Question

I have a little problem with getting the elements in my sqlite database in android.My database looks like this :

id  /   serverName  /  objectId  /  objectOid  /  ....//objectId is actually userId-which I need to compare

I’m receiving an data from the server and I need to check the id of user from the server and local user id from the database.I have this piece of code :

public static Integer lUserIdByServerUserId(int serverUserId, String serverName){
    return localUserIdByServerUserId( serverUserId,  serverName);

}

private static Integer localUserIdByServerUserId(int serverUserId, String serverName){
    DataBaseHelper dbHelper = new DataBaseHelper(context, "ops_sys_tpl.sqlite",null,1);
    String query = "SELECT id FROM users WHERE objectId = "+serverUserId+" AND serverName = '"+serverName+"' LIMIT 1";
    ArrayList<String> result = new ArrayList<String>();
    cursor = dbHelper.executeSQLQuery(query);
    cursor.moveToFirst();
    while(!cursor.isAfterLast()) {
        result.add(cursor.getString(cursor.getColumnIndex("objectId")));
        cursor.moveToNext();
    }

    Log.i("result ","Result : "+result.toString());
    Log.i("CURSOR ","Cursor Position : "+cursor.getPosition());
    Integer uuid = Integer.parseInt(result.get(cursor.getColumnIndex("objectId")));
    Log.w("localUSerByIdServerUserId","LocalUserByIdServerUserId result : "+uuid);
    cursor.close();
    return uuid;
}

I am trying to check all the entries in database and if there is a match return it.I’m calling this method like this :

            uuId = rpc.lUserIdByServerUserId(userId,newServerName);

and i get this exception at this line : Integer uuid = Integer.parseInt(result.get(cursor.getColumnIndex("objectId")));


  09-20 16:55:47.647: WARN/System.err(31031): java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
09-20 16:55:47.647: WARN/System.err(31031):     at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257)
09-20 16:55:47.647: WARN/System.err(31031):     at java.util.ArrayList.get(ArrayList.java:311)
09-20 16:55:47.647: WARN/System.err(31031):     at com.stampii.stampii.comm.rpc.RPCCommunicator.localUserIdByServerUserId(RPCCommunicator.java:1083)
09-20 16:55:47.647: WARN/System.err(31031):     at com.stampii.stampii.comm.rpc.RPCCommunicator.lUserIdByServerUserId(RPCCommunicator.java:1066)
09-20 16:55:47.657: WARN/System.err(31031):     at com.stampii.stampii.comm.rpc.InfoStartRPCPacket.executeBefore(InfoStartRPCPacket.java:176)
09-20 16:55:47.657: WARN/System.err(31031):     at com.stampii.stampii.user.UserLogin$2$1.run(UserLogin.java:212)
09-20 16:55:47.657: WARN/System.err(31031):     at java.lang.Thread.run(Thread.java:1102)
09-20 16:55:47.657: WARN/ERROR(31031):  Error  - java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0

And actually I have only one test entry in my database which is the same as the userID return from server.

Any ideas where is my mistake and how to fix that?

Answer 1

Problem was due to cursor’s position

Try this code for position the cursor to start point.

 if (mNotesCursor.moveToFirst()) {
      do {
         result.add(cursor.getString(cursor.getColumnIndex("objectId")));
      } while (mNotesCursor.moveToNext());
 }