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  • Event-based interaction between two custom classes

    - by Antenka
    Hello everybody. I have such problem: I have 2 custom components, which have their own nesting hierarchy ... One is container for another. I have to "familiarize them" with each other. The way I'm trying to achieve that is using global events (one side is firing and the other one is catching): Application.application.addEventListener("Hello", function (data:Event):void{ // .. some actions }); //and Application.application.dispatchEvent(new Event(Hello)); Everything is pretty good, but there's one thingy .. when I'm trying to catch the event, I can't access the class, who is catching it. E.g.: Container fires the event. Child caughts it. Then should be created the connection between container and it's child. BUT, the only thing I could acheive is passing a reference to the Container in the DynamicEvent. Is there any chance that I could access the child at the event-handler function. Or maybe there's more elegant way to solve this problem ... Any help would be greately appreciated :)

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  • Can't grab foreign key during after_create callback because it doesn't exist yet!

    - by Randy
    I have some models all linked together in memory (parent:child:child:child) and saved at the same time by saving the top-most parent. This works fine. I'd like to tap into the after_create callback of one of the children to populate a changelog table. One of the attributes I need to copy/push into the changelog table is the child's foreign_key to it's direct parent, but it doesn't exist at the time after_create fires!?! Without the after_create callback, I can look in the log and see that the child is being saved before it's parent (foreign key blank) then the parent is inserted... then the child is updated with the id from the parent. The child's after_create is firing at the right time, but it happens before Rails has had a chance to update the child with the foreign_key. Is there any way to force Rails to save such a linkage of models in a certain order? ie.parent, then child (parent foreign_key exists), then that child's child (again, foreign_key is accessible) etc. ?? If not, how would I have my routine fire after a record is created AND get the foreign_key? Seems a callback like this would be helpful: after_create_with_foreign_keys

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  • How do I add events to nested server controls? (ASP.Net)

    - by bert
    I am building a custom master page type control i.e. sort of like a datagrid but should be easier to add custom functionality into it. It's going great but part of the desired functionality is to have a paging control that switches on and off and part of that control would be a textbox that displays the current page number and on TextChanged redirects to the new page of the dataset. The problem I'm having is that technically the textbox which has its event fired is embedded in a control that is embedded in the control you actually put on the page sort of like Page  | Display Control  | Paging Control  | Textbox Buried all the way down there the event is not firing. Worse the postback javascript isn't even being written onto the page (Nothing on the page posts back so far this is the only bit that really needs to). I've been trawling around Google for quite a while now and picked up that I need to implement INamingContainer (done) and I need to add the control into the page's control tree (is Pre_Init too late for that? When's a good time to Add the Control to the page?) then the event should fire, apparently. But I've been unable to find an example of best practice on this there are quite a few near misses where people are having button angst but this isn't a button. So can anyone point me in the direction of getting a control embedded in a control embedded in a control added to a page to behave properly?

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  • jQuery jPicker colorpicker: How to convert from 8 digit (w Transparency) to standard 6 digit hex?

    - by Scott B
    I've got a jPicker installed and running fine; its a pretty sweet script. However, the value it returns to my input box is 8 digit hex. I need it to return 6 digit hex. Rather than post-process the 8 digit into 6, I'd rather just hack into the script and force 6 digit. Alternately, I'd be ok with hooking into the change event of the jPicker to intercept the value its sending to the input element and doing the conversion there just before it updates the input with the hex. Here's my code: $(function() { $('#myThemeColor').jPicker(); /* Bind jPicker to myThemeColor input */ $("#carousel").jCarouselLite({ btnNext: ".next", btnPrev: ".prev", visible: 6, speed: 700 }); And here's the code I'm working with to intercept the myThemeColor input's change event, but its not firing at all. $('#myThemeColor').change(function() { alert(this.val()); /* does not fire on any action */) if($(this).val().length == 8) { $(this).val(function(i, v) { return v.substring(0, 6); }); } });

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  • “Query cost (relative to the batch)” <> Query cost relative to batch

    - by Dave Ballantyne
    OK, so that is quite a contradictory title, but unfortunately it is true that a common misconception is that the query with the highest percentage relative to batch is the worst performing.  Simply put, it is a lie, or more accurately we dont understand what these figures mean. Consider the two below simple queries: SELECT * FROM Person.BusinessEntity JOIN Person.BusinessEntityAddress ON Person.BusinessEntity.BusinessEntityID = Person.BusinessEntityAddress.BusinessEntityID go SELECT * FROM Sales.SalesOrderDetail JOIN Sales.SalesOrderHeader ON Sales.SalesOrderDetail.SalesOrderID = Sales.SalesOrderHeader.SalesOrderID After executing these and looking at the plans, I see this : So, a 13% / 87% split ,  but 13% / 87% of WHAT ? CPU ? Duration ? Reads ? Writes ? or some magical weighted algorithm ?  In a Profiler trace of the two we can find the metrics we are interested in. CPU and duration are well out but what about reads (210 and 1935)? To save you doing the maths, though you are more than welcome to, that’s a 90.2% / 9.8% split.  Close, but no cigar. Lets try a different tact.  Looking at the execution plan the “Estimated Subtree cost” of query 1 is 0.29449 and query 2 its 1.96596.  Again to save you the maths that works out to 13.03% and 86.97%, round those and thats the figures we are after.  But, what is the worrying word there ? “Estimated”.  So these are not “actual”  execution costs,  but what’s the problem in comparing the estimated costs to derive a meaning of “Most Costly”.  Well, in the case of simple queries such as the above , probably not a lot.  In more complicated queries , a fair bit. By modifying the second query to also show the total number of lines on each order SELECT *,COUNT(*) OVER (PARTITION BY Sales.SalesOrderDetail.SalesOrderID) FROM Sales.SalesOrderDetail JOIN Sales.SalesOrderHeader ON Sales.SalesOrderDetail.SalesOrderID = Sales.SalesOrderHeader.SalesOrderID The split in percentages is now 6% / 94% and the profiler metrics are : Even more of a discrepancy. Estimates can be out with actuals for a whole host of reasons,  scalar UDF’s are a particular bug bear of mine and in-fact the cost of a udf call is entirely hidden inside the execution plan.  It always estimates to 0 (well, a very small number). Take for instance the following udf Create Function dbo.udfSumSalesForCustomer(@CustomerId integer) returns money as begin Declare @Sum money Select @Sum= SUM(SalesOrderHeader.TotalDue) from Sales.SalesOrderHeader where CustomerID = @CustomerId return @Sum end If we have two statements , one that fires the udf and another that doesn't: Select CustomerID from Sales.Customer order by CustomerID go Select CustomerID,dbo.udfSumSalesForCustomer(Customer.CustomerID) from Sales.Customer order by CustomerID The costs relative to batch is a 50/50 split, but the has to be an actual cost of firing the udf. Indeed profiler shows us : No where even remotely near 50/50!!!! Moving forward to window framing functionality in SQL Server 2012 the optimizer sees ROWS and RANGE ( see here for their functional differences) as the same ‘cost’ too SELECT SalesOrderDetailID,SalesOrderId, SUM(LineTotal) OVER(PARTITION BY salesorderid ORDER BY Salesorderdetailid RANGE unbounded preceding) from Sales.SalesOrderdetail go SELECT SalesOrderDetailID,SalesOrderId, SUM(LineTotal) OVER(PARTITION BY salesorderid ORDER BY Salesorderdetailid Rows unbounded preceding) from Sales.SalesOrderdetail By now it wont be a great display to show you the Profiler trace reads a *tiny* bit different. So moral of the story, Percentage relative to batch can give a rough ‘finger in the air’ measurement, but dont rely on it as fact.

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  • ASP.NET Routing not working on IIS 7.0

    - by Rick Strahl
    I ran into a nasty little problem today when deploying an application using ASP.NET 4.0 Routing to my live server. The application and its Routing were working just fine on my dev machine (Windows 7 and IIS 7.5), but when I deployed (Windows 2008 R1 and IIS 7.0) Routing would just not work. Every time I hit a routed url IIS would just throw up a 404 error: This is an IIS error, not an ASP.NET error so this doesn’t actually come from ASP.NET’s routing engine but from IIS’s handling of expressionless URLs. Note that it’s clearly falling through all the way to the StaticFile handler which is the last handler to fire in the typical IIS handler list. In other words IIS is trying to parse the extension less URL and not firing it into ASP.NET but failing. As I mentioned on my local machine this all worked fine and to make sure local and live setups match I re-copied my Web.config, double checked handler mappings in IIS and re-copied the actual application assemblies to the server. It all looked exactly matched. However no workey on the server with IIS 7.0!!! Finally, totally by chance, I remembered the runAllManagedModulesForAllRequests attribute flag on the modules key in web.config and set it to true: <system.webServer> <modules runAllManagedModulesForAllRequests="true"> <add name="ScriptCompressionModule" type="Westwind.Web.ScriptCompressionModule,Westwind.Web" /> </modules> </system.webServer> And lo and behold, Routing started working on the live server and IIS 7.0! This seems really obvious now of course, but the really tricky thing about this is that on IIS 7.5 this key is not necessary. So on my Windows 7 machine ASP.NET Routing was working just fine without the key set. However on IIS 7.0 on my live server the same missing setting was not working. On IIS 7.0 this key must be present or Routing will not work. Oddly on IIS 7.5 it appears that you can’t even turn off the behavior – setting runtAllManagedModuleForAllRequests="false" had no effect at all and Routing continued to work just fine even with the flag set to false, which is NOT what I would have expected. Kind of disappointing too that Windows Server 2008 (R1) can’t be upgraded to IIS 7.5. It sure seems like that should have been possible since the OS server core changes in R2 are pretty minor. For the future I really hope Microsoft will allow updating IIS versions without tying them explicitly to the OS. It looks like that with the release of IIS Express Microsoft has taken some steps to untie some of those tight OS links from IIS. Let’s hope that’s the case for the future – it sure is nice to run the same IIS version on dev and live boxes, but upgrading live servers is too big a deal to do just because an updated OS release came out. Moral of the story – never assume that your dev setup will work as is on the live setup. It took me forever to figure this out because I assumed that because my web.config on the local machine was fine and working and I copied all relevant web.config data to the server it can’t be the configuration settings. I was looking everywhere but in the .config file forever before getting desperate and remembering the flag when I accidentally checked the intellisense settings in the modules key. Never assume anything. The other moral is: Try to keep your dev machine and server OS’s in sync whenever possible. Maybe it’s time to upgrade to Windows Server 2008 R2 after all. More info on Extensionless URLs in IIS Want to find out more exactly on how extensionless Urls work on IIS 7? The check out  How ASP.NET MVC Routing Works and its Impact on the Performance of Static Requests which goes into great detail on the complexities of the process. Thanks to Jeff Graves for pointing me at this article – a great linked reference for this topic!© Rick Strahl, West Wind Technologies, 2005-2011Posted in IIS7  Windows  

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  • GCC 4.2.1 Compiling on Cygwin(Win7 64bit) for iPhone [closed]

