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  • directoryperdb issue

    - by Rich Blumer
    I installed MongoDB to run as a Windows Service on Win 7 and everything runs well. However, when I attempt to use the command --directoryperdb, it does not recognize this command. Does anyone know how to resolve this issue?

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  • JPA and PostqreSQL: long string persistence

    - by emanemos
    Can anybody tell me how to persist long text using JPA (I use PostgreSQL)? Here's the way I defined a very long string in my class: @Lob private String body; However, this produces a field of type charactervarying(255) in the database. Furthermore, I've tried to use @Column annotation: @Column(columnDefinition="TEXT") private String body; But everything in vain. I would be gratefull for a helpfull comment on this problem.

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  • Why does Int32.MaxValue * Int32.MaxValue == 1 ???

    - by Greg Balajewicz
    OK, I know, Int32.MaxValue * Int32.MaxValue will yield a number larger than Int32 BUT, shouldn't this statement raise some kind of an exception? I ran across this when doing something like IF (X * Y Z) where all are Int32. in X and Y are sufficiently large enough, you get a bogus value from X*Y Why is this so and how to get around this? besides casting everything to int64

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  • binding a usercontrol to the opposite of a bool property

    - by SnOrfus
    Pretty straightforward: I'm looking to do the same as this but in winforms. Everything that google seems to pull up is wpf specific (ie. I don't want to reference presentationframework.dll) Explained if you don't want to read the link: The following is a representation of the intent of what I'd like to do, though it obviously doesn't work. CheckBox1.DataBindings.Add(new Binding("Checked", this.object, "!SomeBool"));

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  • SQL table relationship not showing up in visual studio

    - by PFranchise
    Hey, I made several tables and relationships using SQL server manager. I then imported them to visual studio and it all appeared in the correct form, except one of the relationships did not appear. I have checked everything I could think of and it is the exact same as the other relationships. If you know anything I can check, I would appreciate it. Thanks I am using the entity framework, visual studio 2010.

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  • Scroll to bottom of div?

    - by dMix
    I am creating an ajax chat in rails and I am trying to get a div to scroll to the bottom without much luck. I am wrapping everything in this div: #scroll { height:400px; overflow:scroll; } Is there a way to keep it scrolled to the bottom by default using JS? is there a way to keep it scrolled to the bottom after an ajax request?

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  • Share ASP.Net membership info between two applications

    - by bill
    Hi All, I have an existing webapp and i'm attempting to setup BlogEngine .Net to share the membership tables Everything seems to work.. accept i can see that the Membership.ValidateUser call in blogengine returns false! While the other apps returns true. I'm at a loss.. Membership.GetUser called from both apps returns the correct user.. Any ideas? thanks!

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  • Should I add try/catch around when casting on an attribute of JSP implicit object?

    - by Michael Mao
    Hi all: Basically what I mean is like this: List<String[]> routes = (List<String[]>)application.getAttribute("routes"); For the above code, it tries to get an attribute named "routes" from the JSP implicit object - application. But as everyone knows, after this line of code, routes may very well contains a null - which means this application hasn't got an attribute named "routes". Is this "casting on null" good programming practice in Java or not? Basically I try to avoid exceptions such as java.io.InvalidCastException I reckon things like this are more as "heritage" of Java 1.4 when generic types were not introduced to this language. So I guess everything stored in application attributes as Objects (Similar to traditional ArrayList). And when you do "downcast", there might be invalid casts. What would you do in this case? Update: Just found that although in the implicit object application I did store a List of String arrays, when I do this : List<double[]> routes = (List<double[]>)application.getAttribute("routes"); It doesn't produce any error... And I felt not comfortable already... And even with this code: out.print(routes.get(0)); It does print out something strange : [Ljava.lang.String;@18b352f Am I printing a "pointer to String"? I can finally get an exception like this: out.print(routes.get(0)[1]); with error : java.lang.ClassCastException: [Ljava.lang.String; Because it was me to add the application attribute, I know which type should it be cast to. I feel this is not "good enough", what if I forget the exact type? I know there are still some cases where this sort of thing would happen, such as in JSP/Servlet when you do casting on session attributes. Is there a better way to do this? Before you say:"OMG, why you don't use Servlets???", I should justify my reason as this: - because my uni sucks, its server can only work with Servlets generated by JSP, and I don't really want to learn how to fix issues like that. look at my previous question on this , and this is uni homework, so I've got no other choice, forget all about war, WEB-INF,etc, but "code everything directly into JSP" - because the professors do that too. :)

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  • Where are SSIS Packages Saved?

