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  • plpgsql function to generate random readable strings

    - by Peter
    Hi I have written the following function but it's isn't returning anything when I run it. Can somebody help identify the issue? CREATE OR REPLACE FUNCTION GenerateReadableRandomString ( len INT ) RETURNS varchar AS $$ DECLARE validchars VARCHAR; randomstr VARCHAR; randint INT; i INT; BEGIN validchars := 'ABCEFHJKLMNPRTWXY3478'; i := 0; LOOP randint := ceil(random() * char_length(validchars)); randomstr := randomstr || substring(validchars from randint for 1); i := i + 1; EXIT WHEN i = len; END LOOP; RETURN randomstr; END; $$ LANGUAGE plpgsql;

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  • C#: Object reference not set to an instance of an object.

    - by Vinzcent
    Hey, I get the following error: Object reference not set to an instance of an object This is my C Sharp code: DataTable tableAcces = dsAcces.Tables["dsPrinterAcces"]; DataTable tableMDF = dsAcces.Tables["dsPrinterMDF"]; DataRow newrow = null; foreach(DataRow dr in tableAcces.Rows) { newrow = tableMDF.NewRow(); newrow["PRINTER_ID"] = dr["PRINTER_ID"]; newrow["MERK"] = dr["MERK"]; newrow["MODEL"] = dr["MODEL"]; newrow["LOKAAL_ID"] = dr["LOKAAL_ID"]; tableMDF.Rows.Add(newrow); } daMDF.Update(dsMDF, "dsPrinterMDF"); lblSucces.Text = "Gelukt. De tabel printers is overgezet."; } In this line, he throws the error: newrow = tableMDF.NewRow(); Thanks a lot, Vincent

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  • Deserialization of JSON object by using DataContractJsonSerializer in C#

    - by user2539667
    enter code hereI'm sure this question has been asked over and over again, but for some reason, I still can't manage to get this to work. I want to deserialize a JSON object that contains a single member; a string array: [{"idTercero":"cod_Tercero"}] This is the class that I'm trying to deserialize into: [DataContract] public class rptaOk { [DataMember] public string idTercero { get; set; } public rptaOk() { } public rptaOk(string idTercero) { this.idTercero = idTercero; } } This is the method that I try to deserialize: public T Deserialise<T>(string json) { DataContractJsonSerializer deserializer = new DataContractJsonSerializer(typeof(T)); using (MemoryStream stream = new MemoryStream(Encoding.Unicode.GetBytes(json))) { T result = (T)deserializer.ReadObject(stream); return result; } } And so try to fill the object: rptaOk deserializedRpta = deserializarOk(rpta); But for some reason, this returns "" MessageBox.Show(deserializedRpta.idTercero);

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  • LD_LIBRARY_PATH : how to find a shared object

    - by CuriousDawg
    I have a shared object ( libxyz.so ). Given LD_LIBRARY_PATH, how can find the exact location of this shared object? If i had a binary that depends on this lib, i would have used ldd on that. Here is the reason why i ask: I have a cgi script which works when using LD_LIBRARY_PATH set to say VALUE1. It does not work when the path is set to VALUE2. I would like to find the exact location of the library as specified by the path in VALUE1 ( Note that VALUE1 has almost 20+ different locations ) Platform: Linux

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  • Combining a one-to-one relationship into one object in Fluent NHibernate

    - by Mike C.
    I have a one-to-one relationship in my database, and I'd like to just combine that into one object in Fluent NHibernate. The specific tables I am talking about are the aspnet_Users and aspnet_Membership tables from the default ASP.NET Membership implementation. I'd like to combine those into one simple User object and only get the fields I want. I would also like to make this read-only, as I want to use the built-in ASP.NET Membership API to modify. I simply want to take advantage of lazy-loading. Any help would be appreciated. Thanks!

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  • No "Terminal Services" branch in "Group Policy Object Editor"

    - by ayavilevich
    Hi, We have several identical several servers in a hosting company. They run Windows 2003 R2 Std SP2 64bit. The servers are not in a domain. We have recently received a new server with the same configuration and hardware. However, the new server is different in some way. When we run "gpedit.msc /s" there are much less options in the tree than the other servers. Specifically we are missing the configuration of "Terminal Services". Many other items are missing under "Administrative templates" and "Windows components". Screenshot of correct server: (can't post link due to SF policy) Screenshot of new server: http://img686.imageshack.us/img686/572/gpowindowscomponentstp5.png What should we try? Thanks, Arik.

