ai.grakn.concept

Interface Resource<D>

All Superinterfaces:

Comparable<Concept>, Concept, Instance

public interface Resource<D>
extends Instance

A Resource is the Concept that represents a resource associated with one or more Instances.

Method Summary

Modifier and Type	Method and Description
ResourceType.DataType<D>	dataType() Retrieves the data type of this Resource's ResourceType.
D	getValue() Retrieves the value of the Resource.
Instance	owner() If the Resource is unique, this method retrieves the Instance that possesses it.
Collection<Instance>	ownerInstances() Retrieves the set of all Instances that possess this Resource.
ResourceType<D>	type() Retrieves the type of the Resource, that is, the ResourceType of which this resource is an Instance.

Methods inherited from interface ai.grakn.concept.Instance

hasResource, playsRoles, relations, resources

Methods inherited from interface ai.grakn.concept.Concept

asEntity, asEntityType, asInstance, asRelation, asRelationType, asResource, asResourceType, asRoleType, asRule, asRuleType, asType, delete, getId, isEntity, isEntityType, isInstance, isRelation, isRelationType, isResource, isResourceType, isRoleType, isRule, isRuleType, isType

Methods inherited from interface java.lang.Comparable

compareTo

Method Detail

getValue

D getValue()

Retrieves the value of the Resource.

Type Parameters:

D - The data type of this resource. Supported Types include: String, Long, Double, and Boolean

Returns:

The Resource itself

type

ResourceType<D> type()

Retrieves the type of the Resource, that is, the ResourceType of which this resource is an Instance.

Specified by:

type in interface Concept

Type Parameters:

D - The data type of this resource. Supported Types include: String, Long, Double, and Boolean

Returns:

The ResourceType of which this resource is an Instance.

dataType

ResourceType.DataType<D> dataType()

Retrieves the data type of this Resource's ResourceType.

Type Parameters:

D - The data type of the Resource. Supported Types include: String, Long, Double, and Boolean

Returns:

The data type of this Resource's type.

ownerInstances

Collection<Instance> ownerInstances()

Retrieves the set of all Instances that possess this Resource.

Returns:

The list of all Instances that possess this Resource.

owner

Instance owner()

If the Resource is unique, this method retrieves the Instance that possesses it.

Returns:

The Instance which is connected to a unique Resource.