Updating database examples java

Posted by / 11-Apr-2020 02:52

Updating database examples java

Employee Details=Id= 20, Name= Kumar1, Salary= 1000.0, 5. Before committing save transaction Hibernate: update EMPLOYEE set emp_name=?

After committing save transaction ***** Hibernate: select employee0_.emp_id as emp_id1_1_0_, employee0_.emp_name as emp_name2_1_0_, employee0_.emp_salary as emp_sala3_1_0_, address1_.emp_id as emp_id1_0_1_, address1_.address_line1 as address_2_0_1_, address1_as city3_0_1_, address1_.zipcode as zipcode4_0_1_ from EMPLOYEE employee0_ left outer join ADDRESS address1_ on employee0_.emp_id=address1_.emp_id where employee0_.emp_id=? package com.journaldev.hibernate.main; import org.hibernate.

Before committing update transaction Hibernate: update EMPLOYEE set emp_name=?

This is the major difference with merge() from all other methods. package com.journaldev.hibernate.main; import org.hibernate.

***** Notice that first employee object is inserted, then at the time of transaction commit, update query is executed to update the name value. Hibernate save Or Update results into insert or update queries based on the provided data. Id=166 Hibernate: insert into ADDRESS (address_line1, city, zipcode, emp_id) values (?

After committing save Or Update transaction ***** 11. Id=166 Hibernate: update ADDRESS set address_line1=?

If the object properties are changed before the transaction is committed or session is flushed, it will also be saved into database. Employee persist called with transaction, id=158, address id=158 Hibernate: insert into ADDRESS (address_line1, city, zipcode, emp_id) values (? package com.journaldev.hibernate.main; import org.hibernate.

FIELD) public class Employee package com.journaldev.hibernate.model; import javax.persistence.

Cascade; @Entity @Table(name = "EMPLOYEE") @Access(value=Access Type.

) ***** Hibernate: insert into EMPLOYEE (emp_name, emp_salary) values (?

Before committing save transaction Hibernate: insert into ADDRESS (address_line1, city, zipcode, emp_id) values (?

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If we use this without transaction and we have cascading between entities, then only the primary entity gets saved unless we flush the session.