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  • Assign value to HTML textbox from JSP

    - by prakash_d22
    Hello I am creating a web page to add some information about given product.I need to enter id,name,description and image as information.I need the id to be auto generated.I am using jsp and database as access.I am fetching the count(*)+1 value from database and assigning to my html text box but its showing as null.can i get some help? Code: <body> <%@page import="java.sql.*"%> <%! String no; %> <% try{ Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection con = DriverManager.getConnection("jdbc:odbc:pd"); ResultSet rs = null; Statement st = con.createStatement(); String sql = ("select count(*)+1 from products"); st.executeUpdate(sql); while (rs.next()) { no=rs.getString("count(*)+1"); } rs.close(); st.close(); con.close(); } catch(Exception e){} %> <Form name='Form1' action="productcode.jsp" method="post"> <table width="1024" border="0"> <tr> <td width="10">&nbsp;</td> <td width="126">Add Product: </td> <td width="277">&nbsp;</td> <td width="583">&nbsp;</td> </tr> <tr> <td>&nbsp;</td> <td>Product Id:</td> <td><label> <input type="text" name="id" value="<%= no%>"/> </label></td> <td>&nbsp;</td> .... and so on

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  • Checking for DBNull throws a StrongTypingException

    - by calico-cat
    I am using a dataset to pull data from a DB. One of the fields in a row is NULL. I know this. However, the following vb.net code throws a StrongTypingException (in the autogenerated get_SomeField() method in the dataset designer): If Not IsDBNull(aRow.SomeField) Then 'do something End If According to documentation and this question it should be fine. edit: If aRow.SomeField is DBNull.Value Then also returns the same error. Argh.

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  • Java - Adding a Node in a doubly-linked list.

    - by jacobnlsn
    Hi, I am working on some code were I need to add a Node into a doubly linked-list, this is the code I have so far: Node tempNext = cursor.getNext(); temp = new Node(item, null, cursor, tempNext); tempNext.setPrev(temp); cursor is the Node that is right before the new added Node should go.

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  • Contravariant Delegates Value Types

    - by ChloeRadshaw
    Can anyone shed light on why contravariance does not work with C# value types? The below does not work private delegate Asset AssetDelegate(int m); internal string DoMe() { AssetDelegate aw = new AssetDelegate(DelegateMethod); aw(32); return "Class1"; } private static House DelegateMethod(object m) { return null; }

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  • Alternatives to static variables in Android

    - by Mocha
    I am using static Arrays and HashMaps to store some values in my AppWidgetProvider class. But they are becoming null when the process dies, so the widget does not work anymore. Are there any alternatives to using static members to store data for an AppWidgetProvider in Android?

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  • Get Token's Name with Reflection API.

    - by Mark Tomlin
    I want to find the token's name passed by augment into a function. class Norm { const STR_NORM = 0; const INT_NORM = 0; } function foo($Arg1, $Arg2 = NULL) { getConstName($Arg1); # Should Return STR_NORM; return $Arg1, $Arg2; } echo foo(Norm::STR_NORM); Is there any way to implement getConstName via the PHP Reflection API?

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  • .NET ComboBox Autocomplete failing on slashes

    - by Clyde
    The .NET ComboBox autocomplete will not fully autocomplete with the display text contains a slash. It completes only up to the slash, leaving SelectedIndex == -1 and SelectedValue == null. This behavior stupidly persists no matter whether your autocompletesource is set to ListItems rather than FileSystem or URL. Is there any workaround for this that doesn't involve just throwing the ComboBox class away and writing a "MyComboBox" class?

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  • Testing code that uses SoftReference<T>

    - by bmargulies
    To get any code with SoftReference<T> to be fully tested, one must come up with some way to test the 'yup, it's been nulled' case. One might more or less mock this by using a 'for-test' code path to force the reference to be null, but that won't manage the queue exactly as the GC does. I wonder if anyone out can share experience in setting up a repeatable, controlled, environment, in which the GC is, in fact, provoked into collecting and nulling?

