org.topbraid.spin.util

Class SPINExpressions

java.lang.Object

org.topbraid.spin.util.SPINExpressions

public class SPINExpressions
extends Object

Static utilities on SPIN Expressions.

Author:

Holger Knublauch

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.jena.shared.PrefixMapping	emptyPrefixMapping

Constructor Summary

Constructors

Constructor and Description
SPINExpressions()

Method Summary

Modifier and Type	Method and Description
static String	checkExpression(String str, org.apache.jena.rdf.model.Model model)
static org.apache.jena.rdf.model.RDFNode	evaluate(org.apache.jena.rdf.model.Resource expression, org.apache.jena.query.Dataset dataset, org.apache.jena.query.QuerySolution bindings)
static org.apache.jena.rdf.model.RDFNode	evaluate(org.apache.jena.rdf.model.Resource expression, org.apache.jena.rdf.model.Model queryModel, org.apache.jena.query.QuerySolution bindings) Evaluates a given SPIN expression.
static String	getExpressionString(org.apache.jena.rdf.model.RDFNode expression)
static String	getExpressionString(org.apache.jena.rdf.model.RDFNode expression, boolean usePrefixes)
static boolean	isExpression(org.apache.jena.rdf.model.RDFNode node) Checks whether a given RDFNode is an expression.
static org.apache.jena.sparql.expr.Expr	parseARQExpression(String str, org.apache.jena.rdf.model.Model model)
static org.apache.jena.rdf.model.RDFNode	parseExpression(org.apache.jena.sparql.expr.Expr expr, org.apache.jena.rdf.model.Model model)
static org.apache.jena.rdf.model.RDFNode	parseExpression(String str, org.apache.jena.rdf.model.Model model)
static void	printExpressionString(PrintContext p, org.apache.jena.rdf.model.RDFNode node, boolean nested, boolean force, org.apache.jena.shared.PrefixMapping prefixMapping)

Methods inherited from class java.lang.Object

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

Field Detail

emptyPrefixMapping

public static final org.apache.jena.shared.PrefixMapping emptyPrefixMapping

Constructor Detail

SPINExpressions

public SPINExpressions()

Method Detail

checkExpression

public static String checkExpression(String str,
                                     org.apache.jena.rdf.model.Model model)

evaluate

public static org.apache.jena.rdf.model.RDFNode evaluate(org.apache.jena.rdf.model.Resource expression,
                                                         org.apache.jena.rdf.model.Model queryModel,
                                                         org.apache.jena.query.QuerySolution bindings)

Evaluates a given SPIN expression. Prior to calling this, the caller must make sure that the expression has the most specific Java type, e.g. using SPINFactory.asExpression().

Parameters:

expression - the expression (must be cast into the best possible type)

queryModel - the Model to query

bindings - the initial bindings

Returns:

the result RDFNode or null

evaluate

public static org.apache.jena.rdf.model.RDFNode evaluate(org.apache.jena.rdf.model.Resource expression,
                                                         org.apache.jena.query.Dataset dataset,
                                                         org.apache.jena.query.QuerySolution bindings)

getExpressionString

public static String getExpressionString(org.apache.jena.rdf.model.RDFNode expression)

getExpressionString

public static String getExpressionString(org.apache.jena.rdf.model.RDFNode expression,
                                         boolean usePrefixes)

isExpression

public static boolean isExpression(org.apache.jena.rdf.model.RDFNode node)

Checks whether a given RDFNode is an expression. In order to be regarded as expression it must be a well-formed function call, aggregation or variable.

Parameters:

node - the RDFNode

Returns:

true if node is an expression

parseARQExpression

public static org.apache.jena.sparql.expr.Expr parseARQExpression(String str,
                                                                  org.apache.jena.rdf.model.Model model)

parseExpression

public static org.apache.jena.rdf.model.RDFNode parseExpression(String str,
                                                                org.apache.jena.rdf.model.Model model)

parseExpression

public static org.apache.jena.rdf.model.RDFNode parseExpression(org.apache.jena.sparql.expr.Expr expr,
                                                                org.apache.jena.rdf.model.Model model)

printExpressionString

public static void printExpressionString(PrintContext p,
                                         org.apache.jena.rdf.model.RDFNode node,
                                         boolean nested,
                                         boolean force,
                                         org.apache.jena.shared.PrefixMapping prefixMapping)