How to use

slice

method

in

org.apache.jena.sparql.engine.ref.Evaluator

@Override
public void visit(OpSlice opSlice)
{
  Table table = eval(opSlice.getSubOp()) ;
  table = evaluator.slice(table, opSlice.getStart(), opSlice.getLength()) ;
  push(table) ;
}

@Override
public void visit(OpTopN opTop)
{
  Table table = eval(opTop.getSubOp()) ;
  //table = evaluator.topN(table, opTop.getLimti(), opTop.getConditions()) ;
  table = evaluator.order(table, opTop.getConditions()) ;
  table = evaluator.slice(table, 0, opTop.getLimit()) ;
  push(table) ;
}