    - by Kenneth Noland
    Hey This is going to take a long while to explain, but the short version is that I am currently attempting to compile the LLVM GCC frontend for ARMv7 to compile apps for the Cortex-A8(iPhone 3GS). I'm running into an error from LD when compiling libgcc(part of the gcc compilation process) that has been driving me mad! The command is this: /usr/llvm-gcc-4.2-2.8.source/build/./gcc/xgcc \ -B/usr/llvm-gcc-4.2_2.8.source/build/./gcc \ -B/usr/local/arm-apple-darwin/bin \ -B/usr/local/arm-apple-darwin/lib \ -isystem /usr/local/arm-apple-darwin/include \ -isystem /usr/local/arm-apple-darwin/sys-include \ -O2 -g -W -Wall -Wwrite-strings -wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -fno-inline -dynamiclib -nodefaultlibs -W1,-dead_strip \ -marm \ -install_name /usr/local/arm-apple-darwin/lib/libgcc_s.1.dylib \ -single_module -o ./libgcc_s.1.dylib.tmp \ -W1,-exported_symbols_list,libgcc/./libgcc.map -compatibility_version 1 -current_version 1.0 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc \ ... long list of .o files ... \ -lc And the result is typically a lot of undefined references to malloc, free, exit, etc. which typically indicate that libc is not getting compiled in. After going through the list of errors that ld is throwing, I see at the top that it is attempting to pull in /usr/lib/libc.a and complains that it is not the correct platform. Okay, that makes sense, so I spent 5 minutes on google and found an answer. Turns out that if I copy the libSystem.dylib and rename it to libc.dylib, that should solve the problem, but it doesn't. I couldn't find a copy of that file on my phone, so I pulled it directly from the SDK. I then get this strange error: ld64: in /usr/local/arm-apple-darwin/lib/libc.dylib, can't re-map file, errno=22 At this point, I did everything I could think of. I grabbed a fresh copy of my /usr/lib folder from my iphone and confirmed that libSystem.dylib(and libSystem.B.dylib) wasn't there. I unpacked the raw .ipsw package for iOS 4.2.1 and once again, I could not find a copy of libSystem.dylib there either. I unpacked the iPhoneSDK and MacOS SDK and I managed to find a copy of it in both, but that error just kept persisting. I copied libSystem.dylib, libSystem.B.dylib, tried all sorts of combinations of renaming to libc.dylib and still nothing but errors. I can't find a way to get it to recognize the file and link against it. I also tried linking against the libc.a located in the iphone SDK and that didn't work either. I checked what ./xgcc was firing off, and it was my freshly built copy of arm-apple-darwin-ld64 which should be fine. A little bit of background here. I built LLVM+Clang 2.8 with no errors, and I rebuilt the ODCCTools with some light modifications to get it to compile on Cygwin(I'll post my changes in a patch along with a tutorial if I can get this to work). I also grabbed the iphone-dev "includes" and "csu" project and those completed successfully, although there really is no point to them since I can't get it to link against crt0.a. I'm running out of ideas here. Can anyone help me out on this?

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  • Silverlight Cream for February 07, 2011 -- #1043

    - by Dave Campbell
    In this Issue: Roy Dallal, Kevin Dockx, Gill Cleeren, Oren Gal, Colin Eberhardt, Rudi Grobler, Jesse Liberty, Shawn Wildermuth, Kirupa Chinnathambi, Jeremy Likness, Martin Krüger(-2-), Beth Massi, and Michael Crump. Above the Fold: Silverlight: "A Circular ProgressBar Style using an Attached ViewModel" Colin Eberhardt WP7: "Isolated Storage" Jesse Liberty Lightswitch: "How To Create Outlook Appointments from a LightSwitch Application" Beth Massi Shoutouts: Gergely Orosz has a summary of his 4-part series on Styles in Silverlight: Everything a Developer Needs To Know From SilverlightCream.com: Silverlight Memory Leak, Part 2 Roy Dallal has part 2 of his memory leak posts up... and discusses the results of runnin VMMap and some hints on how to make best use of it. Using a Channel Factory in Silverlight (instead of adding a Service Reference). With cows. Kevin Dockx has a post up for those of you that don't like the generated code that comes about when adding a service reference, and the answer is a Channel Factory... and he has an example app in the post that populates a list of cows... honest ... check it out. Getting ready for Microsoft Silverlight Exam 70-506 (Part 4) Gill Cleeren has Part 4 of his deep-dive into studying for the Silverlight Certification exam. This time out he's got probably half a gazillion links for working with data... seriously! Sync unlimited instances of one Silverlight application How about a cross-browser sync of an unlimited number of instances of the same Silverlight app... Oren Gal has just that going on, and discusses his first two attempts and how he finally honed in on the solution. A Circular ProgressBar Style using an Attached ViewModel Wow... check out what Colin Eberhardt's done with the "Progress Bar" ... using an Attached View Model which he discussed in a post a while back... these are awesome! WP7 - Professional Audio Recorder Rudi Grobler discusses an audio recorder for WP7 that uses the NAudio audio library for not only the recording but visualization. Isolated Storage Jesse Liberty's got his 30th 'From Scratch' post up and this time he's talking about Isolated Storage. Learning OData? MSDN and Shawn Wildermuth has the videos for you! Shawn Wildermuth produced a couple series of videos for MSDN on OData: Getting Started and Consuming OData... get the link on Shawn's post. Creating Sample Data from a Class - Page 1 Kirupa Chinnathambi shows us how to use a schema of your own design in Blend... yet still have Blend produce sample data A Pivot-Style Data Grid without the DataGrid Jeremy Likness discusses the lack of an open-source grid with dynamic columns ... let him know if you've done one! ... and then he continues on to demonstrate his build-out of the same. Synchronize a freeform drawing and a real path creation Martin Krüger has a few new samples up in the Expression Gallery. This first is taking mouse movement in an InkPresenter and creating path statements from it in a canvas and playing them back. How to: use Storyboard completed behaviors Martin Krüger's next post is about Storyboards and firing one off the end of another, in Blend... so he ended up producing a behavior for doing that... and it's in the Expression Gallery How To Create Outlook Appointments from a LightSwitch Application Beth Massi has a new Lightswitch post up... her previous was email from Lightswitch... this is Outlook appointments... pretty darn cool. Quick run through of the WP7 Developer Tools January 2011 Michael Crump has a really good Quick look at the new WP7 Dev Tools that were released last week posted on his blog Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • ArchBeat Top 10 for December 2-8, 2012

    - by Bob Rhubart
    The Top 10 most-clicked items shared on the OTN ArchBeat Facebook page for the week of December 2-8, 2012 Configure Oracle SOA JMSAdatper to Work with WLS JMS Topics Another of the four posts published on Dec 4 by the Fusion Middleware A-Team blogger identified as "fip" illlustrates "how to configure the JMS Topic, the JmsAdapter connection factory, as well as the composite so that the JMS Topic messages will be evenly distributed to same composite running off different SOA cluster nodes without causing duplication." Web Service Example - Part 3: Asynchronous Part 3 in this series from the Oracle ADF Mobile blog looks at "firing the web service asynchronously and then filling in the UI when it completes." Denis says, "This can be useful when you have data on the device in a local store and want to show that to the user while the application uses lazy loading from a web service to load more data." Advanced Oracle SOA Suite Oracle Open World 2012 SOA Presentations Oracle SOA & BPM Partner Community blogger Juergen Kress shares a list of 13 SOA presentations delivered or moderated by Oracle SOA Product Management at OOW12 in San Francisco. Oracle WebLogic Server WLS Domain Browser My colleague Jeff Davies, a frequent speaker at OTN Architect Day events and a genuinely nice guy, emailed me last night with this message: "I just came across this app on Google Play. It allows WebLogic administrators to browse WLS 12c domain information. I installed it on my phone and tried it out. Works very fast." I'm an iPhone guy, but I'm perfectly comfortable taking Jeff at his word. The app is called WLS Domain Browser. Follow the link for more info from the Google Play site. Retrieve Performance Data from SOA Infrastructure Database Another of the four blog posts published on Dec 4 by very busy Oracle Fusion Middleware A-Team member "fip," this one offers "examples of some basic SQL queries you can run against the infrastructure database of Oracle SOA Suite 11G to acquire the performance statistics for a given period of time." How to Achieve OC4J RMI Load Balancing "Having returned from a customer who faced challenges with OC4J RMI load balancing, I felt there is still some confusion in the field [about] how OC4J RMI load balancing works," says the Oracle Fusion Middleware A-Team member known only as "fip." "Hence I decide to dust off an old tech note that I wrote a few years back and share it with the general public." From XaaS to Java EE – Which damn cloud is right for me in 2012? Oracle ACE Director Markus Eisele wrestles with a timely technical issue and shares his observations on several of the alternatives. Exalogic 2.0.1 Tea Break Snippets - Creating a ModifyJeOS VirtualBox "One of the main advantages of this is that Templates can be created away from the Exalogic Environment," explains The Old Toxophilist. (BTW: I had to look it up: a toxophilist is one who collects bows and arrows.) ADF Mobile - Implementing Reusable Mobile Architecture "Reusability was always a strong part of ADF," says Oracle ACE Director Andrejus Baranovskis. "The same high reusability level is supported now in ADF Mobile." The objective of this post is "to prove technically that [the] reusable architecture concept works for ADF Mobile." Using BPEL Performance Statistics to Diagnose Performance Bottlenecks Someone had a busy day… This post, one of four published on DeC 4 by a member of the Oracle Fusion Middleware A-Team identified only as "fip," offers details on how to "enable, retrieve and interpret the performance statistics, before the future versions provides a more pleasant user experience." Thought for the Day "If you're afraid to change something it is clearly poorly designed." — Martin Fowler Source: SoftwareQuotes.com

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  • Get Across The Table & Share Your Story By Megha Kapil !!!

