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• Crystal report subreport parameter autobinding logic feeds duplicate parameters to different subrepo

  - by quillbreaker

  I have a report, and I place the same subreport within the footer twice. The report has three parameters and the subreport has four parameters. When I try to run the report through the report designer, it prompts me for seven parameters instead of the eleven I was hoping for. It prompts for one set of parameters for the subreport (with a default prompt of @parameter(subreport.rpt)/@parameter(subreport.rpt - 01), and passes the same set of parameters to both subreports. This isn't what I want the report to do. Furthermore, if I look at 'show report parameters', it does show eleven parameters, with the same value for both subreport parameter sets. So it knows that it's two different subreports, but it does not want to let me enter it that way. Is there some way I can make crystal designer realize that it should take different values for each subreport? The only solution I've found is to add 8 more parameters, one for each subreport / subreport parameter combination, and bind them individually. It works, but it feels like a workaround. Does anyone have a better solution?

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• Getting Greyscale pixel value from RGB colourspace in Java using BufferedImage

  - by Andrew Bolster

  Anyone know of a simple way of converting the RGBint value returned from <BufferedImage> getRGB(i,j) into a greyscale value? I was going to simply average the RGB values by breaking them up using this; int alpha = (pixel >> 24) & 0xff; int red = (pixel >> 16) & 0xff; int green = (pixel >> 8) & 0xff; int blue = (pixel) & 0xff; and then average red,green,blue. But i feel like for such a simple operation I must be missing something...

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• Building Web Application project using MSBuild from command line on 64-bit: missing targets file

  - by James Allen

  Building a solution containing a web application project using MSBuild from powershell like this: msbuild "/p:OutDir=$build_dir\" $solution_file Works fine for me on 32-bit, but on a 64-bit machine I am running into this error: error MSB4019: The imported project "C:\Program Files\MSBuild\Microsoft\VisualStudio\v9.0\WebApplications\Microsoft.WebApplication.targets" was not found. Confirm that the path in the declaration is correct, and that the file exists on disk. I am using Visual Studio 2008 and powershell v2. The problem has already been documented here and here. Basically on 64-bit install of VS, the Microsoft.WebApplication.targets needed by MSBuild is in the Program Files(x86) dir, not the Program Files dir, but MSBuild doesn't recognise this and so looks in the wrong place. The two solutions are not ideal: Manually copy the file on 64-bit from Program Files(x86) to Program Files. This is a poor solution - every dev will have to do this manually. Manually edit the csproj file so MSBuild looks in the right place. Again not ideal: I would rather not have to get everyone on 64bit to manually edit csproj files on every new project. e.g. <Import Project="$(MSBuildExtensionsPathx86)\$(WebAppTargetsSuffix)" Condition="Exists('$(MSBuildExtensionsPathx86)\$(WebAppTargetsSuffix)')" /> Ideally I want a way to tell MSBuild to import the target file form the right place from the command line but I can't work out how to do that. Any solutions?

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• WMD markdown editor - HTML to Markdown conversion

  - by gg1

  I am using wmd markdown editor on a project and had a question: When I post the form containing the markdown text area, it (as expected) posts html to the server. However, say upon server-side validation something fails and I need to send the user back to edit their entry, is there anyway to refill the textarea with just the markdown and not the html? Since as I have it set up, the server only has access to the post data (which is in the form of html) so I can't seem to think of a way to do this. Any ideas? Preferably a non-javascript based solution. Update: I found an html to markdown converter called markdownify. I guess this might be the best solution for displaying the markdown back to the user...any better alternatives are welcome! Update 2: I found this post on SO and I guess there is an option to send the data to the server as markdown instead of html. Are there any downsides to simply storing the data as markdown in the database? What about displaying it back to the user (outside of an editor)? Maybe it would be best to post both versions (html AND markdown) to the server... SOLVED: I can simply use php markdown to convert the markdown to html serverside.

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• Using LLBL as Model in MVC

  - by Quentin J S

  I have settled on trying to use ASP.NET MVC but the first part I want to replace is the Model. I am using LLBL Pro for the model. I have a table called "Groups" that is a simple look up table. I want to take thhe results of the table and populate a list in MVC. Something that should be very simple... or so I thought.... I've tried all kinds of things as I was getting errors like: The model item passed into the dictionary is of type 'System.Collections.Generic.List1[glossary.EntityClasses.GroupEntity]', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable1[glossary.CollectionClasses.GroupCollection]'. private GroupCollection gc = new GroupCollection(); public ActionResult Index() { gc.GetMulti(null); return View( gc.?????? ); } This is all I am trying to do, I've tried lots of variations, but my goal is simply to take the data and display it.

