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• Hows does Seam injection work in Ejb3

  - by kazanaki

  Hello We are using Seam 2.2.0 Java 1.6.14 Weblogic 10.3.1.0 (named 11g Doh!) I have looked at Seam reference Seam in action These web pages However I still do not understand how to inject an EJB3 bean into a JSF backing bean. It seems to me that I have to (correct me if I am wrong) Annotate with @Name my backing bean Annotate with @Name my EJB3 bean Use the @In annotation in the backing bean Put an empty seam.properties file in the WAR that contains the backing bean Put an empty seam.properties file in the JAR that contains the EJB Set up a Seam interceptor in ejb-jar.xml of the EJB Don't I need to setup some JNDI URL somewhere? How exactly does Seam will find the EJB? The interceptor is enough? Also this means that I have to add a seam dependency in my EJB archive (because of the @Name annotation). So the web layer (Seam) "spills" into my business logic (EJB). Is this the recommended approach? Am I missing something here?

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• Entity Framework and consuming a WCF service

  - by nakori

  I'm getting data where the database is hidden behind a WCF service. Is it possible to use Entity Framework in a scenario where I have custom objects coming from a web service? (No access to the external database, and no current plans for insert/update/delete logic) Starting with an empty EF model and adding an entity I get this error on compile: No mapping specified for instances of the EntitySet and AssociationSet in the EntityContainer .. Is it possible to make an entity this way, and fill it with data received from an object? (In this case a WCF, but could also be a predefined model class/xml data) If the web service retured a Customer object I could do something like this with a dataset: Make an unbound table and do a loop through the customer properties adding them to a temp row, add it with tbl_Customer.Addtbl_CustomerRow(customerRow) to get my view filled. thanks, nakori

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• Sharepoint Web Part OnPreRender PostBack Dynamic TextBoxes Not Accessible In Button Handler

  - by Matt

  I have a custom webpart which extends System.Web.UI.WebControls.WebPart and implements an EditorPart. I have all the static controls being added in the overridden CreateChildControls method as I know this makes them persistent across PostBacks. However, I have some TextBoxes being added in the overridden OnPreRender method because the actual TextBoxes that I add depend upon the data returned from a Web Service which I am calling in OnPreRender. The Web Service has to be called in OnPreRender because I need some of the Property values that are set in the EditorPart. If I build this logic into the CreateChildControls method, obviously the data is not available on first PostBack after an edit is applied because the PostBack events are restored after CreateChildControls. This means the page has to be posted twice before the data is refreshed and that is just cludgy. How can make these TextBoxes along with their entered text values persistent across PostBacks so that I can access them in the button handler? Thanks for any help, Matt

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• Infragistics Webgrid (Datagrid) dynamic adjusting columns

  - by mattgcon

  I want to explain this as best as I can. I have a Webgrid with a certain amount of columns. What I want is for the columns to adjust to the size of the largest string within each column, where the total of all width of columns does not exceed the width of the webgrid. At the same time however if the width of all columns is less than the width of the webgrid I want each column to adjust proportionately so that the total of columns widths equal the width of the webgrid. Can anyone help me with this logic?

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• Hibernate Criteria: Add restrictions to Criteria and DetachedCriteria

  - by Gilean

  Currently our queries add a variety of Restrictions to ensure the results are considered active or live. These Restrictions are used in several places/queries so a method was setup similar to public Criteria addStandardCriteria(Criteria criteria, ...) { // Add restrictions, create aliases based on parameters // and other non-trivial logic criteria.add(...); return criteria; } This has worked fine so far, but now this standard criteria needs to be added to a subquery using DetachedCriteria. Is there a way to modify this method to accept Criteria or DetachedCriteria or a Better way to add restrictions?

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• Rack rSpec Controller Tests with Rack Middleware issue

  - by Roman Gonzalez

  Howdy, I'm having big trouble testing with rSpec's controller API. Right now I'm using a middleware authentication solution (Warden), and when I run the specs, the proxy added by the middleware is not there, and all the authentication tests are throwing NilPointerExceptions all over the place. It seems rSpec is not adding the middleware to the final app on purpose, and I would like to know if there is a way to monkey patch rSpec in order to make that go. I already tested the whole thing with cucumber, however this is a refactoring of an old authentication version and there is several Controller tests that depend on authentication logic in order to work. Thanks in advance.

