org.wikidata.wdtk.datamodel.implementation

Class StatementImpl

java.lang.Object

org.wikidata.wdtk.datamodel.implementation.StatementImpl

All Implemented Interfaces:

Statement

public class StatementImpl
extends Object
implements Statement

Implementation of Statement.

Author:

Markus Kroetzsch

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj)
Claim	getClaim() Get the Claim object that this statement refers to.
StatementRank	getRank()
List<? extends Reference>	getReferences() Get a list of references for this Statement.
String	getStatementId() Return the id used to identify this statement.
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getClaim

public Claim getClaim()

Description copied from interface: Statement

Get the Claim object that this statement refers to.

Specified by:

getClaim in interface Statement

Returns:

the claim that this statement refers to

getRank

public StatementRank getRank()

Specified by:

getRank in interface Statement

Returns:

the rank of the Statement

See Also:

StatementRank

getReferences

public List<? extends Reference> getReferences()

Description copied from interface: Statement

Get a list of references for this Statement. Each reference is represented by a list of Snaks, which provide information about the reference.

Specified by:

getReferences in interface Statement

Returns:

the list of references

getStatementId

public String getStatementId()

Description copied from interface: Statement

Return the id used to identify this statement.

Statement ids are used by Wikibase to allow certain interactions though the API, especially the atomic modification of Statements (modifications of statements can be viewed as deletions followed by insertions, but doing this in several steps though the API is not practical). In the current Wikibase implementation, the id is a string that begins with the (lowercased) local ID of the subject of the statement, followed by a dollar sign and a randomly generated UUID. Thus statements of different subjects can never have the same id, and it is extremely unlikely that two statements of the one subject ever have the same id. However, it is possible that two statements with the same content differ in their id, since the id is not based on the content.

Callers should not make any assumptions about the stability of statement ids over time, or about the internal format of the ids.

Specified by:

getStatementId in interface Statement

Returns:

the statement string id

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