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  • WCF/webservice architecture question

    - by M.R.
    I have a requirement to create a webservice to expose certain items from a CMS as a web service, and I need some suggestions - the structure of the items is as such: item - field 1 - field 2 - field 3 - field 4 So, one would think that the class for this will be: public class MyItem { public string ItemName { get; set; } public List<MyField> Fields { get; set; } } public class MyField { public string FieldName { get; set; } public string FieldValue { get; set; } //they are always string (except - see below) } This works for when its always one level deep, but sometimes, one of the fields is actually a point to ANOTHER item (MyItem) or multiple MyItem (List<MyItem>), so I thought I would change the structure of MyField as follows, to make FieldValue as object; public class MyField { public string FieldName { get; set; } public object FieldValue { get; set; } //changed to object } So, now, I can put whatever I want in there. This is great in theory, but how will clients consume this? I suspect that when users make a reference to this web service, they won't know which object is being returned in that field? This seems like a not-so-good design. Is there a better approach to this?

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  • centos how to install systemtap

    - by Mingfei.hua
    I'm really new to sysmtemtap. just want to install and try systemtap on my lab server. My Linux release version is centos 6.3 and kernel version 2.6.32-279.5.2.el6.i686. I followed some doument, do yum install kernel-devel yum install kernel-debuginfo yum install systemtap all completed without error or warning. but when I try to test systemtap by stap -v -e 'probe vfs.read {printf("read performed\n"); exit()}' I got error Pass 1: parsed user script and 83 library script(s) using 25180virt/14088res/2684shr kb, in 120usr/10sys/161real ms. semantic error: missing i386 kernel/module debuginfo under '/lib/modules/2.6.32-279.5.2.el6.i686/build' while resolving probe point kernel.function("vfs_read")

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  • Visual Studio 2010 Is Here!

    - by Bill Evjen
    I think back to the days of the first versions of Visual Studio (when it was called Visual Studio .NET, remember?) and I think about how far Microsoft has come with this IDE. It really is the best IDE on the market. There is so much to this IDE it is amazing. It now can really handle managing your complete software application development lifecycle. For me, it is (besides Windows 7) the best and most successful product Microsoft has developed. You can obviously get this now and it is available on MSDN and some other places: MSDN Visual Studio Trial Editions Visual Studio 2010 Express Editions (free) You will also find great info at the Visual Studio Developer Center. Some other interesting tidbits of info: JetBrain’s ReSharper 5.0 has been released for VS2010 Oracle will have the new Oracle Dev Tools for VS2010 within one month - http://bit.ly/9gC9NE Visual Studio 64-bit - Why there is no 64-bit version of VS - http://bit.ly/dhhwAj In installing this version of Visual Studio, if you have been working on the previous RC builds, then you are going to want to uninstall these previous editions of the 2010 product. You can do this through the Add Remove Programs dialog and you are going to want to select the appropriate item from the long list of Visual Studio items. You are then going to want to step through the Visual Studio dialog (it will seem as if you are installing it again) – and you will then come to a point where you can select the option to Uninstall the entire application. If you have installed the Silverlight 4 RC stuff, then you are also going to want to uninstall this and you are also going to want to uninstall the “Update for Visual Studio 2010 (KB976272)” before installing Silverlight RC2 – which you can find on www.silverlight.net. Technorati Tags: vs2010,.net,visualstudio,microsoft

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  • What was your most expensive computer rig?

    - by AlbertoPL
    I'm curious as to how much people are willing to spend on a typical computer. My most expensive machine is a gaming rig complete with an ATI Radeon HD4850, Wolfdale 3.0 GHZ Intel Core 2 Duo, 500 Gb hard drive, Antec 900 computer case, the works. I also have a 2-monitor set up. I'd have to say this thing has cost me a little more than a grand at this point, and I'd put the total value of the components at roughly $1300. So, how far have you gone with your computer rigs and has it been worth it?

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  • GMail IMAP + Apple Mail / iPhone - "Account exceeded bandwidth limits. (Failure)"

    - by bpapa
    Started seeing this this morning in Apple Mail. I have one of those exclamation point error indicators next to "Inbox", with this error message when I click on it: There may be a problem with the mail server or network. Verify the settings for account “IMAP Account” or try again. The server returned the error: Account exceeded bandwidth limits. (Failure). This is in Snow Leopard. I'm using GMail IMAP, and I am way below the size quota - I've never heard of there even being a bandwidth quota. I'm also not getting mail from the same account to the mail app on my iPhone. EDIT - a month later I'm seeing this, and I'm thinking of just switching Mobile Me. EDIT AGAIN - Making community wiki. I stopped seeing the problem once I updated Snow Leopard to the latest version, but since others continue to see it...