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• Daily Backups for a single table in Microsoft SQL Server

  - by James Horton

  Hello, I have a table in a database that I would like to backup daily, and keep the backups of the last two weeks. It's important that only this single table will be backed up. I couldn't find a way of creating a maintenance plan or a job that will backup a single table, so I thought of creating a stored procedure job that will run the logic I mentioned above by copying rows from my table to a database on a different server, and deleting old rows from that destination database. Unfortunately, I'm not sure if that's even possible. Any ideas how can I accomplish what I'm trying to do would be greatly appreciated. Thank you.

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• Problem building dotnetnuke blog module

  - by GeminiDNK

  I have dnn 5.2 running on my machine, and installed the blog module, the blog module is also reflected in the development environment i have. But i want to find out, how do i actually develope, or build the blog from source, so i can actually output the .dll file, instead of just running it. If i import the Blog project file from the folder, it will give me a host of error like .resx file not found and so on. Does any dotnetnuke expert out there know about this?And have encountered the problem before? If not, how do you actually make the module work so u can make changes to the module. Im talking about core logic change, like adding functions, not just skin or UI changes.

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• MySql timeouts - Should I set autoReconnect=true in Spring application?

  - by George

  After periods of inactivity on my website (Using Spring 2.5 and MySql), I get the following error: org.springframework.dao.RecoverableDataAccessException: The last packet sent successfully to the server was 52,847,830 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem. According to this question, and the linked bug, I shouldn't just set autoReconnect=true. Does this mean I have to catch this exception on any queries I do and then retry the transaction? Should that logic be in the data access layer, or the model layer? Is there an easy way to handle this instead of wrapping every single query to catch this?

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• Sending persisted JDO instances over GWT-RPC

  - by Ben Daniel

  I've just started learning Google Web Toolkit and finished writing the Stock Watcher tutorial app. Is my thinking correct that if one wants to persist a business object (like a Stock) using JDO and send it back and forth to/from the client over RPC then one has to create two separate classes for that object: One with the JDO annotations for persisting it on the server and another which is serialisable and used over RPC? I notice the Stock Watcher has separate classes and I can theorise why: Otherwise the gwt compiler would try to generate javascript for everything the persisted class referenced like JDO and com.google.blah.users.User, etc Also there may be logic on the server-side class which doesn't apply to the client and vice-versa. I just want to make sure I'm understanding this correctly. I don't want to have to create two versions of all my business object classes which I want to use over RPC if I don't have to.

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• Disposables, Using & Try/Catch Blocks

  - by Aren B

  Having a mental block today, need a hand verifying my logic isn't fubar'ed. Traditionally I would do file i/o similar to this: FileStream fs = null; // So it's visible in the finally block try { fs = File.Open("Foo.txt", FileMode.Open); /// Do Stuff } catch(IOException) { /// Handle Stuff } finally { if (fs != null) fs.Close(); } However, this isn't very elegant. Ideally I'd like to use the using block to dispose of the filestream when I'm done, however I am unsure about the synergy between using and try/catch. This is how i'd like to implement the above: try { using(FileStream fs = File.Open("Foo.txt", FileMode.Open)) { /// Do Stuff } } catch(Exception) { /// Handle Stuff } However, I'm worried that a premature exit (via thrown exception) from within the using block may not allow the using block to complete execution and clean up it's object. Am I just paranoid, or will this actually work the way I intend it to?

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• Silverlight 4.0 question - synchronous calls to asmx web service

  - by Anvar

  Hi, I have Silverlight problem. I have to deal with fairly large legacy application that has some web services exposed (regular asmx, not wcf). What I need to do is to build Silverlight app that consumes those web services. Due to business logic I need to have the same web method to be called from Silverlight app synchronously. I was able to build web services consumption but only asynchronously because that would be default Silverlight behavior. Is there a way to make asynchronous calls synchronous in Silverlight? I looked here and googled around but came across only wcf examples. I would appreciate if somebody would get me a code example for regular asmx web service. I use Silverlight 4.0. Thanks!

