public final class EmptyVertexProperty<V> extends Object implements VertexProperty<V>
VertexProperty.Cardinality, VertexProperty.ExceptionsDEFAULT_LABEL| Constructor and Description |
|---|
EmptyVertexProperty() |
| Modifier and Type | Method and Description |
|---|---|
Vertex |
element()
Gets the
Vertex that owns this VertexProperty. |
Graph |
graph()
Get the graph that this element is within.
|
Object |
id()
Gets the unique identifier for the graph
Element. |
static <U> VertexProperty<U> |
instance() |
boolean |
isPresent()
Whether the property is empty or not.
|
String |
key()
The key of the property.
|
<U> Iterator<Property<U>> |
properties(String... propertyKeys)
Get an
Iterator of properties. |
<U> Property<U> |
property(String key)
Get a
Property for the Element given its key. |
<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.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitempty, labelifPresent, orElse, orElseGet, orElseThrowpublic static <U> VertexProperty<U> instance()
public Vertex element()
VertexPropertyVertex that owns this VertexProperty.element in interface Property<V>element in interface VertexProperty<V>Vertex, Edge, or VertexProperty).public Object id()
ElementElement.public Graph graph()
VertexPropertygraph in interface Elementgraph in interface VertexProperty<V>public <U> Property<U> property(String key)
ElementProperty for the Element given its key.
The default implementation calls the raw Element.properties(java.lang.String...).public <U> Property<U> property(String key, U value)
ElementElement given its key.public V value() throws NoSuchElementException
Propertyvalue in interface Property<V>NoSuchElementException - thrown if the property is emptypublic boolean isPresent()
Propertypublic void remove()
Propertypublic <U> Iterator<Property<U>> properties(String... propertyKeys)
VertexPropertyIterator of properties.properties in interface Elementproperties in interface VertexProperty<V>Copyright © 2013–2016 Apache Software Foundation. All rights reserved.