package com.meidusa.amoeba.parser.function;
import java.util.List;
import com.meidusa.amoeba.parser.expression.Expression;
import com.meidusa.amoeba.sqljep.ParseException;
public class Instr extends AbstractFunction {
@SuppressWarnings("unchecked")
public Comparable evaluate(List<Expression> list, Object[] parameters)
throws ParseException {
if(list.size() != 2){
return null;
}
String param1 = (String)list.get(0).evaluate(parameters);
String param2 = (String)list.get(1).evaluate(parameters);
if(param1 == null || param2 == null){
return 0;
}
return param1.indexOf(param2) +1;
}
}