java - 奥姆莱特性能

Question

我正在测试 Ormlite 的性能，我对此印象深刻。那怎么可能testORMLITE_jobget()更快testORMLITE_getcursor()呢？

public void testORMLITE_jobget() throws SQLException {
    Dao<Job, Integer> dao = dbhelper.getJobDao();
    List<Job> jobs = dao.queryForAll();
    for (Job job : jobs) {
        Log.i("OrmLite", job.getName());
    }
    dbhelper.close();
}

public void testORMLITE_getcursor() throws SQLException {
    SQLiteDatabase db = dbhelper.getReadableDatabase();
    Cursor c = db.rawQuery("select * from job", null);
    if (c.moveToFirst())
        while (c.moveToNext()) {
            Log.i("Cursor", c.getString(c.getColumnIndex("name")));
        }
    c.close();
    db.close();
}

第二个问题：我是否以这种方式正确删除了外国收藏？

public void testORMLITE_jobdelete() throws SQLException{
    Job j = dbhelper.getJobDao().queryForId(5);
    dbhelper.getTagDao().delete(j.tags);
    dbhelper.getJobDao().delete(j);
}