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  • Unwanted automated creation of new instances of an activity class

    - by Marko
    I have an activity (called Sender) with the most basic UI, only a button that sends a message when clicked. In the onClickListener I only call this method: private void sendSMS(String msg) { PendingIntent pi = PendingIntent.getActivity(this, 0, new Intent(this, Sender.class), 0); PendingIntent pi = PendingIntent.getActivity(this, 0, myIntent, 0); SmsManager sms = SmsManager.getDefault(); sms.sendTextMessage("1477", null, msg, pi, null); } This works ok, the message is sent but every time a message is sent a new instance of Sender is started on top of the other. If I call sendSMS method three times, three new instances are started. I'm quite new to android so I need some help with this, I only want the same Sender to be on all the time

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  • how to make objects globally accessible?

    - by fayer
    i have this code: class IC_Core { /** * Database * @var IC_Database */ public static $db = NULL; /** * Core * @var IC_Core */ protected static $_instance = NULL; private function __construct() { } public static function getInstance() { if ( ! is_object(self::$_instance)) { self::$_instance = new self(); self::initialize(self::$_instance); } return self::$_instance; } private static function initialize(IC_Core $IC_Core) { self::$db = new IC_Database($IC_Core); } } but when i wanna access IC_Database with: $IC = IC_Core::getInstance(); $IC->db->add() // it says that its not an object. i think the problem lies in self::$db = new IC_Database($IC_Core); but i dont know how to make it work. could someone give me a hand=) thanks!

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  • Search for nodes by name in XmlDocument

    - by RajenK
    I'm trying to find a node by name in an XmlDocument with the following code: private XmlNode FindNode(XmlNodeList list, string nodeName) { if (list.Count > 0) { foreach (XmlNode node in list) { if (node.Name.Equals(nodeName)) return node; if (node.HasChildNodes) FindNode(node.ChildNodes, nodeName); } } return null; } I call the function with: FindNode(xmlDocument.ChildNodes, "somestring"); For some reason it always returns null and I'm not really sure why. Can someone help me out with this?

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  • Passing page control from jscript to pagemethod in the codebehind?

    - by brandonprry
    Hi, I am looking write a javascript method as such called when a dropdownlist changes value function GetStuff(sender, destID){ var dest = document.getElementById(destID); this.PageMethods.GetStuffs(sender, dest, null, null); } GetStuffs() is in the Codebehind as follows: [WebMethod] public static void GetStuffs(object sender, object dest) { DropDownList s = sender as DropDownList; DropDownList d = dest as DropDownList; d.Items.Add(new ListItem(s.SelectedValue)); } I have a break point set at the method and alerts in the GetStuff() jscript method fire up until the PageMethod call, at which nothing happens. I have set OnSuccess and OnFailure methods up with alerts and they don't get fired. Any thoughts? Am I doing something inherently wrong?

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  • How to create following cube?

    - by Itsgkiran
    Hi! For example........... Database Table: BatchID BatchName Chemical Value -------------------------------------------------------- BI-1 BN-1 CH-1 1 BI-2 BN-2 CH-2 2 -------------------------------------------------------- I need to display following cube BI-1 BI-2 BN-1 BN-2 ----------------------------------------- CH-1 1 null ------------------------------------------ CH-2 null 2 ------------------------------------------ Here BI-1,BN-1 are two rows in a single columns i need to display chemical value as row of that. What is query MDX query for this. Could Please help me to solve this problem. Thank You.

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  • hierarchical data from self referencing table in tree form

    - by Beta033
    It looks like this has been asked and answered in all the simple cases, excluding the one that I'm having trouble with. I've tried using a recursive CTE to generate this; however maybe a cursor would be better? Or maybe a set of recursive functions will do the trick? Can this be done in a cte? consider the following table PrimaryKey ParentKey 1 NULL 2 1 3 6 4 7 5 2 6 1 7 NULL should yield PK 1 -2 --5 -6 --3 7 -4 where the number of - marks equal the depth, my primary difficulty is the ordering.

