NPE on PrimaryKeySnapshotGenerator about liquibase-hibernate HOT 2 CLOSED

I have the same issue. It happens when the primary key is made of several columns and not generated by an ID annotation. One of the example I have in my code looks like this:

@OneToMany(cascade=CascadeType.ALL)
@MapKeyClass(Key.class)
private Map<Key, Enitty> entities; 

In this case I end up with a primary key named PRIMARY in MySQL. However the named in the hibernate primary key is set to null. I haven't confirmed in the hibernate generated DDL, but I believe this name is RDBMS specific and is set when no name is specified when creating a PK. So it could be something else for other database.

I got it working by adding something like this

if(hbnPrimaryKeyName==null){
   hbnPrimaryKeyName = "PRIMARY";
}

in the addTo method of the PrimaryKeySnapshotGenerator. This is not a fix but I believe it helps to pin points the source of error to the piece of code that covers the cases of truncated key names.

from liquibase-hibernate.

Thanks for the test cases, that helps. The main problem was that I had fixed the issue in liquibase-hibernate/master but you are using the 4.2 branch. Since you are running against Hibernate 4.3.6 you can just use the liquibase-hibernate artifact. That version supports 4.3+ Is there a reason you were using liquibase-hibernate4.2?

I did merge master into the 4.2 branch and push the changes up which should fix it on both branches now.

from liquibase-hibernate.