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  • Can xjc -version be trusted?

    - by JasonPlutext
    I've spent the day debugging an issue with JAXB getting namespaces wrong or missing (possibly related to Marshaller.JAXB_FRAGMENT, but that's not the point here). I found the problem occurs with JAXB RI 2.1.10 in my endorsed dir. It is fixed if I use JAXB RI 2.2.4 or 2.2.6 Here is what is really confusing (and what made it take so long). The problem occurs on Linux with: $ java -version java version "1.7.0_03" OpenJDK Runtime Environment (IcedTea7 2.1.1pre) (7~u3-2.1.1~pre1-1ubuntu2) OpenJDK 64-Bit Server VM (build 22.0-b10, mixed mode) $ xjc -version xjc 2.2.4 but it should work fine, if this java really uses JAXB RI 2.2.4 !! Similarly, I can't reproduce the issue on Windows with Java 1.6.0_27, which reports: C:\Program Files\Java\jdk1.6.0_27\bin>java -version java version "1.6.0_27" Java(TM) SE Runtime Environment (build 1.6.0_27-b07) Java HotSpot(TM) 64-Bit Server VM (build 20.2-b06, mixed mode) C:\Program Files\Java\jdk1.6.0_27\bin>xjc -version xjc version "JAXB 2.1.10 in JDK 6" JavaTM Architecture for XML Binding(JAXB) Reference Implementation, (build JAXB 2.1.10 in JDK 6) and yet if I put 2.1.10 RI in my endorsed dir, the problem occurs. It should occur with 1.6.0_27, if that really uses JAXB RI 2.1.10. It seems to me that the problem I'm experiencing has been fixed in the reference implementation somewhere after 2.1.10 and before 2.2.4, but that neither of the 2 VM's above actually use the JAXB version they claim to. Or possibly they use the xjc they claim, but not what is in jaxb-api.jar and jaxb-impl.jar (I know there is a difference in the namespace prefix mapper property, but that won't be causing this problem). I've done these experiments on Win 7 and Ubuntu, in tomcat (no eclipse), and in eclipse (no tomcat), so I'm pretty confident I'm explaining my findings correctly. Can anyone provide any insight into what is happening? If I'm right, does anyone know what versions of JAXB the various Sun/Oracle JDKs really use?

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  • How can I implement NHibernate session per request without a dependency on NHibernate?

    - by Ben
    I've raised this question before but am still struggling to find an example that I can get my head around (please don't just tell me to look at the S#arp Architecture project without at least some directions). So far I have achieved near persistance ignorance in my web project. My repository classes (in my data project) take an ISession in the constructor: public class ProductRepository : IProductRepository { private ISession _session; public ProductRepository(ISession session) { _session = session; } In my global.asax I expose the current session and am creating and disposing session on beginrequest and endrequest (this is where I have the dependency on NHibernate): public static ISessionFactory SessionFactory = CreateSessionFactory(); private static ISessionFactory CreateSessionFactory() { return new Configuration() .Configure() .BuildSessionFactory(); } protected MvcApplication() { BeginRequest += delegate { CurrentSessionContext.Bind(SessionFactory.OpenSession()); }; EndRequest += delegate { CurrentSessionContext.Unbind(SessionFactory).Dispose(); }; } And finally my StructureMap registry: public AppRegistry() { For<ISession>().TheDefault .Is.ConstructedBy(x => MvcApplication.SessionFactory.GetCurrentSession()); For<IProductRepository>().Use<ProductRepository>(); } It would seem I need my own generic implementations of ISession and ISessionFactory that I can use in my web project and inject into my repositories? I'm a little stuck so any help would be appreciated. Thanks, Ben

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  • overriding enumeration base type using pragma or code change

