// add selected vars
public void addQueryExpr(String s) {
try {
Expr expr = model.parseExpr(s);
if (expr instanceof RTVar) {
addQueryVar(expr);
} else {
Expr.List vars = new Expr.List();
expr.addNamedExpr(vars);
for (int i = 0; i < vars.size(); i++) addQueryVar(vars.expr(i));
}
} catch (Xcept e) {
// ignore
}
}
// constructor
public NotExpr(Expr e1) throws Xcept {
super(NOT, new Expr[] {e1});
if (e1.dataType() != BOOLEAN) throw new Xcept(this, "not expression requires BOOLEAN dataType");
}