cursor

问题 Given a table that stores every revision for every item. For example: +--------+----------+---------------+--------+---------------------+ | ItemId | Revision | PreviousState | State | DateChanged | +--------+----------+---------------+--------+---------------------+ | 1 | 1 | NULL | New | 2014-11-13 10:00:00 | | 1 | 2 | New | Active | 2014-11-15 10:00:00 | | 1 | 3 | Active | New | 2014-11-17 10:00:00 | | 1 | 4 | New | Active | 2014-11-19 10:00:00 | | 1 | 5 | New | Active | 2014-11-20 10:00

问题 Im try inflate follow these example public void onMapReady(GoogleMap googleMap) { cursor = mb.listar(); mMap = googleMap; // Add a marker in Sydney and move the camera //LatLng sydney = new LatLng(-34, 151); // mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney")); //mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney)); } And my methods are CajeroDAO public Cursor getAll() throws SQLException { Cursor c = MiBD.getDB().query(true, CAJEROS_TABLE, CAMPOS_CAJEROS, null,

问题 I'm trying to send database cursor from a service(An IntentService) to my Activity(Which implements a Receiver to catch any response from the service). Once i get the data from query cursor = db.query(DBHelper.DB_BOOKS_TABLE, columns, where, whereArgs, groupBy, having, orderBy); i would like to send back the cursor from the service to his caller thru the receiver. but the bundle structure just let me send tical data(Strings, ints, thinks like that). i know the bundle also let send parcelable

问题 Now I am using the following code to draw a cursor (with a greater size): Cursor emptyCursor = Toolkit.getDefaultToolkit().createCustomCursor(new BufferedImage(12, 12, BufferedImage.TYPE_INT_ARGB), new Point(0, 0), "empty"); setCursor(emptyCursor); Toolkit toolkit = Toolkit.getDefaultToolkit(); final long eventMask = AWTEvent.MOUSE_MOTION_EVENT_MASK + AWTEvent.MOUSE_EVENT_MASK + AWTEvent.KEY_EVENT_MASK; final ImageIcon icon = createImageIcon("images/cursor.png"); cursorLabel = new JLabel(icon

问题 For example , is it ok to do below ? DECLARE aId VARCHAR(20); DECLARE cur1 CURSOR FOR SELECT id FROM new_records WHERE is_loaded = false; read_loop: LOOP FETCH cur1 INTO aId; ... update new_records set is_loaded = True where id = aId ; ... CLOSE cur1; END 回答1: Cursors in MySQL are ASENSITIVE (13.6.6 Cursors). An INSENSITIVE Cursor is a Cursor that effectively causes a separate copy of its result Table to be created; the Cursor accesses that copy, rather than the original result, so any

问题 Forive me for any ignorance, but I really need help on this one and have tried Vogella and many tutorials to no avail ! My content provider query: @Override public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) { final SQLiteDatabase db = mOpenHelper.getReadableDatabase(); final int match = sUriMatcher.match(uri); switch (match) { default: { // Most cases are handled with simple SelectionBuilder final SelectionBuilder builder =

问题 Please find the below code. It runs non stop with no operations or output. what I'm doing wrong. declare cid number; cadd number; ctras number; cr varchar(2); cad number; cursor c1 IS select c_tras, c_id, c_add from customer_master; cursor c2 IS select c_address, cr from customer_address where c_id = cid; begin open c1; open c2; LOOP fetch c1 into ctras, cid, cadd; fetch c2 into cad, cr; if cr='N' THEN update customer_master set c_address = (select c_address from customer_address where cr =

问题 I'm trying to iron out the last few bugs in my application. With my current setup I have the user go through a series of listview (Category -> source -> title). Based on the position from the listview I pass a int that is used by my cursor to filter the results and give the items that belong to the previously clicked item. After navigating a few times through the different activities it crashes since the application loses the value of said int (going back and forward through the activities).

问题 I am attempting to create a stored procedure that will update a specific row and column location based on user input. My table has approximately 100 columns utilizing names in progressive increments. Ex Page1, Page2, Page3, Page 4.... etc. The data must also be updated in progressive increments as users finish different versions of each page. When the procedure is called I need it to find the user's row(Page1 is the key and unique), and put the information in where their version of the file

问题 I've been trying to use cursor loader.I started following this tutorial http://responsiveandroid.com/2012/03/19/using-an-android-cursor-loader-with-a-content-provider.html but could not understand.tutorial put me in chaos. As far i know cursorloader is an adapter,adapter job is go to content provider take data then put the data in to view. What does content resolver do ? Android document says SimpleCursorAdapter is depreciated and says to use cursor adapter,this is the tutorial that i was