ORMLite update of the database

Question

I\'m actually developing an app which is using ORMLite library (which is wonderful btw) but I\'m a beginner using it.

I have a question about the update of the datab

Answer 1

Little information, is not clear whether the changes you have table structure.

a) If you do not change the database structure.

1 In the new version of your program when you start checking a previously saved version (eg in preferences) with the current (see PackageManager.getPackageInfo)

saved = 0 - User just installed the new version

saved < current - User updates your program

2 Add new data to base

3 Save current version on preferences

b) If the table structure has changed (added or remove fields)

1 Increase the version number of your database (see your extends OrmLiteSqliteOpenHelper class)

2 When the user first runs into your program, method 'onUpgrade' will be called (in your extends OrmLiteSqliteOpenHelper class) which will be transferred to old and new version numbers.

• Read the existing data in the cache (temp)
• recreate table
• Add the data from the cache + your new data