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

Class EmptyGraph.EmptyGraphFeatures.EmptyGraphVertexFeatures

java.lang.Object

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

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

All Implemented Interfaces:

Graph.Features.ElementFeatures, Graph.Features.FeatureSet, Graph.Features.VertexFeatures

Enclosing class:

EmptyGraph.EmptyGraphFeatures

public final class EmptyGraph.EmptyGraphFeatures.EmptyGraphVertexFeatures
extends EmptyGraph.EmptyGraphFeatures.EmptyGraphElementFeatures
implements Graph.Features.VertexFeatures

Vertex 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.VertexFeatures

FEATURE_ADD_VERTICES, FEATURE_DUPLICATE_MULTI_PROPERTIES, FEATURE_META_PROPERTIES, FEATURE_MULTI_PROPERTIES, FEATURE_REMOVE_VERTICES, FEATURE_UPSERT

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

FEATURE_ADD_PROPERTY, FEATURE_ANY_IDS, FEATURE_CUSTOM_IDS, FEATURE_NUMERIC_IDS, FEATURE_REMOVE_PROPERTY, FEATURE_STRING_IDS, FEATURE_USER_SUPPLIED_IDS, FEATURE_UUID_IDS

Constructor Summary

Constructors

Constructor and Description
EmptyGraphVertexFeatures()

Method Summary

Modifier and Type	Method and Description
VertexProperty.Cardinality	getCardinality(String key) Gets the VertexProperty.Cardinality for a key.
Graph.Features.VertexPropertyFeatures	properties() Gets features related to "properties" on a Vertex.
boolean	supportsAddVertices() Determines if a Vertex can be added to the Graph.
boolean	supportsRemoveVertices() Determines if a Vertex can be removed from the Graph.

Methods inherited from class org.apache.tinkerpop.gremlin.structure.util.empty.EmptyGraph.EmptyGraphFeatures.EmptyGraphElementFeatures

supportsAddProperty, supportsRemoveProperty

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.VertexFeatures

supportsDuplicateMultiProperties, supportsMetaProperties, supportsMultiProperties, supportsUpsert

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

supportsAddProperty, supportsAnyIds, supportsCustomIds, supportsNumericIds, supportsRemoveProperty, supportsStringIds, supportsUserSuppliedIds, supportsUuidIds, willAllowId

Constructor Detail

EmptyGraphVertexFeatures

public EmptyGraphVertexFeatures()

Method Detail

getCardinality

public VertexProperty.Cardinality getCardinality(String key)

Description copied from interface: Graph.Features.VertexFeatures

Gets the VertexProperty.Cardinality for a key. By default, this method will return VertexProperty.Cardinality.list. Implementations that employ a schema can consult it to determine the VertexProperty.Cardinality. Those that do no have a schema can return their default VertexProperty.Cardinality for every key.

Note that this method is primarily used by TinkerPop for internal usage and may not be suitable to reliably determine the cardinality of a key. For some implementation it may offer little more than a hint on the actual cardinality. Generally speaking it is likely best to drop down to the API of the Graph implementation for any schema related queries.

Specified by:

getCardinality in interface Graph.Features.VertexFeatures

supportsAddVertices

public boolean supportsAddVertices()

Description copied from interface: Graph.Features.VertexFeatures

Determines if a Vertex can be added to the Graph.

Specified by:

supportsAddVertices in interface Graph.Features.VertexFeatures

supportsRemoveVertices

public boolean supportsRemoveVertices()

Description copied from interface: Graph.Features.VertexFeatures

Determines if a Vertex can be removed from the Graph.

Specified by:

supportsRemoveVertices in interface Graph.Features.VertexFeatures

properties

public Graph.Features.VertexPropertyFeatures properties()

Description copied from interface: Graph.Features.VertexFeatures

Gets features related to "properties" on a Vertex.

Specified by:

properties in interface Graph.Features.VertexFeatures