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  • VLC Media Server

    - by Josh
    We are using VLC on ubuntu, and trying to set up a streaming media server. We have the http interface working fine from remote computers, and we can also see the video playing as text if we don't screen VLC. Our problem is the output streaming. When we use the main VLC page you get when you goto the servers IP it does not save the output MRL (refreshing page it will go away, even after clicking save.) We tried to VLM page and it appears to work fine from the http page (it buffers, plays, timers go up when not paused, etc.) However, we still cannot connect remotely with a VLC client. The output parameters do save properly on the VLM page. We are noobs when it comes to this. Does anyone have a very to the point procedure of getting a file X to play and stream on ubuntu using VLC assuming VLC is installed?

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  • Read data from separate CSV file in OpenOffice Calc

    - by Thomi
    Hi, I have a very large CSV file (many thousands of rows) that I want to work with. Due to the size of the file, I don't want to import it into openoffice. Rather, I want to create a spreadsheet that contains formulas & graphs that read from this (or any other) CSV file I point it it. Ideally the spreadsheet will ask me what CSV file I want to use, allowing me to change the data source dynamically. Any ideas?

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  • How do I configure an ordinary TV remote control to work with lirc on Linux?

    - by Allan Lewis
    I am running MythTV on Ubuntu 9.10 and I would like to use a TV remote to control it. I know that lirc needs a configuration file for the remote, but none of my remotes is in the official database. If I point a remote at the receiver on my TV card (a Pinnacle PCTV "Solo", model 72e) and press a button, dmesg logs the code generated by the remote, so I assume I just have to make a config file with a list of commands assigned to these codes. I've read a few how-tos but I still don't understand exactly how to create the config file. Some of the guides I've read refer to IR receivers on TV cards working at a "higher level of abstraction", which I take to mean that they decode the signal and provide a code, like the ones I can see in dmesg, rather than just giving raw data, but none of them explain where to go from there! Any help would be greatly appreciated!

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  • how to access locally deployed webapp on ipodtouch ?

    - by abhinav
    Hi, I have a wifi network at home with a couple of laptops. I am running a Tapestry webapp on my machine. I can access this webapp from the other laptop if I use the IP address of my machine (I mean enter something like : http://192.168.1.53:8080/webapp/index.html). Now, I also want to access the same webapp through my iPodTouch which is also in this wifi network. However, when I try to do so in Safari on iPodTouch, it fails. Could someone point out what's the problem here ? Thanks, Abhinav

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  • Did Microsoft designers got their butts kicked 3 years ago?

    - by John Conwell
    This is something I've been wondering about for about a year now.  Microsoft has a history of creating very useful products, with lots of useful features.  But useful does not mean usable.  A lot of stuff coming out of Redmond the past 10 years don't really seem to have been well thought out from a user design point of view.  Lots of extra steps, lots of popup windows...very little innovative thinking going on about the user experience of these products.But about a year ago I started seeing changes in the new products coming out of Microsoft.  Windows 7 is a good example of a big change.  They really got their asses handed to them on Vista, so they had to make a change.  But it looks like this change in philosophy has bled over to other areas.  The new Office (2010) lineup has a lot of changes in it to make it way more usable. Given that big changes like this take about 3 years to go from start to actually shipping product, I'm curious what happened internally at Microsoft that really drove this change in product design.  I think that Microsoft got so focused on just adding new functionality for so long, they forgot about the little things that can really make or break a product.  Office 2010 is full of these little things that make it much nicer to use.  I just hope its not too late for them.

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  • Chrome Java Plugin not working after moving Java installation directory

    - by Florian Peschka
    I recently moved all my Java installations from C:\Program Files\Java to D:\Java, as my C:\ partition only had a few MB of free space left and windows kept on bugging me about it. I also edited every registry entry in HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft that pointed to the old directory to now point to the new one. Then changed the PATH variables and removed the old files, did a restart, and all Java applications work just fine. Yet, Chrome is the only application that seems to have a problem with what I did, as the Java Plugin isn't recognized any more. Are there any registry entires I may have missed? Maybe in the Chrome registry? How can I make this work again?