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• Paypal subscriptions IPN - problem with users subscribing multiple times

  - by Brian Armstrong

  I'm using paypal subscriptions and the instant payment notification (IPN) to handle subscribers on my site. For the most part it works well but there is one occasional problem I've encountered. Usually if a user cancels their subscription, I wait for the "end of term" (subscr_eot) notification before disabling access to my site. So if they prepay for the whole month, and then cancel right away, they still have access for the rest of the month (as it should be). But some users are having this problem where they: Cancel their subscription Before the "end of term" is reached they decide to re-subscribe When the "end of term" is reached for their first subscription, my app receives the notification and fires off an email to the user with something like "your account has been disabled, if you ever want to sign up again, you can re-subscribe by clicking here". This confuses them because they are thinking...that's weird, I thought I subscribed like a week ago (and they did). So they go subscribe AGAIN. Now they have two concurrent running subscriptions to my site and I get a support email in a month or two ("wtf you billed me twice this month jerk!!") So I haven't found a good way to fix this. I guess the best solution would be to do an additional API call when the "end of term" notification is received which asks paypal "hey did this person already re-subscribe?". If so then no need to fire off that email. But I haven't seen any way to do this API call yet. Another solution is to disable their account immediately when they cancel (the "subscr_cancel" notification) but then I get different angry support emails "hey I prepaid for the whole month why was my account disabled already!!". Anyone else solved this?

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• Circular file references not allowed

  - by Program.X

  Hi, I am having a problem in building my solution in VS2008. Normally, it compiles fine in the environment. Sometimes, it fails with: /xxx_WEB/secure/CMSManagedTargetPage.aspx(1): error ASPPARSE: Circular file references are not allowed. I rebuild and it works fine. Now, however, I am in the middle of setting up a CruiseControl.NET system and am testing my checked out code with MSBuild before I integrate the build into CC. Now, everytime I MSBuild, I get: "Q:\cc\xxx\checked out from svn\xxx.sln" (default target) (1) -> (xxx_WEB target) -> /xxx_WEB/secure/CMSManagedTargetPage.aspx(1): error ASPPARSE: Circular file references are not allowed. Problem is, I can't see where this reference is. I have searched for the reference across the entire solution and canf ind no references to the page itself (CMSManagedTargetPage) anywhere other than in the page or its codebehind, or within a string, eg: C:\dev2008\xxx\IWW.xxx.ASPNET\AspxHttpHandler.cs(82): inputFile = context.Server.MapPath("~/secure/CMSManagedTargetPage.aspx"); C:\dev2008\xxx\IWW.xxx.ASPNET\AspxHttpHandler.cs(83): virtualPath = "~/secure/CMSManagedTargetPage.aspx"; My assembly references are also fine (as far as I know). My Web Application is at the "top" of the dependencies, and nothing references it and therefore the faulting page so cannot cause a circular reference. Of course, the page itself may reference something such as a UserControl within the same assembly/web site, but as mentioned earlier, a search on CMSManagedTargetPage yielded no results so this is not happening. Changing the batch attribute in web.config had no effect on MSBuild. I find it very odd that it "sometimes" fails in VS and always fails in MSBuild. Am I missing some subtlety?

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• Synchronizing an ERWin model with a Visual Studio 2008 GDR 2/2010 db project

  - by Grant Back

  I am looking for options to get our vast collection of DB objects across many DBs into source control (TFS 2010). Once we succeed here, we will work toward generating our alter scripts for a particular DB change via TFS build. The problem is, our data architecture group is responsible for maintaining the DB objects (excluding SPs), and they work within a model centric process, via ERWin. What this means, is that they maintain the DBs via ERWin models, and generate alters from them that are used to release changes. In order to achieve our goal of getting the DB objects (not just the ERWin models) into TFS, I believe the best option is to do this via Visual Studio DB projects. From what I can tell, there is very little urgency for CA to continue supporting an integration between ERWin and Visual Studio, that no longer works as of Visual Studio 2008 DB Ed. GDR. If I have been mislead in this regard, please feel free to set me straight. One potential solution is to: Perform changes in the ERWin model. Take the alter script generated from ERWin, and import the script into the appropriate Visual Studio DB project, updating the objects in the in the DB project Check the changed objects in the DB project into TFS. TFS Build executes to generate the alter scripts that will be used to push the changes through our release process. My question is, is this solution viable, or are there any other options?