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  • XElement Add function adds xmlns="" to the XElement

    - by JJoos
    I have a function which generates xml for a list object: public XDocument ToXML() { foreach (var row in this) { var xml = row.ToXml(); template.Root.Add(xml); } return template; } The template.ToString() reads: <RootElement xmlns="urn:testTools"> The xml reads: <Example><SubElement>testData</SubElement></Example> After the add function has executed the template.ToString() reads: <RootElement xmlns="urn:testTools"><Example xmlns=""><SubElement>testData</SubElement></Example> So for some reason there was an empty namespace added, how can i prevent it from doing so?

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  • Modify an object without using it as parameter

    - by Claire Huang
    I have a global object "X" and a class "A". I need a function F in A which have the ability to modify the content of X. For some reason, X cannot be a data member of A (but A can contain some member Y as reference of X), and also, F cannot have any parameter, so I cannot pass X as an parameter into F. (Here A is an dialog and F is a slot without any parameter, such as accept() ) How can I modify X within F if I cannot pass X into it? Is there any way to let A know that "X" is the object it need to modify?? I try to add something such as SetItem to specify X in A, but failed.

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  • 'ttest' function not working in Matlab

    - by Harpreet
    When I am using this statement in Matlab in my computer then its giving error as follow: [h,p,ci]=ttest(randn(100,1),0.1) Error: ??? Error using ==> nanmean Too many input arguments. Error in ==> ttest at 104 xmean = nanmean(x,dim); However if I use the same statement in Matlab in another computer, then its working fine and giving results. Do you know what could be the problem? I am posting this question here suspecting it to be some software problem with Matlab. Correct me if I am wrong.

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  • Get the string representation of a jquery DOM object's entire HTML

    - by Scozzard
    Hi, I have had a bit of a look around and am having some difficulty solving a wee issue I am having. I basically have a string of HTML, I convert that to a JQuery DOM object so that I can easily remove all elements that have a certain class using JQuery's .remove(). I.e., var radHtml = editor.get_html(); var jqDom = $(radHtml); $(".thickbox", jqDom).remove(); $(".thickboxcontent", jqDom).remove(); editor.set_html(this.innerHTML); NOTE: The HTML is derived from content in a RADEditor text editor so there are no parent HTML tags, so can look as follows: <p>This is a header</p> <p>this is some content followed by a table </p> <a href="#TB_inline?height=350&amp;width=400&amp;inlineId=myOnPageContent0" class="thickbox">Test Thickbox</a> <div id="myOnPageContent0" class="thickboxcontent"> <table class="modal"> <thead> </thead> <tbody> <tr> <td>item</td> <td>result</td> </tr> <tr> <td>item 1</td> <td>1</td> </tr> <tr> <td>item 2</td> <td>2</td> </tr> <tr> <td>item 3</td> <td>3</td> </tr> </tbody> </table> </div> Here is what the jqDom.html() returns from the HTML above: "This is a header" I was wondering if there was an easy way to do this - have some html and remove all elements (in this case divs) that have a certain class (but leaving their contents). JQuery doesnt have to used, but I would like to. Manipulating the DOM object is fine - it is getting the full DOM object in its entirety as a string that I am having the problem with. Any help would be much appreicated. Thanks.

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  • Server 2003 crashing intermittently, want to transfer function to other DC

    - by user1305332
    I have a Win2003R2 server that is intermittently crashing after some virus were introduced. I'm sure all virus have been cleaned thanks to Malwarebytes (were using McAfee - useless). When it crashes you can't login (local or remote) but can still access files remotely and ping it. After a while even file sharing stops and have to kill power to restart it (no BSOD) I need to either fix it (tried to reinstall SP2 and I tried to reinstall windows in repair mode but the repair option was not available when I booted from installation disks) or move it's functionality to another DC (another 2003R2 server). The server that's crashing is old with SCSI drives while the new server uses SATA drives and faster so it seems like a good idea to just transfer roles and ditch the old box. Finding replacement SCSI drives looks expensive if they ever fail. What would I need to transfer roles. If I just move the 5 FSMO roles and copy over the file shares. Would the new server have enough to run without the old server? Never done something like this, just want some tips. Thanks.

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  • Only send populated object properties over WCF?

    - by dlanod
    I have an object that is being sent across WCF that is essentially a property holder - it can potentially have a large number of properties, i.e. up to 100, but in general only a small subset will be set, up to 10 for instance. Example: [DataContract(Namespace = "...")] public class Monkey { [DataMember] public string Arms { get; set; } [DataMember] public string Legs { get; set; } [DataMember] public string Heads { get; set; } [DataMember] public string Feet { get; set; } [DataMember] public string Bodies { get; set; } /* repeat another X times */ } Is there a way to tell WCF to only send the populated properties over the wire? It seems like a potential waste of bandwidth to send over the full object.