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  • Eclipse Juno failing to start with Java returning 1 error report

    - by Richard Lewin
    I have been using Eclipse Juno on windows 8 without any issues until yesterday when, upon starting Eclipse it shows the initial splash screen and then shows the following message: Eclipse Java was started but returned exit code=1 C:\Windows\system32\javaw.exe -Dosgi.requiredJavaVersion=1.5 -Dhelp.lucene.tokenizer=standard -Xms40m -Xmx384m -XX:MaxPermSize=256m -jar C:\Program Files\eclipse\plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar -os win32 -ws win32 -arch x86_64 -showsplash C:\Program Files\eclipse\plugins\org.eclipse.platform_4.2.0.v201206081400\splash.bmp -launcher C:\Program Files\eclipse\eclipse.exe -name Eclipse --launcher.library C:\Program Files\eclipse\plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120522-1813\eclipse_1503.dll -startup C:\Program Files\eclipse\plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar --launcher.overrideVmargs -exitdata 13f4_5c -product org.eclipse.epp.package.java.product -vm C:\Windows\system32\javaw.exe -vmargs -Dosgi.requiredJavaVersion=1.5 -Dhelp.lucene.tokenizer=standard -Xms40m -Xmx384m -XX:MaxPermSize=256m -jar C:\Program Files\eclipse\plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar OK At this point Eclipse does not load any further. I have attempted to re-install the Java JDK and JRE without having any effect. I have also re-downloaded Eclipse Juno and run it as a 'fresh' startup which has until now worked initially yesterday

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  • MySQL: "UPDATE command denied to user ''@'localhost'"

    - by Uncle Nerdicus
    For some reason when I installed MySQL on my machine (a Mac running OS X 10.9) the 'root' MySQL account got messed up and I don't have access to it, but I do have access to the standard MySQL account 'sean@localhost' which I use to log into phpMyAdmin. I am trying to reset the 'root' password by starting the mysqld daemon using the command mysqld --skip-grant-tables and then running the following lines in the mysql shell. mysql> UPDATE mysql.user SET Password=PASSWORD('MyNewPass') -> WHERE User='root'; mysql> FLUSH PRIVILEGES; Problem is when I try to run that MySQL string the daemon spits back a ERROR 1142 (42000): UPDATE command denied to user ''@'localhost' for table 'user' as if I didn't use the -u argument when I started the mysql shell, either though I did. Any help is muchly appreciated as I am lost at this point. :/

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  • Booting sequence. Ubuntu 12.04 installation and cohabitation with former OSes

    - by Stephane Rolland
    I am on the brink of installing Ubuntu 12.04 Precise Pengolin on the first primary partition of my hard-drive. (A day in History for me since I had always kept a MS windows at this first place). But I have some fears: This is my last computer available (In the past I used to have 2 or even 3 machines so I could always un/plug HDs for recovery operations and rescue) The current booting sequence is not straight forard. So as to explain the boot sequence let me briefly sum-up the history of this laptop computer. It was a dedicated Windows Vista computer. 1st and only Primary partition. Then I added Windows 7 (on the 2nd primary partition) letting the Windows Vista Boot Loader manage the boot sequence. Then I added Ubuntu 10.04 Lucid Lynx on the 1st sub-partition of the Extended Partitionm asking Grub to be the boot loader. But when I ask Grub to launch windows it launches the Vista BootLoader that manages the choice betzeen Vista and 7. So in theory Grub is on the MasterBootRecord - though I understand where the Vista BootLoader remains. Now, I will no longer use the Ubuntu 10.04 ( on extended partition) and also the Windows vista (on the first primary partition). I will install Ubuntu 12.04 on the First Primary, asking it to install a new bootloader. I want to keep the Windows 7 that is already on the Second Primary partition. And I want it to be loaded by the Ubuntu Boot loader(I don4t knoz zhich is included in this version)... And I am afraid the last point will not work.

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  • Windows Fax Server Leaves Documents in "Pending" Status

    - by Chris
    We are having an issue with Windows Fax Server on Windows Server 2008. Occasionally, the server will get into a state where after adding jobs to the outbox, they will simply remain at the pending status (without any attempt to send them). There is nothing in the event log mentioning a problem. It typically seems to enter the state after restarting the server or after no faxes have been sent for a while. The way to fix the issue has been to: Stop the Fax service Go into the modem properties in device manager and query modem Start the Fax service - at which point all the pending faxes in the outbox will send.

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  • Any way to fix alphabetical selection behavior in list widgets in Windows?

