The Find Order page at ordermgr/control/searchorders does not filter results.
Add ability to find by orderName
This patch adds the .where(cond) method missing from the query statement. Would it be better, when encountered during bug fixes such as this one, to replace legacy queries (those using the EntityQuery.use(delegator).select()...etc) with newer methods (delegator.find() variants)?
It's the other way around - the newer EntityQuery methods are replacing the older Delegator methods.
Your patch is in