ormlite

From what I see in ormlite it has implemented its annotations as well as JPA standard annotations. First of all, what was the reason of designing new set of annotations? Secondly, how one can use standard annotation like @Entity , etc instead of ormlite specific annotations. Right now, I am getting not defined error for those entities. Do I need a jar file? DataNucleus Because it isn't a real JPA implementation, and just makes use of JPA annotations for convenience. Obviously, by using it, you lose the portability offered by JPA itself, but then it may have some advantages for very specific

It is possible to save the data from a table before my model changes the database? For example i rename a column and will not lose the data. So i.e. i want to fetch all data from column c1, rename my column to c2 and write all data back. i want to fetch all data from column c1, rename my column to c2 and write all data back. Sqlite does not support the renaming of columns so this will not work under Android. You can certainly add an additional column however. There is some good documentation on schema changes under Android/ORMLite. See this page: http://ormlite.com/docs/upgrade-schema For

I want to convert sqlite query to Ormlite query. SELECT * FROM Test where strftime('%m-%Y',Date)='11-2001' I could not format date column like above query. How to format Date column in Ormlite as MM-yyyy ? Thanks. If that is the exact SQL that you want to use then you can use the Where.raw(...) method: QueryBuilder<Test, Integer> qb = testDao.queryBuilder(); qb.where().raw("strftime('%m-%Y',Date) = '11-2001'"); List<Test> results = qb.query(); However, this only seems to work if the date field is stored as a DATE_STRING type: @DatabaseField(dataType = DataType.DATE_STRING) Date date; The issue