    - by KP
    In every version of Windows I've ever used (95 through Vista), the following apparent bug has been present in every list widget, whether drop-down, multi-select, or Explorer folder view: If you use the keyboard to select some item alphabetically, the selection gets "locked" on that item. If I have a list with the contents below, and I press D, then Delta will get selected. At this point, pressing A, B, or G will do nothing unless I first switch focus to another window or control, or remove focus by pressing Esc. If, at the beginning, I press G, then I can keep pressing G to cycle through the Gamma entries, but A, B, or D will do nothing unless I clear the focus. Alpha Beta Beta2 Delta Gamma Gamma2 Gamma3 I don't think I've seen this aggravating behavior on OS X, KDE, or Gnome shells, and I can't imagine why this behavior would be "by design." Does anyone know anything about this bug or how to get around it?

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  • Open-source training class/room/instructor resource management software?

    - by Kyle Eli
    We're looking to replace an internal system used for managing training classes with something a bit more robust. Needs to be open-source or have a license level that grants access to source, and needs to be ASP.net (C# preferred, but could live with VB.net) Ultimately, we'll need to be able to assign facilities and instructors, manage attendees, send notifications, and build calendar views. We'll also be integrating with our website to allow on-line sign-up and other things for attendees to manage on their own. We do expect to implement quite a bit of it in-house, but we'd like as broad of a base to start from as we can get. Still, just a really good web-based meeting-room reservation system might make a good enough starting point. In list form: Meeting/training resource management softwareASP.net (C# or VB.net)Source availableWe're expecting to have to modify the software to meet all of our requirements

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  • bash code in rc.local not excuting after bootup

    - by mrTomahawk
    Does anyone know why a system would not execute the script code within rc.local on bootup? I have a post configuration bash script that I want to run after the initial install of VMware ESX (Red Hat), and for some reason it doesn't seem to execute. I have the setup to log its start of execution and even its progress so that I can see how far it gets in case it fails at some point, but even when I look at that log, I am finding that didn't even started the execution of the script code. I already checked to see that script has execution permissions (755), what else should I be looking at? Here is the first few lines of my code: #!/bin/sh echo >> /tmp/configLog "" echo >> /tmp/configLog "Entering maintenance mode"

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  • How to make the run button run the project, not the file, in Eclipse

    - by Roy T.
    I'm using the Spring IDE, a variant of Eclipse to create a Java project. One big irritation I have is that when I press the run button Eclipse tries to run the current file, which usually fails because it doesn't have a main method. I've set up run configurations in the hope that would make the play button default to the run configuration instead of the current file, but that doesn't work either. Now to run my application correctly I have to press the little arrow next to play, select my favorite run configuration and then it works, this is only two extra clicks but it's tedious, the button is small and I feel like I shouldn't have to perform these extra steps. I mean what is the point of run configurations and projects if it still tries to run a file by default? Even more preferably I wouldn't even want to touch the mouse but just press Ctrl+F11, but this has the same behavior. All above applies to debugging as well btw. So my question is this: how do I make the run and debug buttons (and their short keys) default to the project's run configuration instead of to trying (and failing) to run only the current file? Much like it is in Visual Studio and other IDEs?

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  • Play Updated Retro Arcade Games for Free Courtesy of Microsoft

    - by Jason Fitzpatrick
    As part of a promotion for Internet Explorer 10, Microsoft comissioned Atari to update several classic retro games from the arcade and the Atari consoles. Fortunately for those of us looking for a retro gaming fix, you can play the games in any HTML5-enabled browser. While game play is really smooth on most games there are a few little quirks that using Internet Explorer 10 does take care of. First, if you’re not on IE10, you’ll see a little advertisement before you begin playing each game. Second, some games call on some of the new touch/motion variable functionality built into IE10 for the Windows 8 tablet experience and they’ll stall out when they reach the point in the game they need to call that variable. That said, we played quite a few games without any hiccups at all. Hit up the link below to play classics like Asteroids, Lunar Lander, Pong, Super Breakout, and more. Atari IE10 Promo Gallery [Atari] HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How What Are the Windows A: and B: Drives Used For?

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  • What to do with a Blowfish Key?

    - by Encoderer
    I just completed backing up 8 years of my Gmail using http://gmvault.org I selected the --encrypt option which uses Blowfish encryption. According to their site: Emails can be encrypted with the option -e --encrypt. With that option, the Blowfish encryption is used to crypt your emails and chats and the first time you activate it, a secret key is randomly generated and stored in $HOME/.gmvault/token.sec. Keep great care of the secret key as if you loose or delete it your stored emails won't be readable anymore !!! I'm using OSX Lion. I'm a software engineer but far from an encryption expert. What should I do with this key? It seems like leaving it where it is now (alongside the emails) sort of misses the point of encrypting them to begin with.

