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• The Project Location is Not Trusted error in Visual Studio

  - by SLC

  Quite a simple error, and the reason is obvious - I mapped a network drive, and I am opening the solution from it. Visual Studio gives me this error. I tried googling, and to my surprise, couldn't find a fix. I am running Visual Studio 2008. The solutions I found on google say I should run Mscorcfg.msc, but unfortunately, I don't seem to have that file anywhere on my computer. Nor do I seem to have anything in my control panel relating to .NET Framework. I can of course, run .NET applications fine, so the framework exists. Another solution suggested running caspol.exe, although this is .NET 2, which I also tried to no avail. Any ideas? I should add that I am trying to add the path to whatever trusted list there is.

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• How to I create an HQL query to return objects in a many to many relationship?

  - by Dave

  Hi there. I have an application that includes 2 classes Club and Article. These are mapped in Hibernate as a many to many relationship. As a result, hibernate has created a table called CLUB_ARTICLE which it uses to manage the many to many relation ship. The CLUB and ARTILCE tables have no direct reference to each other and the mapping is only represented in the CLUB_ARTICLE table. I need to create an HQL query that returns a list of articles for a particlular club. So I need to supply the club id and get back a list of Article objects that belong to it. For some reason, I just can't work out how to do this. Any help would be very much appriciated! Thanks.

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• Fluent NHibernate - Unable to parse integer as enum.

  - by Aaron Smith

  I have a column mapped to an enum with a convention set up to map this as an integer to the database. When I run the code to pull the data from the database I get the error "Can't Parse 4 as Status" public class Provider:Entity<Provider> { public virtual Enums.ProviderStatus Status { get; set; } } public class ProviderMap:ClassMap<Provider> { public ProviderMap() { Map(x => x.Status); } } class EnumConvention:IUserTypeConvention { public void Accept(IAcceptanceCriteria<IPropertyInspector> criteria) { criteria.Expect(x => x.Property.PropertyType.IsEnum); } public void Apply(IPropertyInstance instance) { instance.CustomType(instance.Property.PropertyType); } } Any idea what I'm doing wrong?

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• How to dynamically choose two fields from a Linq query as a result

  - by Dr. Zim

  If you have a simple Linq query like: var result = from record in db.Customer select new { Text = record.Name, Value = record.ID.ToString() }; which is returning an object that can be mapped to a Drop Down List, is it possible to dynamically specify which fields map to Text and Value? Of course, you could do a big case (switch) statement, then code each Linq query separately but this isn't very elegant. What would be nice would be something like: (pseudo code) var myTextField = db.Customer["Name"]; // Could be an enumeration?? var myValueField = db.Customer["ID"]; // Idea: choose the field outside the query var result = from record in db.Customer select new { Text = myTextField, Value = myValueField };

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• OpenGL billboard interpolation issue

  - by PeanutPower

  I have a billboard quad with a texture mapped onto it. This is basically some text with transparency. The billboard floats forwards and backwards from the camera's perspective. As the billboard moves away (and appears smaller) there is an flickering effect around the edges of the text where there is a stroke border on the actual texture. I think this is because interpolation is needed as the image which is normally X pixels wide is now shown as only a % of X and some pixels need to be merged together. I guess it's doing nearest neighbour or something? Can anyone point me in the right direction for opengl settings to control this, I'm guessing there is some way of preventing this effect from happening by adjusting the method for how the texture is handled ?

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• How can I hide a database column in the entity model?

  - by Nick Butler

  Hi. I'm using the Entity Framework 4 and have a question: I have a password column in my database that I want to manage using custom SQL. So I don't want the model to know anything about it. I've tried deleting the property in the Mapping Details window, but then I got a compilation error: Error 3023: Problem in mapping fragments starting at line 1660:Column User.Password in table User must be mapped: It has no default value and is not nullable. So, I made the column nullable in the database and updated the model. Now I get this error: Error 3004: Problem in mapping fragments starting at line 1660:No mapping specified for properties User.Password, User.Salt in Set Users. An Entity with Key (PK) will not round-trip when: Entity is type [UserDirectoryModel.User] Any ideas please? Thanks, Nick

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• How would I / could I obtain an reasonably comprehensive list of domain names?