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  • clearTimeout not working as expected

    - by user543314
    Javascript sliding menu stay open. clearTimeout not working as expected -can you help me please <html> <head> <style> #Menu1 {position:absolute; top:-190px; left:150px; font-size:15px;visibility:visible; background-color:#D0BCFE; width:114px;z-index:0;border-style:solid; } #Menu2 {position:absolute; top:-190px; left:580px; font-size:15px;visibility:visible; background-color:#D0BCFE; width:114px;z-index:0;border-style:solid; } #Menu3 {position:absolute; top:-190px; left:1005px; font-size:15px;visibility:visible; background-color:#D0BCFE; width:114px;z-index:0;border-style:solid; } TD.TDHREFMENUS{font-size:20;color:red;position:relative;z-index:0;background-color:#C4ABFE;border-style:solid;width:114px;} </style> <script> var stopUp=null; var stopDown=null; var mov=-143; var on; function down(id){ if (!on){ on=true; clearTimeout(stopUp) stopUp=null; } var obj=document.getElementById(id) obj.style.top=mov +"px"; if (mov <=27){ mov+=2; stopDown=setTimeout(function (){ down(id) }, 20) } } function up(id){ if (on){ on=false; clearTimeout(stopDown) stopDown=null; } var obj=document.getElementById(id) obj.style.top=mov +"px"; if (mov >=-143){ mov-=2; stopUp=setTimeout(function(){ up(id)}, 20); } } </script> </head> <body leftmargin=0 marginwidth=0 topmargin=0 marginheight=0> <div id="Menu1" onmouseover="down('Menu1')" onmouseout="up('Menu1')"> URL 1<br> URL 2<br> URL 3<br> URL 4<br> URL 5<br> URL 6<br> URL 7<br> URL 8<br> </div> </div> <div id="Menu2" onmouseover="down('Menu2')" onmouseout="up('Menu2')"> URL 1<br> URL 2<br> URL 3<br> URL 4<br> URL 5<br> URL 6<br> URL 7<br> URL 8<br> </div> </div> <div id="Menu3" onmouseover="down('Menu3')" onmouseout="up('Menu3')"> URL 1<br> URL 2<br> URL 3<br> URL 4<br> URL 5<br> URL 6<br> URL 7<br> URL 8<br> </div> </div> <TABLE cellSpacing=0 cellPadding=0 BORDER=1 WIDTH=100%> <TBODY> <TR> <TD align=middle CLASS="TDHREFMENUS"><span onmouseover="down('Menu1')" onmouseout="up('Menu1')">MENU 1</span> </TD> <TD align=middle CLASS="TDHREFMENUS"><span onmouseover="down('Menu2')" onmouseout="up('Menu2')">MENU 2</span> </TD> <TD align=middle CLASS="TDHREFMENUS"><span onmouseover="down('Menu3')" onmouseout="up('Menu3')">MENU 3</span> </TD> </TR> </TBODY> </TABLE> <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> <html> <head>

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  • overwriting arguments in t-sql functions

    - by chuck taylor
    I was playing around with some code and realized that it is possible to overwrite the argument to a t-sql function. i.e., create function someFn(@date date) as begin if @date is null set @date = getdate() will set @date to be today's date if the argument was null. This appears only to make any sense if t-sql is treating their arguments as references not values. I realized that I don't actually know what the t-sql rules are for cases like this and was hoping someone could elaborate what is going on here. (I don't ever recall seeing any value vs. reference discussion with respect to t-sql code for that matter actually..)

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  • Explain to me the following VS 2010 Extension Sample code..

