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  • JQuery / JSON + .Net Service Layer - to WCF or Not to WCF?

    - by hanzolo
    I Recently had a discussion with a colleague of mine about the pros / cons of WCF. He mentioned about how much code is generated to support WCF, and also the overhead required. It was mentioned that a simple jQuery /Ajax post to a .aspx page (or a handler for that matter) that returns JSON would work more efficiently and takes much less code to implement. I am also aware of the new WCF Web API and feel that technology may solve the "bloated"-ness required in attaining a proxy etc... by just outputting JSON. So when developing a relational DB (MSSQL) storage model, with a fairly complex Business Layer (C#) and Data Access Layer (EntityFW).. what's a good technology for creating a "service layer" which will spit out View Models represented in JSON, with a CQRS(Command Query..) approach in mind.. The app would use the service layer to support it's required UI, as well as provide an available subset of services (outputting JSON data) for service subscribers.. In other words an admin panel to support the admin UI, and service endpoints that return JSON to access the configurations made from the administration UI. What are some potential technologies to use as the transport / communication layer. I'd like to use a pure RESTful approach, but am not against doing some URL rewriting with IIS. Obviously some of the available technologies are: WCF WCF Web API (should this even be separate?) Straight request / response (query string to .aspx / handler) Would using MVC .Net solve this entire problem? maybe their single page app approach? any suggestions / feedback from developing this type of application? Thanks,

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  • I have neither grub.conf nur menu.lst

    - by chris
    Hi, I just compiled my own kernel for the first time. At it is written in a tutorial I now want to check whether the kernel got written into the grub.conf file. Well, I did not find a grub.conf file. So I googled. Answer: Ubuntu does not have grub.conf, but rather has a menu.lst (also stored in /boot/grub). So I looked for that file. But I don't have that one either. So now the question: Where is my GRUB data stored? Im using Ubuntu 10.10 with Kernel 2.6.35-27

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  • Visual Basic link to SQL output to Word

    - by CLO_471
    I am in need of some advice/references. I am currently trying to develop a legal document interface. There are certain fields in which I need to query out of my sql db and have those fields output into a document that can be printed. I am trying to develop a user interface where people can enter fields that will output to a document template but at the same time I need the template to be able to pull data from the SQL database. This is the reason why I think that VB might be my best choice and because it is one of the only OOP languages I am familiar with presently. Does anyone know that best way to be able to handle this type of job?? I know that you can use VBA within MS Word and have the form output variables to a word template. But, is there a way to have the word document also pull information from the SQL db? Is the best option to use VB linked to SQL and run queries to get the information from the database and then have it output to a for within VB? Is it possible for VB to be linked to a SQL db and output variables and SQL fields to a Word Template? I have looked into Mail Merge and I see that it allows users to pull data from an Access query but I dont think it would be easy to automate and it seems that users would need to have an advanced knowledge of MS Word and Access to handle this. I am not finding much useful information online so I came here. Any advice or references would be greatly appreciated. If there is a better way please let me know.

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  • Exporting XNA class library as a DLL file

    - by Will Bagley
    I have downloaded an open source project that I intend to use with my current game. The download came with all the class files from the original project as well as a pre-compiled DLL file representing the project. I was able to easily link this DLL with my current project and get it working just fine, no problems there. The problem I now have is that I want to make a couple of changes to the original libraries (extend its functionality a bit to better suit my needs) and re-export the class library as a DLL again, but I have no clue how to do this. Is there some simple way in VS where I can just take the class library and export/compile it as a DLL file again or is there more to it than that? This seems like something that should be pretty simple but my efforts to find an answer have so far come up with nothing. Thanks in advance.

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  • How To: Spell Check InfoPath web form in SharePoint

    - by JeremyRamos
    This post is a compiled version of Steve Cavanagh's blog post on How To: Spell Check an InfoPath form displayed via XmlFormView. Many are not able to follow Steve's instructions due to lack of details. See below a downloadable zip of all changes need installed for your InfoPath Spell Checker. File Contents: CustomSpellCheckEntirePage.js - This is a customized SpellCheckEntirePage.js which includes changes outlined in Steve's post above.   FormServer.aspx - Note that this will replace the exisitng FormServer.aspx - this file acts like a masterpage for all infopath forms. So this change will add the spellchecker to all infopath forms in the sharepoint farm. Only thing i changed here is to add the 'Spell Check' link before and after the form.   ReadMe.rtf - Contains instructions where to copy the files to in your MOSS WFE server.

