Excluding Hibernate entities from auto-generation

#java #hibernate #tips

Today I had to do something completely new with Hibernate, within the scope of a unit test. I had a group of entities and wanted to exclude one of them from the schema auto-generation (hibernate.hbm2ddl.auto=create).

After spending a couple of hours trying out different things and reading Stackoverflow answers, I hit jackpot with this cool solution:

implement the SchemaFilterProvider and the SchemaFilter interfaces
in the SchemaFilter implementation, add an if condition to includeTable so that it returns false for the table that you don’t want to create
add hibernate.properties to the classpath and define hibernate.hbm2ddl.schema_filter_provider to point to the SchemaFilterProvider implementation

What follows is an example of an implementation. In my case, I want to exclude all entities that would create a table that has namespace in its name.

Reference: https://stackoverflow.com/questions/6212144/how-to-disable-schema-validation-in-hibernate-for-certain-entities

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