    - by ealshabaan
    Coders, I am building a VS 2010 extension and I am experimenting around some of the samples that came with the VS 2010 SDK. One of the sample projects is called TextAdornment. In that project there is a weirdo class that looks like the following: [Export(typeof(IWpfTextViewCreationListener))] [ContentType("text")] [TextViewRole(PredefinedTextViewRoles.Document)] internal sealed class TextAdornment1Factory : IWpfTextViewCreationListener While I was experimenting with this project, I tried to debug the project to see the flow of the program and I noticed that this class gets hit when I first start the debugging. Now my question is the following: what makes this class being the first class to get called when VS starts? In other words, why this class gets active and it runs as of some code instantiate an object of this class type? Here is the only two files in the sample project: TextAdornment1Factory.cs using System.ComponentModel.Composition; using Microsoft.VisualStudio.Text.Editor; using Microsoft.VisualStudio.Utilities; namespace TextAdornment1 { #region Adornment Factory /// /// Establishes an to place the adornment on and exports the /// that instantiates the adornment on the event of a 's creation /// [Export(typeof(IWpfTextViewCreationListener))] [ContentType("text")] [TextViewRole(PredefinedTextViewRoles.Document)] internal sealed class TextAdornment1Factory : IWpfTextViewCreationListener { /// /// Defines the adornment layer for the adornment. This layer is ordered /// after the selection layer in the Z-order /// [Export(typeof(AdornmentLayerDefinition))] [Name("TextAdornment1")] [Order(After = PredefinedAdornmentLayers.Selection, Before = PredefinedAdornmentLayers.Text)] [TextViewRole(PredefinedTextViewRoles.Document)] public AdornmentLayerDefinition editorAdornmentLayer = null; /// <summary> /// Instantiates a TextAdornment1 manager when a textView is created. /// </summary> /// <param name="textView">The <see cref="IWpfTextView"/> upon which the adornment should be placed</param> public void TextViewCreated(IWpfTextView textView) { new TextAdornment1(textView); } } #endregion //Adornment Factory } TextAdornment1.cs using System.Windows; using System.Windows.Controls; using System.Windows.Media; using Microsoft.VisualStudio.Text; using Microsoft.VisualStudio.Text.Editor; using Microsoft.VisualStudio.Text.Formatting; namespace TextAdornment1 { /// ///TextAdornment1 places red boxes behind all the "A"s in the editor window /// public class TextAdornment1 { IAdornmentLayer _layer; IWpfTextView _view; Brush _brush; Pen _pen; ITextView textView; public TextAdornment1(IWpfTextView view) { _view = view; _layer = view.GetAdornmentLayer("TextAdornment1"); textView = view; //Listen to any event that changes the layout (text changes, scrolling, etc) _view.LayoutChanged += OnLayoutChanged; _view.Closed += new System.EventHandler(_view_Closed); //selectedText(); //Create the pen and brush to color the box behind the a's Brush brush = new SolidColorBrush(Color.FromArgb(0x20, 0x00, 0x00, 0xff)); brush.Freeze(); Brush penBrush = new SolidColorBrush(Colors.Red); penBrush.Freeze(); Pen pen = new Pen(penBrush, 0.5); pen.Freeze(); _brush = brush; _pen = pen; } void _view_Closed(object sender, System.EventArgs e) { MessageBox.Show(textView.Selection.IsEmpty.ToString()); } /// <summary> /// On layout change add the adornment to any reformatted lines /// </summary> private void OnLayoutChanged(object sender, TextViewLayoutChangedEventArgs e) { foreach (ITextViewLine line in e.NewOrReformattedLines) { this.CreateVisuals(line); } } private void selectedText() { } /// <summary> /// Within the given line add the scarlet box behind the a /// </summary> private void CreateVisuals(ITextViewLine line) { //grab a reference to the lines in the current TextView IWpfTextViewLineCollection textViewLines = _view.TextViewLines; int start = line.Start; int end = line.End; //Loop through each character, and place a box around any a for (int i = start; (i < end); ++i) { if (_view.TextSnapshot[i] == 'a') { SnapshotSpan span = new SnapshotSpan(_view.TextSnapshot, Span.FromBounds(i, i + 1)); Geometry g = textViewLines.GetMarkerGeometry(span); if (g != null) { GeometryDrawing drawing = new GeometryDrawing(_brush, _pen, g); drawing.Freeze(); DrawingImage drawingImage = new DrawingImage(drawing); drawingImage.Freeze(); Image image = new Image(); image.Source = drawingImage; //Align the image with the top of the bounds of the text geometry Canvas.SetLeft(image, g.Bounds.Left); Canvas.SetTop(image, g.Bounds.Top); _layer.AddAdornment(AdornmentPositioningBehavior.TextRelative, span, null, image, null); } } } } } }