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  • Using C++11 for cross-platform Game Engine Development

    - by Samaursa
    Note: This is not a 'give your opinion' question about C++03 and C++11. Our game engine, written in C++03, is designed to be compiled on Windows, OSX and iOS. Linux support is planned for the (very) near future. Our experience is limited when it comes to consoles, which is why I am asking this question. Currently, we are debating whether switching to C++11 and using non-compatible features of the C++11 standard could pose a problem in the near future when we need to port our engine to any of the current gen consoles (perhaps the compilers supported by some console(s) do not support C++11 yet? We don't know...). So, game developers who have experience across multiple platforms and consoles, do you think we should stick to C++03 until the new generation of consoles arrive and most everybody has switched to C++11 standard (have they already?). Or are most consoles using/support compilers (VC++, GCC or variants?) that are already supporting C++11 features?

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  • The requested resource is not available

    - by James Pj
    I have written a Java servlet program and run it through local Tomcat 7, But it was showing following error : HTTP Status 404 - /skypark/registration type Status report message /skypark/registration description The requested resource is not available. Apache Tomcat/7.0.33 I don't know what was the reason for it my Html page is <html> <head> <title> User registration </title> </head> <body> <form action="registration" method="post"> <center> <h2><b>Skypark User Registration</b></h2> <table border="0"> <tr><td> First Name </td><td> <input type="text" name="fname"/></br> </td></tr><tr><td> Last Name </td><td> <input type="text" name="lname"/></br> </td></tr><tr><td> UserName </td><td> <input type="text" name="uname"></br> </td></tr><tr><td> Enter Password </td><td> <input type="password" name="pass"></br> </td></tr><tr><td> Re-Type Password </td><td> <input type="password" name="pass1"></br> </td></tr><tr><td> Enter Email ID </td><td> <input type="email" name="email1"></br> </td></tr><tr><td> Phone Number </td><td> <input type="number" name="phone"> </td></tr><tr><td> Gender<br> </td></tr><tr><td> <input type="radio" name="gender" value="Male">Male</input></br> </td></tr><tr><td> <input type="radio" name="gender" value="Female">Female</input></br> </td></tr><tr><td> Enter Your Date of Birth<br> </td><td> <Table Border=0> <tr> <td> Date </td> <td>Month</td> <td>Year</td> </tr><tr> <td> <select name="date"> <option value="1">1</option> <option value="2">2</option> <option value="3">3</option> <option value="4">4</option> <option value="5">5</option> . . . have some code . . . </table> <input type="submit" value="Submit"></br> </center> </form> </body> </html> My servlet is : package skypark; import skypark.*; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.sql.*; public class Registration extends HttpServlet { public static Connection prepareConnection()throws ClassNotFoundException,SQLException { String dcn="oracle.jdbc.driver.OracleDriver"; String url="jdbc:oracle:thin:@JamesPJ-PC:1521:skypark"; String usname="system"; String pass="tiger"; Class.forName(dcn); return DriverManager.getConnection(url,usname,pass); } public void doPost(HttpServletRequest req,HttpServletResponse resp)throws ServletException,IOException { resp.setContentType("text/html"); PrintWriter out=resp.getWriter(); try { String phone1,uname,fname,lname,dob,address,city,state,country,pin,email,password,gender,lang,qual,relegion,privacy,hobbies,fav; uname=req.getParameter("uname"); fname=req.getParameter("fname"); lname=req.getParameter("lname"); dob=req.getParameter("date"); address=req.getParameter("address"); city=req.getParameter("city"); state=req.getParameter("state"); country=req.getParameter("country"); pin=req.getParameter("pin"); email=req.getParameter("email1"); password=req.getParameter("password"); gender=req.getParameter("gender"); phone1=req.getParameter("phone"); lang=""; qual=""; relegion=""; privacy=""; hobbies=""; fav=""; int phone=Integer.parseInt(phone1); Connection con=prepareConnection(); String Query="Insert into regdetails values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"; PreparedStatement ps=con.prepareStatement(Query); ps.setString(1,uname); ps.setString(2,fname); ps.setString(3,lname); ps.setString(4,dob); ps.setString(5,address); ps.setString(6,city); ps.setString(7,state); ps.setString(8,country); ps.setString(9,pin); ps.setString(10,lang); ps.setString(11,qual); ps.setString(12,relegion); ps.setString(13,privacy); ps.setString(14,hobbies); ps.setString(15,fav); ps.setString(16,gender); int c=ps.executeUpdate(); String query="insert into passmanager values(?,?,?,?)"; PreparedStatement ps1=con.prepareStatement(query); ps1.setString(1,uname); ps1.setString(2,password); ps1.setString(3,email); ps1.setInt(4,phone); int i=ps1.executeUpdate(); if(c==1||c==Statement.SUCCESS_NO_INFO && i==1||i==Statement.SUCCESS_NO_INFO) { out.println("<html><head><title>Login</title></head><body>"); out.println("<center><h2>Skypark.com</h2>"); out.println("<table border=0><tr>"); out.println("<td>UserName/E-Mail</td>"); out.println("<form action=login method=post"); out.println("<td><input type=text name=uname></td>"); out.println("</tr><tr><td>Password</td>"); out.println("<td><input type=password name=pass></td></tr></table>"); out.println("<input type=submit value=Login>"); out.println("</form></body></html>"); } else { out.println("<html><head><title>Error!</title></head><body>"); out.println("<center><b>Given details are incorrect</b>"); out.println(" Please try again</center></body></html>"); RequestDispatcher rd=req.getRequestDispatcher("registration.html"); rd.include(req,resp); return; } } catch(Exception e) { out.println("<html><head><title>Error!</title><body>"); out.println("<b><i>Unable to process try after some time</i></b>"); out.println("</body></html>"); RequestDispatcher rd=req.getRequestDispatcher("registration.html"); rd.include(req,resp); return; } out.flush(); out.close(); } } And the web.xml file is <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0" metadata-complete="true"> <servlet> <servlet-name>reg</servlet-name> <servlet-class>skypark.Registration</servlet-class> </servlet> <servlet-mapping> <servlet-name>reg</servlet-name> <url-pattern>/registration</url-pattern> </servlet-mapping> This i kept in C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\skypark\WEB_INF\web.xml and servlet class in C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\skypark\WEB_INF\classes\skypark and registration.html in C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\skypark\ if any mistake in this makes above error means please help me.Thanks in advance....