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  • Help with DateTime in format I need

    - by baron
    I am working with DateTime, trying to get date in the format like this: 03.05.2010-04.05.23 that is: dd.MM.yyyy-HH.mm.ss I'm using DateTime.ParseExact to try to achieve this (maybe wrong) So far I have: var dateInFormat = DateTime.ParseExact(DateTime.Now.ToShortDateString(), "dd.MM.yyyy.HH.mm.ss", null); But can't quite get exactly what I want. Basically I want to keep the 0, for example time is 05:03:20 PM I don't want it to show like 5:3:20 PM Any ideas?

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  • openDatabase Hello World

    - by cf_PhillipSenn
    I'm trying to learn about openDatabase, and I think this I'm getting it to INSERT INTO TABLE1, but I can't verify that the SELECT * FROM TABLE1 is working. <html> <head> <script src="http://www.google.com/jsapi"></script> <script type="text/javascript"> google.load("jquery", "1"); </script> <script type="text/javascript"> var db; $(function(){ db = openDatabase('HelloWorld'); db.transaction( function(transaction) { transaction.executeSql( 'CREATE TABLE IF NOT EXISTS Table1 ' + ' (TableID INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, ' + ' Field1 TEXT NOT NULL );' ); } ); db.transaction( function(transaction) { transaction.executeSql( 'SELECT * FROM Table1;',function (transaction, result) { for (var i=0; i < result.rows.length; i++) { alert('1'); $('body').append(result.rows.item(i)); } }, errorHandler ); } ); $('form').submit(function() { var xxx = $('#xxx').val(); db.transaction( function(transaction) { transaction.executeSql( 'INSERT INTO Table1 (Field1) VALUES (?);', [xxx], function(){ alert('Saved!'); }, errorHandler ); } ); return false; }); }); function errorHandler(transaction, error) { alert('Oops. Error was '+error.message+' (Code '+error.code+')'); transaction.executeSql('INSERT INTO errors (code, message) VALUES (?, ?);', [error.code, error.message]); return false; } </script> </head> <body> <form method="post"> <input name="xxx" id="xxx" /> <p> <input type="submit" name="OK" /> </p> <a href="http://www.google.com">Cancel</a> </form> </body> </html>

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  • change process windows style

    - by Suriyan Suresh
    I start IE as a process and then i would like to change the following properties of a process. remove title bar, toolbar of a process (if IE) set top,left location and size through c# prevent process from minimizing , i have used the following code but had no luck(find the handle of the process and then pass it to below function) public void SetFormOnDesktop(int hwnd) { int hwndf = hwnd; IntPtr hwndParent = FindWindow("ProgMan", null); SetParent(hwndf, hwndParent); }

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  • How to interpret kernel panics?

