org.apache.jena.graph

Class Node_Literal

java.lang.Object

org.apache.jena.graph.Node

org.apache.jena.graph.Node_Concrete

org.apache.jena.graph.Node_Literal

All Implemented Interfaces:

Serializable

public class Node_Literal
extends Node_Concrete

An RDF node holding a literal value. Literals may have datatypes.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.jena.graph.Node

Node.NotLiteral

Field Summary

Fields inherited from class org.apache.jena.graph.Node

ANY, NULL

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object other) Nodes only equal other Nodes that have equal labels.
Object	getIndexingValue() Literal nodes defer their indexing value to the component literal.
LiteralLabel	getLiteral() Answer the literal value of a literal node, or throw an UnsupportedOperationException if it's not a literal node
RDFDatatype	getLiteralDatatype() Answer the RDF datatype object of this node's literal value, if it is a literal; otherwise die horribly.
String	getLiteralDatatypeURI() Answer the data-type URI of this node's literal value, if it is a literal; otherwise die horribly.
boolean	getLiteralIsXML()
String	getLiteralLanguage() Answer the language of this node's literal value, if it is a literal; otherwise die horribly.
String	getLiteralLexicalForm() Answer the lexical form of this node's literal value, if it is a literal; otherwise die horribly.
Object	getLiteralValue() Answer the value of this node's literal value, if it is a literal; otherwise die horribly.
boolean	isLiteral() Answer true iff this node is a literal node [subclasses override]
boolean	matches(Node x) Answer true iff this node accepts the other one as a match.
boolean	sameValueAs(Object o) Test that two nodes are semantically equivalent.
String	toString(PrefixMapping pm, boolean quoting) Answer a human readable representation of this Node, quoting literals if specified, and compressing URIs using the prefix mapping supplied.
Object	visitWith(NodeVisitor v) Visit a Node and dispatch on it to the appropriate method from the NodeVisitor v.

Methods inherited from class org.apache.jena.graph.Node_Concrete

isConcrete

Methods inherited from class org.apache.jena.graph.Node

create, getBlankNodeId, getBlankNodeLabel, getLocalName, getName, getNameSpace, getURI, hashCode, hasURI, isBlank, isURI, isVariable, toString, toString, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

getLiteral

public LiteralLabel getLiteral()

Description copied from class: Node

Answer the literal value of a literal node, or throw an UnsupportedOperationException if it's not a literal node

Overrides:

getLiteral in class Node

getLiteralValue

public final Object getLiteralValue()

Description copied from class: Node

Answer the value of this node's literal value, if it is a literal; otherwise die horribly.

Overrides:

getLiteralValue in class Node

getLiteralLexicalForm

public final String getLiteralLexicalForm()

Description copied from class: Node

Answer the lexical form of this node's literal value, if it is a literal; otherwise die horribly.

Overrides:

getLiteralLexicalForm in class Node

getLiteralLanguage

public final String getLiteralLanguage()

Description copied from class: Node

Answer the language of this node's literal value, if it is a literal; otherwise die horribly.

Overrides:

getLiteralLanguage in class Node

getLiteralDatatypeURI

public final String getLiteralDatatypeURI()

Description copied from class: Node

Answer the data-type URI of this node's literal value, if it is a literal; otherwise die horribly.

Overrides:

getLiteralDatatypeURI in class Node

getLiteralDatatype

public final RDFDatatype getLiteralDatatype()

Description copied from class: Node

Answer the RDF datatype object of this node's literal value, if it is a literal; otherwise die horribly.

Overrides:

getLiteralDatatype in class Node

getLiteralIsXML

public final boolean getLiteralIsXML()

Overrides:

getLiteralIsXML in class Node

toString

public String toString(PrefixMapping pm,
                       boolean quoting)

Description copied from class: Node

Answer a human readable representation of this Node, quoting literals if specified, and compressing URIs using the prefix mapping supplied.

Overrides:

toString in class Node

isLiteral

public boolean isLiteral()

Description copied from class: Node

Answer true iff this node is a literal node [subclasses override]

Overrides:

isLiteral in class Node

getIndexingValue

public Object getIndexingValue()

Literal nodes defer their indexing value to the component literal.

Overrides:

getIndexingValue in class Node

See Also:

Node.getIndexingValue()

visitWith

public Object visitWith(NodeVisitor v)

Description copied from class: Node

Visit a Node and dispatch on it to the appropriate method from the NodeVisitor v.

Specified by:

visitWith in class Node

Parameters:

v - the visitor to apply to the node

Returns:

the value returned by the applied method

equals

public boolean equals(Object other)

Description copied from class: Node

Nodes only equal other Nodes that have equal labels.

Specified by:

equals in class Node

sameValueAs

public boolean sameValueAs(Object o)

Test that two nodes are semantically equivalent. In some cases this may be the same as equals, in others equals is stricter. For example, two xsd:int literals with the same value but different language tag are semantically equivalent but distinguished by the java equality function in order to support round tripping.

Default implementation is to use equals, subclasses should override this.

Overrides:

sameValueAs in class Node

matches

public boolean matches(Node x)

Description copied from class: Node

Answer true iff this node accepts the other one as a match. The default is an equality test; it is over-ridden in subclasses to provide the appropriate semantics for literals, ANY, and variables.

Overrides:

matches in class Node

Parameters:

x - a node to test for matching

Returns:

true iff this node accepts the other as a match