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  • Coolest Twitter Usernames – One Letter @A to @Z Names

    - by Gopinath
    How cool is your Twitter user name? If you think your twitter name is catchy and cool, what do you think about the Twitter usernames that are just one letter? Lucky Tweeple who registered at the inaugural days of Twitter service were able to grab single letter user names. The Atlantic site has compiled details about the twitter user names @a to @z and it’s an interesting read. Catch the details over here at The Atlantic [via im] This article titled,Coolest Twitter Usernames – One Letter @A to @Z Names, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Yahoo search: different results shown in two identical searches

    - by Marco Demaio
    Hello,simple question: searching on http://www.yahoo.it for villa matrimonio bologna I noticed Yahoo shows different results. You need to retry few times to get this done maybe exiting the browser and openeing it again, or maybe searching once and then clearing browser cookies and then search again (it's even easier to test if you use two different browsers at the same time to search for the same phrase). Anyway in order to reproduce this easily I write down here the query shown in the address bar after the search, so you can just click on these to see the results shown by entering these query: http://it.search.yahoo.com/search;_ylt=AirvLYKvBMPP_6MpAmONN14brK5_?vc=&p=villa+matrimonio+bologna&toggle=1&cop=mss&ei=UTF-8&fr=yfp-t-709 http://it.search.yahoo.com/search;_ylt=AirvLYKvBMPP_6MpAmONN14brK5_?vc=&p=villa+matrimonio+bologna&toggle=1&cop=mss&ei=UTF-8&fr=sfp Note the last parameter fr is different, but it's Yahoo that set it (not me), I don't even know what it means. You can see in the search box that the searched phrase is IDENTICAL in both cases. So why Yahoo is giving out different results on same search phrase? I used the same browser and performed the test in few minutes by simply trying more than once. You may also notice that the number of results returned (written on the left side of the page) is different, for the 1st search it returns 274K results, for the 2nd one 5.38M results. Actually you might think that this is just an error on Yahoo, but it's almost 1 year that while looking once in a while at some websites to see how they are ranking on Yahoo and also Google, I noticed that two searches on the same phrase show up different results even on the same day after few minutes/hours. I couldn't reproduce this behaviour also on Google so I can not say for sure, but since it seems to me it happened sometimes I was wondering if anyone of you noticed it too. Do you know if this is the normal behaviour of search engines? Because if it's normal (and it's just me that noticed it only now) I wonder how do you understand how well a site is ranking on a search engine, you could even see one of your customer's website ranking differently compared to what your customer sees on his PC.