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  • Concrete Types or Interfaces for return types?

    - by SDReyes
    Today I came to a fundamental paradox of the object programming style, concrete types or interfaces. Whats the better election for a method's return type: a concrete type or an interface? In most cases, I tend to use concrete types as the return type for methods. because I believe that an concrete type is more flexible for further use and exposes more functionality. The dark side of this: Coupling. The angelic one: A concrete type contains per-se the interface you would going to return initially, and extra functionality. What's your thumb's rule? Is there any programming principle for this? BONUS: This is an example of what I mean http://stackoverflow.com/questions/491375/readonlycollection-or-ienumerable-for-exposing-member-collections

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  • B64 String Being Stripped From HttpService JSON Object Flex 4.0

    - by user163757
    I am trying to decode some b64 images obtained from a web service in my Flex application. The response of this web service is a basic JSON object, with a property (B64Image) that contains the encoded string. The service works fine from my regular browser, however the b64 string gets stripped. So the object the result handler gets has a null value for B64Image. Anyone see something wrong here? EXPECTED OUTPUT { "PropertyPhotos": [ { "B64Image": "/9j/4AAQSkZJRgABAQEAYABgAAD....etc" } ] } <s:HTTPService id="photoService" url="http://localhost/dev/photohandler.ashx" resultFormat="text" result="photoService_resultHandler(event)" fault="photoService_faultHandler(event)"> </s:HTTPService>

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  • Jquery runtime error: object expected

    - by Joris
    The Jquery script that controls my tabcontainer gives an "object expected" runtime error. I honestly can't find the reason why: $(document).ready(function() { //When page loads... $(".tab_content").hide(); //Hide all content $("ul.tabs li:first").addClass("active").show(); //Activate first tab $(".tab_content:first").show(); //Show first tab content //On Click Event $("ul.tabs li").click(function() { $("ul.tabs li").removeClass("active"); //Remove any "active" class $(this).addClass("active"); //Add "active" class to selected tab $(".tab_content").hide(); //Hide all tab content var activeTab = $(this).find("a").attr("href"); //Find the href attribute value to identify the active tab + content $(activeTab).fadeIn(); //Fade in the active ID content return false; }); }); Has it something to do with the stylesheet?

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  • A PHP design pattern for the model part [PHP Zend Framework]

    - by Matthieu
    I have a PHP MVC application using Zend Framework. As presented in the quickstart, I use 3 layers for the model part : Model (business logic) Data mapper Table data gateway (or data access object, i.e. one class per SQL table) The model is UML designed and totally independent of the DB. My problem is : I can't have multiple instances of the same "instance/record". For example : if I get, for example, the user "Chuck Norris" with id=5, this will create a new model instance wich members will be filled by the data mapper (the data mapper query the table data gateway that query the DB). Then, if I change the name to "Duck Norras", don't save it in DB right away, and re-load the same user in another variable, I have "synchronisation" problems... (different instances for the same "record") Right now, I use the Multiton pattern : like Singleton, but multiple instances indexed by a key (wich is the user ID in our example). But this is complicating my developpement a lot, and my testings too. How to do it right ?

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  • printarea function not working

    - by daljeet
    I am trying to print a particular area on my webpage by using jQuery printarea() function. It doesn't work and returns an error. Error return (media.toLowerCase() == "" || media.toLowerCase() == "print") jQuery function printDiv() { $('#dvTokenArea').printArea(); }? <div id="dvTokenArea" runat="server"> <asp:Label ID="lblTokenNumber" runat="server" Text="Print ME !!!!!!!!!!!!"> </asp:Label> </div> <asp:Button ID="btnPrintToken" runat="server" Text="Print" OnClientClick="javascript:printDiv();" />

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  • Playing dynamically embedded sound object via Javascript

