Package hydra.query

Class TriplePattern

java.lang.Object

hydra.query.TriplePattern

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<TriplePattern>

public class TriplePattern
extends java.lang.Object
implements java.io.Serializable, java.lang.Comparable<TriplePattern>

A subject/predicate/object pattern

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
Node	object	The object of the pattern
static Name	OBJECT	Name of the hydra.query.TriplePattern.object field.
Path	predicate	The predicate (property) of the pattern
static Name	PREDICATE	Name of the hydra.query.TriplePattern.predicate field.
Node	subject	The subject of the pattern
static Name	SUBJECT	Name of the hydra.query.TriplePattern.subject field.
static Name	TYPE_	Name of the hydra.query.TriplePattern type.

Constructor Summary

Constructors

Constructor	Description
TriplePattern(Node subject, Path predicate, Node object)	Constructs an immutable TriplePattern.

Method Summary

Modifier and Type	Method	Description
int	compareTo(TriplePattern other)
boolean	equals(java.lang.Object other)
int	hashCode()
TriplePattern	withObject(Node object)	Returns a copy of this TriplePattern with object replaced.
TriplePattern	withPredicate(Path predicate)	Returns a copy of this TriplePattern with predicate replaced.
TriplePattern	withSubject(Node subject)	Returns a copy of this TriplePattern with subject replaced.

Methods inherited from class java.lang.Object

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

Field Detail

TYPE_

public static final Name TYPE_

Name of the hydra.query.TriplePattern type.

SUBJECT

public static final Name SUBJECT

Name of the hydra.query.TriplePattern.subject field.

PREDICATE

public static final Name PREDICATE

Name of the hydra.query.TriplePattern.predicate field.

OBJECT

public static final Name OBJECT

Name of the hydra.query.TriplePattern.object field.

subject

public final Node subject

The subject of the pattern

predicate

public final Path predicate

The predicate (property) of the pattern

object

public final Node object

The object of the pattern

Constructor Detail

TriplePattern

public TriplePattern(Node subject,
                     Path predicate,
                     Node object)

Constructs an immutable TriplePattern.

Parameters:

subject - The subject of the pattern

predicate - The predicate (property) of the pattern

object - The object of the pattern

Method Detail

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

compareTo

public int compareTo(TriplePattern other)

Specified by:

compareTo in interface java.lang.Comparable<TriplePattern>

withSubject

public TriplePattern withSubject(Node subject)

Returns a copy of this TriplePattern with subject replaced.

withPredicate

public TriplePattern withPredicate(Path predicate)

Returns a copy of this TriplePattern with predicate replaced.

withObject

public TriplePattern withObject(Node object)

Returns a copy of this TriplePattern with object replaced.