Greendao DaoException Object does not have a key

Question

Using GreenDao, I somehow deleted my db to a state where I have an object that does not have a key.

My questions: how to delete / delete this object? I have not seen a function in AbstractDao that will allow me to delete another column name.

Answer 1

You can write a raw SQL query to delete a row and execute it using SQLiteDatabase, which you can get from your readable DaoSession.

DELETE FROM YourTable WHERE someColumn=?

If you want to avoid typos, you can use the tableinformation from greendao:

String query = "DELETE FROM " + YourDao.TABLENAME +
               " WHERE " + YourDao.Properties.SomeColumn.columnName + "=?";

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For more information:

Depending on how you created your scheme, there are some pitfalls:

AUTOINCREMENT NOT NULL, greendao !

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notNull().primaryKey().autoincrement(), greendao-sourcecode.

greendao-core, , , primaryKey().autoincrement().

Answer 2

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