    - by Nadiya
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 I am sure many of you are presently sitting across the table facing an industry expert to prove your mettle. Generally when you think of an interview; first image is of someone firing you with questions & you trying to hit all the shots right. We make an interview look like a court room where you are a victim & being prosecuted to apply for job: Why have you applied for this job, why do you think you are fit for this role, tell me your strengths, tell me your weaknesses, How, When Where, What..?   Interview is a process of knowing a candidate & his/her fitment in the system for interviewer; where as for interviewee its understanding the organization & his/her role. We have made this process of interview synonym to Q&A session. However, as a matter of fact the best scenario is when an interviewee initiates a conversation; which seldom happens. Why don’t we look at our Interview as a meeting to discover a prospect of lifetime, a process to showcase best of our skills, an opportunity to learn while exchanging meaningful dialogue with experts from industry?  We all get inspired when we get to know somebody’s achievements. We like to listen to interesting life stories of people which are positive & motivating. Do you have a story? Everyone does… It’s only about realizing & putting it together. If you want to win the game then the only trick is to “Drive the Conversation”. Tell the interviewer your story; mind you “An Interesting Story”. It’s a non frictional story where you are the “Hero/ Heroine” & you display your strengths to the best. Your story has to be fabricated with hard facts, incidences, experiences & exposures that fits the role you are interested to be in. Story of your success, that describes your knowledge & awareness about the latest trends in industry; solutions which reflect your logical approach towards problem solving. A story which exhibits clarity of your thoughts & ambition; demonstrates your enthusiasm, willingness to learn & passion. Preparation gives you confidence & genuine preparation never goes unnoticed. Organizations look for distinctive individuals; so don’t try to be someone else. Know yourself; be what you are, articulate your characteristics & craft your Unique Story Right Now!! /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-family:"Calibri","sans-serif"; mso-ascii- mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi- mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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  • Flash Actionscript 3.0 Game Projectile Creation

    - by Christian Basar
    I have been creating a side-scrolling Actionscript 3.0 game. In this game I want the Player to be able to shoot blow darts as weapons. I had some trouble getting the darts to be created in the right place (in front of the player), but eventually got it working with some help from this page (please look at it for background information on this problem): http://stackoverflow.com/questions/8031553/flash-actionscript-3-0-game-projectile-creation I got the darts to be created in the right place (near the player) and a 'movePlayerDarts()' function moves them. But I actually have a new problem. When the player moves after firing a dart, the dart tries to follow him! If the player jumps, the dart rises up. If the player moves to the left, the dart moves slightly to the left. Obviously, there is some code somewhere which is telling the darts to follow the player. I do not see how, unless the 'playerDartContainer' has something to do with that. But the container is always at position (0,0) and it does not move. Also, as a test I traced a dart's 'y' coordinate within the constantly-running 'movePlayerDarts()' function. As you can see, that function constantly moves the dart down the y axis by increasing its y-coordinate value. But when I jump, the 'y' coordinate being traced is never reduced, even though the dart clearly looks like it's rising! If anybody has any suggestions, I'd appreciate them! Here is the code I use to create the darts: // This function creates a dart public function createDart():void { if (playerDartContainer.numChildren <= 4) { // Play dart shooting sound sndDartShootIns.play(); // Create a new 'PlayerDart' object playerDart = new PlayerDart(); // Set the new dart's initial position and direction depending on the player's direction // Player's facing right if (player.scaleX == 1) { // Create dart in front of player's dart gun playerDart.x = player.x + 12; playerDart.y = player.y - 85; // Dart faces right, too playerDart.scaleX = 1; } // Player's facing left else if (player.scaleX == -1) { // Create dart in front of player's dart gun playerDart.x = player.x - 12; playerDart.y = player.y - 85; // Dart faces left, too playerDart.scaleX = -1; } playerDartContainer.addChild(playerDart); } } // End of 'createDart()' function This code is the EnterFrameHandler for the player darts: // In every frame, call 'movePlayerDarts()' to move the darts within the 'playerDartContainer' public function playerDartEnterFrameHandler(event:Event):void { // Only move the Player's darts if their container has at least one dart within if (playerDartContainer.numChildren > 0) { movePlayerDarts(); } } And finally, this is the code that actually moves all of the player's darts: // Move all of the Player's darts public function movePlayerDarts():void { for (var pdIns:int = 0; pdIns < playerDartContainer.numChildren; pdIns++) { // Set the Player Dart 'instance' variable to equal the current PlayerDart playerDartIns = PlayerDart(playerDartContainer.getChildAt(pdIns)); // Move the current dart in the direction it was shot. The dart's 'x-scale' // factor is multiplied by its speed (5) to move the dart in its correct // direction. If the 'x-scale' factor is -1, the dart is pointing left (as // seen in the 'createDart()' function. (-1 * 5 = -5), so the dart will go // to left at a rate of 5. The opposite is true for the right-ward facing // darts playerDartIns.x += playerDartIns.scaleX * 1; // Make gravity work on the dart playerDartIns.y += 0.7; //playerDartIns.y += 1; // What if the dart hits the ground? if (HitTest.intersects(playerDartIns, floor, this)) { playerDartContainer.removeChild(playerDartIns); } //trace("Dart x: " + playerDartIns.x); trace("Dart y: " + playerDartIns.y); } }

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  • SQL SERVER – Curious Case of Disappearing Rows – ON UPDATE CASCADE and ON DELETE CASCADE – T-SQL Example – Part 2 of 2

    - by pinaldave
    Yesterday I wrote a real world story of how a friend who thought they have an issue with intrusion or virus whereas the issue was really in the code. I strongly suggest you read my earlier blog post Curious Case of Disappearing Rows – ON UPDATE CASCADE and ON DELETE CASCADE – Part 1 of 2 before continuing this blog post as this is second part of the first blog post. Let me reproduce the simple scenario in T-SQL. Building Sample Data USE [TestDB] GO -- Creating Table Products CREATE TABLE [dbo].[Products]( [ProductID] [int] NOT NULL, [ProductDesc] [varchar](50) NOT NULL, CONSTRAINT [PK_Products] PRIMARY KEY CLUSTERED ( [ProductID] ASC )) ON [PRIMARY] GO -- Creating Table ProductDetails CREATE TABLE [dbo].[ProductDetails]( [ProductDetailID] [int] NOT NULL, [ProductID] [int] NOT NULL, [Total] [int] NOT NULL, CONSTRAINT [PK_ProductDetails] PRIMARY KEY CLUSTERED ( [ProductDetailID] ASC )) ON [PRIMARY] GO ALTER TABLE [dbo].[ProductDetails] WITH CHECK ADD CONSTRAINT [FK_ProductDetails_Products] FOREIGN KEY([ProductID]) REFERENCES [dbo].[Products] ([ProductID]) ON UPDATE CASCADE ON DELETE CASCADE GO -- Insert Data into Table USE TestDB GO INSERT INTO Products (ProductID, ProductDesc) SELECT 1, 'Bike' UNION ALL SELECT 2, 'Car' UNION ALL SELECT 3, 'Books' GO INSERT INTO ProductDetails ([ProductDetailID],[ProductID],[Total]) SELECT 1, 1, 200 UNION ALL SELECT 2, 1, 100 UNION ALL SELECT 3, 1, 111 UNION ALL SELECT 4, 2, 200 UNION ALL SELECT 5, 3, 100 UNION ALL SELECT 6, 3, 100 UNION ALL SELECT 7, 3, 200 GO Select Data from Tables -- Selecting Data SELECT * FROM Products SELECT * FROM ProductDetails GO Delete Data from Products Table -- Deleting Data DELETE FROM Products WHERE ProductID = 1 GO Select Data from Tables Again -- Selecting Data SELECT * FROM Products SELECT * FROM ProductDetails GO Clean up Data -- Clean up DROP TABLE ProductDetails DROP TABLE Products GO My friend was confused as there was no delete was firing over ProductsDetails Table still there was a delete happening. The reason was because there is a foreign key created between Products and ProductsDetails Table with the keywords ON DELETE CASCADE. Due to ON DELETE CASCADE whenever is specified when the data from Table A is deleted and if it is referenced in another table using foreign key it will be deleted as well. Workaround 1: Design Changes – 3 Tables Change the design to have more than two tables. Create One Product Mater Table with all the products. It should historically store all the products list in it. No products should be ever removed from it. Add another table called Current Product and it should contain only the table which should be visible in the product catalogue. Another table should be called as ProductHistory table. There should be no use of CASCADE keyword among them. Workaround 2: Design Changes - Column IsVisible You can keep the same two tables. 1) Products and 2) ProductsDetails. Add a column with BIT datatype to it and name it as a IsVisible. Now change your application code to display the catalogue based on this column. There should be no need to delete anything. Workaround 3: Bad Advices (Bad advises begins here) The reason I have said bad advices because these are going to be bad advices for sure. You should make necessary design changes and not use poor workarounds which can damage the system and database integrity further. Here are the examples 1) Do not delete the data – well, this is not a real solution but can give time to implement design changes. 2) Do not have ON CASCADE DELETE – in this case, you will have entry in productsdetails which will have no corresponding product id and later on there will be lots of confusion. 3) Duplicate Data – you can have all the data of the product table move to the product details table and repeat them at each row. Now remove CASCADE code. This will let you delete the product table rows without any issue. There are so many things wrong this suggestion, that I will not even start here. (Bad advises ends here)  Well, did I miss anything? Please help me with your suggestions. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • XNA Multiplayer Games and Networking

    - by JoshReuben
    ·        XNA communication must by default be lightweight – if you are syncing game state between players from the Game.Update method, you must minimize traffic. That game loop may be firing 60 times a second and player 5 needs to know if his tank has collided with any player 3 and the angle of that gun turret. There are no WCF ServiceContract / DataContract niceties here, but at the same time the XNA networking stack simplifies the details. The payload must be simplistic - just an ordered set of numbers that you would map to meaningful enum values upon deserialization.   Overview ·        XNA allows you to create and join multiplayer game sessions, to manage game state across clients, and to interact with the friends list ·        Dependency on Gamer Services - to receive notifications such as sign-in status changes and game invitations ·        two types of online multiplayer games: system link game sessions (LAN) and LIVE sessions (WAN). ·        Minimum dev requirements: 1 Xbox 360 console + Creators Club membership to test network code - run 1 instance of game on Xbox 360, and 1 on a Windows-based computer   Network Sessions ·        A network session is made up of players in a game + up to 8 arbitrary integer properties describing the session ·        create custom enums – (e.g. GameMode, SkillLevel) as keys in NetworkSessionProperties collection ·        Player state: lobby, in-play   Session Types ·        local session - for split-screen gaming - requires no network traffic. ·        system link session - connects multiple gaming machines over a local subnet. ·        Xbox LIVE multiplayer session - occurs on the Internet. Ranked or unranked   Session Updates ·        NetworkSession class Update method - must be called once per frame. ·        performs the following actions: o   Sends the network packets. o   Changes the session state. o   Raises the managed events for any significant state changes. o   Returns the incoming packet data. ·        synchronize the session à packet-received and state-change events à no threading issues   Session Config ·        Session host - gaming machine that creates the session. XNA handles host migration ·        NetworkSession properties: AllowJoinInProgress , AllowHostMigration ·        NetworkSession groups: AllGamers, LocalGamers, RemoteGamers   Subscribe to NetworkSession events ·        GamerJoined ·        GamerLeft ·        GameStarted ·        GameEnded – use to return to lobby ·        SessionEnded – use to return to title screen   Create a Session session = NetworkSession.Create(         NetworkSessionType.SystemLink,         maximumLocalPlayers,         maximumGamers,         privateGamerSlots,         sessionProperties );   Start a Session if (session.IsHost) {     if (session.IsEveryoneReady)     {        session.StartGame();        foreach (var gamer in SignedInGamer.SignedInGamers)        {             gamer.Presence.PresenceMode =                 GamerPresenceMode.InCombat;   Find a Network Session AvailableNetworkSessionCollection availableSessions = NetworkSession.Find(     NetworkSessionType.SystemLink,       maximumLocalPlayers,     networkSessionProperties); availableSessions.AllowJoinInProgress = true;   Join a Network Session NetworkSession session = NetworkSession.Join(     availableSessions[selectedSessionIndex]);   Sending Network Data var packetWriter = new PacketWriter(); foreach (LocalNetworkGamer gamer in session.LocalGamers) {     // Get the tank associated with this player.     Tank myTank = gamer.Tag as Tank;     // Write the data.     packetWriter.Write(myTank.Position);     packetWriter.Write(myTank.TankRotation);     packetWriter.Write(myTank.TurretRotation);     packetWriter.Write(myTank.IsFiring);     packetWriter.Write(myTank.Health);       // Send it to everyone.     gamer.SendData(packetWriter, SendDataOptions.None);     }   Receiving Network Data foreach (LocalNetworkGamer gamer in session.LocalGamers) {     // Keep reading while packets are available.     while (gamer.IsDataAvailable)     {         NetworkGamer sender;          // Read a single packet.         gamer.ReceiveData(packetReader, out sender);          if (!sender.IsLocal)         {             // Get the tank associated with this packet.             Tank remoteTank = sender.Tag as Tank;              // Read the data and apply it to the tank.             remoteTank.Position = packetReader.ReadVector2();             …   End a Session if (session.AllGamers.Count == 1)         {             session.EndGame();             session.Update();         }   Performance •        Aim to minimize payload, reliable in order messages •        Send Data Options: o   Unreliable, out of order -(SendDataOptions.None) o   Unreliable, in order (SendDataOptions.InOrder) o   Reliable, out of order (SendDataOptions.Reliable) o   Reliable, in order (SendDataOptions.ReliableInOrder) o   Chat data (SendDataOptions.Chat) •        Simulate: NetworkSession.SimulatedLatency , NetworkSession.SimulatedPacketLoss •        Voice support – NetworkGamer properties: HasVoice ,IsTalking , IsMutedByLocalUser

