Package org.apache.jena.sparql.pfunction

Interface PropertyFunction

All Known Implementing Classes:

alt, assign, bag, blankNode, bnode, concat, container, ListBase, ListBase1, ListBaseList, listIndex, listLength, listMember, PathPropertyFunction, PFuncAssignToObject, PFuncAssignToSubject, PFuncListAndList, PFuncListAndSimple, PFuncSimple, PFuncSimpleAndList, PropertyFunctionBase, PropertyFunctionEval, seq, splitIRI, splitURI, str, strSplit, version, versionARQ

public interface PropertyFunction

Method Summary

Modifier and Type	Method	Description
void	build(PropFuncArg argSubject, Node predicate, PropFuncArg argObject, ExecutionContext execCxt)	Called during query plan construction immediately after the construction of the property function instance.
QueryIterator	exec(QueryIterator input, PropFuncArg argSubject, Node predicate, PropFuncArg argObject, ExecutionContext execCxt)	Create an iterator of bindings for the given inputs

Method Detail

build

void build(PropFuncArg argSubject,
           Node predicate,
           PropFuncArg argObject,
           ExecutionContext execCxt)

Called during query plan construction immediately after the construction of the property function instance.

Parameters:

argSubject - The parsed argument(s) in the subject position

predicate - The extension URI (as a Node).

argObject - The parsed argument(s) in the object position

execCxt - Execution context

exec

QueryIterator exec(QueryIterator input,
                   PropFuncArg argSubject,
                   Node predicate,
                   PropFuncArg argObject,
                   ExecutionContext execCxt)

Create an iterator of bindings for the given inputs

Parameters:

input - QueryIterator from the previous stage

argSubject - The parsed argument(s) in the subject position

predicate - The extension URI (as a Node).

argObject - The parsed argument(s) in the object position

execCxt - The execution context

Returns:

QueryIterator