}
DbEntity ent = mediator.getCurrentDbEntity();
if (ent != null && !Util.nullSafeEquals(ent.getQualifier(), qualifier)) {
ExpressionConvertor convertor = new ExpressionConvertor();
try {
String oldQualifier = convertor.valueAsString(ent.getQualifier());
if (!Util.nullSafeEquals(oldQualifier, qualifier)) {
Expression exp = (Expression) convertor.stringAsValue(qualifier);
ent.setQualifier(exp);
mediator.fireDbEntityEvent(new EntityEvent(this, ent));
}
}
catch (IllegalArgumentException ex) {