    - by vprajan
    Problem: I am using a big C/C++ code base which works on gcc & visual studio compilers where enum base type is by default 32-bit(integer type). This code also has lots of inline + embedded assembly which treats enum as integer type and enum data is used as 32-bit flags in many cases. When compiled this code with realview ARM RVCT 2.2 compiler, we started getting many issues since realview compiler decides enum base type automatically based on the value an enum is set to. http://www.keil.com/support/man/docs/armccref/armccref_Babjddhe.htm For example, Consider the below enum, enum Scale { TimesOne, //0 TimesTwo, //1 TimesFour, //2 TimesEight, //3 }; This enum is used as a 32-bit flag. but compiler optimizes it to unsigned char type for this enum. Using --enum_is_int compiler option is not a good solution for our case, since it converts all the enum's to 32-bit which will break interaction with any external code compiled without --enum_is_int. This is warning i found in RVCT compilers & Library guide, The --enum_is_int option is not recommended for general use and is not required for ISO-compatible source. Code compiled with this option is not compliant with the ABI for the ARM Architecture (base standard) [BSABI], and incorrect use might result in a failure at runtime. This option is not supported by the C++ libraries. Question How to convert all enum's base type (by hand-coded changes) to use 32-bit without affecting value ordering? enum Scale { TimesOne=0x00000000, TimesTwo, // 0x00000001 TimesFour, // 0x00000002 TimesEight, //0x00000003 }; I tried the above change. But compiler optimizes this also for our bad luck. :( There is some syntax in .NET like enum Scale: int Is this a ISO C++ standard and ARM compiler lacks it? There is no #pragma to control this enum in ARM RVCT 2.2 compiler. Is there any hidden pragma available ?

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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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  • nHibernate strategies in a web farm

    - by Pete Nelson
    Our current project at work is a new MVC web site that will use a WCF service primarily to access a 3rd party billing system via a web service as well as a small SQL database for user personalization. The WCF service uses nHibernate for the SQL database. We'd like to implement some sort of web farm for load balancing as well as failover and maintenance. I'm trying to decide the best way to handle nHibernate's caching and database concurrency if there are multiple WCF services running. Some scenarios I've been thinking about... 1) Multiple IIS servers, one WCF server. With this setup, the WCF server would be a single point of failure, but there would be no issues with nHibernate caching or database concurrency. 2) Multiple IIS servers, each with it's own WCF service. This removes a single point of failure, but now nHibernate on one machine would not know about database changes done by another machine. Some solutions to number 2 would be to use an IStatelessSession so we're not doing any caching and nHibernate is always fetching directly from the database. This might be the most feasible as our personalization database has very few objects in it. I'm also considering a 2nd-level cache such as memcached or Velocity, but it may be overkill for this system. I'm putting this out there to see if anyone has experience doing this sort of architecture and to get some ideas for a solution. Thanks!

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  • How can I log and retrieve error messages from a client-side desktop app?

    - by KeyboardMonkey
    Update: The service-based answers below are most likely the way to go, I am also curious to see if there are any out-the-box solutions anyone has tried in the field. Our system uses a client-server architecture, and with more clients using it I'm thinking of better ways to log client application errors, and get them sent to us. Currently we just show a simple error message, with a button that preps an email (with the default system email client) and the clients send this on to our support address. This contains extra info like the stack trace. We also tried saving errors to a network share in the company, but I'm not too keen on that archaic solution either. Now there are only two businesses that refer to clients as users, and I'm sure some of ours support both lifestyles, as they just ignore the email button, and sends a full screen-shot wrapped nicely in a word document. Some factors I'm thinking of include A solution to log errors, like the contrived one above, A robust solution; Logging to a SQL database won't work; if that fails too, then what? Is at least semi-automated, preferably to the point where the logs reach my side. It copes with load, our client base is growing and the current solution, and our inboxes, won't hold up. Minimise installing extra 3rd party components on clients, I want to keep the SPOF to a min. I'd love to hear about any experience or suggestions you have on how I can implement such a solution. System Details It's a Microsoft .Net 2 based system with a SQL backend. Some users work remotely over the net, so network shares aren't always available (unless they VPN, which is awesomely slow at any rate). We have users across different companies, their DB's are hosted on-site. We have remote access to 90% of them.

