- public
- void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
- Log.d("db", "onUpgrade called");
- for(int i = oldVersion+1; i <= newVersion; i++) applyRevision(db, i);
- }
-
- private void applyRevision(SQLiteDatabase db, int
- rev_no) {
- final Resources rm = mContext.getResources();
- String rev_file = String.format(Locale.US, "sql_%d", rev_no);
-
- int res_id = rm.getIdentifier(rev_file, "raw", mContext.getPackageName());
- if (res_id == 0)
- throw new SQLException(String.format(Locale.US, "No resource for revision %d", rev_no));
- db.beginTransaction();
- try (InputStream res = rm.openRawResource(res_id)) {
- Log.d("db", "Applying revision " + String.valueOf(rev_no));
- InputStreamReader isr = new InputStreamReader(res);
- BufferedReader reader = new BufferedReader(isr);
-
- String line;
- while ((line = reader.readLine()) != null) {
- db.execSQL(line);
- }
-
- db.setTransactionSuccessful();
- }
- catch (IOException e) {
- Log.e("db", String.format("Error opening raw resource for revision %d", rev_no));
- e.printStackTrace();
- }
- finally {
- db.endTransaction();
- }
- }
- public int get_option_value(String name, int default_value) {
- String s = get_option_value(name, String.valueOf(default_value));
- try {
- return Integer.parseInt(s);
- }
- catch (Exception e) {
- Log.d("db", "returning default int value of "+name, e);
- return default_value;
- }
- }
-
- public long get_option_value(String name, long default_value) {
- String s = get_option_value(name, String.valueOf(default_value));
- try {
- return Long.parseLong(s);
- }
- catch (Exception e) {
- Log.d("db", "returning default long value of "+name, e);
- return default_value;
- }