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  • LDAP Bind request failing

    - by Madhur Ahuja
    I have a Windows Server 2008 R2 Active Directory domain controller with domain madhurmoss.com I have a Linux box which is trying to connect to LDAP (389) on above box, which is failing. Upon inspection in Wireshark, I see a bind request with following query sAMAccountName=Administrator,DC=madhurmoss,DC=com and result with invalid Credentials 80090308: LdapErr: DSID-0C0903A9, comment: AcceptSecurityContext error, data 52e, v1db0 I want it to connect it through Administrator which lies in CN=Administrator,CN=Users,DC=madhurmoss,DC=com The supplied credentials are correct. I believe the query sAMAccountName=Administrator,DC=madhurmoss,DC=com is wrong. Can anyone guide me what could be wrong ?

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  • CON6714 - Mixed-Language Development: Leveraging Native Code from Java

    - by Darryl Gove
    Here's the abstract from my JavaOne talk: There are some situations in which it is necessary to call native code (C/C++ compiled code) from Java applications. This session describes how to do this efficiently and how to performance-tune the resulting applications. The objectives for the session are: Explain reasons for using native code in Java applications Describe pitfalls of calling native code from Java Discuss performance-tuning of Java apps that use native code I'll cover how to call native code from Java, debugging native code, and then I'll dig into performance tuning the code. The talk is not going too deep on performance tuning - focusing on the JNI specific topics; I'll do a bit more about performance tuning in my OpenWorld talk later in the day.

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  • HTTP Content-type header for cached files

    - by Brian
    Hello, Using Apache with mod_rewrite, when I load a .css or .js file and view the HTTP headers, the Content-type is only set correctly the first time I load it - subsequent refreshes are missing Content-type altogether and it's creating some problems for me. Specifically, gzip is not compressing these files. I can get around this by appending a random query string value to the end of each filename, eg. http://www.site.com/script.js?12345 However, I don't want to have to do that, since caching is good and all I want is for the Content-type to be present. I've tried using a RewriteRule to force the type but still didn't solve the problem. Any ideas? Thanks, Brian More Details: HTTP headers WITHOUT random query string value: http://localhost/script.js GET /script.js HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 Accept: */* Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Referer: http://localhost/ Cookie: PHPSESSID=ke3p35v5qbus24che765p9jni5; If-Modified-Since: Thu, 29 Apr 2010 15:49:56 GMT If-None-Match: "3440e9-119ed-485621404f100" Cache-Control: max-age=0 HTTP/1.1 304 Not Modified Date: Thu, 29 Apr 2010 20:19:44 GMT Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8l DAV/2 PHP/5.3.1 Connection: Keep-Alive Keep-Alive: timeout=5, max=100 Etag: "3440e9-119ed-485621404f100" Vary: Accept-Encoding X-Pad: avoid browser bug HTTP headers WITH random query string value: http://localhost/script.js?c947344de8278053f6edbb4365550b25 GET /script.js?c947344de8278053f6edbb4365550b25 HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 Accept: */* Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Referer: http://localhost/ Cookie: PHPSESSID=ke3p35v5qbus24che765p9jni5; HTTP/1.1 200 OK Date: Thu, 29 Apr 2010 20:14:40 GMT Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8l DAV/2 PHP/5.3.1 Last-Modified: Thu, 29 Apr 2010 15:49:56 GMT Etag: "3440e9-119ed-485621404f100" Accept-Ranges: bytes Vary: Accept-Encoding Content-Encoding: gzip Content-Length: 24605 Keep-Alive: timeout=5, max=100 Connection: Keep-Alive Content-Type: application/javascript

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  • Unable to install VMWare Workstation v8