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  • Team Foundation Server - A programmer's guide

    - by Filip Ekberg
    In addition to my Previous topic on How to use SVN, Branch? Tag? Trunk? I would like to get in-depth on how a programmer should/could use TFS. The things that are most interesting to me is not how to set up the server, rather how you use it on a daily basis. In the area of software engineering where your responsibility not only lies on code but achitecture, documentation and other fields, you need to have a collection of your work, prefferably on the same place. So these are my point of interest which I would like to get more knowledge about How would you strucuter a TFS Workspace / Project to support lots of different customers / projects and maybe different projects per customer? Splitting up the folder strucutre on the above project into different pieces such as, Code, Documents - Architecture, Requirements and other, what more could there be and what would be a nice commonly used folder structure? An easy to browse repository; Again the folder structure here is important however this point is more aimed at different Explorers for the repository, not only the built in Team Foundation Explorer. These are just a couple of the points that I would like to know more about, suggestions on Beginners guides, in-depth guides and links covering the above would be very much helpful, please feel free to add other important knowledge-points to this as well.

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  • Jquery Flexslider - can't see navigational images (manualControl)

    - by Kim Thomas
    I've spent a lot of time looking at the post on 3/13/12 re: manual controls, but isn't getting me all the way there...probably because I don't know jquery. Sorry, newbie on board. I'm trying to get the right/left arrows to show, as well as the 1, 2, 3...at the bottom. They are there, I see the lists on Firebug, just don't know how to add them to the "hook" (?) so they appear. Here is the code I have in header: <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script> <script src="jquery.flexslider.js"></script> <script type="text/javascript" charset="utf-8"> $(window).load(function() { $('.flexslider').flexslider({ animation: "slide", slideshow: false, controlNav: true, manualControls: ".flex-control-nav li a", controlsContainer: ".flex-container" }); }); </script> Here is my html: <div class="flex-container"> <div class="flexslider"> <ul class="slides"> <li><img src="images/tah_home.jpg" alt="taylor art house home page" width="600" height="320"/> <p class="flex-caption">Taylor Art House Home Page</p></li> <li><img src="images/tah_blog.jpg" alt="taylor art house blog page" width="600" height="320" /> <p class="flex-caption">We created a blog that fits seemlessly into Taylor Art House's look</p></li> <li><img src="images/tah_artwork_page.jpg" alt="taylor art house art page" width="600" height="320" /> <p class="flex-caption">One of Taylor Art House's gallery pages, using a Wordpress plugin</p></li> <li><img src="images/tah_arch_portfolio.jpg" alt="jon taylor architecture portfolio page" width="600" height="320" /> <p class="flex-caption">We created links to toggle from TAH to Jon Taylor Architecture</p></li> </ul> </div><!--end flexsider--> </div><!