ai.grakn.kb.internal.structure

Class VertexElement

java.lang.Object

ai.grakn.kb.internal.structure.AbstractElement<org.apache.tinkerpop.gremlin.structure.Vertex,Schema.VertexProperty>

ai.grakn.kb.internal.structure.VertexElement

public class VertexElement
extends AbstractElement<org.apache.tinkerpop.gremlin.structure.Vertex,Schema.VertexProperty>

Represent a Vertex in a GraknTx

Wraps a tinkerpop Vertex constraining it to the Grakn Object Model. This is used to wrap common functionality between exposed Concept and unexposed internal vertices.

Author:

fppt

Constructor Summary

Constructors

Constructor and Description
VertexElement(EmbeddedGraknTx graknTx, org.apache.tinkerpop.gremlin.structure.Vertex element)

Method Summary

Modifier and Type	Method and Description
EdgeElement	addEdge(VertexElement to, Schema.EdgeLabel type)
void	deleteEdge(org.apache.tinkerpop.gremlin.structure.Direction direction, Schema.EdgeLabel label, VertexElement... targets) Deletes all the edges of a specific Schema.EdgeLabel to or from a specific set of targets.
java.util.stream.Stream<EdgeElement>	getEdgesOfType(org.apache.tinkerpop.gremlin.structure.Direction direction, Schema.EdgeLabel label)
EdgeElement	putEdge(VertexElement to, Schema.EdgeLabel type)
String	toString()

Methods inherited from class ai.grakn.kb.internal.structure.AbstractElement

delete, element, equals, hashCode, id, isDeleted, label, property, property, propertyBoolean, propertyImmutable, propertyImmutable, propertyUnique, tx

Methods inherited from class java.lang.Object

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

Constructor Detail

VertexElement

public VertexElement(EmbeddedGraknTx graknTx,
                     org.apache.tinkerpop.gremlin.structure.Vertex element)

Method Detail

getEdgesOfType

public java.util.stream.Stream<EdgeElement> getEdgesOfType(org.apache.tinkerpop.gremlin.structure.Direction direction,
                                                           Schema.EdgeLabel label)

Parameters:

direction - The direction of the edges to retrieve

label - The type of the edges to retrieve

Returns:

A collection of edges from this concept in a particular direction of a specific type

addEdge

public EdgeElement addEdge(VertexElement to,
                           Schema.EdgeLabel type)

Parameters:

to - the target VertexElement

type - the type of the edge to create

Returns:

The edge created

putEdge

public EdgeElement putEdge(VertexElement to,
                           Schema.EdgeLabel type)

Parameters:

to - the target VertexElement

type - the type of the edge to create

deleteEdge

public void deleteEdge(org.apache.tinkerpop.gremlin.structure.Direction direction,
                       Schema.EdgeLabel label,
                       VertexElement... targets)

Deletes all the edges of a specific Schema.EdgeLabel to or from a specific set of targets. If no targets are provided then all the edges of the specified type are deleted

Parameters:

direction - The direction of the edges to delete

label - The edge label to delete

targets - An optional set of targets to delete edges from

toString

public String toString()

Overrides:

toString in class Object