org.apache.jena.sparql.expr.nodevalue

Class NodeFunctions

java.lang.Object

org.apache.jena.sparql.expr.nodevalue.NodeFunctions

public class NodeFunctions
extends Object

Implementation of node-centric functions.

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	warningsForIRIs

Constructor Summary

Constructors

Constructor and Description
NodeFunctions()

Method Summary

Modifier and Type	Method and Description
static Node	blankNodeToIri(Node node) "Skolemize": BlankNode to IRI else return node unchanged.
static Node	checkAndGetStringLiteral(String label, NodeValue nv) check and get a string (may be a simple literal, literal with language tag or an XSD string).
static void	checkTwoArgumentStringLiterals(String label, NodeValue arg1, NodeValue arg2) Check for string operations with primary first arg and second arg (e.g.
static Node	datatype(Node node)
static NodeValue	datatype(NodeValue nv)
static Duration	duration(int seconds) A duration, tided
static Node	iri(Node n, String baseIRI) Node to Node, skolemizing, and converting strings to URIs.
static NodeValue	iri(NodeValue nv, String baseIRI) NodeValue to NodeValue, skolemizing, and converting strings to URIs.
static boolean	isBlank(Node node)
static NodeValue	isBlank(NodeValue nv)
static boolean	isIRI(Node node)
static NodeValue	isIRI(NodeValue nv)
static boolean	isLiteral(Node node)
static NodeValue	isLiteral(NodeValue nv)
static boolean	isURI(Node node)
static NodeValue	isURI(NodeValue nv)
static String	lang(Node node)
static NodeValue	lang(NodeValue nv)
static NodeValue	langMatches(NodeValue nv, NodeValue nvPattern) LANGMATCHES
static NodeValue	langMatches(NodeValue nv, String langPattern) LANGMATCHES
static boolean	langMatches(String langStr, String langPattern) The algortihm for the SPARQ function "LANGMATCHES".
static boolean	rdfTermEquals(Node n1, Node n2)
static NodeValue	rdfTermEquals(NodeValue nv1, NodeValue nv2)
static boolean	sameTerm(Node n1, Node n2)
static NodeValue	sameTerm(NodeValue nv1, NodeValue nv2)
static NodeValue	sortKey(NodeValue nv, String collation)
static String	str(Node node)
static NodeValue	str(NodeValue nv)
static NodeValue	strDatatype(NodeValue v1, NodeValue v2)
static NodeValue	strLang(NodeValue v1, NodeValue v2)
static NodeValue	struuid()
static NodeValue	uuid()

Methods inherited from class java.lang.Object

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

Field Detail

warningsForIRIs

public static boolean warningsForIRIs

Constructor Detail

NodeFunctions

public NodeFunctions()

Method Detail

checkAndGetStringLiteral

public static Node checkAndGetStringLiteral(String label,
                                            NodeValue nv)

check and get a string (may be a simple literal, literal with language tag or an XSD string).

checkTwoArgumentStringLiterals

public static void checkTwoArgumentStringLiterals(String label,
                                                  NodeValue arg1,
                                                  NodeValue arg2)

Check for string operations with primary first arg and second arg (e.g. CONTAINS). The arguments are not used in the same way and the check operation is not symmetric.

"abc"@en is compatible with "abc" "abc" is NOT compatible with "abc"@en

sameTerm

public static NodeValue sameTerm(NodeValue nv1,
                                 NodeValue nv2)

sameTerm

public static boolean sameTerm(Node n1,
                               Node n2)

rdfTermEquals

public static NodeValue rdfTermEquals(NodeValue nv1,
                                      NodeValue nv2)

rdfTermEquals

public static boolean rdfTermEquals(Node n1,
                                    Node n2)

str

public static NodeValue str(NodeValue nv)

str

public static String str(Node node)

sortKey

public static NodeValue sortKey(NodeValue nv,
                                String collation)

datatype

public static NodeValue datatype(NodeValue nv)

datatype

public static Node datatype(Node node)

lang

public static NodeValue lang(NodeValue nv)

lang

public static String lang(Node node)

langMatches

public static NodeValue langMatches(NodeValue nv,
                                    NodeValue nvPattern)

LANGMATCHES

Parameters:

nv - The language string

nvPattern - The pattern to match against

Returns:

Boolean nodeValue

langMatches

public static NodeValue langMatches(NodeValue nv,
                                    String langPattern)

LANGMATCHES

Parameters:

nv - The language string

langPattern - The pattern to match against

Returns:

Boolean nodeValue

langMatches

public static boolean langMatches(String langStr,
                                  String langPattern)

The algortihm for the SPARQ function "LANGMATCHES".

Parameters:

langStr - The language string

langPattern - The pattern to match against

Returns:

Whether there is a match.

isIRI

public static NodeValue isIRI(NodeValue nv)

isIRI

public static boolean isIRI(Node node)

isURI

public static NodeValue isURI(NodeValue nv)

isURI

public static boolean isURI(Node node)

isBlank

public static NodeValue isBlank(NodeValue nv)

isBlank

public static boolean isBlank(Node node)

isLiteral

public static NodeValue isLiteral(NodeValue nv)

isLiteral

public static boolean isLiteral(Node node)

blankNodeToIri

public static Node blankNodeToIri(Node node)

"Skolemize": BlankNode to IRI else return node unchanged.

iri

public static NodeValue iri(NodeValue nv,
                            String baseIRI)

NodeValue to NodeValue, skolemizing, and converting strings to URIs.

iri

public static Node iri(Node n,
                       String baseIRI)

Node to Node, skolemizing, and converting strings to URIs.

struuid

public static NodeValue struuid()

uuid

public static NodeValue uuid()

strDatatype

public static NodeValue strDatatype(NodeValue v1,
                                    NodeValue v2)

strLang

public static NodeValue strLang(NodeValue v1,
                                NodeValue v2)

duration

public static Duration duration(int seconds)

A duration, tided