--end flex-container--> Here is the Flexslider CSS: /* * jQuery FlexSlider v1.8 * http://www.woothemes.com/flexslider/ * * Copyright 2012 WooThemes * Free to use under the MIT license. * http://www.opensource.org/licenses/mit-license.php */ /* Browser Resets */ .flex-container a:active, .flexslider a:active, .flex-container a:focus, .flexslider a:focus {outline: none;} .slides, .flex-control-nav, .flex-direction-nav {margin: 0; padding: 0; list-style: none;} /* FlexSlider Necessary Styles *********************************/ .flexslider { width: 100%; margin: 0; padding: 0; } .flexslider .slides > li { display: none; -webkit-backface-visibility: hidden; } /* Hide the slides before the JS is loaded. Avoids image jumping */ .flexslider .slides img { max-width: 100%; display: block; } .flex-pauseplay span { text-transform: capitalize; } /* Clearfix for the .slides element */ .slides:after { content: "."; display: block; clear: both; visibility: hidden; line-height: 0; height: 0; } html[xmlns] .slides { display: block; } * html .slides { height: 1%; } /* No JavaScript Fallback */ /* If you are not using another script, such as Modernizr, make sure you * include js that eliminates this class on page load */ .no-js .slides > li:first-child { display: block; } /* FlexSlider Default Theme *********************************/ .flexslider { width: 600px; background: #fff; border: 4px solid #999; position: relative; margin: 30px 0; -webkit-border-radius: 5px; -moz-border-radius: 5px; -o-border-radius: 5px; border-radius: 5px; zoom: 1; } .flexslider .slides { zoom: 1; } .flexslider .slides > li { position: relative; } /* Suggested container for "Slide" animation setups. Can replace this with your own, if you wish */ .flex-container { zoom: 1; position: relative; margin-left:100px; } /* Caption style */ /* IE rgba() hack */ .flex-caption { background:none; -ms-filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#4C000000,endColorstr=#4C000000); filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#4C000000,endColorstr=#4C000000); zoom: 1; } .flex-caption { width: 96%; padding: 2%; margin: 0; position: absolute; left: 0; bottom: 0; background: rgba(0,0,0,.3); color: #fff; text-shadow: 0 -1px 0 rgba(0,0,0,.3); font-size: 14px; line-height: 18px; } /* Direction Nav */ .flex-direction-nav { height: 0; } .flex-direction-nav li a { width: 52px; height: 52px; margin: -13px 0 0; display: block; background: url(theme/bg_direction_nav.png) no-repeat; position: absolute; top: 50%; cursor: pointer; text-indent: -999em; } .flex-direction-nav li .next { background-position: -52px 0; right: -21px; } .flex-direction-nav li .prev { left: -20px; } .flex-direction-nav li .disabled { opacity: .3; filter:alpha(opacity=30); cursor: default; } /* Control Nav */ .flex-control-nav { width: 100%; position: absolute; bottom: -30px; text-align: center; } .flex-control-nav li { margin: 0 0 0 5px; display: inline-block; zoom: 1; *display: inline; } .flex-control-nav li:first-child { margin: 0; } .flex-control-nav li a { width: 13px; height: 13px; display: block; background: url(theme/bg_control_nav.png) no-repeat; cursor: pointer; text-indent: -999em; } .flex-control-nav li a:hover { background-position: 0 -13px; } .flex-control-nav li a.active { background-position: 0 -26px; cursor: default; } Here is how it appears in Firebug: <div class="flex-container"> <div class="flexslider" style="overflow: hidden;"> <ul class="slides" style="width: 1200%; margin-left: -1800px;"> <li class="clone" style="width: 600px; float: left; display: block;"> <li style="width: 600px; float: left; display: block;"> <li style="width: 600px; float: left; display: block;"> <li style="width: 600px; float: left; display: block;"> <li style="width: 600px; float: left; display: block;"> <li class="clone" style="width: 600px; float: left; display: block;"> </ul> </div> <ol class="flex-control-nav"> <li> <a class="">1</a> </li> <li> <li> <li> </ol> <ul class="flex-direction-nav"> <li> <a class="prev" href="#">Previous</a> </li> <li> <a class="next" href="#">Next</a> </li> </ul> </div> Finally, here is a link to the jsFiddle file (I saw someone wanted that in other flexslider post): http://jsfiddle.net/kthms/Wxmsp/ Link to page: http://www.kajortdesigns.com/tah.php I've tried every combo of class from the CSS in the manualControl: "", but I'm just guessing. If anyone can help this newbie out, I would be very appreciative. Explicit instructions are always appreciated.