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• JQuery dirtyForm not working on text boxes in ajaxToolkit:TabPanel

  - by dustinson

  I'm a newb to jQ so please forgive my ignorance. I'm using Asa Wilson's plugin jquery.dirtyform.js to prompt a user of unsaved changes before they nav away from a page (ASP.Net C# 3.5). It basically loops through all controls and appends a class and handler to each input. Controls w/i an ajaxToolkit:TabPanel are ignored, unfortunately. I'd appreciate if anyone knows of this type of error and how to resolve it short of manually manipulating each control (as I have this logic in the master page). Thank you.

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• Kohana v3 ACL A2 with database support

  - by Asif

  Hi, I am using Kohana V 3.0.3. I was looking for ACL library and found from http://dev.kohanaphp.com/projects A2 Kohana's ACL module. Apparently it's found that, it manages Roles,Resources and Rules using config file and authenticate object basis. I want it to be dynamic, like Resources and Rules should be loaded from database dynamically if valid user logs in. Auth part is done now looking for ACL part. Is it possible to use same A2 module with database or need to rewrite own logic?

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• How to specify behavior of Java BufferedImage resize: need min for pixel rows instead of averaging

  - by tucuxi

  I would like to resize a Java BufferedImage, making it smaller vertically but without using any type of averaging, so that if a pixel-row is "blank" (white) in the source image, there will be a white pixel-row in the corresponding position of the destination image: the "min" operation. The default algorithms (specified in getScaledInstance) do not allow me a fine-grained enough control. I would like to implement the following logic: for each pixel row in the w-pixels wide destination image, d = pixel[w] find the corresponding j pixel rows of the source image, s[][] = pixel[j][w] write the new line of pixels, so that d[i] = min(s[j][i]) over all j, i I have been reading on RescaleOp, but have not figured out how to implement this functionality -- it is admittedly a weird type of scaling. Can anyone provide me pointers on how to do this? In the worse case, I figure I can just reserve the destination ImageBuffer and copy the pixels following the pseudocode, but I was wondering if there is better way.

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• problem with overriding autologin in spring security?

  - by sword101

  greetings everybody iam using spring security 3 remember me service as follows <http> <remember-me/> ....</http> and i want to perform some logic in the autologin so i tried to override the AbstractRememberMeServices as follows: package com.foo; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.security.core.Authentication; import org.springframework.security.web.authentication.RememberMeServices; public abstract class AbstractRememberMeServices implements RememberMeServices{ @Override public Authentication autoLogin(HttpServletRequest arg0, HttpServletResponse arg1) { System.out.println("Auto Login"); return null; } @Override public void loginSuccess(HttpServletRequest arg0, HttpServletResponse arg1, Authentication arg2) { System.out.println("Login Success"); } } but the autologin occurs with no action,the user auto login but the print statement is not printed? what's wrong?

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• What is the structure of a (Data Access) Service Class

  - by jiewmeng

  I learnt that I should be using service classes to persist entities into the database instead of putting such logic in models/controllers. I currently made my service class something like class Application_DAO_User { protected $user; public function __construct(User $user) { $this->user = $user } public function edit($name, ...) { $this->user->name = $name; ... $this->em->flush(); } } I wonder if this should be the structure of a service class? where a service object represents a entity/model? Or maybe I should pass a User object everytime I want to do a edit like public static function edit($user, $name) { $user->name = $name; $this->em->flush(); } I am using Doctrine 2 & Zend Framework, but it shouldn't matter

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• Psuedo-Backwards Builder Pattern?

  - by Avid Aardvark

  In a legacy codebase I have a very large class with far too many fields/responsibilities. Imagine this is a Pizza object. It has highly granular fields like: hasPepperoni hasSausage hasBellPeppers I know that when these three fields are true, we have a Supreme pizza. However, this class is not open for extension or change, so I can't add a PizzaType, or isSupreme(), etc. Folks throughout the codebase duplicate the same "if(a && b && c) then isSupreme)" logic all over place. This issue comes up for quite a few concepts, so I'm looking for a way to deconstruct this object into many subobjects, e.g. a pseudo-backwards Builder Pattern. PizzaType pizzaType = PizzaUnbuilder.buildPizzaType(Pizza); //PizzaType.SUPREME Dough dough = PizzaUnbuilder.buildDough(Pizza); Is this the right approach? Is there a pattern for this already? Thanks!