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  • Web Service Example - Part 3: Asynchronous

    - by Denis T
    In this edition of the ADF Mobile blog we'll tackle part 3 of our Web Service examples.  In this posting we'll take a look at firing the web service asynchronously and then filling in the UI when it completes.  This can be useful when you have data on the device in a local store and want to show that to the user while the application uses lazy loading from a web service to load more data. Getting the sample code: Just click here to download a zip of the entire project.  You can unzip it and load it into JDeveloper and deploy it either to iOS or Android.  Please follow the previous blog posts if you need help getting JDeveloper or ADF Mobile installed.  Note: This is a different workspace than WS-Part2 What's different? In this example, when you click the Search button on the Forecast By Zip option, now it takes you directly to the results page, which is initially blank.  When the web service returns a second or two later the data pops into the UI.  If you go back to the search page and hit Search it will again clear the results and invoke the web service asynchronously.  This isn't really that useful for this particular example but it shows an important technique that can be used for other use cases. How it was done 1)  First we created a new class, ForecastWorker, that implements the Runnable interface.  This is used as our worker class that we create an instance of and pass to a new thread that we create when the Search button is pressed inside the retrieveForecast actionListener handler.  Once the thread is started, the retrieveForecast returns immediately.  2)  The rest of the code that we had previously in the retrieveForecast method has now been moved to the retrieveForecastAsync.  Note that we've also added synchronized specifiers on both these methods so they are protected from re-entrancy. 3)  The run method of the ForecastWorker class then calls the retrieveForecastAsync method.  This executes the web service code that we had previously, but now on a separate thread so the UI is not locked.  If we had already shown data on the screen it would have appeared before this was invoked.  Note that you do not see a loading indicator either because this is on a separate thread and nothing is blocked. 4)  The last but very important aspect of this method is that once we update data in the collections from the data we retrieve from the web service, we call AdfmfJavaUtilities.flushDataChangeEvents().   We need this because as data is updated in the background thread, those data change events are not propagated to the main thread until you explicitly flush them.  As soon as you do this, the UI will get updated if any changes have been queued. Summary of Fundamental Changes In This Application The most fundamental change is that we are invoking and handling our web services in a background thread and updating the UI when the data returns.  This allows an application to provide a better user experience in many cases because data that is already available locally is displayed while lengthy queries or web service calls can be done in the background and the UI updated when they return.  There are many different use cases for background threads and this is just one example of optimizing the user experience and generating a better mobile application. 

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  • Problems sending SMTP email to large systems such as Gmail

    - by Martel
    I maintain a mail server. Recently messages sent to valid recipients on gmail, yahoo, and now roadrunner email addresses are bounced with similar messages: Here's one from gmail: The message, sent by [email protected], can not be delivered to following recipient(s): *recipient*@gmail.com There was a fatal SMTP error. Fatal DNS error: exchanger alt4.gmail-smtp-in.l.google.com. does not exist Delivery History Follows: [DLVR 000020 19-12-12 14:21:21] Delivering item 5573 [DLVR 000020 19-12-12 14:21:21] Resolving MX records for domain gmail.com [DLVR 000020 19-12-12 14:21:21] Retrieved 5 MX records for domain gmail.com [DLVR 000020 19-12-12 14:21:21] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:21:33] Host gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:21:33] Will try next exchanger [DLVR 000020 19-12-12 14:21:33] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger alt1.gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:21:45] Host alt1.gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:21:45] Will try next exchanger [DLVR 000020 19-12-12 14:21:45] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger alt2.gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:21:57] Host alt2.gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:21:57] Will try next exchanger [DLVR 000020 19-12-12 14:21:57] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger alt3.gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:22:09] Host alt3.gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:22:09] Will try next exchanger [DLVR 000020 19-12-12 14:22:09] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger alt4.gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:22:21] Host alt4.gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:22:21] Fatal error - host alt4.gmail-smtp-in.l.google.com. does not exist. Will bounce... [DLVR 000020 19-12-12 14:22:21] Bouncing to sender using bounce address [email protected]... Sometimes these emails get through, other times not. I'm at a loss to explain it.

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  • Legacy VB6 application under Win7 SQL error

    - by Shial
    We have a rather unfortunate legacy application at work, written originally in VB6 it predates anybody in our IT department by at least 5 years. We have a contracted developer for ongoing maintenance and where he can he rewrites sections over into .NET code (Not sure about his techniques here, this is a side job for his regular work as an IBM engineer) the application works fine (such as it is) under windows XP. We have only a couple of Windows 7 machines mainly for testing and this application seems to run into a wall. Things like the background not loading and SQL errors. This is even running under administrator. Running an SQL trace from the ODBC control panel shows several interesting things. It makes a connection to the database successfully initially where it runs a query to determine if it is running the correct version. This query works fine. 558-1af0 ENTER SQLExecDirectW HSTMT 0x020D7548 WCHAR * 0x04C8F0F0 [ 115] "SELECT count(*) c FROM tblSoftwareVersion WHERE fldSoftwareVersion = '123456' AND fldSoftwareName = 'Application.VB'" SDWORD 115 BMS 558-1af0 EXIT SQLExecDirectW with return code 1 (SQL_SUCCESS_WITH_INFO) HSTMT 0x020D7548 WCHAR * 0x04C8F0F0 [ 115] "SELECT count(*) c FROM tblSoftwareVersion WHERE fldSoftwareVersion = '123456' AND fldSoftwareName = 'Application.VB'" SDWORD 115 It then seems to drop its connection and can't find the ODBC connection despite the fact its connecting to the same DB. From the trace it looks like it configures the connection then it starts firing off SQLFreeStmt to unbind and close out then when in the application and it tries to do its thing there is no connection. 558-1af0 ENTER SQLFreeStmt HSTMT 0x020D7548 UWORD 2 <SQL_UNBIND> BMS 558-1af0 EXIT SQLFreeStmt with return code 0 (SQL_SUCCESS) HSTMT 0x020D7548 UWORD 2 <SQL_UNBIND> Then this happens when I try to do something that pulls data 558-1af0 ENTER SQLDriverConnectW HDBC 0x020DDA00 HWND 0x00000000 WCHAR * 0x73EF8634 [ -3] "******\ 0" SWORD -3 WCHAR * 0x73EF8634 SWORD -3 SWORD * 0x00000000 UWORD 0 <SQL_DRIVER_NOPROMPT> BMS 558-1af0 EXIT SQLDriverConnectW with return code -1 (SQL_ERROR) HDBC 0x020DDA00 HWND 0x00000000 WCHAR * 0x73EF8634 [ -3] "******\ 0" SWORD -3 WCHAR * 0x73EF8634 SWORD -3 SWORD * 0x00000000 UWORD 0 <SQL_DRIVER_NOPROMPT> DIAG [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) Nearly all of my searching on this issue comes up with programming issues where the connection string has a problem. The only thing that is different in this particular scenario though is Windows 7, I know the connection string is fine since it works on the XP machines. The VB components are supposed to be still functional under Win7. My computer is running 32 bit win7 and my VP is running Win7 64 bit and both have the same problem so that can be ruled out. I have already tried reinstalling the SQL Native Client and the VB runtime as well as the application in question. Hopefully I can find a solution and not have to resort to using the XP VM.

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  • Problems migrating an EBS backed instance over AWS Regions

    - by gshankar
    Note: I asked this question on the EC2 forums too but haven't received any love there. Hopefully the ServerFault community will be more awesome. The new AWS Sydney region opening up is something that we've been waiting for for a long time but I'm having a lot of trouble migrating our instances over from N. California. I managed to migrate 1 instance over using CloudyScripts to move a snapshot and then firing up a new instance in the Sydney region. This was a very new instance so both the source and destination were running on a Ubuntu 12.04 LTS server and I had no issues there. However, the rest of our instances are all Ubuntu 10.04 LTS and with these, I'm having a lot of problems. I've tried following: 1- following the AWS whitepaper on moving instances which was given to us at the recent Customer Appreciation Day in Sydney where the new region was launched. The problem with this approach was with the last step (Step 19) here you register the image: ec2-register -s snap-0f62ec3f -n "Wombat" -d "migrated Wombat" --region ap-southeast-2 -a x86_64 --kernel aki-937e2ed6 --block-device-mapping "/dev/sdk=ephemeral0" I keep getting this error: Client.InvalidAMIID.NotFound: The AMI ID 'ami-937e2ed6' does not exist which I think is due to the kernel_id not existing in the Sydney region? 2- Using CloudyScripts to move a snapshot and then creating a new volume and attaching to a new instance in Sydney This results in the instance just hanging on boot and failing the status checks. I can't SSH in or look at the server log I suspect that my issue is with finding the right kernel_id for the volume in the new region. However I can't seem to work out how to go about finding this kernel_id, the ones I've tried (from the original instance) don't result in the Client.InvalidAMIID.NotFound: The AMI ID 'ami-937e2ed6' error and any other kernel_id just won't boot. I've tried both 12.04 and 10.04 versions of Ubuntu. Nothing seems to work, I've been banging my head against a wall for a while now, please help! New (broken) instance i-a1acda9b ami-9b8611a1 aki-31990e0b Source instance i-08a6664e ami-b37e2ef6 aki-937e2ed6 p.s. I also tried following this guide on updating my Ubuntu LTS version to 12.04 before doing the migration but it didn't seem to work either, still getting stuck on updating the kernel_id http://ubuntu-smoser.blogspot.com.au/2010/04/upgrading-ebs-instance.html

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  • SQL Clustering on Hyper V - is a cluster within a cluster a benefit.