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  • Backend raising (INotify)PropertyChanged events to all connected clients?

    - by Jörg Battermann
    One of our 'frontend' developers keeps requesting from us backend developers that the backend notifies all connected clients (it's a client/server environment) of changes to objects. As in: whenever one user makes a change, all other connected clients must be notified immediately of the change. At the moment our architecture does not have a notification system of that kind and we don't have a sort of pub/sub model for explicitly chosen objects (e.g. the one the frontend is currently implementing).. which would make sense in such a usecase imho, but obviously requires extra implementation. However, I thought frontends typically check for locks for concurrently existing user changes on the same object and rather pull for changes / load on demand and in the background rather than the backend pushing all changes to all clients for all objects constantly.. which seems rather excessive to me. However, it's being argumented that e.g. the MS Entity Framework does in fact publish (INotify)PropertyChanged not only for local changes, but for all such changes including other client connections, but I have found no proof or details regarding this. Can anyone shed some light into this? Do other e.g. ORMs etc provide broadcasted (INotify)PropertyChanged events on entities?

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  • ACL architechture for a Software As a service in Spring 3.0

    - by geoaxis
    I am making a software as a service using Spring 3.0 (Spring MVC, Spring Security, Spring Roo, Hibernate) I have to come up with a flexible access control list mechanism.I have three different kinds of users System (who can do any thing to the system, includes admin and internal daemons) Operations (who can add and delete users, organizations, and do maintenance work on behalf of users and organizations) End Users (they belong to one or more organization, for each organization, the user can have one or more roles, like being organization admin, or organization read-only member) (role like orgadmin can also add users for that organization) Now my question is, how should i model the entity of User? If I just take the End User, it can belong to one or more organizations, so each user can contain a set of references to its organizations. But how do we model the users role for each organization, So for example User UX belongs to organizations og1, og2 and og3, and for og1 he is both orgadmin, and org-read-only-user, where as for og2 he is only orgadmin and for og3 he is only org-read-only-user I have the possibility of making each user belong to one organization alone, but that's making the system bounded and I don't like that idea (although i would still satisfy the requirement) If you have a better extensible ACL architecture, please suggest it. Since its a software as a service, one would expect that alot of different organizations would be part if the same system. I had one concern that it is not a good idea to keep og1 and og2 data on the same DB (if og1 decides to spawn a 100 reports on the system, og2 should not suffer) But that is some thing advanced for now and is not directly related to ACL but to the physical distribution of data and setup of services based on those ACLs This is a community Wiki question, please correct any thing which you wish to do so. Thanks

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  • ASP.NET MVC DisplayAttribute and interfaces

    - by msi
    I have some interface and classes public inteface IRole { int Id { get; } string Name { get; set; } } public class Role : IRole { public int Id { get; } [Display("Role Name")] public string Name { get; set; } } public class Member { [Display("Login")] public string Login { get; set; } [Display("Password")] public string Password { get; set; } public IRole Role { get; set; } } on View I try to use, View is strongly type of Member on this line displays correct message from DisplayAttribute <%= Html.LabelFor(m => m.Login) %> on this line it does not display correct label from DisplayAttribute <%= Html.LabelFor(m => m.Role.Name) %> How can I fix this to have correct labels in such architecture? Thanks P.S. I know about adding DisplayAttribute to the interface field and all will work, but maybe there are different solution.

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  • Transition from 2D to 3D later in game development

    - by Axarydax
    Hi, I'd like to work on a game, but for rapidly prototyping it, I'd like to keep it as simple as possible, so I'd do everything in top-down 2D in GDI+ and WinForms (hey, I like them!), so I can concentrate on the logic and architecture of the game itself. I thinking about having the whole game logic (server) in one assembly, where the WinForms app would be a client to that game, and if/when the time is right, I'd write a 3D client. I am tempted to use XNA, but I haven't really looked into it, so I don't know if it won't take too much time getting up to speed - I really don't want to spent much time doing other stuff than the game logic, at least while I have the inspiration. But I wouldn't have to abandon everything and transfer to new platform when transitioning from 2D to 3D. Another idea is just to get over it and learn XNA/Unity/SDL/something at least to that level so I can make the same 2D version as I could in GDI+, and I won't have to worry about switching frameworks anymore. Let's just say that the game is the kind where you watch a dude from behind, you run around the gameworld and interact with objects. So the bird's eye perspective could be doable for now. Thanks.

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  • Java equivalent to VS solution file

    - by Chris
    I'm a C# guy trying to learn Java. I understand the syntax and the basic architecture of the Java platform, and have no problem doing smaller projects myself, but I'd really like to be able to download some open source projects to learn from the work of others. However, I'm running into a stumbling block that I can't seem to find any information on. When I download an open source .NET project, I can open the .sln file with visual studio and everything just loads. Sure, there's occasionally a missing reference or something, but there's really very little configuration required to get things going. I'm not sensing the same ease of use with Java. I'm using eclipse at the moment, and it feels like for every project I have to create a brand new Eclipse project using "create from existing source", and almost nothing compiles properly without significant reconfiguration. In the case of web projects, it's even worse, because Eclipse doesn't appear to support creating a web project from existing source. I have to create a standard Java project from source, then then apparently modify the project file to include the bindings for the web toolkit stuff to work properly. Assuming I want to be able to contribute to a project later on, I shouldn't have to be making such drastic changes to the file structure to get my IDE to a workable state. What am I missing?

