Module org.apache.jena.arq

Package org.apache.jena.sparql.function.library

Class FN_Matches

java.lang.Object

org.apache.jena.sparql.function.library.FN_Matches

All Implemented Interfaces:

Function

public class FN_Matches
extends Object
implements Function

Function for XPath fn:matches

Constructor Summary

Constructors

Constructor	Description
FN_Matches()

Method Summary

Modifier and Type	Method	Description
void	build(String uri, ExprList args)	Called during query plan construction immediately after the construction of the extension instance.
NodeValue	exec(Binding binding, ExprList args, String uri, FunctionEnv env)	Test a list of values - argument will not be null but may have the wrong number of arguments.

Methods inherited from class java.lang.Object

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

Constructor Details

FN_Matches

public FN_Matches()

Method Details

build

public void build(String uri,
 ExprList args)

Description copied from interface: Function

Called during query plan construction immediately after the construction of the extension instance. Can throw ExprBuildException if something is wrong (like wrong number of arguments).

Specified by:

build in interface Function

args - The parsed arguments

exec

public NodeValue exec(Binding binding,
 ExprList args,
 String uri,
 FunctionEnv env)

Description copied from interface: Function

Test a list of values - argument will not be null but may have the wrong number of arguments. FunctionBase provides a more convenient way to implement a function. Can throw ExprEvalsException if something goes wrong.

Specified by:

exec in interface Function

Parameters:

binding - The current solution

args - A list of unevaluated expressions

uri - The name of this

env - The execution context

Returns:

NodeValue - a value