  - by Simon

  I know that domain names are constantly changing, and I know there are a lot of them, but there is clearly a region of the domain name space which is stable. How would I go about getting a list, even a very big one? Such a thing must logically exist, even if it is in a distributed form, because the web's DNS servers resolve names to IP addresses. So in theory if I could poll all the DNS servers in the world at a moment in time I would have the complete list of mapped names. Is there a practical way of doing that? As an aside, does anyone have any good estimates of how many domain names exist at the moment?

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• Naive Bayesian for Topic detection using "Bag of Words" approach

  - by AlgoMan

  I am trying to implement a naive bayseian approach to find the topic of a given document or stream of words. Is there are Naive Bayesian approach that i might be able to look up for this ? Also, i am trying to improve my dictionary as i go along. Initially, i have a bunch of words that map to a topics (hard-coded). Depending on the occurrence of the words other than the ones that are already mapped. And depending on the occurrences of these words i want to add them to the mappings, hence improving and learning about new words that map to topic. And also changing the probabilities of words. How should i go about doing this ? Is my approach the right one ? Which programming language would be best suited for the implementation ?

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• Cstom handler on IIS 7.5 doesn't work

  - by Amit

  Hi, I am new to IIS 7.5. I have an application in asp.net 2.0, which has its own custom URL rewriting mechanism. All the requests on the browser with .htm will be mapped to .aspx. It works fine on IIS 6, but somehow I could not get it working on IIS 7.5. On IIS 6, I go to Application PropertiesConfigurationMappings and add a new extension .htm with the executable as aspnet_isapi.dll On IIS 7.5 i added a handler mapping, with path as .htm and executable as aspnet_ispai.dll But the request does not even come to global.asax. If i try the URL with .aspx extension, pages load properly. Any idea how to set up custom mappings in iis 7.5?

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• A trigger on hibernate (maybe this is called interceptor)

  - by Ittai

  Hi, I have a module which uses Hibernate as an ORM solution with EHCache as second level cache. I have another seperate module which inserts and updates the database. What I need is to have the ability to trigger an event when a row is inserted or updated. Let's say I have a Customers table and it is mapped to a Customer entity. I want some procedure to notify me that a new Customer has been added. Regarding the second seperate module it uses Hibernate also but at least for the time being they are not connected (I'm pointing this out as if someone thinks that I must share the Hibernate session (or something of the sort) between them then this is something I will consider). Please note that I have limited experience with Hibernate. Thanks in advance

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• solution on SP and EF & Ria Service

  - by KentZhou

  As EF 4.0 released, more support to SQL server Stored procedure. Complex Type can be generated automatically for result dataset of SP. But complex type not support by Ria Service. When I try to use ria service combined with EF 4.0, I want to get dataset by SP. This result is not mapped to any entity/table. Some sulutions suggested by community are: 1. Create view to map sp result. (but for EF, if there is no ID or primary, can't be map to any entity) 2. Create Entity to map sp result.(for this, you even need to map SP for CRUD even though I don't need CUD on this sp result) Also above solution can't be automated. As Database objects maybe changed with the time, auto update edm will lost above solution. So what's the solution? I want to put data operation back to DB as possible, so that many changes can be done in DB and no need to rebuild .net assemblies(this cause redeploy).

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• Unit test with Authlogic on Rails 3

  - by Puru puru rin..

  Hello, I would like to write some unit test with a logged user using Authlogic. To start right, I used some code hosted in http://github.com/binarylogic/authlogic_example. But I get an error after rake test, because of "test_helper.rb" and the following class: class ActionController::TestCase setup :activate_authlogic end Here is my error: NameError: undefined local variable or method `activate_authlogic' for I think this Authlogic example is mapped over Rails 2; maybe it's a little bit different on Rails 3. Is there an other example where I can take example about unit test? Many thanks.