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  • Integration tests in Continuous Integration environment: Database and filesystem state

    - by dario_ramos
    I'm trying to implement automated integration tests for my application. It's a very complex monster. You could say that its database and part of the filesystem are part of its state, because it saves image files in the hard drive, and references to those in the DB. The software needs all those, in a coherent state, to work properly. Back to writing tests: To run any relevant test, I need some image files in the filesystem, and certain records filled in the database. I thought of putting all of these in a separate folder called TestEnvironmentData in the repository, and retrieving them from the Continuous Integration Server (Team City), but a colleague said the repo is quite full as it is, and that I should set up a special directory, and databases, only in the Continuous Integration server. I don't like that because the tests success depend on me manually mantaining stuff in the server, and restoring initial state before every test becomes cumbersome. What do you guys do when you need to write integration tests for an app like this? The main goal is having an automated test harness to approach a large scale refactoring. There's lots of spaghetti code and the app's current architecture is hardly unit testable, that's why I decided on integration tests first. Any alternative approach is welcome.

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  • RESTful idempotence

    - by DutrowLLC
    I'm designing a RESTful web service utilizing ROA(Resource oriented architecture). I'm trying to work out an efficient way to guarantee idempotence for PUT requests that create new resources in cases that the server designates the resource key. From my understanding, the traditional approach is to create a type of transaction resource such as /CREATE_PERSON. The the client-server interaction for creating a new person resource would be in two parts: Step 1: Get unique transaction id for creating the new PERSON resource::: **Client request:** GET /CREATE_PERSON **Server response:** 200 OK transaction-id:"as8yfasiob" Step 2: Create the new person resource in a request guaranteed to be unique by using the transaction id::: **Client request** PUT /CREATE_PERSON/{transaction_id} first_name="Big bubba" **Server response** 201 Created // (If the request is a duplicate, it would send this PersonKey="398u4nsdf" // same response without creating a new resource. It // would perhaps send an error response if the was used // on a transaction id non-duplicate request, but I have // control over the client, so I can guarantee that this // won't happen) The problem that I see with this approach is that it requires sending two requests to the server in order to do to single operation of creating a new PERSON resource. This creates a performance issues increasing the chance that the user will be waiting around for the client to complete their request. I've been trying to hash out ideas for eliminating the first step such as pre-sending transaction-id's with each request, but most of my ideas have other issues or involve sacrificing the statelessness of the application. Is there a way to do this?

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  • .NET WF4: Should it be in the middle of everything?

    - by stimpy77
    I am aware that WF4 (Windows Workflow 4.0, part of .NET 4.0) is a significant rework and redesign of WF3, where much of what made WF3 a poor technology choice has been cleaned up in WF4. For example, as far as I can tell, WF4 (Windows Workflow 4.0) activities are more or less testable with [TestMethod] and mocking. This among other things, like improved performance, has grabbed my attention about the technology again, whereas I had previously pooh-poohed WF3. I'm working on a new architecture for essentially an n-tier collaborative application (not enterprise-class, just a smallish project with potential to grow significantly) where I'm already trying to discipline myself to use IoC and, to some extent, TDD, and I'm wondering, in general terms, whether it is wiser to just hand-code workflow logic or if I should delve into learning and integrating WF4 so that WF becomes literally the controller of the entire application, i.e. the practical C in "MVC" (not ASP.NET MVC but rather the pattern). So should workflow activities in WF4 be the primary controller for a highly expandable/growable web-based collaborative application? Or am I asking entirely the wrong question? This is a vague question, I'm sure, so abstract answers are as welcome as specific ones.

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  • Compile MonoDevelop 4.2.3

    - by user2942643
    I need help, I'm trying to compile monodevelop code, but when I use the command "./configure" tells me that I need to have installed a version of mono, but I have it installed [raven@localhost ~]$ mono -V Mono JIT compiler version 3.2.8 (tarball Fri May 30 08:15:47 CDT 2014) Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com TLS: __thread SIGSEGV: altstack Notifications: epoll Architecture: amd64 Disabled: none Misc: softdebug LLVM: supported, not enabled. GC: sgen [raven@localhost ~]$ cd /home/raven/Downloads/monodevelop-4.2.3 [raven@localhost monodevelop-4.2.3]$ ./configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /usr/bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking how to create a ustar tar archive... gnutar checking whether to enable maintainer-specific portions of Makefiles... no checking for mono... /usr/local/bin/mono checking for gmcs... /usr/local/bin/gmcs checking for pkg-config... /usr/bin/pkg-config configure: error: You need mono 3.0.4 or newer [raven@localhost monodevelop-4.2.3]$

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  • Maintaining a Python web application: heavier vs lighter framework?

