Halo, hibernate Merge and cascade= "All-delete-orphan" should be carefully combined to use

Encountered a more regretful thing, using Hibernate's merge and cascade= "All-delete-orphan", the child table data was deleted.

1, use cascade= "All-delete-orphan" To do the cascade delete operation, but please be careful and gethibernatetemplate (). Merge (entity), parameters used together, when using such a combination,

Hibernate executes the gethibernatetemplate (). Merge (entity), performs an update or a save operation, but immediately deletes the data associated with the table.

Hibernate would auto remove all the relationships,

My rub .... , puzzled Ah,

2.

Hibernate:update Wf_plan_book set train_dep=?, user_id=?, training_son_type=?, Forsecast_class_time=?, TRAINING_START _time=, training_main_type=?, review_cost_arrears=?, recived_dep=?, training_grandson_type=?, TIME_PLAN=?, TEACHER_ Name=, rmark=?, Class_name=?, Training_class_name=, cost_standard=?, Training_end_time=, student_type=?, MANAGER_ People=, plan_project_nu=?, runid=?, number_of_student=?, total_revenue=?, dep_cost_received=?, FINANCIAL_COST_ Received=, cost_arrears=, appraise_cost_recived=?, appraise_cost_arrears=?, review_cost_recived=?, INCOME_COST=? Pay_cost=, training_cost_remuneration=?, training_cost_book=?, training_cost_dining=?, TRAINING_COST_CONSUME=?, Total_appraise_pay=, appraise_pay_book=?, appraise_pay_remuneration=?, appraise_pay_dining=?, APPRAISE_PAY_ Consume=, appraise_pay_spot=, boundary_benefit=?, graduate_people=?, material=?, material_student_people=? Material_graduate_people=, balance=?, appraise_balance=?, total_pay=?, unit_number=?, Not_Unit_number=, unit_revenue=?, not_unit_revenue=, class_number=?, day_person_number=?, plan_book_fileids=?, process _flag=, process_sign=?, monthly=?, training_card_number=?, received_train_cost=?, received_review_cost=?, RECEIVED_ Appraisal_cost=, total_review_pay=?, is_train_class=?, is_closed=? where mainid=?
Hibernate:delete from Tbl_financial_pay where financial_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_consumption_pay where consumption_pay_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Tbl_student_info_pay where student_id=?
Hibernate:delete from Wf_teacher_remuneration where mainid=?