I have a spring project using Hibernate. For dev I am using oracle as a database. But for testing purpose I am using HSQLDB.
I have SQL scripts which are compatible with oracle. I want to convert those scripts compatible with HSQLDB and load the HSQLDB with those scripts to run all test cases.
If your existing tables in Oracle are generated by Hibernate , you can just simply change hibernate.dialect property to HSQLDB dialect (i.e org.hibernate.dialect.HSQLDialect ) and then set hibernate.hbm2ddl.auto to update or create . Then , Hibernate will automatically create the tables in the HSQLDB during its start-up.
Related
How can I use both in same SpringBoot project? Will it not create conflict which one is going to create tables?
Liquibase is Version Control System dedicated for track, version, and deploy database schema changes.
Hibernate is an object-relational mapping (ORM) tool for the Java programming language which provides a framework for mapping an object-oriented domain model to a relational database.
Yes of course you can use both in same Spring Boot project. Check this official guide liquibase + Hibernate for Using Liquibase with Hibernate.
I am integrating liquibase in Spring boot project. I am planning to let hibernate run DB schema changes and run remaining DML queries via liquibase.
Is it good practice to manage DB changes via both Liquibase and
Hibernate at the same time ?
Are there any cons using the same?
Why not running everything from liquibase script? https://docs.spring.io/spring-boot/docs/current/reference/html/howto-database-initialization.html#howto-execute-liquibase-database-migrations-on-startup
We are planning to use liquibase as our database scripts automation tool for maintain and applying ddl and dml.
Is there any library which can read the ddl defined in liquibase config and generate jpa entity java class?
Liquibase is version management and database initialization tool.It created entity and relations.If you want classes to be created automatically, you can use JHipster Domain Language.
Jhipster
I am using Spring Boot 1.4.1, MySQL for our different environments (dev, qc, uat, live, staging). We are using H2 for our tests.
Sprint Boot says you can import data using data.sql
Hibernate seems to look for import.sql
Both work independently, but if I include both, only import.sql seems to run.
So, should I use data.sql or import.sql to import data into my database, and why?
When you use Spring JDBC use data.sql, when you use hibernate use import.sql
I would suggest taking a look in your hibernate.cfg.xml to choose file(s), yes, you can import files or a single file to be loaded in MySQL database. My instincts tell me this is a duplicate.
How to insert default data into table using import.sql file in Hibernate, MySQL Application
In spring integrated hibernated application,I need to change the database from sql server to oracle without code change ?
If you really just want to change the datasource
have a look at the documentation here Spring Documentation for Oracle JDBC
You need to change your datasource that you use to point to Oracle.
Import the JDBC dependency for the Oracle JDBC connector as a dependency
Configure Hibernate to use the correct dialect
e.g. oracle.jdbc.driver.OracleDriver
Don't know how you configure your environment, but that should get you started.