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  • Unit Testing: hard dependency MessageBox.Show()

    - by Sean B
    What ways can the SampleConfirmationDialog be unit tested? The SampleConfirmationDialog would be exercised via acceptance tests, however how could we unit test it, seeing as MessageBox is not abstract and no matching interface? public interface IConfirmationDialog { /// <summary> /// Confirms the dialog with the user /// </summary> /// <returns>True if confirmed, false if not, null if cancelled</returns> bool? Confirm(); } /// <summary> /// Implementation of a confirmation dialog /// </summary> public class SampleConfirmationDialog : IConfirmationDialog { /// <summary> /// Confirms the dialog with the user /// </summary> /// <returns>True if confirmed, false if not, null if cancelled</returns> public bool? Confirm() { return MessageBox.Show("do operation x?", "title", MessageBoxButton.YesNo, MessageBoxImage.Question) == MessageBoxResult.Yes; } }

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  • CSplitterWnd flip between horizonal and vertical splitter?

    - by buttercup
    Hi, Suppose I have a splitter with 2 rows. -------- |        | -------- |        | -------- How do I make it to this --------- |    |    | |    |    | |    |    | --------- switch from horizontal split to vertical split without having to re-create the whole splitter? Code is: if (!m_wndSplitter.CreateStatic(this, 1, 2, WS_CHILD|WS_VISIBLE)) { TRACE0("Failed to create splitter window\n"); return FALSE; } if (!m_wndSplitter.CreateView(0, 1, RUNTIME_CLASS(CWnd), CSize(200, 100), NULL)) { TRACE0("Failed to create CView1\n"); return FALSE; } if (!m_wndSplitter.CreateView(0, 2, RUNTIME_CLASS(CWnd), CSize(500, 100), NULL)) { TRACE0("Failed to create CView2\n"); return FALSE; }

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  • what is serialization and how it works

    - by Rozer
    I know the serialization process but have't implemented it. In my application i have seen there are various classes that has been implemented serilizable interface. consider following class public class DBAccessRequest implements Serializable { private ActiveRequest request = null; private Connection connection = null; private static Log log = LogFactory.getLog(DBAccessRequest.class); public DBAccessRequest(ActiveRequest request,Connection connection) { this.request = request; this.connection = connection; } /** * @return Returns the DB Connection object. */ public Connection getConnection() { return connection; } /** * @return Returns the active request object for the db connection. */ public ActiveRequest getRequest() { return request; } } just setting request and connection in constructor and having getter setter for them. so what is the use of serilizable implementation over here...

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  • Bitmap brightness issue in c++

    - by Suriyan Suresh
    I have used the following code to adjust the image brightness, i am testing this application in Samsung BADA Platform and its SDK, While i am running this application in bada simulator it never ends runs infinity. Please point out the mistake in the code int BitmapWidth = 0, BitmapHeight = 0; result r = E_SUCCESS; BufferInfo myBuffer; Osp::Media::Image *pImage = null; Osp::Graphics::Canvas *pCanvas = null; Osp::Graphics::Rectangle *pRect = null; String path("/Media/Images/tom1.jpg"); pImage = new Osp::Media::Image(); r = pImage->Construct(); pBitmap2 = pImage->DecodeN(path, BITMAP_PIXEL_FORMAT_ARGB8888,LCD_WIDTH, LCD_HEIGHT); BitmapWidth = pBitmap2->GetWidth(); BitmapHeight = pBitmap2->GetHeight(); pBitmap2->Lock( myBuffer); int nVal = 0; int stride = myBuffer.pitch; byte *p= (byte *)(void *)myBuffer.pPixels; int nWidth = BitmapWidth *3; int nOffset = stride - BitmapWidth*4; for (int y = 0; y < BitmapHeight; ++y) { for (int x = 0; x < nWidth; ++x) { nVal = (int) (p[0] + nBrightness); if (nVal < 0) nVal = 0; if (nVal > 255) nVal = 255; p[0] = (byte) nVal; ++p; } p+= nOffset; } pBitmap2->Unlock(); pCanvas = GetCanvasN(); // Step 3: Create Rectangle pRect = new Osp::Graphics::Rectangle(0, 0, LCD_WIDTH, LCD_HEIGHT); r = pCanvas->DrawBitmap(*pRect, *pBitmap2); pCanvas->Show(); RequestRedraw(true); delete pBitmap2; delete pCanvas; delete pRect;

