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

Class ReferenceVertexProperty<V>

java.lang.Object

org.apache.tinkerpop.gremlin.structure.util.reference.ReferenceElement<VertexProperty<V>>

org.apache.tinkerpop.gremlin.structure.util.reference.ReferenceVertexProperty<V>

All Implemented Interfaces:

Serializable, Element, Property<V>, Attachable<VertexProperty<V>>, VertexProperty<V>

public class ReferenceVertexProperty<V>
extends ReferenceElement<VertexProperty<V>>
implements VertexProperty<V>

Author:

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

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.structure.util.Attachable

Attachable.Exceptions, Attachable.Method

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.structure.Element

Element.Exceptions

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.structure.VertexProperty

VertexProperty.Cardinality, VertexProperty.Exceptions

Field Summary

Fields inherited from class org.apache.tinkerpop.gremlin.structure.util.reference.ReferenceElement

id, label

Fields inherited from interface org.apache.tinkerpop.gremlin.structure.util.Attachable

logger

Fields inherited from interface org.apache.tinkerpop.gremlin.structure.VertexProperty

DEFAULT_LABEL

Constructor Summary

Constructors

Constructor	Description
ReferenceVertexProperty(Object id, String label, V value)
ReferenceVertexProperty(VertexProperty<V> vertexProperty)

Method Summary

Modifier and Type	Method	Description
Vertex	element()	Gets the Vertex that owns this VertexProperty.
boolean	isPresent()	Whether the property is empty or not.
String	key()	The key of the property.
String	label()	Gets the label for the graph Element which helps categorize it.
<U> Iterator<Property<U>>	properties(String... propertyKeys)	Get an Iterator of properties where the propertyKeys is meant to be a filter on the available keys.
<U> Property<U>	property(String key, U value)	Add or set a property value for the Element given its key.
void	remove()	Remove the property from the associated element.
String	toString()
V	value()	The value of the property.

Methods inherited from class org.apache.tinkerpop.gremlin.structure.util.reference.ReferenceElement

equals, get, graph, hashCode, id, labels

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tinkerpop.gremlin.structure.util.Attachable

attach

Methods inherited from interface org.apache.tinkerpop.gremlin.structure.Element

addLabel, dropLabel, dropLabels, id, keys, property, value, values

Methods inherited from interface org.apache.tinkerpop.gremlin.structure.Property

ifPresent, orElse, orElseGet, orElseThrow

Methods inherited from interface org.apache.tinkerpop.gremlin.structure.VertexProperty

graph, labels

Constructor Details

ReferenceVertexProperty

public ReferenceVertexProperty(VertexProperty<V> vertexProperty)

ReferenceVertexProperty

public ReferenceVertexProperty(Object id,
 String label,
 V value)

Method Details

toString

public String toString()

Overrides:

toString in class Object

key

public String key()

Description copied from interface: Property

The key of the property.

Specified by:

key in interface Property<V>

Returns:

The property key

label

public String label()

Description copied from interface: Element

Gets the label for the graph Element which helps categorize it.

Specified by:

label in interface Element

Specified by:

label in interface VertexProperty<V>

Overrides:

label in class ReferenceElement<VertexProperty<V>>

Returns:

The label of the element

value

public V value()
        throws NoSuchElementException

Description copied from interface: Property

The value of the property.

Specified by:

value in interface Property<V>

Returns:

The property value

Throws:

NoSuchElementException - thrown if the property is empty

isPresent

public boolean isPresent()

Description copied from interface: Property

Whether the property is empty or not.

Specified by:

isPresent in interface Property<V>

Returns:

True if the property exists, else false

element

public Vertex element()

Description copied from interface: VertexProperty

Gets the Vertex that owns this VertexProperty.

Specified by:

element in interface Property<V>

Specified by:

element in interface VertexProperty<V>

Returns:

The element associated with this property (i.e. Vertex, Edge, or VertexProperty).

property

public <U> Property<U> property(String key,
 U value)

Description copied from interface: Element

Add or set a property value for the Element given its key.

Specified by:

property in interface Element

remove

public void remove()

Description copied from interface: Property

Remove the property from the associated element.

Specified by:

remove in interface Element

Specified by:

remove in interface Property<V>

properties

public <U> Iterator<Property<U>> properties(String... propertyKeys)

Description copied from interface: VertexProperty

Get an Iterator of properties where the propertyKeys is meant to be a filter on the available keys. If no keys are provide then return all the properties.

Specified by:

properties in interface Element

Specified by:

properties in interface VertexProperty<V>