    - by Owen
    Hi all, I'm new to linux kernel and could barely understand how to debug kernel panics. I have this error below and I don't know where in the C code should I start checking. I was thinking maybe I could echo what functions are being called so I could check where in the code is this null pointer dereferenced. What print function should I use ? How do you interpret the error message below? Unable to handle kernel NULL pointer dereference at virtual address 0000000d pgd = c7bdc000 [0000000d] *pgd=4785f031, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] PREEMPT Modules linked in: bcm5892_secdom_fw(P) bcm5892_lcd snd_bcm5892 msr bcm5892_sci bcm589x_ohci_p12 bcm5892_skeypad hx_decoder(P) pinnacle hx_memalloc(P) bcm_udc_dwc scsi_mod g_serial sd_mod usb_storage CPU: 0 Tainted: P (2.6.27.39-WR3.0.2ax_standard #1) PC is at __kmalloc+0x70/0xdc LR is at __kmalloc+0x48/0xdc pc : [c0098cc8] lr : [c0098ca0] psr: 20000093 sp : c7a9fd50 ip : c03a4378 fp : c7a9fd7c r10: bf0708b4 r9 : c7a9e000 r8 : 00000040 r7 : bf06d03c r6 : 00000020 r5 : a0000093 r4 : 0000000d r3 : 00000000 r2 : 00000094 r1 : 00000020 r0 : c03a4378 Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user Control: 00c5387d Table: 47bdc008 DAC: 00000015 Process sh (pid: 1088, stack limit = 0xc7a9e260) Stack: (0xc7a9fd50 to 0xc7aa0000) fd40: c7a6a1d0 00000020 c7a9fd7c c7ba8fc0 fd60: 00000040 c7a6a1d0 00000020 c71598c0 c7a9fd9c c7a9fd80 bf06d03c c0098c64 fd80: c71598c0 00000003 c7a6a1d0 bf06c83c c7a9fdbc c7a9fda0 bf06d098 bf06d008 fda0: c7159880 00000000 c7a6a2d8 c7159898 c7a9fde4 c7a9fdc0 bf06d130 bf06d078 fdc0: c79ca000 c7159880 00000000 00000000 c7afbc00 c7a9e000 c7a9fe0c c7a9fde8 fde0: bf06d4b4 bf06d0f0 00000000 c79fd280 00000000 0f700000 c7a9e000 00000241 fe00: c7a9fe3c c7a9fe10 c01c37b4 bf06d300 00000000 c7afbc00 00000000 00000000 fe20: c79cba84 c7463c78 c79fd280 c7473b00 c7a9fe6c c7a9fe40 c00a184c c01c35e4 fe40: 00000000 c7bb0005 c7a9fe64 c79fd280 c7463c78 00000000 c00a1640 c785e380 fe60: c7a9fe94 c7a9fe70 c009c438 c00a164c c79fd280 c7a9fed8 c7a9fed8 00000003 fe80: 00000242 00000000 c7a9feb4 c7a9fe98 c009c614 c009c2a4 00000000 c7a9fed8 fea0: c7a9fed8 00000000 c7a9ff64 c7a9feb8 c00aa6bc c009c5e8 00000242 000001b6 fec0: 000001b6 00000241 00000022 00000000 00000000 c7a9fee0 c785e380 c7473b00 fee0: d8666b0d 00000006 c7bb0005 00000300 00000000 00000000 00000001 40002000 ff00: c7a9ff70 c79b10a0 c79b10a0 00005402 00000003 c78d69c0 ffffff9c 00000242 ff20: 000001b6 c79fd280 c7a9ff64 c7a9ff38 c785e380 c7473b00 00000000 00000241 ff40: 000001b6 ffffff9c 00000003 c7bb0000 c7a9e000 00000000 c7a9ff94 c7a9ff68 ff60: c009c128 c00aa380 4d18b5f0 08000000 00000000 00071214 0007128c 00071214 ff80: 00000005 c0027ee4 c7a9ffa4 c7a9ff98 c009c274 c009c0d8 00000000 c7a9ffa8 ffa0: c0027d40 c009c25c 00071214 0007128c 0007128c 00000241 000001b6 00000000 ffc0: 00071214 0007128c 00071214 00000005 00073580 00000003 000713e0 400010d0 ffe0: 00000001 bef0c7b8 000269cc 4d214fec 60000010 0007128c 00000000 00000000 Backtrace: [] (__kmalloc+0x0/0xdc) from [] (gs_alloc_req+0x40/0x70 [g_serial]) r8:c71598c0 r7:00000020 r6:c7a6a1d0 r5:00000040 r4:c7ba8fc0 [] (gs_alloc_req+0x0/0x70 [g_serial]) from [] (gs_alloc_requests+0x2c/0x78 [g_serial]) r7:bf06c83c r6:c7a6a1d0 r5:00000003 r4:c71598c0 [] (gs_alloc_requests+0x0/0x78 [g_serial]) from [] (gs_start_io+0x4c/0xac [g_serial]) r7:c7159898 r6:c7a6a2d8 r5:00000000 r4:c7159880 [] (gs_start_io+0x0/0xac [g_serial]) from [] (gs_open+0x1c0/0x224 [g_serial]) r9:c7a9e000 r8:c7afbc00 r7:00000000 r6:00000000 r5:c7159880 r4:c79ca000 [] (gs_open+0x0/0x224 [g_serial]) from [] (tty_open+0x1dc/0x314) [] (tty_open+0x0/0x314) from [] (chrdev_open+0x20c/0x22c) [] (chrdev_open+0x0/0x22c) from [] (__dentry_open+0x1a0/0x2b8) r8:c785e380 r7:c00a1640 r6:00000000 r5:c7463c78 r4:c79fd280 [] (__dentry_open+0x0/0x2b8) from [] (nameidata_to_filp+0x38/0x50) [] (nameidata_to_filp+0x0/0x50) from [] (do_filp_open+0x348/0x6f4) r4:00000000 [] (do_filp_open+0x0/0x6f4) from [] (do_sys_open+0x5c/0x170) [] (do_sys_open+0x0/0x170) from [] (sys_open+0x24/0x28) r8:c0027ee4 r7:00000005 r6:00071214 r5:0007128c r4:00071214 [] (sys_open+0x0/0x28) from [] (ret_fast_syscall+0x0/0x2c) Code: e59c4080 e59c8090 e3540000 159c308c (17943103) ---[ end trace be196e7cee3cb1c9 ]--- note: sh[1088] exited with preempt_count 2 process '-/bin/sh' (pid 1088) exited. Scheduling for restart. Welcome to Wind River Linux