    - by Chris W
    This is a re-hash of a question I asked a while back - after a consultant has come in firing ideas in to other teams in the department the whole issue has been raised again hence I'm looking for more detailed answers. We're intending to set-up a multi-instance SQL Cluster across a number of physical blades which will run a variety of different systems across each SQL instance. In general use there will be one virtual SQL instance running on each VM host. Again, in general operation each VM host will run on a dedicated underlying blade. The set-up should give us lots of flexibility for maintenance of any individual VM or underlying blade with all the SQL instances able to fail over as required. My original plan had been to do the following: Install 2008 R2 on each blade Add Hyper V to each blade Install a 2008 R2 VM to each blade Within the VMs - create a failover cluster and then install SQL Server clustering. The consultant has suggested that we instead do the following: Install 2008 R2 on each blade Add Hyper V to each blade Install a 2008 R2 VM to each blade Create a cluster on the HOST machines which will host all the VMs. Within the VMs - create a failover cluster and then install SQL Server clustering. The big difference is the addition of step 4 whereby we cluster all of the guest VMs as well. The argument is that it improves maintenance further since we have no ties at all between the SQL cluster and physical hardware. We can in theory live migrate the guest VMs around the hosts without affecting the SQL cluster at all so we for routine maintenance physical blades we move the SQL cluster around without interruption and without needing to failover. It sounds like a nice idea but I've not come across anything on the internet where people say they've done this and it works OK. Can I actually do the live migrations of the guests without the SQL Cluster hosted within them getting upset? Does anyone have any experience of this set up, good or bad? Are there some pros and cons that I've not considered? I appreciate that mirroring is also a valuable option to consider - in this case we're favouring clustering since it will do the whole of each instance and we have a good number of databases. Some DBs are for lumbering 3rd party systems that may not even work kindly with mirroring (and my understanding of clustering is that fail overs are completely transparent to the clients). Thanks.

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  • Recovering from backup without original install media

    - by KGendron
    A machine from my old job had a complete hard drive failure. I have backups but I'm running into severe problems restoring from them. The only install media was a secondary restore partition on the system's hard drive. I hate whoever came up with that idea more than i can possibly express with words. I spent several days trying to recover the disk - it is pretty well shot and none of my best tricks could even get it to show up in the bios/ The machine that broke is an hp with xp media center edition on it (I don't know why either). The backups were created using the default windows backup tool - I have .bfk file on an external hardrive that i am trying to restore from. I've replaced the hard drive. My home machine is running windows 7 64bit and i'm trying to use it as a platform to restore to the other disk. I downloaded the window 7 nt-restore utility, however no matter what i do it restores to my C drive rather than the specified drive. Fortunately win7 security settings prevented it from being a complete disaster - but still not a happy thing. I tried firing up the xp virtual machine. I can browse to the backups but it says they are invalid and refuse to let me view/ continue with the restore. I tried installing XP to an extra harddrive on my machine - however it bluescreens on me during the install process and I cry. I tried installing xp pro to the new drive and attempted to restore over it, it of course blackscreened on me as that was a stupid idea. I made two partitions on the new hard drive (Apparently the bios on this accursed piece of junk doesn't allow hd partitions larger than 200G anyways and thus fails 40 minutes into the install with an ever-descriptive "Disk Read Error". Guess how i spent last weekend? My last idea was to install xp pro to the second partition and then use it to restore from backup to the first. After the first restart it gives me the error "Windows could not start because of a computer disk hardware configuration problem. Could not read from the selected boot disk. Check boot path and disk hardware". My brain made one of those bad hard drive clicky noises. I've tried several boot disks but they don't seem to work. If anyone has a link to a good one it would be greatly appreciated. Anyone have any more ideas? - I really hate asking on what seems like such a simple issue but i am quite literally at my wit's end. Thanks - and sorry for the really long post.

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  • HR According to Batman

    - by D'Arcy Lussier
    Any idea who that guy is running alongside the Caped Crusader? That’s Nightwing, but you may know him as Robin…well, the first Robin anyway. There were actually like 5 Robin’s according to Wikipedia: Dick Grayson, the original, who’s parents were circus performers killed by a gangster. Jason Todd, who was caught trying to steal tires off of the Batmobile. Tim Drake, who saw Dick’s parents die and figured out who Batman and Robin were. and a few others that get into recent time travel/altered reality storylines. What does this have to do with HR? Well, it somewhat ties in with an article by Alex Papadimoulis from 2008. In the article he talks about the “Cravath System”. The Craveth system was developed by a law firm called Cravath, Swaine & Moore back in the 19th century. In a nutshell, they believed in hiring the best and brightest straight out of school. These aspiring lawyers would then begin a fight for survival in the firm, with the strong surviving. In what’s termed the “Up and Out” rule, employees needed to be promoted within 3 years or leave the company. They should achieve partner within 7 – 8 years and no later than 10 after initially coming on board (read all about the system on Wikipedia here). Back to Alex’s article, he quotes from a book published in 1947 about the lawfirm: Under the “Cravath system” of taking a substantial number of men annually and keeping a current constantly moving up in the office, and its philosophy of tenure, men are constantly leaving… it is often difficult to keep the best men long enough to determine whether they shall be made partners, for Cravath-trained men are always in demand, usually at premium salaries. And so we see a pattern forming here: 1. Hire a whole whack of smart college graduates 2. Put them to work 3. The ones that stick around should move up the ladder. The ones that don’t stick around served the company well and left to expound the quality of the Cravath firm. Those that didn’t fall into either of those categories were just let go. There’s some interesting undercurrents to these ideas. If you stick around, you better keep your feet moving! I was at a Microsoft shindig a few months back, and was talking to a Microsoft employee. He shared that at MS you have 5 years to achieve a “senior” position within the company. Once you hit that mark, you can stay there for the rest of your career (he told about a guy who’s a “senior” developer and has been for the last 20+ years working on audio drivers for Windows), but you *must* hit that mark within the timeframe. What we see with Microsoft is Cravath’s system in action, whether intentional or not: bring in smart young people and see which ones stick. You need to give people something to work towards. Saying “You must reach this level or else!” is one way to look at it. The other way is to see achieving a higher rank in the organization as something for ambitious employees to reach towards. It’s important for an organization to always have the next generation of executives waiting in the wings, and unless you’re encouraging that early on you may find yourself in a position of needing to fill positions that nobody has been working towards. Now, you might suggest that this isn’t that big of a deal because you could just hire someone from outside the organization, but the Cravath system holds to the tenet of promoting internally; develop your own talent, since your business is the best place for the future leadership to learn teh business from. It’s OK for people to quit. Alex’s article really drives this point home, but its worth noting here also: its OK for your people to quit. In fact its inevitable…and more inevitable that it’ll be good people that leave. Some will stay and work towards the internal awards of promotion, but a number will get experience, serve the organization well, and then move on to something else. This should be expected and treated as a natural business occurrence. The idea of an alumni of an organization begins to come into play here: “That guy used to work for <insert company here>”. There’s a benefit in that: those best and brightest will be drawn to your organization and your reputation will permeate your market through former staff that are sought after because of how well you nurtured them. The Batman Hook All of this brings us back to Batman and his HR practice: when Dick decided he’d had enough of the Robin schtick, he quit and became his own…but he was always associated with Batman and people understood where his training had come from. To the Dark Knight’s credit, he continued training partners under the Robin brand. Luckily he didn’t have to worry about firing any of them (the ship sort of sails when you reveal a secret identity), although there was that unfortunate “quitting” of the second Robin when the Joker blew him up…but regardless, we see the Cravath system at work: bring in talent, expect great things, and be ok with whatever they decide for their careers. It’s an interesting way to approach HR, and luckily for us our business isn’t as dangerous or over-the-top as the caped crusader’s.

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  • Simple Scripting for your Exalogic Storage

    - by Trond Strømme
    As part of my job in Oracle ACS (Advanced Customer Services) I'm handling lots of different systems and customers. Among the recent systems I worked with have been Oracle's Exalogic engineered systems. One of the things I'd never had much exposure to as a system developer/architect/middleware guy/Java dude has been storage; outside of consuming it for my photography needs.. Well, I'm always ready for a new challenge... I'd downloaded the 7000 series storage simulator when it was released in the good old Sun days, found it fun and instructive to play around with, but as I never touched storage in any way (besides consuming it..) I forgot about it. A couple of years ago when I started working with Exalogic engineered systems it again came into light as an invaluable learning and testing tool for the embedded storage in an Exalogic;  Oracle's Sun ZFS Storage 7320 Appliance.  aaaanyway... I've been "booted" into a part-time role as the interim storage/system admin/middleware/Java guy for a client and found I needed to create the occasional report or summary or whatever.. of what's using the storage in the 7320 (as default configured for an Exalogic, 40T of disk in a mirrored configuration, yielding 18T of actual space.) Reading the nice documentation and some articles on the Oracle Technology Network I saw great possibilities with the embedded ECMAScript3/JavaScript engine in the 7000 series.  In my personal opinion anyone who's dealing with Exalogic administration, or exposed to any of the 7000 series of storage appliances and servers that Oracle offers should have a VirtualBox instance of it kicking around. For development and testing it's a fantastic tool. (It can save you from explaining (most) of the embarrassing FAILS you can do if you test something in a production system to your management...) So download, and install.  A small sidestep, if after firing up the 7000 series simulator in VirtualBox you've forgotten what it's IP address is, the following will sort you out if you log in directly via the running VirtualBox VM. So in my case I can ssh to 192.168.56.101 or point a browser to https://192.168.56.101:215 to log into the storage appliance. One simple way of executing a script on the 7320 is to ssh to the device and redirecting a file with the script in it to ssh. ssh [email protected] < myscript.js One question I got from my client and the people who will take over the systems was: "how can we see the quotas and allocations for all projects/shares in one easy go so we don't have to go navigating around in the BUI for all the hundreds of shares the 7320 is hosting just to check if anything is running dry?" Easy! JavaScript time, VirtualBox and emacs! //NOTE! this script is available 'as is' It has ben run on a couple of 7320's, (running 2010.08.17.3.0,1-1.25 & // 2011.04.24.1.0,1-1.8) a 7420 and the VB image, but I personally //offer no guarantee whatsoever that it won't make your server topple, catch fire or in any way go pear shaped.. //run at your own risk or learn from my code and or mistakes.. script run('cd /'); run('shares'); //get all projects: proj = list(); function spaceToGig(bytes){ return bytes/1073741824; //convert bytes to GB } function fullInPercent(quota, space_data){ tmp = (space_data/quota)*100; return tmp; } //print header, slightly good looking printf(" %s/%-15s %8s(GB) %7s(GB) %5s(GB) %7s(GB) %3s\n","Project", "Share","Quota","Ref", "Snap", "Total","%full"); printf("-------------------------------------------------------------------------------\n") //for each project, get all shares. check for quota and calculate percentage and human readable figures.. for (i=0;i<proj.length;i++){ run('select ' + proj[i]); //get all shares for a project var pshares = list(); //for each share get quota properties for (j=0;j<pshares.length;j++){ run('select ' + pshares[j]); quota = get('quota'); //properties associated with a share or inherited from a project spaceData = get('space_data'); spaceSnap = get('space_snapshots'); spaceTotal = get('space_total'); if(quota>0){ //has quota printf(" %s/%-15s \t%4.2fGB\t%.2fGB\t%.2fGB\t%.2fGB\t%5.2f%%\n",proj[i], pshares[j],spaceToGig(quota),spaceToGig(spaceData),spaceToGig(spaceSnap),spaceToGig(spaceTotal),fullInPercent(quota,spaceTotal)); }else{ //no quota printf(" %s/%-15s \t%8s\t%.2fGB\t%.2fGB\t%.2fGB\t%s\n",proj[i],pshares[j], "N/A", spaceToGig(spaceData),spaceToGig(spaceSnap),spaceToGig(spaceTotal),"N/A"); } run('cd ..'); } run('done'); } The resulting output should look something like this: Project/Share Quota(GB) Ref(GB) Snap(GB) Total(GB) %full ------------------------------------------------------------------------------- ACSExalogicSystem/domains N/A 0.04GB 0.00GB 0.04GB N/A ACSExalogicSystem/logs N/A 0.01GB 0.00GB 0.01GB N/A ACSExalogicSystem/nodemgrs N/A 0.00GB 0.00GB 0.00GB N/A ACSExalogicSystem/stores N/A 0.04GB 0.00GB 0.04GB N/A ***_dev/FMW_***_1 133GB 4.24GB 0.01GB 4.25GB 3.19% ***_dev/FMW_***_2 N/A 4.25GB 0.01GB 4.26GB N/A ***_dev/applications 10GB 0.00GB 0.00GB 0.00GB 0.00% ***_dev/domains 50GB 10.75GB 3.55GB 14.30GB 28.61% ***_dev/logs 20GB 0.32GB 0.01GB 0.33GB 1.66% ***_dev/softwaredepot 20GB 4.15GB 0.00GB 4.15GB 20.73% ***_dev/stores 20GB 0.01GB 0.00GB 0.01GB 0.05% ###_dev/FMW_###_1 400GB 17.63GB 0.12GB 17.75GB 4.44% ###_dev/applications N/A 0.00GB 0.00GB 0.00GB N/A ###_dev/domains 120GB 14.21GB 5.53GB 19.74GB 16.45% ###_dev/logs 15GB 0.00GB 0.00GB 0.00GB 0.00% ###_dev/softwaredepot 250GB 73.55GB 0.02GB 73.57GB 29.43% …snip My apologies if the output is a bit mis-aligned here and there, I only bothered making it look good, not perfect :/ I also removed some of the project names (*,#)