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  • How to store byte[] from Android Camera onPictureTaken method within application for later use

    - by Kiel Wood
    I am writing a larger Android application and I use the camera within the app. All I want to do with the camera is have the user take a picture, then start a new activity to show that image and allow the user to decide if they want to keep the image or not. I am having the hardest time figuring out how to simply store the byte[] data from the onPictureTaken method so that I can display it to the user in the next activity. I have tried many different routes and none of them have worked. The last thing I tried was creating a globalsettings class that extends the Application class and creating a byte[] field within it to store the byte[] from the camera so that I could use it within another activity, but my global variable is still not getting set. My CameraActivity code is shown below: public class CameraActivity extends Activity { CameraPreview Preview; Intent intent; byte[] image; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.cameralayout); Preview = new CameraPreview(this); ((FrameLayout)findViewById(R.id.uxfmlayPreview)).addView(Preview); intent = new Intent(this, PostCaptureActivity.class); } public void uxbtnCaptureSnap_Click(View v) { Preview.DeviceCamera.setPreviewCallback(null); Preview.DeviceCamera.takePicture(shutterCallback, rawCallback, jpegCallback); startActivity(intent); finish(); } public void uxbtnCaptureExit_Click(View v) { Intent i = new Intent(this, ExploreMenuActivity.class); setResult(RESULT_OK); startActivity(i); finish(); } ShutterCallback shutterCallback = new ShutterCallback() { public void onShutter() {} }; PictureCallback rawCallback = new PictureCallback() { public void onPictureTaken(byte[] data, Camera camera) {} }; PictureCallback jpegCallback = new PictureCallback() { public void onPictureTaken(byte[] data, Camera camera) { ((GlobalSettings)getApplication()).setGlobalImage(data); camera.release(); camera = null; } }; } Here is my code from my PostCaptureActivity onCreate() method where I attempt to convert and set the image as the source for an imageview: public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.postcapturelayout); SnapShot = ((ImageView)findViewById(R.id.uximgSnapshot)); if(((GlobalSettings)this.getApplication()).getGlobalImage() != null) { Bitmap b = BitmapFactory.decodeByteArray(((GlobalSettings)this.getApplication()).getGlobalImage(), 0, ((GlobalSettings)this.getApplication()).getGlobalImage().length); SnapShot.setImageBitmap(b); } else { Toast.makeText(this, "Oops! Picture cannot be saved", Toast.LENGTH_SHORT).show(); } }

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  • Is there some way to assume @Nullable as default? (using FindBugs or any other free tool).

    - by alex2k8
    Consider such code public void m1(String text) { if(text == null) text = "<empty>"; System.out.println(text.toLowerCase()); } And this is a buggy version: public void m1(String text) { System.out.println(text.toLowerCase()); } If null value passed, the NullPointerException may be thrown. I would like the static-analysis tool (e.g. FindBugs) to report this issue. Unsuccessfully the FindBugs (at least by default) requires me to specify @Nullable annotation explicitly. public void m1(@Nullable String text) { System.out.println(text.toLowerCase()); // FindBugs: text must be nonnull but is marked as nullable } The problem is that if I forget to annotate it, the bug will be missed!!! How can I make the FindBugs (or any other free tool) to assume @Nullable by default?

