Problems with liquibase preconditions in recommendation module

[betoboullosa]

• There is no precondition for adding the column learning_record.changeLocation
• There is no precondition for changing the column recommender.threshold
• There is no onFail parameter for adding the column recommender.enabled

[reckart]

Also, most of the Liquibase configuration for these tables are still in inception-active-learning/src/main/resources/de/tudarmstadt/ukp/inception/active-learning/model/db-changelog.xml but the entities are now in inception-recommendation-api/src/main/java/de/tudarmstadt/ukp/inception/recommendation/api/model. I guess the db-changelog.xml needs to be merged with the one in inception-recommendation-api?

[betoboullosa]

Changelog from Actdive Learning has been deleted, its contents were merged into the recommedation module changeset.

[betoboullosa]

@rcffc I've noticed that the demo server recommender table doesn't have the classifierId column anymore. However, when creating the INCEpTION database from scratch using liquibase, that column is still being created and is not deleted in the end. Is that column still used? Otherwise, where is the delete column changeset for it?

[rcffc]

It is not used anymore. I have pushed a commit which drops the column.