Hi,

A list of search results are retrieved using DetachedCriteria. Is it possible to make detached criteria be part of a URL so that user can bookmark the query results page?

DetachedCriteria object --> string (part of URL)
--> DetachedCriteria object

Thanks!

David

There is no support in hibernate for that sort of thing. However, the complete setup of a Criteria is reconstructable from its toString() method, so if you want to write a Criteria ->URL attributes -> Criteria lexer/parser, the hibernate tools project would love to hear from you.

Can I just put
String criteria-string =aCriteria.toString()
on the URL?

getResults?queryString=[criteria-string]

The servlet "getResults" can re-construct criteria object from criteria-string.

Does this make sense? One concern is that the string may be very very long.

Thanks!

Print out the string and play with it. You won't be able to use it directly because it's not in a format compatible with URL parameter strings, but it will be relatively easy to use StringTokenizer to parse the string, you won't have to get any more complicated than that.

There are alternatives, of course. The best would probably to put an API over DetachedCriteria that "natively" supports URL parameter strings. If you write a standard API that convert in both directions, then all your needs are met.