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  • DNS Provider/Domain Registrar

    - by Arcath
    I have a whole bunch of domains with my current web host and when i got the package i got it with a few gig of web space and a bunch of mysql databases but times have changed and now and i don't use the hosting im paying for, and i just my host as a DNS server to forward everything else where. The process of removing the host is going to require me to transfer all the domains to another package etc... which is going to cause disruption so my question is: Who is the best provider for DNS only? I don't want any space or mail just someone to hold the domains and let me set any DNS options I want (A/MX/CNAME records for everything, even possibly the ability to point my domains at my own DNS server).

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  • Pluscom MAC address shows up but "wireless unavailable"

    - by Luigi
    I've got a pluscom pci card plugged into my desktop and although the mac address shows up in network manager, it says "Wireless unavailable". I'm using Ubuntu 12.10 Gnome Shell Remix... edgar@edgarQuantal:~$ iwconfig eth0 no wireless extensions. lo no wireless extensions. wlan0 IEEE 802.11bg ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off edgar@edgarQuantal:~$ ifconfig eth0 Link encap:Ethernet HWaddr 6c:f0:49:02:1f:b8 inet addr:192.168.0.7 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::6ef0:49ff:fe02:1fb8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1425 errors:0 dropped:0 overruns:0 frame:0 TX packets:1393 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:995753 (995.7 KB) TX bytes:134079 (134.0 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:363 errors:0 dropped:0 overruns:0 frame:0 TX packets:363 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:40828 (40.8 KB) TX bytes:40828 (40.8 KB) It looks the same as the problem as here, seems quite complicated: http://ubuntuforums.org/showthread.php?t=1993226 Tried downloading the driver but i get this: "Unpacking firmware-ralink (from .../firmware-ralink_0.36_all.deb) ... dpkg: error processing /home/edgar/Downloads/firmware-ralink_0.36_all.deb (--install): trying to overwrite '/lib/firmware/rt2870.bin', which is also in package linux-firmware 1.95"

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  • Is NAN suitable for communicating that an invalid parameter was involved in a calculation?

    - by Arman
    I am currently working on a numerical processing system that will be deployed in a performance-critical environment. It takes inputs in the form of numerical arrays (these use the eigen library, but for the purpose of this question that's perhaps immaterial), and performs some range of numerical computations (matrix products, concatenations, etc.) to produce outputs. All arrays are allocated statically and their sizes are known at compile time. However, some of the inputs may be invalid. In these exceptional cases, we still want the code to be computed and we still want outputs not "polluted" by invalid values to be used. To give an example, let's take the following trivial example (this is pseudo-code): Matrix a = {1, 2, NAN, 4}; // this is the "input" matrix Scalar b = 2; Matrix output = b * a; // this results in {2, 4, NAN, 8} The idea here is that 2, 4 and 8 are usable values, but the NAN should signal to the receipient of the data that that entry was involved in an operation that involved an invalid value, and should be discarded (this will be detected via a std::isfinite(value) check before the value is used). Is this a sound way of communicating and propagating unusable values, given that performance is critical and heap allocation is not an option (and neither are other resource-consuming constructs such as boost::optional or pointers)? Are there better ways of doing this? At this point I'm quite happy with the current setup but I was hoping to get some fresh ideas or productive criticism of the current implementation.

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  • I have 5 days of vouchers for MS training… help me choose? [closed]

    - by Shyatic
    I'm a Microsoft centric guy (systems engineering side) and I already know the syntax of VB, have done VBScript pretty extensively and Excel VBA stuff as well. I want to make the leap into proper programming, probably with C# because it teaches me syntax I can use for Java if I want to go that route at some point. Since I have vouchers for 5 days of programming, and I can understand logic and understand how the .NET framework works... I would love to hear ideas on which MS Courses I should take. My primary focus is to work on web applications with web services that interact and do neat stuff... like for example, to create a 'chat' room or something interactive on the web. Or should I do something with HTML5/JS? I am really not sure... like I said, I want to work to make web services/sites. Not making the next Facebook mind you, but I'd like to work towards something in that spectrum on a much smaller scale. Please give me any advice, I'd like to book these classes asap Obviously getting involved with SQL and things that I will require would be important here.. you guys know better than me! Thanks!

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