    - by Vikram Goyal
    I need to background load some WAV files for an HTML page using AJAX. I use AJAX to get the details of the WAV files, then use the embed tag, and I can confirm that the files have loaded successfully because when I set autostart to true, the files play. However, I need the files to play only when the user clicks on a button (or an event is fired). The following is my code to preload these files: function preloadMedia() { for(var i = 0; i < testQuestions.length; i++) { var soundEmbed = document.createElement("embed"); soundEmbed.setAttribute("src", "/media/sounds/" + testQuestions[i].mediaFile); soundEmbed.setAttribute("hidden", true); soundEmbed.setAttribute("id", testQuestions[i].id); soundEmbed.setAttribute("autostart", false); soundEmbed.setAttribute("width", 0); soundEmbed.setAttribute("height", 0); soundEmbed.setAttribute("enablejavascript", true); document.body.appendChild((soundEmbed)); } } I use the following code to play the file (based on what sound file that user wants to play) function soundPlay(which) { var sounder = document.getElementById(which); sounder.Play(); } Something is wrong here, as none of the browsers I have tested on play the files using the code above. There are no errors, and the code just returns. I would have left it at that (that is - I would have convinced the client to convert all WAV's to MP3 and use MooTools). But I realized that I could play the sound files, which were not dynamically embeded. Thus, the same soundPlay function would work for a file embeded in the following manner: <embed src="/media/sounds/hug_sw1.wav" id="sound2" width="0" heigh="0" autostart="false" enablejavascript="true"/> anywhere within the HTML. And it plays well in all the browsers. Anyone have a clue on this? Is this some sort of undocumented security restriction in all the browsers? (Please remember that the files do get preloaded dynamically, as I can confirm by setting the autostart property to true - They all play). Any help appreciated.

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  • PHP Unlink function Woes on Windows

    - by Abs
    Hello all, I am having problems with the PHP function unlink. I keep getting this error: Warning: unlink(C:\wamp\www\webs\db\db_1276259188.mdb) [function.unlink]: Permission denied in C:\wamp\www\webs\pure-php-export.php on line 242 I am on a windows machine where Apache runs as the user SYSTEM. I have set the permissions of the db folder as "Full Control" for Apache's user. I thought my script might still be holding on to that file (its an uploaded file that gets used via PDO). try{ $dbh = new PDO("odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};Dbq=$mdbFilename", $username, $password); }catch(PDOException $e){ echo $e->getMessage(); } So before I attempt to delete the file I unset the above and try to delete like so: $dbh = null; unset($dbh); if(is_file($mdbFilename)){ unlink($mdbFilename); } I really appreciate any help on this as it has been driving me mental for the past two hours! Thanks all for any help.

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  • Ruby Programming Techniques: simple yet not so simple object manipulation

    - by Shyam
    Hi, I want to create an object, let's say a Pie. class Pie def initialize(name, flavor) @name = name @flavor = flavor end end But a Pie can be divided in 8 pieces, a half or just a whole Pie. For the sake of argument, I would like to know how I could give each Pie object a price per 1/8, 1/4 or per whole. I could do this by doing: class Pie def initialize(name, flavor, price_all, price_half, price_piece) @name = name @flavor = flavor @price_all = price_all @price_half = price_half @price_piece = price_piece end end But now, if I would create fifteen Pie objects, and I would take out randomly some pieces somewhere by using a method such as getPieceOfPie(pie_name) How would I be able to generate the value of all the available pies that are whole and the remaining pieces? Eventually using a method such as: myCurrentInventoryHas(pie_name) # output: 2 whole strawberry pies and 7 pieces. I know, I am a Ruby nuby. Thank you for your answers, comments and help!

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  • Break nested loop in Django views.py with a function

    - by knuckfubuck
    I have a nested loop that I would like to break out of. After searching this site it seems the best practice is to put the nested loop into a function and use return to break out of it. Is it acceptable to have functions inside the views.py file that are not a view? What is the best practice for the location of this function? Here's the example code from inside my views.py @login_required def save_bookmark(request): if request.method == 'POST': form = BookmarkSaveForm(request.POST) if form.is_valid(): bookmark_list = Bookmark.objects.all() for bookmark in bookmark_list: for link in bookmark.link_set.all(): if link.url == form.cleaned_data['url']: # Do something. break else: # Do something else. else: form = BookmarkSaveForm() return render_to_response('save_bookmark_form.html', {'form': form})

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  • UITableView programatically create delegate object?

    - by fuzzygoat
    I have a question regarding setting up a custom delegate class for use with UITableView. What I have done is as follows: Setup a new class (in sperate *.h and *.m files for the class) Conformed that new class to the <UITableViewDelegate, UITableViewDataSource> protocols Added the required methods. Created a pointer to the new object using @property and IBOutlet. In InterfaceBuilder created and assigned an object template to my new class Assigned the dataSource and delegate connections. This all works fine. My question is if I don't want to use interfaceBuilder to setup and instantiate my new delegate class directly in Xcode how do I go about doing that? More specifically how would I: Instantiate the delegate class, would that be created / owned by the controller? Set the dataSource and delegate connections? What is the best way of doing this? any help / information is much appreciated. Gary

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