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• Amazon AWS s3fs mount problem on Fedora 14

  - by Alex

  I successfully compiled and installed s3fs (http://code.google.com/p/s3fs/) on my Fedora 14 machine. I included the password credentials in /etc/ as specified in the guide. When I run: sudo /usr/bin/s3fs bucket_name /mnt/bucket_name/ it runs successfully. (note: the bucket name is the same as the folder name in /mnt/). When I run ls in /mnt/ I get the error "ls: cannot access bucket_name: Permission denied". When I run sudo chmod 640 /mnt/bucket_name I get "chmod: changing permissions of `bucket_name': Input/output error". When I reboot the machine I can access the folder /mnt/bucket_name normally but it is not mapped to the s3 bucket. So, basically I have two questions. 1) How do I access the folder (/mnt/bucket_name) as usual after I mount it to the s3 bucket and 2) How can I keep it mounted even after machine restart. Regards

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• Developer tool for configuring IIS6

  - by Marc Gravell

  edit: IIS6; I'm not sure IIS7 is an option in the immediate future... From a developer angle, I am constantly changing my IIS settings, or need to merge settings from other teams into different VMs. The "Save Configuration to Disk" has never really worked well for me. Because we are making lots of small changes, web installation projects have never really worked either... Tools aimed for the web-admin aren't necessarily a good fit for the developer - we have different aims and needs. Does anyone have a script / tool / utility that would allow us to quickly configure IIS? In particular: remove everything (start clean) add a load of virtual directories, each mapped to application base paths set as an application set the app-pool (we'll assume the app pool already exists) set the ASP.NET version to 2.x if needed from some find of flat input list (any format would do).

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• Unable to specify abstract classes in TPH hierarchy in Entity Framework 4

  - by Lee Atkinson

  Hi I have a TPH heirachy along the lines of: A-B-C-D A-B-C-E A-F-G-H A-F-G-I I have A as Abstract, and all the other classes are concrete with a single discriminator column. This works fine, but I want C and G to be abstract also. If I do that, and remove their discriminators from the mapping, I get error 3034 'Two entities with different keys are mapped to the same row'. I cannot see how this statement can be correct, so I assume it's a bug in some way. Is it possible to do the above? Lee

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• Using RouteExistingFiles to block access to existing files even if no route exists

  - by Michael Stum

  In ASP.net MVC 2, I can use routes.RouteExistingFiles = true; to send all requests through the routing system, even if they exist on the file system. Usually, this ends up hitting the "{controller}/{action}/{id}" route and throws an exception as the controller cannot be found. I do not want to use that route though (I have only a few URLs and they are specifically mapped), yet I would still like to prevent access to the file system. Basically I want to Whitelist pages using IgnoreRoute. Is there a built-in way to do this? My current approach is to still have the "{controller}/{action}/{id}" route and generate a 404 when this is hit, but I'm just wondering if something is built-in already?

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• Whats wrong with my backgroundwork method

  - by diver-d

  I am trying to get a background worker process working in a wpf application. it creates 2 files then crashes. BackgroundWorker worker = new BackgroundWorker(); worker.DoWork += delegate(object s, DoWorkEventArgs args) { CreateFile(i.ToString()); }; worker.RunWorkerAsync(); private void CreateFile(string fileName) { string path = string.Format(@"{0}\{1}.txt", directory, fileName); using (StreamWriter sw = new StreamWriter(path)) { sw.WriteLine(fileName); } } I get this error " The requested operation cannot be performed on a file with a user-mapped section open." what am I doing wrong? Any help would be great

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• How to get the row number of the QComboBox in QTableWidget

  - by dreamxiuhuishan

  Here is the code, but it dos not work. Who can create the code. Thanks very much! void add() { QComboBox *ziduan = new QComboBox; ziduan->addItem("??","nd"); int row =0; int col =1; QSignalMapper* signalMapper = new QSignalMapper(this); connect(ziduan, SIGNAL(currentIndexChanged(int)), signalMapper, SLOT(map())); signalMapper->setMapping(ziduan, QString("%1-%2").arg(row).arg(col)); connect(signalMapper, SIGNAL(mapped(const QString &)),this, SIGNAL(changeZiduan(const QString &))); } void sqlGenerator::changeZiduan(const QString &position) { QStringList coordinates = position.split("-"); int row = coordinates[0].toInt(); int col = coordinates[1].toInt(); }

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• Why won't asp.net create cookies in localhost?

  - by James McConnell

  Okay, this is really kinda starting to bug me. I have a simple Web project setup located at: "C:\Projects\MyTestProject\". In IIS on my machine, I have mapped a virtual directory to this location so I can run my sites locally (I understand I can run it from Visual Studio, I like this method better). I have named this virtual directory "mtp" and I access it via http://localhost/mtp/index.aspx. All this is working fine. However, whenever I try to create a cookie, it simply never gets written out? I've tried this in FF3 and IE7 and it just plain won't write the cookie out. I don't get it. I do have "127.0.0.1 localhost" in my hosts file, I can't really think of anything else I can do. Thanks for any advice. James

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• How to convert Facebook created_time to Java Date?