    - by Tiberiu Ana
    Five+ years from now, you are hired to support and extend a data-centric web application written in Python that hasn't been kept up to date. Would you rather prefer it was written in the current version of Django/Pylons at the time, using the available standard components, or kept minimal with something like CherryPy/web.py and a few library dependencies? Heavy framework Advantages: standard approach to application design and structure, as encouraged by framework; less application code to worry about. Disadvantages: requires learning the framework to understand how things work; broken things in old version of framework difficult to fix; upgrading to new version potentially difficult due to changing APIs; finding relevant documentation/help potentially difficult due to changing APIs. Light framework Advantages: most application code is directly "visible"; only needed features are implemented; architecture should be simpler to understand; less need to upgrade external dependencies; easier to upgrade external dependencies. Disadvantages: some reinventing the wheel; non-standard design and structure (with the associated unique issues and bugs). I will update the list with any helpful answers.

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  • IIS, Web services, Time out error

    - by Eduard
    Hello, We’ve got problem with ASP.NET web application that uses web services of other system. I’ll describe our system architecture: we have web application and Windows services that uses the same web services. - Windows service works all the time and sends information to these web services once an hour. - Web application is designed for users to send the same information in manual behavior. The problem is when user sometimes tries to send information in manual behavior in the web application, .NET throws exception „The operation has timed out” (web?). At that time Windows service successfully sends all necessary information to these web services. IT stuff that supports these web services asserts that there was no any request from our web application at that time. Then we have restarted IIS (iisreset) and everything has started to work fine. This situation repeats all the time. There is no anti-virus or firewall on the server. My suggestion is that there is something wrong with IIS, patches, configuration or whatever? The only specific thing is that there are requests that can least 2 minutes (web service response wait time). We tried to reproduce this situation on our local test servers, but everything works fine. OS: Windows Server 2003 R2 .NET: 3.5

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  • SQL Server CLR stored procedures in data processing tasks - good or evil?

    - by Gart
    In short - is it a good design solution to implement most of the business logic in CLR stored procedures? I have read much about them recently but I can't figure out when they should be used, what are the best practices, are they good enough or not. For example, my business application needs to parse a large fixed-length text file, extract some numbers from each line in the file, according to these numbers apply some complex business rules (involving regex matching, pattern matching against data from many tables in the database and such), and as a result of this calculation update records in the database. There is also a GUI for the user to select the file, view the results, etc. This application seems to be a good candidate to implement the classic 3-tier architecture: the Data Layer, the Logic Layer, and the GUI layer. The Data Layer would access the database The Logic Layer would run as a WCF service and implement the business rules, interacting with the Data Layer The GUI Layer would be a means of communication between the Logic Layer and the User. Now, thinking of this design, I can see that most of the business rules may be implemented in a SQL CLR and stored in SQL Server. I might store all my raw data in the database, run the processing there, and get the results. I see some advantages and disadvantages of this solution: Pros: The business logic runs close to the data, meaning less network traffic. Process all data at once, possibly utilizing parallelizm and optimal execution plan. Cons: Scattering of the business logic: some part is here, some part is there. Questionable design solution, may encounter unknown problems. Difficult to implement a progress indicator for the processing task. I would like to hear all your opinions about SQL CLR. Does anybody use it in production? Are there any problems with such design? Is it a good thing?

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  • Repackaging Jasper-Reports into an application specific OSGi bundle, legal or not?

    - by Chris
    Hi, I wanted to ask (probably a silly) question regarding the packaging of existing open-source components as OSGi bundles (more specifically Jasper Reports). I have an application that I am converting from a monolithic jar-hell type architecture to something more moduler and OSGi is my weapon of choice. There are various modules I have in mind but one of the modules is a reporting module. My own reporting module will be a jar file containing my code that should reference a Jasper Reports bundle. Trouble is, Jasper reports depends on far far too many libraries and is quite monolithic in its own right. I therefore wish to build my own Jasper Reports bundle but this is where I start getting confused about the legality of repackaging. I don't plan to re-compile but I do plan to re-bundle removing known items that I do not require. Can anyone offer advice on whether I am permitted to repackage (not recompile or extend) open-source libraries into OSGi bundles without falling foul of 'derivative works' clause of LGPL? I noticed that Groovy seems to offer some monolithic jars that include all dependancies and actually goes so far as to re-arrange the packages of its dependancies so that there are no namespace conflicts. This seems to me to be a violation of the license but if anyone can reassure me that this is legal then I would feel safer about my less intrusive custom-bundling of Jasper reports. Thanks for your time, Chris

