I need to build a project with jdk 8. When I run Maven, Build failed with the below given error.
invalid flag: –release -> [Help 1]
After removing the below version specification in pom.xml, everything went as expected.
I am in mid of a crud operation. This exception hit me today, when I updated an entity with @ManyToOne(cascade = CascadeType.ALL) relationship.
org.hibernate.PersistentObjectException: detached entity passed to persist: org.grassfield.feed.entity.Feed
To solve this bidirectional consistency problem, I need to change CascadeType.ALL to CasecaseType.MERGE.
Recently I shot this pretty lady (or mighty gentleman?) at Coney Island. This has no relation with this post anyway.
I’m doing upgrading Spring 4 to Spring 5 and Hibernate 4 to 5.
My existing functionality refused to work. It broke with the following exception.
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table ‘crm.hibernate_sequence’ doesn’t exist
I’m using MariaDB/MySQL. I don’t have to maintain any sequence tables as Oracle. In addition, it was working without any issues. All my primary keys are autogenerated with the following annotations.
private Long id;
Thanks to https://stackoverflow.com/questions/32968527/hibernate-sequence-doesnt-exist
Adding hibernate.id.new_generator_mappings=false to Hibernate properties solved the problem.
Wah, what a stupid error it was!
My Spring web app, which was running smoothly, refused to start. I don’t find any logs in log4j or tomcat log. Only clue I had was –
No Spring WebApplicationInitializer types detected on classpath
Here is how I solved it –
- Stop the tomcat
- Clean and build all eclipse projects
- Goto server tab and select the tomcat server. Press clean. Press clean work directory.
- Right click on the tomcat and remove it.
- Delete the tomcat from the eclipse run times
- Add tomcat server to the eclipse servers again
- Start the application
I’m writing a unit test for my spring DAO, which includes both write and read test cases. Here is the exception that broke the test execution.
org.hibernate.HibernateException: No Session found for current thread
Any such operations needs @Transactional annotations.
I got this exception when I executed my newly written junit test for a Spring DAO with Hibernate Validations.
After adding javax.el to pom, this is resolved.
I faced this error when exporting the database from one server to other server, as the user doesn’t exist. So I changed the incorrect username into right one as given below.
Execute this query to get the list of queries to be executed.
SELECT CONCAT("ALTER DEFINER=`youruser`@`host` VIEW ",
table_name, " AS ", view_definition, ";")
It would give list of queries as given below
ALTER DEFINER='jessica'@'%' VIEW vw_audit_log AS select `a`.`ID` AS `id`,`u`.`USER_NAME` AS `user_name`,`a`.`LOG_TYPE` AS `log_type`,`a`.`LOG_TIME` AS `log_time`,`a`.`MESSAGE` AS `message`,`a`.`STATUS` AS `status` from (`your-database-name`.`user_info` `u` join `your-database-name`.`audit_log` `a`) where (`u`.`ID` = `a`.`USER_ID`) order by `a`.`ID` desc;
ALTER DEFINER='jessica'@'%' VIEW vw_user_role AS select `ur`.`NAME` AS `ROLE_NAME`,`ur`.`EMAIL_PERMISSION` AS `EMAIL_PERMISSION`,`urm`.`user_id` AS `USER_ID`,
`urm`.`role_id` AS `ROLE_ID` from (`your-database-name`.`user_role` `ur` join `your-database-name`.`user_role_mapping` `urm`) where (`ur`.`ID` = `urm`.`role_id`);
ALTER DEFINER='jessica'@'%' VIEW vw_user_role_mapping AS select `ur`.`ROLE_NAME` AS `ROLE_NAME`,`ur`.`EMAIL_PERMISSION` AS `EMAIL_PERMISSION`,`ur`.`USER_ID` AS `USER_ID`,`ur`.`ROLE_ID` AS `ROLE_ID`,`ui`.`USER_NAME` AS `USER_NAME`,`ui`.`PASSWORD` AS `PASSWORD`,`ui`.`ENABLED` AS `ENABLED` from (`your-database-name`.`vw_user_role` `ur` join `your-database-name`.`user_info` `ui`) where (`ur`.`USER_ID` = `ui`.`ID`);
After executing this queries, the problem was resolved.