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• Class Design - Returning a List<Object> From <Object>

  - by Mike

  Given a simple class: public class Person { public string FirstName; public string LastName; public string GetFullName() { return FirstName + LastName; } } The user of this class will populate a List<Person> object by reading an Xml file or some other data source. Should the logic for populating the List be in the Person class or should it just remain in the calling class? In other words, should there be a public List<Persons> GetPersons() method in the Person class or in the calling class? Or should the data accessor be in another class altogether? I know this is a rather simplistic question but I'm just curious how others typically do it.

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• get current logged in userID in aspnet mvc membership

  - by FosterZ

  hi, i am trying to show a list of users of my application "school", when admin logs in then he can view all the users in list but when school principals logins, he should get only users of his school, So i thought to get the current loggedIn userId first and then by that userId i'll get schoolId since userId is foreign key in school table...once i'll get the schoolId i can show the members of that school. But my problem is how to get the UserID of currently loggedIn. I'm using MVC 1.0 Asp.Net -- "Membership" if my logic above is wrong then please tell me the alternate good idea, so that principal can see only his users list..

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• Best approach for authorisation rules

  - by Maciej

  I'm wonder about best approach of implementation auth. rules in Client-Server app using Business Objects. I've noticed common tactic is: - on DB side: implement one role for application, used for all app's users - definition users right and roles and assign users to proper group - Client side: add to Business Object's getters/setters rights checker allowing write / display data for particular user My concern is if this is really good approach from security perspective. It looks DB sends all information to Client, and then client's logic decide what to display or not. So, potentially advanced user can make query from their box and see/change anything. Isn't it?

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• Problem creating ObjectContext from different project inside solution.

  - by Levelbit

  I have two projects in my Solution. One implements my business logic and has defined entity model of entity framework. When I want to work with classes defined within this project from another project I have some problems in runtime. Actually, the most concerning thing is why I can not instantiate my, so called, TicketEntities(ObjectContext) object from other projects? when I catch following exception: The specified named connection is either not found in the configuration, not intended to be used with the EntityClient provider, or not valid. I found out it's brake at: public partial class TicketEntities : global::System.Data.Objects.ObjectContext { public TicketEntities() : base("name=TicketEntities", "TicketEntities") { this.OnContextCreated(); } with exception: Unable to load the specified metadata resource. Just to remind you everthing works fine from orginal project.

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• What's the Best Practice for Firing Manual OnClick Events?

  - by Tyler Murry

  Hey guys, I've got an XNA project that will be drawing several objects on the screen. I would like the user to be able to interact with those items. So I'm trying to build a method that checks to see which object the mouse is over, out of those which is the top most, and then fire an OnClick event for that object. Checking for the things above is not the problem, but where to actually put that logic is most of the issue. My initial feeling is that the checking should be handled by a master object - since it doesn't make sense for an object, who ideally knows only about itself, to determine information about the other objects. However, calling OnClick events remotely from the master object seems to be counter-intuitive as well. What's the best practice in this situation? Thanks, Tyler

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• Flowcharting tool/add-in for Visual Studio

  - by Rajah

  A 2 part question: Are flow-charts, as tool to analyze source-code, no longer considered useful? The reason I ask this question is that if you Google for source-code to flowchart tools for Visual Studio, there are no relevant results. Also, Microsoft does not seem to have a tool for this purpose. Are people just not using flowcharts that much any more? (I find them to be a great way to document complex logic in my code). Are there any VS tools that can take .Net (C#, VB.Net) code and convert it to a flowchart? (The only tool that I found is Aviosto's Visustin, which does not provide VS integration). Any other tools that you can recommend for this purpose?

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• best way to reference business objects from presentation layer..?

  - by Vytas999

  I want to develop an enterprise app that includes a WindowsForms presentation layer, middle-tier components for business logic and data access, and a MsSQL Server database. Middle-tier components should contain some business objects and will be called from presentation layer using .NET Remoting. Whitch is the best way (and why) to reference these business objects from presentation layer? a) Create class library project, implementing business objects. Reference this project from presentation layer and middle-tier layer. b) Create interface library project defining business objects. Create class library project implementing interfaces. Reference class library project from middle-tier layer. Reference interface library project from presentation layer. c) Create separate class library projects for middle-tier and presentation layer. Reference corresponding project from presentation layer.

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