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  • C# logic order and compiler behavior

    - by Terrapin
    In C#, (and feel free to answer for other languages), what order does the runtime evaluate a logic statement? Example: DataTable myDt = new DataTable(); if (myDt != null && myDt.Rows.Count > 0) { //do some stuff with myDt } Which statement does the runtime evaluate first - myDt != null or: myDt.Rows.Count > 0 ? Is there a time when the compiler would ever evaluate the statement backwards? Perhaps when an "OR" operator is involved?

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  • EJB3.1 logout doesn't work

    - by Kevin
    Hello, I've got a problem with the authentication features of EJB3.1: With this code in a Servlet v3: log.info(""+request.getUserPrincipal()); log.info(""+request.getAuthType()); log.info("===^==="); request.logout() ; log.info(""+request.getUserPrincipal()); log.info(""+request.getAuthType()); request.authenticate(response) ; log.info("===v==="); log.info(""+request.getUserPrincipal()); log.info(""+request.getAuthType()); I would always expect to see the Username/login windows, because of the logout() function. Instead, it seems to be a 'cache' mechanism which repopulate the credential and cancel my logout ... Admin BASIC ===^=== null null ===v=== Admin BASIC is it a problem with my firefox, or something I'm missing in the Servlet code? Thanks

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  • How can I obtain the IP address of my server program?

    - by Dr Dork
    Hello! This question is related to another question I just posted. I'm prepping for a simple work project and am trying to familiarize myself with the basics of socket programming in a Unix dev environment. At this point, I have some basic server side code and client side code setup to communicate. Currently, my client code successfully connects to the server code and the server code sends it a test message, then both quit out. Perfect! That's exactly what I wanted to accomplish. Now I'm playing around with the functions used to obtain info about the two environments (server and client). I'd like to obtain my server program's IP address. Here's the code I currently have to do this, but it's not working... int sockfd; unsigned int len; socklen_t sin_size; char msg[]="test message"; char buf[MAXLEN]; int st, rv; struct addrinfo hints, *serverinfo, *p; struct sockaddr_storage client; char s[INET6_ADDRSTRLEN]; char ip[INET6_ADDRSTRLEN]; //zero struct memset(&hints,0,sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_PASSIVE; //get the server info if((rv = getaddrinfo(NULL, SERVERPORT, &hints, &serverinfo ) != 0)){ perror("getaddrinfo"); exit(-1); } // loop through all the results and bind to the first we can for( p = serverinfo; p != NULL; p = p->ai_next) { //Setup the socket if( (sockfd = socket( p->ai_family, p->ai_socktype, p->ai_protocol )) == -1 ) { perror("socket"); continue; } //Associate a socket id with an address to which other processes can connect if(bind(sockfd, p->ai_addr, p->ai_addrlen) == -1){ close(sockfd); perror("bind"); continue; } break; } if( p == NULL ){ perror("Fail to bind"); } inet_ntop(p->ai_family, get_in_addr((struct sockaddr *)p->ai_addr), s, sizeof(s)); printf("Server has TCP Port %s and IP Address %s\n", SERVERPORT, s); and the output for the IP is always empty... server has TCP Port 21412 and IP Address :: any ideas for what I'm missing? thanks in advance for your help! this stuff is really complicated at first.

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  • Criticise/Recommendations for my code

