/**
* 回调业务逻辑
*
* @param back
* @return
*/
protected <T> T callBack(int type, DaoCallBack<T> back) {
T result = null;
SQLiteDatabase conn = null;
try {
switch (type) {
case TYPE_READ:
conn = sqlConnection.getReadableDatabase();
break;
case TYPE_WRITE:
conn = sqlConnection.getWritableDatabase();
break;
}
if (conn == null) throw new NullPointerException("SQLiteDatabase conn is null");
result = back.invoke(conn);
// conn.beginTransaction();
// conn.setTransactionSuccessful();
} catch (Exception e) {
// conn.endTransaction();
Logger.e(TAG, e);
} finally {
DBUtil.Release(conn, cursor);
}
return result;
}
