org.openrdf.model.impl

Class StatementImpl

java.lang.Object

org.openrdf.model.impl.StatementImpl

All Implemented Interfaces:

Serializable, Statement

Direct Known Subclasses:

ContextStatementImpl

public class StatementImpl
extends Object
implements Statement

An implementation of the Statement interface for statements that don't have an associated context. For statements that do have an associated context, ContextStatementImpl can be used.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
StatementImpl(Resource subject, URI predicate, Value object) Creates a new Statement with the supplied subject, predicate and object.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object other) Compares a statement object to another object.
Resource	getContext() Gets the context of this statement.
Value	getObject() Gets the object of this statement.
URI	getPredicate() Gets the predicate of this statement.
Resource	getSubject() Gets the subject of this statement.
int	hashCode() The hash code of a statement is defined as: 961 * subject.hashCode() + 31 * predicate.hashCode() + object.hashCode().
String	toString() Gives a String-representation of this Statement that can be used for debugging.

Methods inherited from class java.lang.Object

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

Constructor Detail

StatementImpl

public StatementImpl(Resource subject,
             URI predicate,
             Value object)

Creates a new Statement with the supplied subject, predicate and object.

Parameters:

subject - The statement's subject, must not be null.

predicate - The statement's predicate, must not be null.

object - The statement's object, must not be null.

Method Detail

getSubject

public Resource getSubject()

Description copied from interface: Statement

Gets the subject of this statement.

Specified by:

getSubject in interface Statement

Returns:

The statement's subject.

getPredicate

public URI getPredicate()

Description copied from interface: Statement

Gets the predicate of this statement.

Specified by:

getPredicate in interface Statement

Returns:

The statement's predicate.

getObject

public Value getObject()

Description copied from interface: Statement

Gets the object of this statement.

Specified by:

getObject in interface Statement

Returns:

The statement's object.

getContext

public Resource getContext()

Description copied from interface: Statement

Gets the context of this statement.

Specified by:

getContext in interface Statement

Returns:

The statement's context, or null in case of the null context or if not applicable.

equals

public boolean equals(Object other)

Description copied from interface: Statement

Compares a statement object to another object.

Specified by:

equals in interface Statement

Overrides:

equals in class Object

Parameters:

other - The object to compare this statement to.

Returns:

true if the other object is an instance of Statement and if their subjects, predicates and objects are equal.

hashCode

public int hashCode()

Description copied from interface: Statement

The hash code of a statement is defined as: 961 * subject.hashCode() + 31 * predicate.hashCode() + object.hashCode(). This is similar to how String.hashCode() is defined.

Specified by:

hashCode in interface Statement

Overrides:

hashCode in class Object

Returns:

A hash code for the statement.

toString

public String toString()

Gives a String-representation of this Statement that can be used for debugging.

Overrides:

toString in class Object