    - by aLk
    Before i go any further it would be nice to know if there is any major design flaws in my program so far. Is there anything worth changing before i continue? Model package model; import java.sql.*; import java.util.*; public class MovieDatabase { @SuppressWarnings({ "rawtypes", "unchecked" }) public List queryMovies() throws SQLException { Connection connection = null; java.sql.Statement statement = null; ResultSet rs = null; List results = new ArrayList(); try { DriverManager.registerDriver(new com.mysql.jdbc.Driver()); connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "password"); statement = connection.createStatement(); String query = "SELECT * FROM movie"; rs = statement.executeQuery(query); while(rs.next()) { MovieBean bean = new MovieBean(); bean.setMovieId(rs.getInt(1)); bean.setTitle(rs.getString(2)); bean.setYear(rs.getInt(3)); bean.setRating(rs.getInt(4)); results.add(bean); } } catch(SQLException e) { } return results; } } Servlet public class Service extends HttpServlet { @SuppressWarnings("rawtypes") protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println("Movies!"); MovieDatabase movies = new MovieDatabase(); try { List results = movies.queryMovies(); Iterator it = results.iterator(); while(it.hasNext()) { MovieBean movie = new MovieBean(); movie = (MovieBean)it.next(); out.println(movie.getYear()); } } catch(SQLException e) { } } } Bean package model; @SuppressWarnings("serial") public class MovieBean implements java.io.Serializable { protected int movieid; protected int rating; protected int year; protected String title; public MovieBean() { } public void setMovieId(int movieidVal) { movieid = movieidVal; } public void setRating(int ratingVal) { rating = ratingVal; } public void setYear(int yearVal) { year = yearVal; } public void setTitle(String titleVal) { title = titleVal; } public int getMovieId() { return movieid; } public int getRating() { return rating; } public int getYear() { return year; } public String getTitle() { return title; } }

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  • INSERT SQL in Java

    - by Pierre
    Hello. I have a Java application and I want to use SQL database. I have a class for my connection : public class SQLConnection{ private static String url = "jdbc:postgresql://localhost:5432/table"; private static String user = "postgres"; private static String passwd = "toto"; private static Connection connect; public static Connection getInstance(){ if(connect == null){ try { connect = DriverManager.getConnection(url, user, passwd); } catch (SQLException e) { JOptionPane.showMessageDialog(null, e.getMessage(), "Connection Error", JOptionPane.ERROR_MESSAGE); } } return connect; } } And now, in another class I succeeded to print my values but when I attempt to insert a value nothing is happening ... Here's my code : try { Statement state = SQLConnection.getInstance().createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY); Statement state2 = SQLConnection.getInstance().createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE); state2.executeUpdate("INSERT INTO table(field1) VALUES (\"Value\")"); // Here's my problem ResultSet res = state.executeQuery("SELECT * FROM plateau");

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  • getting usb com port

    - by I__
    i have this function: private string GetUSBComPort() { string[] sPorts = SerialPort.GetPortNames(); foreach (string port in sPorts) { if (port != "COM1" && port != "COM4") { return port; } } return null; } this function is being called from form load: private void Form1_Load(object sender, EventArgs e) { serialPort1 = new SerialPort(GetUSBComPort()); if (serialPort1.IsOpen) { serialPort1.Close(); } serialPort1.Open(); //ThreadStart myThreadDelegate = new ThreadStart(ReceiveAndOutput); //Thread myThread = new Thread(myThreadDelegate); //myThread.Start(); this.serialPort1.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived); } the function is unfortunately returning null how do i get the com port to which my phone is attached to via USB?

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  • Hibernate Many-To-One Foreign Key Default 0

    - by user573648
    I have a table where the the parent object has an optional many-to-one relationship. The problem is that the table is setup to default the fkey column to 0. When selecting, using fetch="join", etc-- the default of 0 on the fkey is being used to try over and over to select from another table for the ID 0. Of course this doesn't exist, but how can I tell Hibernate to treat a value of 0 to be the same as NULL-- to not cycle through 20+ times in fetching a relationship which doesn't exist? <many-to-one name="device" lazy="false" class="Device" not-null="true" access="field" cascade="none" not-found="ignore"> <column name="DEVICEID" default="0" not-null="false"/>

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  • 1) PasswordResets emails user when requesting password reset

