Package org.wikidata.wdtk.datamodel.interfaces

Interface Claim

All Known Implementing Classes:

ClaimFromJson, ClaimImpl

public interface Claim

Interface for Wikidata claims. Claims consist of those parts of Wikibase Statements that express a claim about a subject entity, such as the claim that Berlin has 3 million inhabitants. Additional information, such as references and ranks, are not part of the claim.

Author:

Markus Kroetzsch

Method Summary

Modifier and Type	Method	Description
java.util.Iterator<Snak>	getAllQualifiers()	Returns an iterator over all qualifiers, without considering qualifier groups.
Snak	getMainSnak()	Main Snak of the statement.
java.util.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.

Method Detail

getSubject

EntityIdValue getSubject()

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

Returns:

EntityId of the subject

getMainSnak

Snak getMainSnak()

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

Returns:

the main snak

getQualifiers

java.util.List<SnakGroup> getQualifiers()

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.

Returns:

list of snak groups

getAllQualifiers

java.util.Iterator<Snak> getAllQualifiers()

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

Returns:

iterator over all qualifier snaks

getValue

Value getValue()

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

Returns:

main value of the claim, or null