  - by smitty

  Hi, I have a FQL statement like this: String query = "SELECT post_id, actor_id, target_id, created_time, message FROM stream WHERE source_id in (SELECT target_id FROM connection WHERE source_id=<userID>) AND is_hidden = 0"; I just wondering what kind of time Facebook gives to me. The result of my statement will be mapped to a wrapper object (wallpost). myDate.setTime(wallpost.getCreated_time()); gives me no valid date. Does anyone have an idea what kind of date Facebook returns and how to match it to Date()? thanks in advance!

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• Bidirectional one-to-many associations with indexed collections in NHibernate

  - by Jørn Schou-Rode

  Last summer, I asked a question regarding how to add new object to an IList mapped as a one-to-many with NHibernate. One of the answers let me to this paragraph in the documentation: Please note that NHibernate does not support bidirectional one-to-many associations with an indexed collection (list, map or array) as the "many" end, you have to use a set or bag mapping. While I am pretty sure I understand what this paragraph says, I have no idea why or how to work around this limitation. As I am now again working with a model that seems to require a "bidirectional one-to-many association with an index collection", I figured the time was right for follow-up questions: Why does NHibernate have this limitation on associations? It is my impression that the guys behind NHibernate are quite clever, so I assume there is a pretty good reason. What are the common workarounds for this shortcoming? Making the collection a non-indexed bag and adding an explicit Position property to the child class? Any better solutions?

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• Why is there a limit of max 20 parameters to a clojure function

  - by GuyC

  Hi, there seems to be a limit to the number of parameters a clojure function can take. When defining a function with more than 20 parameters I receive the following: Obviously this can be avoided, but I was hitting this limit porting the execution model of an existing DSL to clojure, and I have constructs in my DSL like the following, which by macro expansion can be mapped to functions quite easily except for this limit: (defAlias nn1 ((element ?e1) (element ?e2)) number "@doc features of the elements are calculated for entry into the first neural network, the result is the score computed by the latter" (nn1-recall (nn1-feature00 ?e1 ?e2) (nn1-feature01 ?e1 ?e2) ... (nn1-feature89 ?e1 ?e2))) which is a DSL statement to call a neural network with 90 input nodes. Can work around it of course, but was wondering where the limit comes from. Thanks.

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• nHibernate multiple classes pointing to same table?

  - by Amitabh

  Is it a good idea to create a lighter version of an Entity in some cases just for performance reason pointing to same table but with fewer columns mapped. E.g If I have a Contact Table which has 50 Columns and in few of the related entities I might be interested in FirstName and LastName property is it a good idea to create a lightweight version of Contact table. E.g. public class LightContact { public int Id {get; set;} public string FirstName {get; set;} public string LastName {get; set;} } Also is it possible to map multiple classes to same table?

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• How the kernel gives seg. fault for a scenario like this?

  - by bala1486

  I have a doubt in accessing some invalid data. How will the OS cause segmentation fault for a scenario like this? Suppose a date segment has some 100 bytes. This will be mapped and a page table entry will be created. But the page size is 4K. Consider the data segment is aligned with this page boundary. So at first consider accessing a valid data within the 100 bytes. So now the page table entry is in TLB. Next if you try to access some invalid data between the 100 and 4K, the entry is there in page table and will it be allowed to access the invalid data??? Thanks, Bala

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• NLB and Host Header Value

  - by Hafeez

  Background: We are using MOSS 2007 in farm configuration, 2 WFE, 1 Indexer and SQL Server. MS NLB is used for load balancing. Host header value mapped to Virtual IP of Cluster in DNS, is used while creating the web applications in MOSS and all are sharing port 80. Problem: When client tries to access the web application that are configured with host header values. Both of WFEs Hangs for 5 minutes, they stop responding to ping and browser shows 'Page not found'. In the Application Log on the WFE, this error is registered "provider: TCP Provider, error: 0 - The semaphore timeout period has expired". Interestingly, the web application with no host header value and hosted on different ports is working correctly. Any clue to solve this problem will be helpful. Thks. Hafeez

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