    - by Surge Pedroza
    I've been trying to add a password reset for users that forget their password. The users clicks on forgot password? on sign up page. Then the user types their email and clicks reset password, which creates a token and sends an email with a link to reset their password. For the most part, it was working well, and then it suddenly stopped working. When a user clicks password reset, it brings up the error message: Password cant be blank, password is too short(6 min) Ran into this error in video 275 How I Test. on 11:20 Failure/Error: click_button "Reset Password" ActiveRecord::RecordInvalid: Validation failed: Password can't be blank, Password is too short (minimum is 6 characters), Password confirmation can't be blank # ./app/models/user.rb:30:in send_password_reset' # ./app/controllers/password_resets_controller.rb:7:increate' # (eval):2:in click_button' # ./spec/requests/password_resets_spec.rb:9:inblock (2 levels) in ' Finished in 13.66 seconds 95 examples, 1 failure This is some of the code being used. user.rb # == Schema Information # # Table name: users # # id :integer not null, primary key # name :string(255) # email :string(255) # created_at :datetime not null # updated_at :datetime not null # class User < ActiveRecord::Base attr_accessible :name, :email, :password, :password_confirmation has_secure_password before_save { |user| user.email = email.downcase } before_save :create_remember_token validates :name, presence: true, length: { maximum: 50 } VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i validates :email, presence: true, format: { with: VALID_EMAIL_REGEX }, uniqueness: { case_sensitive: false } validates :password, presence: true, length: { minimum: 6 } validates :password_confirmation, presence: true def send_password_reset generate_token(:password_reset_token) self.password_reset_sent_at = Time.zone.now save! UserMailer.password_reset(self).deliver end def generate_token(column) begin self[column] = SecureRandom.urlsafe_base64 end while User.exists?(column => self[column]) end def self.search(search) if search find(:all, :conditions => ['name LIKE ?', "%#{search}%"]) else find(:all) end end private def create_remember_token self.remember_token = SecureRandom.urlsafe_base64 end end password_resets_controller.rb class PasswordResetsController < ApplicationController def new end def create user = User.find_by_email(params[:email]) user.send_password_reset redirect_to root_url, :notice => "Email sent with password reset instructions." end def edit @user = User.find_by_password_reset_token!(params[:id]) end end new.html.erb <h1>Reset Password</h1> <%= form_tag password_resets_path, :method => :post do %> <div class="field"> <%= label_tag :email %> <%= text_field_tag :email, params[:email] %> </div> <div class="actions"><%= submit_tag "Reset Password" %></div> <% end %>

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  • strstr whole string match

    - by clay
    I'm trying to match the whole string and not just part of it. For instance, if the needle is 2, I would like to match just the string 2 and not 20, 02, or 22 or anything related. I'm using strstr as: #include <stdio.h> #include <string.h> int main(int argc, char *argv[]) { FILE *file; char l[BUFSIZ]; int linenumber = 1; char term[6] = "2"; file = fopen(argv[1], "r"); if(file != NULL) { while(fgets(l, sizeof(l), file)){ if(strstr(l, term) != NULL) { printf("Search Term Found at %d!\n", linenumber); } ++linenumber; } } else { perror(argv[1]); } fclose(file); return 0; }

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  • Programatically determining file "size on disk" in advance

    - by porkchop
    I need to know how big a given in-memory buffer will be as an on-disk (usb stick) file before I write it. I know that unless the size falls on the block size boundary, its likely to get rounded up, e.g. a 1 byte file takes up 4096 bytes on-disk. I'm currently doing this using GetDiskFreeSpace() to work out the disk block size, then using this to calculate the on-disk size like this: GetDiskFreeSpace(szDrive, &dwSectorsPerCluster, &dwBytesPerSector, NULL, NULL); dwBlockSize = dwSectorsPerCuster * dwBytesPerSector; if (dwInMemorySize % dwBlockSize != 0) { dwSizeOnDisk = ((dwInMemorySize / dwBlockSize) * dwBlockSize) + dwBlockSize; } else { dwSizeOnDisk = dwInMemorySize; } Which seems to work fine, BUT GetDiskFreeSpace() only works on disks up to 2GB according to MSDN. GetDiskFreeSpaceEx() doesn't return the same information, so my question is, how else can I calculate this information for drives 2GB? Is there an API call I've missed? Can I assume some hard values depending on the overall disk size?

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