Hibernate cascade Save Problem

Today's encounter a problem, engaged in a long day. Make a note.

Hibernate cascade is saved, the Cascade relationship is set, but the new is always the primary table insert, from the table update. The following is an error message:

Batch Update returned unexpected row count from Update [0]; Actual row count:0; Expected:1

The interpretation on the web is caused by an ID conflict, where the ID is defined in the database, and the class is inserted with the ID assigned to it.

Workaround: Remove the database ID from the increment, regenerate the class file, choose the ID auto-increment policy to select the ID, that is, hibernate.

Reference: http://blog.csdn.net/ssyan/article/details/7471343

Hibernate cascade Save Problem