Foreign key constraint fails (jdbc, jpa, mysql)

Hello

Maybe this is a configuration problem on my end, but I tried it based on the sample ‘lightmin-jpa-application’ as well. The following describes what I did with the lightmin-jpa-application (all in ApplicationConfiguration.java):

1. Instead of a H2 in memory database, I changed the datasource(s) to

HikariDataSource dataSource = new HikariDataSource();
dataSource.setDriverClassName("org.mariadb.jdbc.Driver");
(...)

1. Changed the database from H2 to Mysql:

hibernateJpaVendorAdapter.setDatabase(Database.MYSQL);

1. Added the jdbc configuration repository annotation:

@EnableLightminJdbcConfigurationRepository

Of course I had to add the respective dependencies in the pom.

After I created the required tables I was able to start the application just fine. However, when I try to add a new scheduler (cron) the operation fails with the following exception:

PreparedStatementCallback; SQL [INSERT INTO BATCH_JOB_CONFIGURATION_VALUE (job_configuration_id,value_key, configuration_value) VALUES (?,?,?)]; (conn=603) Cannot add or update a child row: a foreign key constraint fails (testlightmin.batch_job_configuration_value, CONSTRAINT batch_job_configuration_value_ibfk_1 FOREIGN KEY (job_configuration_id) REFERENCES batch_job_configuration (job_configuration_); nested exception is java.sql.BatchUpdateException: (conn=603) Cannot add or update a child row: a foreign key constraint fails (testlightmin.batch_job_configuration_value, CONSTRAINT batch_job_configuration_value_ibfk_1 FOREIGN KEY (job_configuration_id) REFERENCES batch_job_configuration (job_configuration_)

The autoincrement value on BATCH_JOB_CONFIGURATION.job_configuration_id does increase, but no record is ever stored. Could there be a problem with a transaction, or did I miss something?

[tuxdevelop]

Hi, versions 1.0.2 and 2.0.2 are released and they are containing the fix.

[tuxdevelop]

Hi @kevinzogg, thank you very much. I will create a 2.0.2 release as soon as possible which includes the fix.

Greetings,

Marcel