public void delete(Host host) {
if (host.getId() < 0) return;
SQLiteDatabase db = getWritableDatabase();
db.delete(TABLE_HOSTS, "_id = ?", new String[] {String.valueOf(host.getId())});
db.close();
}
public void update(Host host) {
SQLiteDatabase db = getReadableDatabase();
ContentValues values = host.getValues();
db.update(TABLE_HOSTS, values, "_id =?", new String[] {String.valueOf(host.getId())});
db.close();
}