    - by pst007x
    Installing VMware 8.0.2 64bit Ubuntu 12.04LTS 64bit BETA My Kernel version is: 3.2.0-20-generic pst007x@pst007x-Aspire-5741:~$ sudo sh VMware-Workstation-Full-8.0.2- 591240.x86_64.bundle Installs ok When I launch I am asked to install modules which are compiled and loaded into the running kernel. A window opens VMware Kernel Module Updater This fails on Virtual Network Device ERROR LOG. UPDATE: PATCH. When I try to add patch, following error: pst007x@pst007x-Aspire-5741:~$ sudo sh patch-modules_3.2.0.sh [sudo] password for pst007x: patch-modules_3.2.0.sh: 27: [: workstation8.0.2: unexpected operator patch-modules_3.2.0.sh: 28: [: workstation8.0.2: unexpected operator Sorry, this script is only for VMWare WorkStation 8.0.2 or VMWare Player 4.0.2. Exiting pst007x@pst007x-Aspire-5741:~$ I have fully un-installed, and re-installed. I am installing the correct version. Probably a problem with the patch. VMware installs perfectly on Ubuntu 11.10 This is how I uninstalled.

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  • Tie stock quote value to cell in Excel 2011 Mac

    - by vedantchandra
    I've been working on a mock stock portfolio in Excel, and I've been looking for ways to automatically update the data, eg. stock price and P/E ratio. I have tried using a web query to MSN Money, but that just brings up the whole stock quote across multiple cells, I want data to be updated in individual cells only. The only web query solution I can think of is if someone hosted a website where each value in the stock quote was saved on a different HTML file. I could then WebQuery to that file for each cell requiring that value. However, no website offers this. So in essence, is there any tool on Excel 2011 Mac that will let me pull individual values from a stock quote and assign them to a single cell?

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  • Sql Server Data Tools & Entity Framework - is there any synergy here?

    - by Benjol
    Coming out of a project using Linq2Sql, I suspect that the next (bigger) one might push me into the arms of Entity Framework. I've done some reading-up on the subject, but what I haven't managed to find is a coherent story about how SQL Server Data Tools and Entity Framework should/could/might be used together. Were they conceived totally separately, and using them together is stroking the wrong way? Are they somehow totally orthogonal and I'm missing the point? Some reasons why I think I might want both: SSDT is great for having 'compiled' (checked) and easily versionable sql and schema But the SSDT 'migration/update' story is not convincing (to me): "Update anything" works ok for schema, but there's no way (AFAIK) that it can ever work for data. On the other hand, I haven't tried the EF migration to know if it presents similar problems, but the Up/Down bits look quite handy.

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  • Issue in extending webapplication sharepoint

    - by GHIYA
    I have extended a webapplication in a farm. main server vsmoss1 where i did vsmoss1 ->webapplication(80) vm.com -> extended web app(of above one)anonymous WFE server name vsmoss2 WFE server name vsmoss3 i have load balanced it to got to vsmoss2 and vsmoss3 when someone hits vm.com when i hit vm.com it works fine without authentication(shows content query webpart also on my page) I know there is no need to do that but when I hit vsmoss2 and vsmoss3 it shows me error on my content query webpart ....any solution for that? Finding this strange tried this : I closed both extended webapp in vsmoss2 and vsmoss3 result: site is up and running but this time with authentication I closed both extended and main webapplication site in vsmoss2 and vsmoss3 is down I closed main webapplication in vsmoss2 and vsmoss3 site is up and running without authentication Anyone is having idea why this is showing behaviour like this...?

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  • Creating symlink for Postgres

    - by Edwin
    As a developer, I often ssh right into my local database, just to test my application before pushing my code. However, I find that every time I want to access Postgres, I have to type in postgres@ubuntu:~$ /usr/local/pgsql/bin/psql test whereas on my work machine, all I have to do is type postgres@ubuntu:~$ psql --dbname=test --username=user I tried creating a symlink, which was successful, but whenever I try connecting to it through this shortcut, I get the following error message: psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"? How do I get this to work? In case it makes any difference, I'm using a self-compiled version of the 9.1.x series.

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  • How to link subprograms to a main program's game loop?

    - by Jim
    I recently discovered Crobot which is (briefly) a game where each player codes a virtual robot in a pseudo-C language. Each robot is then put in an arena where it fights against other robots. A robots' source code has this shape : /* Beginning file robot.r */ main() { while (1) { /* Do whatever you want */ ... move(); ... fire(); } } /* End file robot.r */ You can see that : The code is totally independent from any library/include Some predefined functions are available (move, fire, etc…) The program has its own game loop, and consequently is not called every frame My question is roughly : how does it work ? It seems that each robot's code is compiled by the main program and then used in a way I cannot understand. I thought it could yields a thread for each robot, but I have not any proof of this and it seems a bit complicated to achieve it. Any idea how it could work, someone ?