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  • stop thread that does not get interrupted

    - by prmatta
    I have a thread that sits and reads objects off of an ObjectInputStream: public void run() { try { ois = new ObjectInputStream(clientSocket.getInputStream()); Object o; while ((o = ois.readObject()) != null) { //do something with object } } catch (Exception ex) { //Log exception } } readObject does not throw InterruptedException and as far as I can tell, no exception is thrown when this thread is interrupted. How do I stop this thread?

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  • j2me bluetooth client. Function startInquiry nothing found.

    - by Hugi
    I develop simple j2me bluetooth client and have problem with bluetooth device search. Function startInquiry nothing found. Client : nokia 5220 Server : my pc with bluetooth adapter All bluetooth devices is on. /* * To change this template, choose Tools | Templates * and open the template in the editor. */ import javax.microedition.midlet.*; import javax.bluetooth.*; import java.util.Vector; import javax.microedition.lcdui.*; /** * @author ????????????? */ public class Midlet extends MIDlet implements DiscoveryListener { private static Vector vecDevices=new Vector(); private static String connectionURL=null; private LocalDevice localDevice; private DiscoveryAgent agent; private RemoteDevice remoteDevice; private RemoteDevice[] devList; private Display display; private Form form; public void startApp() { display = Display.getDisplay(this); form = new Form( "Client" ); try { localDevice = LocalDevice.getLocalDevice(); } catch( BluetoothStateException e ) { e.printStackTrace(); } form.append("Address: "+localDevice.getBluetoothAddress()+"\n\n"); form.append("Name: "+localDevice.getFriendlyName()+"\n\n"); try { agent = localDevice.getLocalDevice().getDiscoveryAgent(); form.append("Starting device inquiry... \n\n"); boolean si = agent.startInquiry(DiscoveryAgent.GIAC, this); if ( si ) { form.append("true"); } else { form.append("false"); } } catch( BluetoothStateException e ) { } int deviceCount = vecDevices.size(); if(deviceCount <= 0){ form.append("No Devices Found ."); } else{ //print bluetooth device addresses and names in the format [ No. address (name) ] form.append("Bluetooth Devices: "); for (int i = 0; i < deviceCount; i++) { remoteDevice=(RemoteDevice)vecDevices.elementAt(i); form.append( remoteDevice.getBluetoothAddress() ); } } display.setCurrent(form); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void deviceDiscovered(RemoteDevice btDevice, DeviceClass cod) { //add the device to the vector if(!vecDevices.contains(btDevice)){ vecDevices.addElement(btDevice); } } public void inquiryCompleted(int discType) { } //implement this method since services are not being discovered public void servicesDiscovered(int transID, ServiceRecord[] servRecord) { if(servRecord!=null && servRecord.length>0){ connectionURL=servRecord[0].getConnectionURL(0,false); } } //implement this method since services are not being discovered public void serviceSearchCompleted(int transID, int respCode) { } }

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  • Nested Usercontrols and ViewState

    - by Bob Smith
    I have a UserControlParent that dynamically loads UserControlChild. In the UserControlChild, I store a value using the ViewState object by doing a ViewState["count"] = myCount; On Postbacks, the ViewState returns a null. Is this because the UserControlChild is being loaded dynamically? If it helps, the UserControlParent is loaded dynamically in the ASPX page as well.

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  • How the jQuery TinyMCE and jQuery RSV get to work?

