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1. how to check if a data exist on a table using hibernate    stackoverflow.com

im using hibernate with my jsp page and mySQL ,how can i do that select * from student wher userName = *** with HQL and how i chek if that username ...

2. Data retrieving with Hibernate    stackoverflow.com

when I do some insertions and updates,and then I get inserted and updated data, data is not viewed correctly in my swing application and earlier data is viewed which existed before ...

3. Data being emptied from MySQL database    forum.hibernate.org

4. mysql - hibernate gets old data    forum.hibernate.org

this one is really strange. i use a native query like "select number from table where uid = 12345" and get the correct result. then, i change the table's content - and get the same result until i restart hibernate. i tested this on another table, but there, it worked. what is going on? this can't be the second level or ...