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• Python imaging alternatives

  - by Paul McMillan

  I have python code that needs to do just a couple simple things to photographs: crop, resize, and overlay a watermark. I've used PIL, and the resample/resize results are TERRIBLE. I've used imagemagick, and the interface and commands were designed by packaging a cat in a box, and then repeatedly throwing it down a set of stairs at a keyboard. I'm looking for something which is not PIL or Imagemagick that I can use with python to do simple, high-quality image transformations. For that matter, it doesn't even have to have python bindings if the command line interface is good. Oh, and it needs to be relatively platform agnostic, our production servers are linux, but some of our devs develop on windows. It can't require the installation of a bunch of silly gui code to use as a library, either.

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• SimpleModal load external HTML page in dialog

  - by Bart

  Is it possible to load an external HTML file into a variable and then use this variable to load the SimpleModal dialog? Something like this: $(document).ready(function($) { var externalPage $.get("Renderer.htm"); $('#basic-modal .basic').click(function(e) { $(externalPage).modal(); return false; }); }); An alternative solution (that works) is loading the external HTML file in a hidden div and then use this to load the dialog. $(document).ready(function($) { $('#simplemodal-content').hide(); // or hide in css $('#simplemodal-content').load("Renderer.htm"); $('#basic-modal .basic').click(function(e) { $('#simplemodal-content').modal(); return false; }); }); However if I take this approach the css defined for the external page can interfere with my local page and thus change the layout, which is not desired. If there's a 3rd solution that's better than these approaches, please share. PS: sadly it also has to work perfectly in IE6.

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• Jersey, Spring, Tomcat and Security Annotations

  - by jr

  I need to secure a simple jersey RESTful API in a Tomcat 6.0.24 container. I'd like to keep the authentication with Basic Authentication using the tomcat-users.xml file to define the users and roles (this is for now, like I said its small). Now, for authorization I'd like to be able to use the JSR 250 annotations like @RolesAllowed, @PermitAll, @DenyAll, etc. I cannot for the life of me figure out how to wire this all up together. I really don't want to go spring-security route, since I need something very simple at the current time. Can someone point me in the right direction.

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• Simulating aspects of static-typing in a duck-typed language

  - by Mike

  In my current job I'm building a suite of Perl scripts that depend heavily on objects. (using Perl's bless() on a Hash to get as close to OO as possible) Now, for lack of a better way of putting this, most programmers at my company aren't very smart. Worse, they don't like reading documentation and seem to have a problem understanding other people's code. Cowboy coding is the game here. Whenever they encounter a problem and try to fix it, they come up with a horrendous solution that actually solves nothing and usually makes it worse. This results in me, frankly, not trusting them with code written in duck typed language. As an example, I see too many problems with them not getting an explicit error for misusing objects. For instance, if type A has member foo, and they do something like, instance->goo, they aren't going to see the problem immediately. It will return a null/undefined value, and they will probably waste an hour finding the cause. Then end up changing something else because they didn't properly identify the original problem. So I'm brainstorming for a way to keep my scripting language (its rapid development is an advantage) but give an explicit error message when an an object isn't used properly. I realize that since there isn't a compile stage or static typing, the error will have to be at run time. I'm fine with this, so long as the user gets a very explicit notice saying "this object doesn't have X" As part of my solution, I don't want it to be required that they check if a method/variable exists before trying to use it. Even though my work is in Perl, I think this can be language agnostic.

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• How to upgrade the project build in visual studio 2005 to visual studio 2008?

  - by Shailesh Jaiswal

  I have one OPC ( OLE for Process control ) server project which is developed into visual studio 2005. I want to run it in visual studio 2008. The coding for the OPC server project is done in VC++. I want to connect my OPC client to this OPC server. When I was opened the OPC server project which was build into visual studio 2005 into visual studio 2008 first time it was asking for conversion wizard. I gone through that wizard & successfully finished that wizard. But when I build ( by right clicking on the project & choosing build solution ) it is giving lots of error near about 64 errors. Most of the errors are like - fetal error C1083:Can not open type library file:'msxml4.dll':No such file or directory, fetal error LINK1181:can not open input file 'rpcndr.lib' , error C2051:case expression not constant. only these 3 types of errors in am getting. All these 3 errors are repeated in Error list & becoming bunch of 64 errors. Please provide me the solution for the above issue. Can you provide me any suusgestion or link or any way through whcih I can resolve the above issue?

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• Streaming Flash Video Problem - Clipping

  - by Stanley

  I have a simple flash video player that streams the video from a streaming media server. The stream plays fine and I have no problems with playing the video and doing simple functions. However, my problem is that on a mouse over of the video, I have the controls come up and when I do a seek or scrub on the video, I get little weird boxes that show over the video - like little pockets - of the video playing super fast (you can basically see it seeking) until it gets to the point it needs to be at and then these little boxes disappear. Is anybody else having these problems and if so, how do I fix this? I thought it might be some kind of masking problem, but I haven't been able to figure it out. Please Help!!!

