org.apache.tinkerpop.gremlin.driver.remote

Class DriverRemoteTraversal<S,E>

java.lang.Object

org.apache.tinkerpop.gremlin.process.remote.traversal.AbstractRemoteTraversal<S,E>

org.apache.tinkerpop.gremlin.driver.remote.DriverRemoteTraversal<S,E>

All Implemented Interfaces:

Serializable, AutoCloseable, Cloneable, Iterator<E>, RemoteTraversal<S,E>, Traversal<S,E>, Traversal.Admin<S,E>

public class DriverRemoteTraversal<S,E>
extends AbstractRemoteTraversal<S,E>

A AbstractRemoteTraversal implementation for the Gremlin Driver. This Traversal implementation is typically iterated from RemoteStep where the nextTraverser() method is called. While this class provides implementations for both next() and hasNext() that unroll "bulked" results, those methods are not called directly from with TinkerPop remoting.

Author:

Stephen Mallette (http://stephen.genoprime.com)

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.process.traversal.Traversal

Traversal.Admin<S,E>, Traversal.Exceptions, Traversal.Symbols

Constructor Summary

Constructors

Constructor and Description
DriverRemoteTraversal(ResultSet rs, Client client, boolean attach, Optional<Configuration> conf)

Method Summary

Modifier and Type	Method and Description
void	close() Releases server-side resources related to this traversal (i.e.
RemoteTraversalSideEffects	getSideEffects() Gets a side-effect from the server.
boolean	hasNext()
E	next()
Traverser.Admin<E>	nextTraverser() Note that internally AbstractRemoteTraversal.nextTraverser() is called from within a loop (specifically in AbstractStep.next() that breaks properly when a NoSuchElementException is thrown.

Methods inherited from class org.apache.tinkerpop.gremlin.process.remote.traversal.AbstractRemoteTraversal

addStep, applyStrategies, clone, getBytecode, getGraph, getParent, getSteps, getStrategies, getTraverserGenerator, getTraverserRequirements, isLocked, removeStep, setGraph, setParent, setSideEffects, setStrategies

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin

addStart, addStarts, addStep, equals, getEndStep, getStartStep, removeStep, reset

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

asAdmin, explain, fill, forEachRemaining, forEachRemaining, iterate, next, none, profile, promise, toBulkSet, toList, toSet, toStream, tryNext

Methods inherited from interface java.util.Iterator

remove

Constructor Detail

DriverRemoteTraversal

public DriverRemoteTraversal(ResultSet rs,
                             Client client,
                             boolean attach,
                             Optional<Configuration> conf)

Method Detail

getSideEffects

public RemoteTraversalSideEffects getSideEffects()

Gets a side-effect from the server. Do not call this method prior to completing the iteration of the DriverRemoteTraversal that spawned this as the side-effect will not be ready. Generally speaking, the common user would not get side-effects this way - they would use a call to cap().

Returns:

The traversal sideEffects

hasNext

public boolean hasNext()

next

public E next()

nextTraverser

public Traverser.Admin<E> nextTraverser()

Description copied from class: AbstractRemoteTraversal

Note that internally AbstractRemoteTraversal.nextTraverser() is called from within a loop (specifically in AbstractStep.next() that breaks properly when a NoSuchElementException is thrown. In other words the "results" should be iterated to force that failure.

Specified by:

nextTraverser in interface Traversal.Admin<S,E>

Specified by:

nextTraverser in class AbstractRemoteTraversal<S,E>

close

public void close()
           throws Exception

Releases server-side resources related to this traversal (i.e. clearing the side-effect cache of data related to this traversal.

Throws:

Exception