Module org.apache.jena.arq

Package org.apache.jena.sparql.function.scripting

Class ScriptFunction

java.lang.Object

org.apache.jena.sparql.function.FunctionBase

org.apache.jena.sparql.function.scripting.ScriptFunction

All Implemented Interfaces:

Function

public class ScriptFunction
extends FunctionBase

Constructor Summary

Constructors

Constructor	Description
ScriptFunction()

Method Summary

Modifier and Type	Method	Description
void	build(String uri, ExprList args, Context cxt)	Called during query plan construction immediately after the construction of the extension instance.
void	checkBuild(String uri, ExprList args)
NodeValue	exec(List<NodeValue> args)	Function call to a list of evaluated argument values
NodeValue	exec(List<NodeValue> args, FunctionEnv env)
static boolean	isScriptFunction(String uri)

Methods inherited from class org.apache.jena.sparql.function.FunctionBase

exec

Methods inherited from class java.lang.Object

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

Constructor Details

ScriptFunction

public ScriptFunction()

Method Details

isScriptFunction

public static boolean isScriptFunction(String uri)

checkBuild

public void checkBuild(String uri,
 ExprList args)

Specified by:

checkBuild in class FunctionBase

build

public void build(String uri,
 ExprList args,
 Context cxt)

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

Overrides:

build in class FunctionBase

Parameters:

uri - The function URI

args - The parsed arguments

cxt - The build context.

exec

public NodeValue exec(List<NodeValue> args,
 FunctionEnv env)

exec

public NodeValue exec(List<NodeValue> args)

Description copied from class: FunctionBase

Function call to a list of evaluated argument values

Specified by:

exec in class FunctionBase