java - Hibernate query not finding "pending" entites in same transaction -

i've got app importing data manytomany structure.

    @table(name="content")     class content {       @column(.., unqiue=true)       string str;     }      @table(name="group")     class group {       @jointable("group_content"..)       list<content> contentlist;     }  

the content has unique column str (as seen above) used app identify content exist in database - , if re-use entity rather adding again.

this done findbystr(string str) method in contentdao implementation. it's implemented namedquery (from content c c.str = :str).

when run import both groups , content new , groups refeer same (new) content seem findbystr query returns null.

the query works fine outside of scenario seems when content objects has been created, not committed, query not detect them.

currently work around i'm keeping map<string, content> double check against if query returns null.

hibernate not execute insert statements immidiately. make sure before each call findbystr sql inserts new objects sent db. can ensure doing:

• tell hibernate take account new objects. example can executing session.save(group) each new group object (which take account related content objects)
• execute 1 time session.flush()

normally after these changes must available query in same transaction.