    - by Trez
    I'm using RSV to validate form element, and tinymce to convert textarea to editor. The textarea is included to be checked by rsv validator using 'required', since the textarea is being converted to tinymce editor. Theres a problem on the validation, even i entered the value in the editor the validator says that textarea is a null. How can i validate the textarea using RSV? any ideas? Thanks in advance.

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  • Necessary rights to be able to add a column with ALTER TABLE ADD column_name

    - by Sorin Comanescu
    Hi, Could somebody point out the necessary rights to do something like ALTER TABLE myTable ADD myColumn int NOT NULL CONSTRAINT [Constraint_name] DEFAULT ((0)) ? I assumed grant alter on myTable to [user] was enough but I'm getting the error message The UPDATE permission was denied on the object 'myTable', database 'x', schema 'dbo'. Could UPDATE rights be needed because of the DEFAULT constraint? Thanks.

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  • How to insert a SQLite record with a datetime set to 'now' in Android application?

    - by droidguy
    Say, we have a table created as: create table notes (_id integer primary key autoincrement, created_date date) To insert a record, I'd use ContentValues initialValues = new ContentValues(); initialValues.put("date_created", ""); long rowId = mDb.insert(DATABASE_TABLE, null, initialValues); But how to set the date_created column to "now"? To make it clear, the initialValues.put("date_created", "datetime('now')"); Is not the right solution. It just sets the column to "datetime('now')" text.

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  • Hiding a LinkButton in DataList

    - by sanfra1983
    Hi someone can tell me how to hide a LinkButton inside a DataList? I've tried to do this but I do not work: protected void Page_PreRender(object sender, EventArgs e) { foreach (var item in listanews) { DataList container = dlgestionenews; if (string.IsNullOrEmpty(item.IdNews)) { DataListItem itemdatalist = null; foreach (DataListItem itemdl in container.Items) { foreach (Control control in itemdatalist.Controls) { if (control.GetType().FullName == "LinkButton") { ((LinkButton)control).Visible = false; } } } } } } Thanks!

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  • Spring's JdbcDaoSupport (using MySQL Connector/J) fails after executing sql that adds FK

    - by John
    I am using Spring's JdbcDaoSupport class with a DriverManagerDataSource using the MySQL Connector/J 5.0 driver (driverClassName=com.mysql.jdbc.driver). allowMultiQueries is set to true in the url. My application is an in-house tool we recently developed that executes sql scripts in a directory one-by-one (allows us to re-create our schema and reference table data for a given date, etc, but I digress). The sql scripts sometime contain multiple statements (hence allowMultiQueries), so one script can create a table, add indexes for that table, etc. The problem happens when including a statement to add a foreign key constraint in one of these files. If I have a file that looks like... --(column/constraint names are examples) CREATE TABLE myTable ( fk1 BIGINT(19) NOT NULL, fk2 BIGINT(19) NOT NULL, PRIMARY KEY (fk1, fk2) ); ALTER TABLE myTable ADD CONSTRAINT myTable_fk1 FOREIGN KEY (fk1) REFERENCES myOtherTable (id) ; ALTER TABLE myTable ADD CONSTRAINT myTable_fk2 FOREIGN KEY (fk2) REFERENCES myOtherOtherTable (id) ; then JdbcTemplate.execute throws an UncategorizedSqlException with the following error message and stack trace: Exception in thread "main" org.springframework.jdbc.UncategorizedSQLException: StatementCallback; uncategorized SQLException for SQL [ THE SQL YOU SEE ABOVE LISTED HERE ]; SQL state [HY000]; error code [1005]; Can't create table 'myDatabase.myTable' (errno: 150); nested exception is java.sql.SQLException: Can't create table 'myDatabase.myTable' (errno: 150) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80) at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80) and the table and foreign keys are not inserted. Also, especially weird: if I take the foreign key statements out of the script I showed above and then place them in their own script that executes after (so I now have 1 script with just the create table statement, and 1 script with the add foreign key statements that executes after that) then what happens is: tool executes create table script, works fine, table is created tool executes add fk script, throws the same exception as seen above (except errno=121 this time), but the FKs actually get added (!!!) In other words, when the create table/FK statements are in the same script then the exception is thrown and nothing is created, but when they are different scripts a nearly identical exception is thrown but both things get created. Any help on this would be greatly appreciated. Please let me know if you'd like me to clarify anything more.

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