public String visit(final ASTFilterConstraint node) {
final Node n = new SimpleNode(0);
final Node parent = node.jjtGetParent();
n.jjtAddChild(node, 0);
node.jjtSetParent(n);
parent.replaceChild2(node, n);
n.jjtSetParent(parent);
this.applyRules(node);
String ret = "";
final String prefix = (parent instanceof ASTOrderConditions || parent instanceof ASTHaving)? "" : "FILTER";
final String postfix = (parent instanceof ASTOrderConditions || parent instanceof ASTHaving)? "" : ".\n";