    - by Chris
    I right clicked on a Database in the object explorer of SQL Server 2008 Management Studio. I went to Tasks Import Data, and imported some data from a flat text file, opting to save the package on the server. Now how the heck do I get to the package to edit or run it again? Where in SQL Server Management Studio do I go? I've expanded everything and I can't find it. It's driving me nuts.

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  • Opening link in newwindow

    - by Raghu
    Hi, This is Srinivas, I am opening a new window, when i clicked on a link button, that is in gridview, the new window is opening and everything is working fine. The only problem is while opening the new window, the parent window styles getting changed. So, Anyone can please help me. I stucked of this problem from two days... Thanks in Advance...

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  • Can these sorts of programs exist in every Turing-complete language?

    - by I can't tell you my name.
    In every Turing-Complete language, is it possible to create a working Compiler for itself which first runs on an interpreter written in some other language and then compiles it's own source code? (Bootstrapping) Standards-Compilant C++ compiler which outputs binaries for, e.g.: Windows? Regex Parser and Evaluater? World of Warcraft clone? (Assuming the language gets the necessary API bindings as, for example, OpenGL and the WoW source code is available) (Everything here theoretical) Let's take Brainf*ck as an example language.

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  • How to know when to close socket when dealing with HTTP clients?

    - by Y_Y
    Hi, How can I know when to close the socket of an HTTP client (I mean a browser is connecting to my TCP socket server). Everything works perfect but in other for the browser to show what the server has sent, i have to shutdown the server (or call socket.Close()). It works fine if I call (socket.Close()) but I just don't know when.? I don't want to call close in a middle of a request otherwise the browser would have to reload to connect to the server again.

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  • prevent users from downloading music

    - by Duy Nguyen
    hi guys, i have been writing a music website for my customer using ASP.NET. Everything has been cool except I don't know how to prevent the users from downloadng the song which is being played. For example, I click "Heal the world" to play and while the song is playing, I dont't want the IDM download manager or other download programs appear the download dialog

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  • Dependency Injection: I don't get where to start!

    - by Andy
    I have several articles about Dependency Injection, and I can see the benefits, especially when it comes to unit testing. The units can me loosely coupled, and mocking of dependencies can be made. The trouble is - I just don't get where to start. Consider this snippet below of (much edited for the purpose of this post) code that I have. I am instantiating a Plc object from the main form, and passing in a communications mode via the Connect method. In it's present form it becomes hard to test, because I can't isolate the Plc from the CommsChannel to unit test it. (Can I?) The class depends on using a CommsChannel object, but I am only passing in a mode that is used to create this channel within the Plc itself. To use dependancy injection, I should really pass in an already created CommsChannel (via an 'ICommsChannel' interface perhaps) to the Connect method, or maybe via the Plc constructor. Is that right? But then that would mean creating the CommsChannel in my main form first, and this doesn't seem right either, because it feels like everything will come back to the base layer of the main form, where everything begins. Somehow it feels like I am missing a crucial piece of the puzzle. Where do you start? You have to create an instance of something somewhere, but I'm struggling to understand where that should be. public class Plc() { public bool Connect(CommsMode commsMode) { bool success = false; // Create new comms channel. this._commsChannel = this.GetCommsChannel(commsMode); // Attempt connection success = this._commsChannel.Connect(); return this._connected; } private CommsChannel GetCommsChannel(CommsMode mode) { CommsChannel channel; switch (mode) { case CommsMode.RS232: channel = new SerialCommsChannel( SerialCommsSettings.Default.ComPort, SerialCommsSettings.Default.BaudRate, SerialCommsSettings.Default.DataBits, SerialCommsSettings.Default.Parity, SerialCommsSettings.Default.StopBits); break; case CommsMode.Tcp: channel = new TcpCommsChannel( TCPCommsSettings.Default.IP_Address, TCPCommsSettings.Default.Port); break; default: // Throw unknown comms channel exception. } return channel; } }

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  • json specifies "any UNICODE character"?