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  • OLL Live webcast - Using SQL for Pattern Matching in Oracle Database

    - by KLaker
    If you are interested in learning about our exciting new 12c SQL pattern matching feature then mark your diaries. On Wednesday, October 30th at 8:00 am (US/Pacific time zone) Supriya Ananth, who is one of our top curriculum developers at Oracle, will be hosting an OLL webcast on our new SQL pattern matching feature. The ability to recognize patterns in a sequence of rows has been a capability that was widely desired, but not possible with SQL until now. Row pattern matching in native SQL improves application and development productivity and query efficiency for row-sequence analysis. With Oracle Database 12c you can use the new MATCH_RECOGNIZE clause to perform pattern matching in SQL to do the following: Logically partition and order the data using the PARTITION BY and ORDER BY clauses Use regular expressions syntax to define patterns of rows to seek using the PATTERN clause. These patterns a powerful and expressive feature, applied to the pattern variables you define. Specify the logical conditions required to map a row to a row pattern variable in the DEFINE clause. Define measures, which are expressions usable in the MEASURES clause of the SQL query. For more information and to register for this exciting webcast please visit the OLL Live website, see here: https://apex.oracle.com/pls/apex/f?p=44785:145:116820049307135::::P145_EVENT_ID,P145_PREV_PAGE:461,143.  Please note - if the above link does not work then go to OLL (https://apex.oracle.com/pls/apex/f?p=44785:1:) and click the OLL Live icon (upper right, beneath the Login link or logout link if you are already logged in). The pattern matching webcast is listed on the calendar of events on 30 October.

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  • The Exceptional EXCEPT clause

    - by steveh99999
    Ok, I exaggerate, but it can be useful… I came across some ‘poorly-written’ stored procedures on a SQL server recently, that were using sp_xml_preparedocument. Unfortunately these procs were  not properly removing the memory allocated to XML structures – ie they were not subsequently calling sp_xml_removedocument… I needed a quick way of identifying on the server how many stored procedures this affected.. Here’s what I used.. EXEC sp_msforeachdb 'USE ? SELECT DB_NAME(),OBJECT_NAME(s1.id) FROM syscomments s1 WHERE [text] LIKE ''%sp_xml_preparedocument%'' EXCEPT SELECT DB_NAME(),OBJECT_NAME(s2.id) FROM syscomments s2 WHERE [text] LIKE ''%sp_xml_removedocument%'' ‘ There’s three nice features about the code above… 1. It uses sp_msforeachdb. There’s a nice blog on this statement here 2. It uses the EXCEPT clause.  So in the above query I get all the procedures which include the sp_xml_preparedocument string, but by using the EXCEPT clause I remove all the procedures which contain sp_xml_removedocument.  Read more about EXCEPT here 3. It can be used to quickly identify incorrect usage of sp_xml_preparedocument. Read more about this here The above query isn’t perfect – I’m not properly parsing the SQL text to ignore comments for example - but for the quick analysis I needed to perform, it was just the job…

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  • Why are there two different kinds of linking, i.e. static and dynamic?

    - by davidk01
    I've been bitten for the n-th time now by a library mismatch between a build and deployment environment. The build environment had libruby.so.2.0 and the deployment environment had libruby.a. One ruby was built with RVM, the other was built with ruby-build. The reason I ran into a problem was because zookeeper was compiled in a build environment that had the shared library but the deployment environment only had the static library. In all the years I've been writing application code I have never once wished that the binaries I was using where linked against shared objects. What is the reason the dichotomy persists to this day on modern operating systems?

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  • Inconsistent mouse cursor status while typing

    - by Jim
    I have noticed that when I type in some programs, Text Editor, Terminal, Bluefish, Gnome Baker, etc. the mouse cursor disappears while I am typing. In other programs like Firefox and LibreOffice, it does not. I am not an application programmer, but I imagined it has to do with their cross-platform nature and the way they are compiled or the toolkits they use. Then I noticed that Gnome-Do behaves the same way, the cursor stays on screen while typing. Why is there inconsistent handling of the mouse cursor, while typing, across different applications? Thank you.