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• C# Conditional Operator Not a Statement?

  - by abelenky

  I have a simple little code fragment that is frustrating me: HashSet<long> groupUIDs = new HashSet<long>(); groupUIDs.Add(uid)? unique++ : dupes++; At compile time, it generates the error: Only assignment, call, increment, decrement, and new object expressions can be used as a statement HashSet.Add is documented to return a bool, so the ternary (?) operator should work, and this looks like a completely legitimate way to track the number of unique and duplicate items I add to a hash-set. When I reformat it as a if-then-else, it works fine. Can anyone explain the error, and if there is a way to do this as a simple ternary operator?

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• XAML Deserialization problem

  - by mrwayne

  Hi, I have a block of XAML of which i'm trying to deserialize. For arguments sake lets say it looks like below. <NS:SomeObject> <NS:SomeObject.SomeProperty> <NS:SomeDifferentObject SomeOtherProp="a value"/> </NS:SomeObject.SomeProperty> </NS:SomeObject> Of which i deserialise using the following code. XamlReader.Load( File.OpenRead( @"c:\SomeFile.xaml")) I have 2 solutions, one i use Unit Testing, and another i have for my web application. When i'm using the unit testing solution, it deserializes fine and works as expected. However, when i try to deserialize using my other project i keep getting an exception like the following. 'NameSpace.SomeObject' value cannot be assigned to property 'SomeProperty' of object 'NameSpace.SomeObject'. Object of Type 'NameSpace.SomeObject' cannot be converted to type 'NameSpace.SomeObject'. It's as if it is getting confused or instantiating 2 different types of objects? Note, i do not have similarly named classes or any sort of namespace conflict. The same codes executes fine in one solution and not the other. The same project files are referenced in both. Please help!

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• How to clip rendering in OpenGL (C++)

  - by topright

  How to clip rendering in OpenGL (simple rectangle area)? Please post a C++ example.

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• Use the Django ORM in a standalone script (again)

  - by Rishabh Manocha

  I'm trying to use the Django ORM in some standalone screen scraping scripts. I know this question has been asked before, but I'm unable to figure out a good solution for my particular problem. I have a Django project with defined models. What I would like to do is use these models and the ORM in my scraping script. My directory structure is something like this: project scrape #scraping scripts ... test.py web django_project settings.py ... #Django files I tried doing the following in project/scrape/test.py: print os.path.join(os.path.abspath('..'), 'web', 'django_project') sys.path.append(os.path.join(os.path.abspath('..'), 'web', 'django_project')) print sys.path print "-------" os.environ['DJANGO_SETTINGS_MODULE'] = 'django_project.settings' #print os.environ from django_project.myapp.models import MyModel print MyModel.objects.count() However, I get an ImportError when I try to run test.py: Traceback (most recent call last): File "test.py", line 12, in <module> from django_project.myapp.models import MyModel ImportError: No module named django_project.myapp.models One solution I found around this problem is to create a symbolic link to ../web/govcheck in the scrape folder: :scrape rmanocha$ ln -s ../web/govcheck ./govcheck With this, I can then run test.py just fine. However, this seems like a hack, and more importantly, is not very portable (I will have to create this symbolic link everywhere I run this code). So, I was wondering if anyone has any better solutions for my problem?

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• Toggle Android emulator network traffic from emulator invocation

  - by highphi

  I'm working on scripts to manage large amounts of Android emulators and I need to disable all network traffic on some of them. Because I'm doing all of this on a headless server, I cannot use the F8 hotkey described on the emulater documentation. I'm currently routing the TCP traffic through a null proxy with by using emulator-arm ... -http-proxy 0.0.0.0:0 and this blocks the traffic that I want it to. I thought this was working well until I noticed some strange error messages while running my scripts. The console started outputting accept too many open files and checking the open files with lsof reveals numerous messages stating "can't identify protocol" ... emulator- 19463 username 19u sock 0,6 0t0 1976595845 can't identify protocol emulator- 19463 username 20u sock 0,6 0t0 1976595847 can't identify protocol ... The only "solution" I found to this is to kill all of the emulators and then wait until this limit is reached again, which is hardly a solution at all. Is there another way to do this while invoking the emulator? Am I incorrectly using the -htt-proxy switch to block the traffic? Other people found solutions to block traffic by manually doing this by using airplane mode, but this isn't feasible for me as I'm controlling emulators via scripts. I could send keyevents to the emulator with my script and turn the phone on in airplane mode, but I would prefer something more reliable than this.