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  • Data sharing amongst JPA Entities

    - by Nick
    Setup: I have a simple web app that has a handfull of forms, each on a separate page. These forms represent patient data. There is a one-to-one relationship between patient and all these forms/entities. Each form maps directly to a db table and a JPA entity, maybe not the best architecture but it works and is simple. Question: If form/entity A and form/entity B share a common chunk of data (one of more fields), what is the best way to handle that in JPA. I.E. - If the data gets inserted via form A, I need it to show up in form B as existing data and vice versa. In other words its logical for both entities to contain that data. I believe I will have to move the common data into its own entity and define the relationships that way, but I have tried many different ways and none gets me all the way, at least with basic JPA. Can this be done through pure JPA relationships or will I have to write a bunch of code to make this happen manually. Not looking for code specifically, just the correct way to model this data. Thanks.

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  • Place the business logic in Java Beans?

    - by Lirik
    I was reading this page and I found the following statement: MVC in Java Server Pages Now that we have a convenient architucture to separate the view, how can we leverage that? Java Server Pages (JSP) becomes more interesting because the HTML content can be separated from the Java business objects. JSP can also make use of Java Beans. The business logic could be placed inside Java Beans. If the design is architected correctly, a Web Designer could work with HTML on the JSP site without interfering with the Java developer. Interestingly in my textbook I pulled the following quote: In the MVC architecture... the original request is always handled by a servlet. The servlet invokes the business logic and data access code and creates beans to represent the results (that’s the model). Then, the servlet decides which Java Server Page is appropriate to present those particular results and forwards the request there (the JSP is the view). The servlet decides what business logic code applies and which JSP should present the results (the servlet is the controller). The two statements seem slightly contradicting. What is the best way to use beans: should we place business logic in them or should we only place results in them? Are there ways in which beans are inadequate for representing a model?

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  • Modularity in Flex

    - by Fernando
    I'm working on a pretty big application for Flex/Air. We are using GraniteDS and Tide to interact with the model from our Java EE server. I've been reading about modularization and Modules in Flex. The application has already been built, and I'm figuring a way out to re-design some classes and parts. From what I've read so far, I understand a Module is a different swf which can be dynamically load. Most of the tutorials/documentation are oriented to Flash "programmers" who are using Flex or Air instead of real developers, so that makes online resources harder to get. What I can't understand - yet - is how to encapsulate ActionScript classes or MXML views under this module. I've separated some of the code into libraries. For example, the generated code from Granite is in a "server" library. But I would like to separate parts of the logic with its Moderators, Controllers and Views. Are modules the way to go? Is there a "modules for dummies" or "head first Flex Modules for programmers" like tutorial in order to get a better perspective in order to build my architecture? When to choose libraries and when to choose modules? I'm using Flex 3.5, and a migration to Flex 4 is way far into the future, so no Flex 4 answers please, thanks!

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  • Unit tests for deep cloning

    - by Will Dean
    Let's say I have a complex .NET class, with lots of arrays and other class object members. I need to be able to generate a deep clone of this object - so I write a Clone() method, and implement it with a simple BinaryFormatter serialize/deserialize - or perhaps I do the deep clone using some other technique which is more error prone and I'd like to make sure is tested. OK, so now (ok, I should have done it first) I'd like write tests which cover the cloning. All the members of the class are private, and my architecture is so good (!) that I haven't needed to write hundreds of public properties or other accessors. The class isn't IComparable or IEquatable, because that's not needed by the application. My unit tests are in a separate assembly to the production code. What approaches do people take to testing that the cloned object is a good copy? Do you write (or rewrite once you discover the need for the clone) all your unit tests for the class so that they can be invoked with either a 'virgin' object or with a clone of it? How would you test if part of the cloning wasn't deep enough - as this is just the kind of problem which can give hideous-to-find bugs later?

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