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, Context context)	Called during query plan construction immediately after the construction of the extension instance.
NodeValue	exec(Binding binding, ExprList args, String uri, FunctionEnv env)	Call a function.

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,
 Context context)

Description copied from interface: Function

Called during query plan construction immediately after the construction of the extension instance. A function can throw ExprException if something is wrong (like wrong number of arguments).

Specified by:

build in interface Function

Parameters:

uri - The function URI

args - The parsed arguments

context - The build context.

exec

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

Description copied from interface: Function

Call a function. The argument list will not be null but may have the wrong number of arguments. FunctionBase provides a more convenient way to implement a function. Functions can throw ExprEvalException 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