Package org.neo4j.gds.core.loading

Class NullPropertyMap

java.lang.Object

org.neo4j.gds.core.loading.NullPropertyMap

All Implemented Interfaces:

NodePropertyValues, PropertyValues

Direct Known Subclasses:

NullPropertyMap.DoubleNullPropertyMap, NullPropertyMap.LongNullPropertyMap

public abstract class NullPropertyMap
extends java.lang.Object
implements NodePropertyValues

NodePropertyValues implementation which always returns a given default property value upon invocation.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	NullPropertyMap.DoubleNullPropertyMap
static class	NullPropertyMap.LongNullPropertyMap

Constructor Summary

Constructors

Constructor	Description
NullPropertyMap()

Method Summary

Modifier and Type	Method	Description
java.util.Optional<java.lang.Integer>	dimension()	The dimension of the properties.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.neo4j.gds.api.properties.nodes.NodePropertyValues

doubleArrayValue, doubleValue, floatArrayValue, getMaxDoublePropertyValue, getMaxLongPropertyValue, getObject, hasValue, longArrayValue, longValue, nodeCount, value

Methods inherited from interface org.neo4j.gds.api.properties.PropertyValues

unsupportedTypeException, valueType

Constructor Detail

NullPropertyMap

public NullPropertyMap()

Method Detail

dimension

public java.util.Optional<java.lang.Integer> dimension()

Description copied from interface: NodePropertyValues

The dimension of the properties. For scalar values, this is 1. For arrays, this is the length of the array stored for the 0th node id. If that array is null, this method returns Optional.empty().

Specified by:

dimension in interface NodePropertyValues

Returns:

the dimension of the properties stored, or empty if the dimension cannot easily be retrieved.