Bidirectional Many to Many with BaseClass and tablePerHierarchy false fails

[Tobias Manthey]

The following example is based on the official bidirectional many-to-many example and will fails with

org.hibernate.AssertionFailure: Table mm_author_books not found

The change is basically deriving from an even emtpy subclass with just with tablePerHierachy set to false. As any uni-directional many-to-many mapping does work based on the same principles I believe this is a bug.

class SomeBase {

    static mapping = {
        tablePerHierarchy false

    }
 }

class Book extends SomeBase {

    String title

    static belongsTo = Author

    static hasMany = [authors: Author]

    static mapping = {
        authors joinTable: [name: "mm_author_books", key: 'mm_book_id' ]
    }
}

class Author extends SomeBase {

    String name

    List books

    static hasMany = [books: Book]

    static mapping = {
        books joinTable: [name: "mm_author_books", key: 'mm_author_id']
    }
}