Package org.wikidata.wdtk.datamodel.implementation

Class StatementGroupImpl

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<Statement>

org.wikidata.wdtk.datamodel.implementation.StatementGroupImpl

All Implemented Interfaces:

Iterable<Statement>, Collection<Statement>, List<Statement>, StatementGroup

public class StatementGroupImpl
extends AbstractList<Statement>
implements StatementGroup

Helper class to represent a StatementGroup.

Author:

Markus Kroetzsch, Antonin Delpeuch

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor	Description
StatementGroupImpl(List<Statement> statements)	Constructor.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
Statement	get(int i)
StatementGroup	getBestStatements()	Get the best statements of this group.
PropertyIdValue	getProperty()	Get the property used in the main snak of the Claim of each statement in this group.
List<Statement>	getStatements()	Get the list of Statements of this group.
EntityIdValue	getSubject()	Get the subject used in the Claim of each statement in this group.
int	hashCode()
boolean	isEmpty()
Iterator<Statement>	iterator()
int	size()
String	toString()
StatementGroup	withStatement(Statement statement)	Returns a new version of this group, where the given statement has been added.

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, indexOf, lastIndexOf, listIterator, listIterator, remove, removeRange, set, subList

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, remove, removeAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

addAll, contains, containsAll, remove, removeAll, replaceAll, retainAll, sort, spliterator, toArray, toArray

Constructor Details

StatementGroupImpl

public StatementGroupImpl(List<Statement> statements)

Constructor.

Parameters:

statements - a non-empty list of statements that use the same subject and main-snak property in their claim

Method Details

get

public Statement get(int i)

Specified by:

get in interface List<Statement>

Specified by:

get in class AbstractList<Statement>

iterator

public Iterator<Statement> iterator()

Specified by:

iterator in interface Collection<Statement>

Specified by:

iterator in interface Iterable<Statement>

Specified by:

iterator in interface List<Statement>

Overrides:

iterator in class AbstractList<Statement>

size

public int size()

Specified by:

size in interface Collection<Statement>

Specified by:

size in interface List<Statement>

Specified by:

size in class AbstractCollection<Statement>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<Statement>

Specified by:

isEmpty in interface List<Statement>

Overrides:

isEmpty in class AbstractCollection<Statement>

getStatements

public List<Statement> getStatements()

Description copied from interface: StatementGroup

Get the list of Statements of this group.

Specified by:

getStatements in interface StatementGroup

Returns:

a list of Statements

getBestStatements

public StatementGroup getBestStatements()

Description copied from interface: StatementGroup

Get the best statements of this group. These are the statements with rank StatementRank.PREFERRED if they exists or the one with rank StatementRank.NORMAL

Specified by:

getBestStatements in interface StatementGroup

Returns:

a subset of the current StatementGroup, or null if there are no best statements

getProperty

public PropertyIdValue getProperty()

Description copied from interface: StatementGroup

Get the property used in the main snak of the Claim of each statement in this group.

Specified by:

getProperty in interface StatementGroup

Returns:

a PropertyIdValue

getSubject

public EntityIdValue getSubject()

Description copied from interface: StatementGroup

Get the subject used in the Claim of each statement in this group.

Specified by:

getSubject in interface StatementGroup

Returns:

an EntityIdValue

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<Statement>

Specified by:

hashCode in interface List<Statement>

Overrides:

hashCode in class AbstractList<Statement>

equals

public boolean equals(Object obj)

Specified by:

equals in interface Collection<Statement>

Specified by:

equals in interface List<Statement>

Overrides:

equals in class AbstractList<Statement>

toString

public String toString()

Overrides:

toString in class AbstractCollection<Statement>

withStatement

public StatementGroup withStatement(Statement statement)

Description copied from interface: StatementGroup

Returns a new version of this group, where the given statement has been added. If some statement in the group has the same non-empty statement id, then the new statement will replace it. Otherwise the new statement is appended at the end of the list.

Specified by:

withStatement in interface StatementGroup