin.process.traversal.step.sideEffect.StartStep<S>

All Implemented Interfaces:

Serializable, Cloneable, Iterator<Traverser.Admin<S>>, Step<S,S>

Direct Known Subclasses:

CypherStartStep, InjectStep

public class StartStep<S>
extends AbstractStep<S,S>

Author:

Marko A. Rodriguez (http://markorodriguez.com)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	first
protected Object	start

Fields inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep

id, labels, nextEnd, nextStep, previousStep, starts, traversal, traverserStepIdAndLabelsSetByChild

Constructor Summary

Constructors

Constructor and Description
StartStep(Traversal.Admin traversal)
StartStep(Traversal.Admin traversal, Object start)

Method Summary

Modifier and Type	Method and Description
StartStep<S>	clone() Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication.
<T> T	getStart()
int	hashCode()
static boolean	isVariableStartStep(Step<?,?> step)
protected Traverser.Admin<S>	processNextStart()
String	toString()

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep

addLabel, addStart, addStarts, equals, getId, getLabels, getNextStep, getPreviousStep, getStarts, getTraversal, hasNext, isTraverserStepIdAndLabelsSetByChild, next, prepareTraversalForNextStep, removeLabel, reset, setId, setNextStep, setPreviousStep, setTraversal

Methods inherited from class java.lang.Object

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

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

equals, getRequirements

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Field Detail

start

protected Object start

first

protected boolean first

Constructor Detail

StartStep

public StartStep(Traversal.Admin traversal,
                 Object start)

StartStep

public StartStep(Traversal.Admin traversal)

Method Detail

getStart

public <T> T getStart()

toString

public String toString()

Overrides:

toString in class AbstractStep<S,S>

processNextStart

protected Traverser.Admin<S> processNextStart()

Specified by:

processNextStart in class AbstractStep<S,S>

clone

public StartStep<S> clone()

Description copied from interface: Step

Cloning is used to duplicate steps for the purpose of traversal optimization and OLTP replication. When cloning a step, it is important that the steps, the cloned step is equivalent to the state of the step when Step.reset() is called. Moreover, the previous and next steps should be set to EmptyStep.

Specified by:

clone in interface Step<S,S>

Overrides:

clone in class AbstractStep<S,S>

Returns:

The cloned step

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractStep<S,S>

isVariableStartStep

public static boolean isVariableStartStep(Step<?,?> step)