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  • Erratic DNS name resolution

    - by alex
    Hi all, We have a client we host a web for (blog.foobar.es). We do not manage foobar.es's DNS setup, we just told them to point blog.foobar.es to our web server's IP. We have noticed that sometimes we cannot browse to blog.foobar.es, but we can browse to other sites on that server. Troubleshooting a bit using host(1) yields something funny: $ host blog.foobar.es 8.8.8.8 Using domain server: Name: 8.8.8.8 Address: 8.8.8.8#53 Aliases: Host blog.foobar.es not found: 3(NXDOMAIN) , being 8.8.8.8 one of Google's public DNS servers. However, sometimes the same server resolves the name correctly (!). Another funny thing, is that our ISP's DNS servers sometimes say: $ host blog.foobar.es 80.58.61.250 Using domain server: Name: 80.58.61.250 Address: 80.58.61.250#53 Aliases: blog.foobar.es has address x.x.x.x Host blog.foobar.es not found: 3(NXDOMAIN) Which I don't really understand. I've dug around using dig(1), and have noticed they've set up a SOA record for foobar.es: $ dig foobar.es ; <<>> DiG 9.7.0-P1 <<>> foobar.es ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59824 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;foobar.es. IN A ;; AUTHORITY SECTION: foobar.es. 86400 IN SOA dns1.provider.es. root.dns1.provider.es. 2011030301 86400 7200 2592000 172800 ;; Query time: 78 msec ;; SERVER: 80.58.61.250#53(80.58.61.250) ;; WHEN: Thu Mar 3 16:16:19 2011 ;; MSG SIZE rcvd: 78 ... which I'm completely unfamiliar with. Ideas? We can't really do much as we do not control DNS, but we'd like to point our clients in the right direction...

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  • Entity Component System for HUD and GUI

    - by Jason L.
    This is a very rough sketch of how I currently have things designed. It should, at least, give an idea of how my ECS is currently designed. If you notice in that diagram, I have basically split the HUD out of the ECS. They have their own set of things (HudLayer, HudComponent, etc) and are handled differently. This is where I'm struggling, though. There are many different instances in which the HUD will need to know about entities. Not just data changing (I have an event dispatcher for that), but the actual entity and all it encompasses. There are also situations where entities will need to be able to query the HUD for data. Let's take a couple examples: First, my equipment screen. On here I can change the equipment on a character (Entity). In order for this to happen, I need to know about the entity. At least I think I do? How can I handle this? The second scenario involves my Systems needing to query a HudComponent for data. A specific example would be my battle system. Each "team" is given a 3x3 grid they can move around in. See here: Skills target these cells, and not the player, so I would need a way for my systems to determine which cells are occupied and which are not. Basically I need a way for two way communication between Systems and my HUD. I know it's recommended (by some people, anyways) to take your HUD out of the ECS. Is that appropriate in my case?

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  • An adequate message authentication code for REST

    - by Andras Zoltan
    My REST service currently uses SCRAM authentication to issue tokens for callers and users. We have the ability to revoke caller privileges and ban IPs, as well as impose quotas to any type of request. One thing that I haven't implemented, however, is MAC for requests. As I've thought about it more, for some requests I think this is needed, because otherwise tokens can be stolen and before we identify this and deactivate the associated caller account, some damage could be done to our user accounts. In many systems the MAC is generated from the body or query string of the request, however this is difficult to implement as I'm using the ASP.Net Web API and don't want to read the body twice. Equally importantly I want to keep it simple for callers to access the service. So what I'm thinking is to have a MAC calculated on: the url, possibly minus query string the verb the request ip (potentially is a barrier on some mobile devices though) utc date and time when the client issues the request. For the last one I would have the client send that string in a request header, of course - and I can use it to decide whether the request is 'fresh' enough. My thinking is that whilst this doesn't prevent message body tampering it does prevent using a model request to use as a template for different requests later on by a malicious third party. I believe only the most aggressive man in the middle attack would be able to subvert this, and I don't think our services offer any information or ability that is valuable enough to warrant that. The services will use SSL as well, for sensitive stuff. And if I do this, then I'll be using HMAC-SHA-256 and issuing private keys for HMAC appropriately. Does this sound enough? Have I missed anything? I don't think I'm a beginner when it comes to security, but when working on it I always. am shrouded in doubt, so I appreciate having this community to call upon!

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