Package org.apache.tinkerpop.gremlin.structure.util.empty

Class EmptyGraph.EmptyGraphFeatures.EmptyGraphGraphFeatures

java.lang.Object

org.apache.tinkerpop.gremlin.structure.util.empty.EmptyGraph.EmptyGraphFeatures.EmptyGraphGraphFeatures

All Implemented Interfaces:

Graph.Features.FeatureSet, Graph.Features.GraphFeatures

Enclosing class:

EmptyGraph.EmptyGraphFeatures

public final class EmptyGraph.EmptyGraphFeatures.EmptyGraphGraphFeatures
extends Object
implements Graph.Features.GraphFeatures

Graph features defined such that they support immutability but allow all other possibilities.

Field Summary

Fields inherited from interface org.apache.tinkerpop.gremlin.structure.Graph.Features.GraphFeatures

FEATURE_COMPUTER, FEATURE_CONCURRENT_ACCESS, FEATURE_IO_READ, FEATURE_IO_WRITE, FEATURE_ORDERABILITY_SEMANTICS, FEATURE_PERSISTENCE, FEATURE_SERVICE_CALL, FEATURE_THREADED_TRANSACTIONS, FEATURE_TRANSACTIONS

Constructor Summary

Constructors

Constructor	Description
EmptyGraphGraphFeatures()

Method Summary

Modifier and Type	Method	Description
boolean	supportsComputer()	Determines if the Graph implementation supports GraphComputer based processing.
boolean	supportsPersistence()	Determines if the Graph implementation supports persisting it's contents natively to disk.
boolean	supportsThreadedTransactions()	Determines if the Graph implementation supports threaded transactions which allow a transaction to be executed across multiple threads via Transaction.createThreadedTx().
boolean	supportsTransactions()	Determines if the Graph implementations supports transactions.
Graph.Features.VariableFeatures	variables()	Gets the features related to "graph sideEffects" operation.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tinkerpop.gremlin.structure.Graph.Features.GraphFeatures

supportsConcurrentAccess, supportsIoRead, supportsIoWrite, supportsOrderabilitySemantics, supportsServiceCall

Constructor Details

EmptyGraphGraphFeatures

public EmptyGraphGraphFeatures()

Method Details

supportsPersistence

public boolean supportsPersistence()

Description copied from interface: Graph.Features.GraphFeatures

Determines if the Graph implementation supports persisting it's contents natively to disk. This feature does not refer to every graph's ability to write to disk via the Gremlin IO packages (.e.g. GraphML), unless the graph natively persists to disk via those options somehow. For example, TinkerGraph does not support this feature as it is a pure in-sideEffects graph.

Specified by:

supportsPersistence in interface Graph.Features.GraphFeatures

supportsTransactions

public boolean supportsTransactions()

Description copied from interface: Graph.Features.GraphFeatures

Determines if the Graph implementations supports transactions.

Specified by:

supportsTransactions in interface Graph.Features.GraphFeatures

supportsThreadedTransactions

public boolean supportsThreadedTransactions()

Description copied from interface: Graph.Features.GraphFeatures

Determines if the Graph implementation supports threaded transactions which allow a transaction to be executed across multiple threads via Transaction.createThreadedTx().

Specified by:

supportsThreadedTransactions in interface Graph.Features.GraphFeatures

variables

public Graph.Features.VariableFeatures variables()

Description copied from interface: Graph.Features.GraphFeatures

Gets the features related to "graph sideEffects" operation.

Specified by:

variables in interface Graph.Features.GraphFeatures

supportsComputer

public boolean supportsComputer()

Description copied from interface: Graph.Features.GraphFeatures

Determines if the Graph implementation supports GraphComputer based processing.

Specified by:

supportsComputer in interface Graph.Features.GraphFeatures