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• What is critical section in threading?

  - by Lalit Dhake

  Please can some one briefly tell me with example what does the means of critical section? in simple language

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• Using Hibernate's ScrollableResults to slowly read 90 million records

  - by at

  I simply need to read each row in a table in my MySQL database using Hibernate and write a file based on it. But there are 90 million rows and they are pretty big. So it seemed like the following would be appropriate: ScrollableResults results = session.createQuery("SELECT person FROM Person person") .setReadOnly(true).setCacheable(false).scroll(ScrollMode.FORWARD_ONLY); while (results.next()) storeInFile(results.get()[0]); The problem is the above will try and load all 90 million rows into RAM before moving on to the while loop... and that will kill my memory with OutOfMemoryError: Java heap space exceptions :(. So I guess ScrollableResults isn't what I was looking for? What is the proper way to handle this? I don't mind if this while loop takes days (well I'd love it to not). I guess the only other way to handle this is to use setFirstResult and setMaxResults to iterate through the results and just use regular Hibernate results instead of ScrollableResults. That feels like it will be inefficient though and will start taking a ridiculously long time when I'm calling setFirstResult on the 89 millionth row... UPDATE: setFirstResult/setMaxResults doesn't work, it turns out to take an unusably long time to get to the offsets like I feared. There must be a solution here! Isn't this a pretty standard procedure?? I'm willing to forgo Hibernate and use JDBC or whatever it takes. UPDATE 2: the solution I've come up with which works ok, not great, is basically of the form: select * from person where id > <offset> and <other_conditions> limit 1 Since I have other conditions, even all in an index, it's still not as fast as I'd like it to be... so still open for other suggestions..

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• svn merge - moved repository to a different server, and now getting 'has different repository root'

  - by HorusKol

  This is kind of similar to http://stackoverflow.com/questions/1601021/subversion-merge-has-different-repository-root-than - but appears to be a very different cause (especially as the answer for that question didn't resolve my problem). A while back, we swapped out the server where our SVN repositories are located - but we've been using an alias so that the old server name points to the new server. I've been getting in the habit where I will use the new server name wherever I checkout new working copies - but we having made changes to most of the current working copies as they are live websites. Until now, this hasn't been a problem - except that this morning I merged in some changes from my development branch to a working copy I have of the release version and I got the message "file has different repository root" and the merge stops dead. I know this is because I'm using the new server name when the development branch was updated via the old server name - but is there a simple way to fix this? Or if not a simple way - is there a well-documented way to fix this?

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• LinQ to objects GroupBy() by object and Sum() by amount

  - by Daniil Harik

  Hello, I have pretty simple case which I started solving using foreach(), but then I thought I could do It using Linq Basically I have IList that contains PaymentTransaction objects and there are 2 properties Dealer and Amount I want to GroupBy() by Dealer and Sum() bv amount. I tried to accomplish this using following code, but unfortunately it does not work var test = paymentTransactionDao.GetAll().GroupBy(x => x.Dealer).Sum(x => x.Amount); Want exactly I'm doing wrong here? I'm sorry if this question is too simple. Thank You

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• displaying web pages over web views in collection view using cocoa bindings

  - by Miraaj

  Hi all, I tried sample example given at this link - Collection View Programming Guide It is simple and it worked. Considering it as a reference I tried a simple application which will show a collection view of web views with some web page displayed over each web view. The model class has two properties: NSString *pageName, and NSURL *pageURL. I then followed each and every step written in tutorial above with required modifications but I was caught in the step - How to bind web view to collection view item? In binding tab it shows three possibilities : Editable, Hidden, Tool tip but none of these is working. Can anyone suggest me way to accomplish my requirement? Thanks, Miraaj

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• Find coordinate by angle

  - by George Johnston

  I am developing in application in XNA which draws random paths. Unfortunately, I'm out of touch with graphing, so I'm a bit stuck. My application needs to do the following: Pick a random angle from my origin (0,0), which is simple. Draw a circle in relation to that origin, 16px away (or any distance I specify), at the angle found above. (Excuse my horrible photoshoping) The second circle at (16,16) would represent a 45 degree angle 16 pixels away from my origin. I would like to have a method in which I pass in my distance and angle that returns a point to graph at. i.e. private Point GetCoordinate(float angle, int distance) { // Do something. return new Point(x,y); } I know this is simple, but agian, I'm pretty out of touch with graphing. Any help? Thanks, George

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