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  • Key Windows Phone Development Concepts

    - by Tim Murphy
    As I am doing more development in and out of the enterprise arena for Windows Phone I decide I would study for the 70-599 test.  I generally take certification tests as a way to force me to dig deeper into a technology.  Between the development and studying I decided it would be good to put a post together of key development features in Windows Phone 7 environment.  Contrary to popular belief the launch of Windows Phone 8 will not obsolete Windows Phone 7 development.  With the launch of 7.8 coming shortly and people who will remain on 7.X for the foreseeable future there are still consumers needing these apps so don’t throw out the baby with the bath water. PhoneApplicationService This is a class that every Windows Phone developer needs to become familiar with.  When it comes to application state this is your go to repository.  It also contains events that help with management of your application’s lifecycle.  You can access it like the following code sample. 1: PhoneApplicationService.Current.State["ValidUser"] = userResult; DeviceNetworkInformation This class allows you to determine the connectivity of the device and be notified when something changes with that connectivity.  If you are making web service calls you will want to check here before firing off. I have found that this class doesn’t actually work very well for determining if you have internet access.  You are better of using the following code where IsConnectedToInternet is an App level property. private void Application_Launching(object sender, LaunchingEventArgs e){ // Validate user access if (Microsoft.Phone.Net.NetworkInformation.NetworkInterface.NetworkInterfaceType != Microsoft.Phone.Net.NetworkInformation.NetworkInterfaceType.None) { IsConnectedToInternet = true; } else { IsConnectedToInternet = false; } NetworkChange.NetworkAddressChanged += new NetworkAddressChangedEventHandler(NetworkChange_NetworkAddressChanged);}void NetworkChange_NetworkAddressChanged(object sender, EventArgs e){ IsConnectedToInternet = (Microsoft.Phone.Net.NetworkInformation.NetworkInterface.NetworkInterfaceType != Microsoft.Phone.Net.NetworkInformation.NetworkInterfaceType.None);} Push Notification Push notification allows your application to receive notifications in a way that reduces the application’s power needs. This MSDN article is a good place to get the basics of push notification, but you can see the essential concept in the diagram below.  There are three types of push notification: toast, Tile and raw.  The first two work regardless of the state of the application where as raw messages are discarded if your application is not running.   Live Tiles Live tiles are one of the main differentiators of the Windows Phone platform.  They allow users to find information at a glance from their start screen without navigating into individual apps.  Knowing how to implement them can be a great boost to the attractiveness of your application. The simplest step-by-step explanation for creating live tiles is here. Local Database While your application really only has Isolated Storage as a data store there are some ways of giving you database functionality to develop against.  There are a number of open source ORM style solutions.  Probably the best and most native way I have found is to use LINQ to SQL.  It does take a significant amount of setup, but the ease of use once it is configured is worth the cost.  Rather than repeat the full concepts here I will point you to a post that I wrote previously. Tasks (Bing, Email) Leveraging built in features of the Windows Phone platform is an easy way to add functionality that would be expensive to develop on your own.  The classes that you need to make yourself familiar with are BingMapsDirectionsTask and EmailComposeTask.  This will allow your application to supply directions and give the user an email path to relay information to friends and associates. Event model Because of the ability for users to switch quickly to switch to other apps or the home screen is just one reason why knowing the Windows Phone event model is important.  You need to be able to save data so that if a user gets a phone call they can come back to exactly where they were in your application.  This means that you will need to handle such events as Launching, Activated, Deactivated and Closing at an application level.  You will probably also want to get familiar with the OnNavigatedTo and OnNavigatedFrom events at the page level.  These will give you an opportunity to save data as a user navigates through your app. Summary This is just a small portion of the concepts that you will use while building Windows Phone apps, but these are some of the most critical.  With the launch of Windows Phone 8 this list will probably expand.  Take the time to investigate these topics further and try them out in your apps. del.icio.us Tags: Windows Phone 7,Windows Phone,WP7,Software Development,70-599

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  • AddHandler not working?

