org.wikidata.wdtk.datamodel.implementation

Class ClaimImpl

java.lang.Object

org.wikidata.wdtk.datamodel.implementation.ClaimImpl

All Implemented Interfaces:

Claim

public class ClaimImpl
extends Object
implements Claim

Helper class to represent a Claim. This is a ffacade for a Statement

Author:

Fredo Erxleben, Antonin Delpeuch

Constructor Summary

Constructors

Constructor and Description
ClaimImpl(EntityIdValue subject, Snak mainSnak, List<SnakGroup> qualifiers) Constructor to create a claim.
ClaimImpl(StatementImpl statement) Constructor used to initialize a claim from a JacksonStatement, should only be used internally.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
Iterator<Snak>	getAllQualifiers() Returns an iterator over all qualifiers, without considering qualifier groups.
Snak	getMainSnak() Main Snak of the statement.
List<SnakGroup>	getQualifiers() Groups of auxiliary Snaks, also known as qualifiers, that provide additional context information for this claim.
EntityIdValue	getSubject() The subject that the claim refers to, e.g., the id of "Berlin".
Value	getValue() Convenience method to get the value of the claim's main snak, or null if there is none.
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ClaimImpl

public ClaimImpl(EntityIdValue subject,
                 Snak mainSnak,
                 List<SnakGroup> qualifiers)

Constructor to create a claim. This internally creates a new statement, so if you want to create a statement later on just use StatementImpl directly.

Parameters:

subject - the subject the Claim refers to

mainSnak - the main Snak of the Claim

qualifiers - the qualifiers of the Claim, grouped in SnakGroups

ClaimImpl

public ClaimImpl(StatementImpl statement)

Constructor used to initialize a claim from a JacksonStatement, should only be used internally.

Parameters:

statement - the statement which contains this claim

Method Detail

getSubject

public EntityIdValue getSubject()

Description copied from interface: Claim

The subject that the claim refers to, e.g., the id of "Berlin".

Specified by:

getSubject in interface Claim

Returns:

EntityId of the subject

getMainSnak

public Snak getMainSnak()

Description copied from interface: Claim

Main Snak of the statement. This Snak refers directly to the subject, e.g., the ValueSnak "Population: 3000000".

Specified by:

getMainSnak in interface Claim

Returns:

the main snak

getQualifiers

public List<SnakGroup> getQualifiers()

Description copied from interface: Claim

Groups of auxiliary Snaks, also known as qualifiers, that provide additional context information for this claim. For example, "as of: 2014" might be a temporal context given for a claim that provides a population number. The snaks are grouped by the property that they use.

Specified by:

getQualifiers in interface Claim

Returns:

list of snak groups

getAllQualifiers

public Iterator<Snak> getAllQualifiers()

Description copied from interface: Claim

Returns an iterator over all qualifiers, without considering qualifier groups. The relative order of qualifiers is preserved.

Specified by:

getAllQualifiers in interface Claim

Returns:

iterator over all qualifier snaks

getValue

public Value getValue()

Description copied from interface: Claim

Convenience method to get the value of the claim's main snak, or null if there is none.

Specified by:

getValue in interface Claim

Returns:

main value of the claim, or null

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object