org.eclipse.rdf4j.model.util

Class Statements

java.lang.Object

org.eclipse.rdf4j.model.util.Statements

public class Statements
extends Object

Utility methods for Statement objects.

Author:

Jeen Broekstra

Constructor Summary

Constructors

Constructor and Description
Statements()

Method Summary

Modifier and Type	Method and Description
static void	consume(ValueFactory vf, Resource subject, IRI predicate, Value object, java.util.function.Consumer<Statement> consumer, Resource... contexts) Creates one or more Statement objects with the given subject, predicate and object, one for each given context, and sends each created statement to the supplied Consumer.
static <C extends Collection<Statement>> C	create(ValueFactory vf, Resource subject, IRI predicate, Value object, C collection, Resource... contexts) Creates one or more Statement objects with the given subject, predicate and object, one for each given context.
static boolean	isSameTriple(Statement st1, Statement st2) Checks if the two statements represent the same triple (that is, they have equal subject, predicate, and object).
static Statement	stripContext(Statement statement) Strips the context (if any) from the supplied statement and returns a statement with the same subject, predicate and object, but with no assigned context.
static Statement	stripContext(ValueFactory vf, Statement statement) Strips the context (if any) from the supplied statement and returns a statement with the same subject, predicate and object, but with no assigned context.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Statements

public Statements()

Method Detail

consume

public static void consume(ValueFactory vf,
                           Resource subject,
                           IRI predicate,
                           Value object,
                           java.util.function.Consumer<Statement> consumer,
                           Resource... contexts)

Creates one or more Statement objects with the given subject, predicate and object, one for each given context, and sends each created statement to the supplied Consumer. If no context is supplied, only a single statement (without any assigned context) is created.

Parameters:

vf - the ValueFactory to use for creating statements.

subject - the subject of each statement. May not be null.

predicate - the predicate of each statement. May not be null.

object - the object of each statement. May not be null.

consumer - the Consumer function for the produced statements.

contexts - the context(s) for which to produce statements. This argument is an optional vararg: leave it out completely to produce a single statement without context.

create

public static <C extends Collection<Statement>> C create(ValueFactory vf,
                                                         Resource subject,
                                                         IRI predicate,
                                                         Value object,
                                                         C collection,
                                                         Resource... contexts)

Creates one or more Statement objects with the given subject, predicate and object, one for each given context. If no context is supplied, only a single statement (without any assigned context) is created.

Parameters:

vf - the ValueFactory to use for creating statements.

subject - the subject of each statement. May not be null.

predicate - the predicate of each statement. May not be null.

object - the object of each statement. May not be null.

collection - the collection of Statements to which the newly created Statements will be added. May not be null.

contexts - the context(s) for which to produce statements. This argument is an optional vararg: leave it out completely to produce a single statement without context.

Returns:

the input collection of Statements, with the newly created Statements added.

stripContext

public static Statement stripContext(Statement statement)

Strips the context (if any) from the supplied statement and returns a statement with the same subject, predicate and object, but with no assigned context.

Parameters:

statement - the statement to strip the context from

Returns:

a statement without context

Since:

3.1.0

stripContext

public static Statement stripContext(ValueFactory vf,
                                     Statement statement)

Strips the context (if any) from the supplied statement and returns a statement with the same subject, predicate and object, but with no assigned context.

Parameters:

vf - the ValueFactory to use for creating a new Statement.

statement - the statement to strip the context from.

Returns:

a statement without context

Since:

3.1.0

isSameTriple

public static boolean isSameTriple(Statement st1,
                                   Statement st2)

Checks if the two statements represent the same triple (that is, they have equal subject, predicate, and object). Context information is disregarded.

Parameters:

st1 - the first statement to compare. May not be null.

st2 - the second statement to compare. May not be null.

Returns:

true iff the subject, predicate and object of st1 and st2 are equal, false otherwise.

Since:

2.0

See Also:

Statement.equals(Object)