    - by EdenMachine
    I can't figure out why my addhandler is not firing? In the Sub "CreateTagStyle" thd AddHandler is to firing when the LinkButton is clicked Is there some reason that addhandlers can't be adding at certain points of the page lifecycle? <%@ Page Title="" Language="VB" MasterPageFile="~/_Common/Admin.master" %> <script runat="server"> Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) End Sub Protected Sub RadGrid1_NeedDataSource(ByVal source As Object, ByVal e As Telerik.Web.UI.GridNeedDataSourceEventArgs) If Not e.IsFromDetailTable Then Dim forms As New MB.RequestFormPacket() RadGrid1.DataSource = forms.GetPackets() End If End Sub Protected Sub RadGrid1_DetailTableDataBind(ByVal source As Object, ByVal e As Telerik.Web.UI.GridDetailTableDataBindEventArgs) Select Case e.DetailTableView.Name Case "gtvForms" Dim PacketID As Guid = e.DetailTableView.ParentItem.GetDataKeyValue("ID") e.DetailTableView.DataSource = MB.RequestForm.GetRequestForms(PacketID) End Select End Sub Protected Sub RadGrid1_InsertCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) If IsValid Then Select Case TryCast(e.Item.NamingContainer.NamingContainer, GridTableView).Name Case "gtvPackets" Dim rtbName As RadTextBox = TryCast(e.Item.FindControl("rtbName"), RadTextBox) Dim IsActive As Boolean = TryCast(e.Item.FindControl("cbxIsActive"), CheckBox).Checked Dim packet As New MB.RequestFormPacket() packet.Name = rtbName.Text packet.IsActive = IsActive packet.Insert() e.Canceled = True e.Item.OwnerTableView.IsItemInserted = False RadGrid1.Rebind() System.Web.UI.ScriptManager.RegisterStartupScript(Me.Page, Me.GetType(), "ClientMessage", "SuccessMessage('Request Form Packet has been added successfully.');", True) Case "gtvForms" Dim parentItem As GridDataItem = e.Item.OwnerTableView.ParentItem Dim rcbForms As RadComboBox = TryCast(e.Item.FindControl("rcbForms"), RadComboBox) Dim rf As New MB.RequestForm() rf.RequestFormPacketID = CType(parentItem.OwnerTableView.DataKeyValues(parentItem.ItemIndex)("ID"), Guid) rf.FormID = rcbForms.SelectedValue If MB.RequestFormPacket.HasItems(rf.RequestFormPacketID) Then rf.SortOrder = rf.MaxSortOrder + 1 Else rf.SortOrder = 0 End If rf.Insert() e.Canceled = True e.Item.OwnerTableView.IsItemInserted = False TryCast(e.Item.NamingContainer.NamingContainer, GridTableView).Rebind() End Select End If End Sub Protected Sub RadGrid1_UpdateCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) If IsValid Then Select Case TryCast(e.Item.NamingContainer, GridTableView).Name Case "gtvPackets" Dim PacketID As Guid = CType(CType(e.CommandSource, Button).NamingContainer, GridEditFormItem).GetDataKeyValue("ID") Dim Name As String = TryCast(e.Item.FindControl("rtbName"), RadTextBox).Text Dim Tags As String = TryCast(e.Item.FindControl("hdnTags"), HiddenField).Value Dim IsActive As Boolean = TryCast(e.Item.FindControl("cbxIsActive"), CheckBox).Checked Dim rfp As New MB.RequestFormPacket() rfp.Update(PacketID, Name, IsActive) Call MB.RequestFormPacketTag.Insert(PacketID, Tags) e.Item.Edit = False TryCast(e.Item.NamingContainer, GridTableView).Rebind() System.Web.UI.ScriptManager.RegisterStartupScript(Me.Page, Me.GetType(), "ClientMessage", "SuccessMessage('Request Form Packet has been updated successfully.');", True) Case "gtvForms" Dim RequestFormID As Guid = CType(CType(e.CommandSource, Button).NamingContainer, GridEditFormItem).GetDataKeyValue("ID") Dim rcbForms As RadComboBox = TryCast(e.Item.FindControl("rcbForms"), RadComboBox) Dim rf As New MB.RequestForm() rf.Update(RequestFormID, rcbForms.SelectedValue) e.Item.Edit = False TryCast(e.Item.NamingContainer, GridTableView).Rebind() End Select End If End Sub Protected Sub RadGrid1_DeleteCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Dim editedItem As GridEditableItem = TryCast(e.Item, GridEditableItem) Select Case CType(editedItem.Parent.Parent, GridTableView).Name Case "gtvPackets" Dim ID As Guid = CType(CType(e.CommandSource, ImageButton).NamingContainer, GridDataItem).GetDataKeyValue("ID") MB.RequestFormPacket.Delete(ID) System.Web.UI.ScriptManager.RegisterStartupScript(Me.Page, Me.GetType(), "ClientMessage", "NotifyMessage('Request Form Packet has been deleted.');", True) Case "gtvForms" Dim ID As Guid = CType(CType(e.CommandSource, ImageButton).NamingContainer, GridDataItem).GetDataKeyValue("ID") MB.RequestForm.Delete(ID) System.Web.UI.ScriptManager.RegisterStartupScript(Me.Page, Me.GetType(), "ClientMessage", "NotifyMessage('Request Form has been removed.');", True) End Select End Sub Protected Sub ibnItemUpArrow_Command(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.CommandEventArgs) Dim gtv As GridTableView = CType(CType(sender, ImageButton).NamingContainer.NamingContainer, GridTableView) Dim ID As Guid = New Guid(e.CommandArgument.ToString()) Call MB.RequestForm.MoveUp(ID) gtv.Rebind() End Sub Protected Sub ibnItemDownArrow_Command(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.CommandEventArgs) Dim gtv As GridTableView = CType(CType(sender, ImageButton).NamingContainer.NamingContainer, GridTableView) Dim ID As Guid = New Guid(e.CommandArgument.ToString()) Call MB.RequestForm.MoveDown(ID) gtv.Rebind() End Sub Protected Sub RadGrid1_RowDrop(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridDragDropEventArgs) If String.IsNullOrEmpty(e.HtmlElement) Then If e.DraggedItems(0).OwnerGridID = RadGrid1.ClientID Then If e.DestDataItem IsNot Nothing Then Dim gtv As GridTableView = CType(e.DestDataItem.NamingContainer, GridTableView) For Each gdi As GridDataItem In e.DraggedItems Select Case gtv.Name Case "gtvForms" MB.RequestForm.DragAndDropReorder(gdi.GetDataKeyValue("ID"), e.DestDataItem.GetDataKeyValue("ID"), IIf(e.DropPosition = GridItemDropPosition.Above, True, False)) gtv.Rebind() End Select Next End If End If End If End Sub Protected Sub cbxAllowDragAndDrop_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Dim cbx As CheckBox = CType(sender, CheckBox) If cbx.Checked Then RadGrid1.ClientSettings.AllowRowsDragDrop = True RadGrid1.ClientSettings.Selecting.AllowRowSelect = True RadGrid1.ClientSettings.Selecting.EnableDragToSelectRows = True Else RadGrid1.ClientSettings.AllowRowsDragDrop = False RadGrid1.ClientSettings.Selecting.AllowRowSelect = False RadGrid1.ClientSettings.Selecting.EnableDragToSelectRows = False End If End Sub Protected Sub ibnDisableToggleProcess_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Dim ibn As ImageButton = CType(sender, ImageButton) Dim hdn As HiddenField = CType(ibn.NamingContainer.FindControl("hdnDisableProcessID"), HiddenField) Dim status As Boolean = MB.RequestFormPacket.ActivateToggle(New Guid(hdn.Value)) Dim gtv As GridTableView = CType(ibn.NamingContainer.NamingContainer, GridTableView) gtv.Rebind() System.Web.UI.ScriptManager.RegisterStartupScript(Me.Page, Me.GetType(), "ClientMessage", "SuccessMessage('Process has been " & IIf(status, "Activated", "Deactivated") & ".');", True) End Sub Protected Function DisplayTagList(ByVal tags As IEnumerable(Of MB.RequestFormPacketTag)) As String Dim list As String = "" For Each t As MB.RequestFormPacketTag In tags list += "<span class=""tags"">" & t.Tag.Name & "</span>" Next Return list End Function Protected Sub RadGrid1_ItemDataBound(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Select Case e.Item.GetType.Name Case "GridEditFormInsertItem" 'do nothing Case "GridEditFormItem" Dim plh As PlaceHolder = CType(e.Item.FindControl("plhTags"), PlaceHolder) Dim hdn As HiddenField = CType(e.Item.FindControl("hdnTags"), HiddenField) If hdn IsNot Nothing Then Dim gefi As GridEditFormItem = e.Item Dim packet As MB.RequestFormPacket = gefi.DataItem For Each pt As MB.RequestFormPacketTag In packet.RequestFormPacketTags Call CreateTagStyle(plh, hdn, pt.Tag.Name) If hdn.Value = "" Then hdn.Value = "|" End If hdn.Value += pt.Tag.Name & "|" Next End If End Select End Sub Protected Sub btnAddTag_Click(ByVal sender As Object, ByVal e As System.EventArgs) Dim btnAddTag As Button = sender Dim rtbTags As RadTextBox = btnAddTag.NamingContainer.FindControl("rtbTags") Dim plhTags As PlaceHolder = btnAddTag.NamingContainer.FindControl("plhTags") Dim hdnTags As HiddenField = btnAddTag.NamingContainer.FindControl("hdnTags") Dim TagExists As Boolean = False rtbTags.Text = rtbTags.Text.ToUpper().Trim() Dim currentTags() As String = Split(hdnTags.Value, "|") For i As Integer = 1 To currentTags.Count - 2 Call CreateTagStyle(plhTags, hdnTags, currentTags(i)) Next If TagExists = False And String.IsNullOrEmpty(rtbTags.Text) = False Then Call CreateTagStyle(plhTags, hdnTags, rtbTags.Text) If String.IsNullOrEmpty(hdnTags.Value) Then hdnTags.Value = "|" End If hdnTags.Value += rtbTags.Text & "|" 'System.Web.UI.ScriptManager.RegisterStartupScript(Me.Page, Me.GetType(), "ClientMessage", "highlightTag('" & lbn.ClientID & "');", True) End If rtbTags.Text = "" rtbTags.Focus() End Sub Public Sub RemoveTag(ByVal sender As Object, ByVal e As EventArgs) Response.End() Dim lbnSender As LinkButton = sender Dim plhTags As PlaceHolder = lbnSender.NamingContainer.FindControl("plhTags") Dim hdnTags As HiddenField = lbnSender.NamingContainer.FindControl("hdnTags") Response.Write(hdnTags.Value) Response.End() Dim TagExists As Boolean = False Dim currentTags() As String = Split(hdnTags.Value, "|") For i As Integer = 1 To currentTags.Count - 2 Call CreateTagStyle(plhTags, hdnTags, currentTags(i)) Next End Sub Protected Sub CreateTagStyle(ByVal plh As PlaceHolder, ByVal hdn As HiddenField, ByVal tagName As String) Dim lbn As New LinkButton() lbn.ID = "lbn_" & hdn.ClientID & "_" & tagName lbn.CssClass = "deleteCreateTag" lbn.Text = "X" AddHandler lbn.Click, AddressOf RemoveTag plh.Controls.Add(New LiteralControl("<div><span class=showTag>" & tagName & "</span>")) plh.Controls.Add(lbn) plh.Controls.Add(New LiteralControl("</div>")) End Sub </script> <asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"> <style type="text/css"> .tags { border:solid 1px #93AFE5; background-color:#F3F7F8; margin: 0px 2px 0px 2px; padding: 0px 4px 0px 4px; font-family:Verdana; font-size:10px; text-transform:uppercase; } </style> <script type="text/javascript"> function highlightTag(id) { $("#" + id).highlightFade({ color: '#FFFF99', speed: 2000, iterator: 'sinusoidal' }); } </script> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1" EnableAJAX="false"> <AjaxSettings> <telerik:AjaxSetting AjaxControlID="RadGrid1"> <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="RadGrid1" /> </UpdatedControls> </telerik:AjaxSetting> </AjaxSettings> </telerik:RadAjaxManager> <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" /> <telerik:RadTabStrip ID="RadTabStrip1" runat="server" Skin="WebBlue" style="position:relative;top:1px;" ValidationGroup="vgTabs"> <Tabs> <telerik:RadTab Text="Request Form Packets" Selected="true" ImageUrl="~/Admin/Images/Packet2.png" /> <telerik:RadTab Text="Request Forms" NavigateUrl="Forms.aspx" ImageUrl="~/Admin/Images/Forms.png" /> </Tabs> </telerik:RadTabStrip> <asp:ObjectDataSource ID="odsForms" runat="server" TypeName="MB.Form" SelectMethod="GetForms" /> <asp:Panel ID="pnlContent" runat="server" CssClass="ContentPanel"> <telerik:RadGrid ID="RadGrid1" runat="server" AllowPaging="True" AllowSorting="True" GridLines="None" OnNeedDataSource="RadGrid1_NeedDataSource" AllowAutomaticUpdates="true" AllowAutomaticDeletes="true" AllowAutomaticInserts="true" OnInsertCommand="RadGrid1_InsertCommand" OnUpdateCommand="RadGrid1_UpdateCommand" OnDeleteCommand="RadGrid1_DeleteCommand" OnRowDrop="RadGrid1_RowDrop" OnDetailTableDataBind="RadGrid1_DetailTableDataBind" OnItemDataBound="RadGrid1_ItemDataBound"> <%-----------------------------------------------------------%> <%------------------------- PACKETS -------------------------%> <%-----------------------------------------------------------%> <MasterTableView AutoGenerateColumns="False" DataKeyNames="ID" ClientDataKeyNames="ID" ShowHeadersWhenNoRecords="true" Name="gtvPackets" NoMasterRecordsText="There are currently no Request Form Packets" GroupLoadMode="Client" RetrieveNullAsDBNull="true" CommandItemDisplay="Top" AllowAutomaticUpdates="true" AllowAutomaticDeletes="true" AllowAutomaticInserts="true"> <RowIndicatorColumn> <HeaderStyle Width="20px"></HeaderStyle> </RowIndicatorColumn> <ExpandCollapseColumn> <HeaderStyle Width="20px"></HeaderStyle> </ExpandCollapseColumn> <CommandItemTemplate> <table width="100%"> <tr> <td class="AdminGridHeader">&nbsp;<img src="../Admin/Images/Packet2.png" align="absmiddle" width="16" height="16" />&nbsp;&nbsp;Request Form Packets</td> <td width="1%"><asp:CheckBox ID="cbxAllowDragAndDrop" runat="server" AutoPostBack="true" OnCheckedChanged="cbxAllowDragAndDrop_CheckedChanged" /></td> <td width="1%" nowrap="nowrap"><asp:Label AssociatedControlID="cbxAllowDragAndDrop" ID="Label1" runat="server" Text="Enable Drag and Drop Reordering" ToolTip="Drag and Drop Reordering applies only to Forms." /></td> <td align="right" width="1%"><asp:Button ID="btnAddPacket" Text="Create New Packet" runat="server" CommandName="InitInsert" /></td> </tr> </table> </CommandItemTemplate> <EditFormSettings> <EditColumn ButtonType="PushButton" HeaderStyle-Font-Bold="true" UniqueName="EditCommandColumn" /> </EditFormSettings> <EditItemStyle Font-Bold="true" BackColor="#FFFFCC" /> <Columns> <telerik:GridTemplateColumn HeaderText="Packet Name" UniqueName="PacketName" SortExpression="Name"> <ItemTemplate> <img src="../Admin/Images/Packet2.png" align="absmiddle" width="16" height="16" />&nbsp;&nbsp;<%#Eval("Name")%> </ItemTemplate> <EditItemTemplate> <telerik:RadTextBox runat="server" ID="rtbName" Width="300" Text='<%# Bind("Name") %>' /> <asp:RequiredFieldValidator ID="rfvName" runat="server" ErrorMessage="Required" ControlToValidate="rtbName" /> </EditItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderText="Tags" UniqueName="Tags"> <ItemTemplate> <%#DisplayTagList(Eval("RequestFormPacketTags"))%> </ItemTemplate> <EditItemTemplate> <asp:Panel ID="pnlAddTags" runat="server" DefaultButton="btnAddTag"> <table cellpadding="0" cellspacing="0"> <tr> <td> <telerik:RadTextBox ID="rtbTags" runat="server" Width="200" style="text-transform:uppercase;" /> <asp:RegularExpressionValidator ID="revTags" runat="server" ErrorMessage="Invalid Entry" ControlToValidate="rtbTags" Display="Dynamic" ValidationExpression="^[^<>`~!/@\#}$%:;)(_^{&*=|+]+$" ValidationGroup="vgTags" /> </td> <td> <asp:Button ID="btnAddTag" runat="server" ValidationGroup="vgTags" Text="Add" OnClick="btnAddTag_Click" /> </td> </tr> </table> </asp:Panel> <div id="divTags"> <asp:PlaceHolder id="plhTags" runat="server" /> <asp:HiddenField ID="hdnTags" runat="server" /> </div> </EditItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderTooltip="Disable" ItemStyle-Width="1%" ItemStyle-HorizontalAlign="Center" SortExpression="IsActive" UniqueName="IsActive" ReadOnly="true"> <ItemTemplate> <asp:ImageButton ID="ibnDisabledProcess" runat="server" ImageUrl="../Images/Icons/Stop.png" Width="16" OnClientClick="return window.confirm('Activate this Process?');" ToolTip="Click to activate this Request for Account use." Visible='<%#IIF(Eval("IsActive"),false,true) %>' OnClick="ibnDisableToggleProcess_Click" /> <asp:ImageButton ID="ibnEnabledProcess" runat="server" ImageUrl="../Images/Icons/Stop_disabled.png" Width="16" OnClientClick="return window.confirm('Deactivate this Process?');" ToolTip="Click to deactivate this Request for Account use." Visible='<%#IIF(Eval("IsActive"),true,false) %>' OnClick="ibnDisableToggleProcess_Click" /> <asp:HiddenField ID="hdnDisableProcessID" runat="server" Value='<%#Eval("ID") %>' /> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderText="Is Active" UniqueName="IsActiveCheckbox" Display="false"> <EditItemTemplate> <asp:CheckBox ID="cbxIsActive" runat="server" Checked='<%# IIF(Eval("IsActive") Is DbNull.Value OrElse Eval("IsActive") = False,False,True) %>' /> </EditItemTemplate> </telerik:GridTemplateColumn> <telerik:GridEditCommandColumn ButtonType="ImageButton" EditText="Edit Admin" ItemStyle-Width="16" EditImageUrl="~/Images/edit-small.png" /> <telerik:GridButtonColumn ConfirmText="Do you really want to delete this Admin? WARNING: THIS CANNOT BE UNDONE!!" ConfirmDialogType="RadWindow" ConfirmTitle="Delete" ButtonType="ImageButton" CommandName="Delete" Text="Delete Admin" ImageUrl="~/Images/Delete.png" UniqueName="DeleteColumn"> <ItemStyle HorizontalAlign="Center" Width="16" /> </telerik:GridButtonColumn> </Columns> <DetailTables> <%-----------------------------------------------------------%> <%-------------------------- FORMS --------------------------%> <%-----------------------------------------------------------%> <telerik:GridTableView Name="gtvForms" AllowPaging="true" PagerStyle-Position="TopAndBottom" PageSize="20" AutoGenerateColumns="false" DataKeyNames="RequestFormPacketID,ID" runat="server" CommandItemDisplay="Top" Width="100%"> <ParentTableRelation> <telerik:GridRelationFields DetailKeyField="RequestFormPacketID" MasterKeyField="ID" /> </ParentTableRelation> <CommandItemTemplate> <table width="100%" class="AdminGridHeaders"> <tr> <td class="AdminGridHeaders"> &nbsp;<img src="../Admin/Images/Forms.png" align="absmiddle" width="16" height="16" />&nbsp;&nbsp;Forms </td> <td align="right"> <asp:Button ID="ibnAdd" runat="server" Text="Add Form" CommandName="InitInsert" /> </td> </tr> </table> </CommandItemTemplate> <EditFormSettings> <EditColumn ButtonType="PushButton" InsertText="Save" UpdateText="Update" CancelText="Cancel" /> </EditFormSettings> <EditItemStyle Font-Bold="true" BackColor="#FFFFCC" /> <Columns> <telerik:GridTemplateColumn HeaderText="Form Name" UniqueName="FormName"> <ItemTemplate> <img src="../Admin/Images/Forms.png" align="absmiddle" width="16" height="16" style="margin-right:4px;" /> <%#Eval("Form.Name")%> </ItemTemplate> <EditItemTemplate> <telerik:RadComboBox ID="rcbForms" runat="server" DataSourceID="odsForms" AppendDataBoundItems="true" DataTextField="Name" DataValueField="ID" SelectedValue='<%#Bind("FormID")%>'> <Items> <telerik:RadComboBoxItem Text="-- Select a Form --" Value="" /> </Items> </telerik:RadComboBox> <asp:RequiredFieldValidator ID="rfvForms" runat="server" ErrorMessage="Required" ControlToValidate="rcbForms" InitialValue="-- Select a Form --" Display="Dynamic" /> </EditItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderText="Test" ReadOnly="true" UniqueName="TestForm" HeaderStyle-Width="1%" ItemStyle-HorizontalAlign="Center"> <ItemTemplate> <asp:HyperLink ID="hypTestForm" runat="server" NavigateUrl='<%# "FormsPreview.aspx?fid=" & Eval("FormID").ToString() & "&test=true" %>' Target="_blank"><asp:Image ID="imgTestProcess" runat="server" ImageUrl="~/Admin/Images/Test.png" ImageAlign="AbsMiddle" ToolTip="Test Form" /></asp:HyperLink> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn HeaderText="Header" SortExpression="Header" UniqueName="Header"> <ItemTemplate> <%#Eval("Form.Header")%>&nbsp; </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridTemplateColumn ReadOnly="true" ItemStyle-HorizontalAlign="Center" HeaderStyle-Width="1%" HeaderStyle-Wrap="false" ItemStyle-Wrap="false" UniqueName="SortOrder"> <ItemTemplate> <asp:ImageButton ID="ibnItemUpArrow" runat="server" Width="16" height="16" ImageUrl="~/Admin/Images/ArrowUp.png" ImageAlign="AbsMiddle" Visible='<%#IIF(Eval("SortOrder") = 0,false,true) %>' CommandArgument='<%#Eval("ID") %>' OnCommand=