    - by bukzor
    Maybe this is just my unfamiliarity with unicode, so please correct me if I'm mistaken. Looking at http://json.org/, the spec says that a string can include "any UNICODE character", but this confuses me. JSON is a communication format correct? At the core of it, everything must translate down to bytes. In contrast, UNICODE is a logical format and must be encoded to be able to transmit it, right? So what did they mean there?

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  • CSS: allow image to overflow from a div?

    - by shoosh
    I want to create the following situation: +--------------------------------------+-----------------------+ | 1| | | IMAGE IMAGE IMAGE IMAGE IMAGE IMAGE | TEXT TEXT TEXT | |2 | | +--------------------------------------+-----------------------+ Everything is included in a div called "caption" The text is in a div called "textarea" The image is in a div called "imagearea" The text area has a fixed width the image size can change. It should be aligned to the top right (1) and should overflow from the bottom left (2) How can I do this with CSS?

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  • Directory of "index.html" on site

    - by Camran
    I wonder if the index.html MUST be in the "www" folder on the server after uploading the site? This because I have actually made everything in a folder called "SV", so my site is located in : "www/SV/index.html" My Q is, on the server, could I just create a folder named "SV" under "www" and expect index.html to be automatically displayed ones the users type in the web-adress to my site? Thanks

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  • Preventing server-side scripting, XSS

    - by Tim
    Hey all Are there any pre-made scripts that I can use for PHP / MySQL to prevent server-side scripting and JS injections? I know about the typical functions such as htmlentities, special characters, string replace etc. but is there a simple bit of code or a function that is a failsafe for everything? Any ideas would be great. Many thanks :)

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  • cygwin: svn does not work anymore

    - by mtim
    All of the sudden svn stopped working in cygwin installation on windows xp. when I execute svn binary, nothing happens, svn process does not even show up in the Task Manager. I've reinstalled svn but it did not help (the last resort would be to uninstall cygwin itself). Everything else in cygwin works fine: awk,python,sed,more,less,tail and etc. here is what is happening ... mt@s022 ~ $ which svn /usr/bin/svn mt@s022 ~ $ svn --version mt@s022 ~ $ svn status mt@s022 ~ $ svn info mt@s022 ~ $

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  • special characters strange behavior

    - by andufo
    Hi, i have this string in my utf-8 mysql DB: "Pruebá de eñes" When i print it like plain text, everything works ok, but if i load that same field inside an input, textarea, etc, it becomes: "Pruebá de eñes" How can i solve this problem? =(

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  • asp.net mvc & jquery dialog: What approach do I take to add items to a dropdownlist/select list with

    - by Mark Redman
    Hi, I am new to MVC and have a grasp of the basic model, but still doing everything with postbacks etc. One aspect of the UI I want to build is to have a drop-down-list of items with a button to add an item to the database and refresh the list. Achieving this with WebForms was straight forward as everything was wrapped in UpdatePanels, but what is the best approach to achieve this using MVC? Part of the markup for the list and button look like this: <table> <tr> <td><%=Html.DropDownList("JobTitleSelectList", Model.JobTitleSelectList, "(select job title)", new { @class = "data-entry-field" })%></td> <td>&nbsp;</td> <td><a id="AddJobTitleDialogLink" href="javascript: addJobTitleDialog();" title="Add Job Title"><img id="AddJobTitleButtonImage" src="/Content/Images/Icons/16x16/PlusGrey.png" border="0" /></a></td> </tr> </table> The Dialog is a standard jquery Ui dialog, looks like this: <div id="SingleTextEntryDialog" style="display:none"> <table> <tr> <td>Name:</td> <td><input id="SingleTextEntryDialogText" type="text" size="25" /></td> </tr> </table> </div> I am guessing I need to put this into a UserControl / PartialView (are they the same thing?) Also with the strongly typed View how do I pass the Model or just the SelectList Property to the UserControl or is this not the case? Nor sure if there should be form in the dialog div? or how that is going to postback via ajax. Some examples show a lot of ajax code in the page something like: $.ajax({...}); I assume doing this using jquery is more code than asp.net webforms, but there is just more code to see doing a "View Source" on a page? Your comments appreciated.

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