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  • IE7 not digesting JSON: "parse error" [resolved]

    - by Kenny Leu
    While trying to GET a JSON, my callback function is NOT firing. $.ajax({ type:"GET", dataType:'json', url: myLocalURL, data: myData, success: function(returned_data){alert('success');} }); The strangest part of this is that my JSON(s) validates on JSONlint this ONLY fails on IE7...it works in Safari, Chrome, and all versions of Firefox, (EDIT: and even in IE8). If I use 'error', then it reports "parseError"...even though it validates! Is there anything that I'm missing? Does IE7 not process certain characters, data structures (my data doesn't have anything non-alphanumeric, but it DOES have nested JSONs)? I have used tons of other AJAX calls that all work (even in IE7), but with the exception of THIS call. An example data return (EDIT: This is a structurally-complete example, meaning it is only missing a few second-tier fields, but follows this exact hierarchy)here is: {"question":{ "question_id":"19", "question_text":"testing", "other_crap":"none" }, "timestamp":{ "response":"answer", "response_text":"the text here" } } I am completely at a loss. Hopefully someone has some insight into what's going on...thank you! EDIT Here's a copy of the SIMPLEST case of dummy data that I'm using...it still doesn't work in IE7. { "question":{ "question_id":"20", "question_text":"testing :", "adverse_party":"none", "juris":"California", "recipients":"Carl Chan" } } EDIT 2 I am starting to doubt that it is a JSON issue...but I have NO idea what else it could be. Here are some other resources that I've found that could be the cause, but they don't seem to work either: http://firelitdesign.blogspot.com/2009/07/jquerys-getjson.html (Django uses Unicode by default, so I don't think this is causing it) Anybody have any other ideas? ANSWER I finally managed to figure it out...mostly via tedious trial-and-error. I want to thank everyone for their suggestions...as soon as I have 15 rep, I'll upvote you, I promise. :) There was basically no way that you guys could have figured it out, because the issue turned out to be a strange bug between IE7 and Django (my research didn't bring up any similar issues). We were basically using Django template language to generate our JSON...and in the midst of this particular JSON, we were using custom template tags: {% load customfilter %} { "question":{ "question_id":"{{question.id}}", "question_text":"{{question.question_text|customfilterhere}}" } } As soon as I deleted anything related to the customfilter, IE7 was able to parse the JSON perfectly! We still don't have a workaround yet, but at least we now know what's causing it. Has anyone seen any similar issues? Once again, thank you everyone for your contributions.

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  • Defining a ContextMenu in a DataGridRow style

    - by Brent
    I'm trying to clean up some of my xaml in my views by moving a lot of the DataGrid styles into a ResourceDictionary. One of the things I'd like to move is the ContextMenu that is bound to some commands in the ViewModel. However, when I move the context menu to the ResourceDictionary, the commands are are never firing anymore, and I can't figure out why. I've defined the ContextMenu in the DataGridRow style so that when the user right clicks on the columnheader, no ContextMenu is shown... it will only be shown they right click on a row. Am I doing something wrong here? FYI I'm using VS 2010 RTM if that makes a difference. <Style x:Key="DataGridRowStyle" TargetType="{x:Type DataGridRow}"> <Setter Property="Height" Value="20"/> <Setter Property="ContextMenu"> <Setter.Value> <ContextMenu> <MenuItem Header="New" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.NewCommand}"> <MenuItem.Icon> <Image Source="/Images/DocumentWhite(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> <MenuItem Header="Open" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.OpenCommand}"> <MenuItem.Icon> <Image Source="/Images/FolderOpenYellow(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> <MenuItem Header="Delete" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.DeleteCommand}"> <MenuItem.Icon> <Image Source="/Images/Delete(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> </ContextMenu> </Setter.Value> </Setter> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Background" Value="{StaticResource hoverGradient}"/> </Trigger> <Trigger Property="IsSelected" Value="True"> <Setter Property="Background" Value="{StaticResource BtnOverFill}"/> </Trigger> </Style.Triggers> </Style>

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