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  • How can I unit test a class which requires a web service call?

    - by Chris Cooper
    I'm trying to test a class which calls some Hadoop web services. The code is pretty much of the form: method() { ...use Jersey client to create WebResource... ...make request... ...do something with response... } e.g. there is a create directory method, a create folder method etc. Given that the code is dealing with an external web service that I don't have control over, how can I unit test this? I could try and mock the web service client/responses but that breaks the guideline I've seen a lot recently: "Don't mock objects you don't own". I could set up a dummy web service implementation - would that still constitute a "unit test" or would it then be an integration test? Is it just not possible to unit test at this low a level - how would a TDD practitioner go about this?

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  • Main class passes dbConn obj to all its services, I need to change the dbConn for one of its services. - suggestion for design pattern

    - by tech_learner
    There is this main class and there are several services ( which uses db connection to retrieve data ) These services are initialized in the main class db properties are obtained from the property file and then dbconnection is opened by calling a method dbOpen() written in the main class and the resultant connection object is set to the service objects by iterating through the list of services and by calling setConnection method on the service note: that the services are instantiated in the main class and the main class is not a superclass for services. I also need to mention that there is this recycle db connection scenario only main class is aware of. /** connects to DB, optionally recycling existing connection), * throws RuntimeException if unable to connect */ private void connectDb(boolean recycle) { try { if (recycle) { log.status( log.getSB().append("Recycling DB Connection") ); closeDb(); } openDb(); for ( int i = 0 ; i < service.length ; i++ ) { service[i].setConnection(db); } } One of the service needs to use a different database, what is the best design pattern to use?

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  • How to build a web service to detect content change(s) at an external website?

    - by Global nomad
    I'm researching ways to build a web service to periodically traverse a predetermined list of web pages (of another external website) to detect if a page's content has changed from editing of the page, and deletion of the page. The end goal is to have this web service post push-notification events to mobile devices. FYI, I've searched and read "Questions with similar titles" here. Thank you for sharing your answers.

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  • System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host

    - by coffeeaddict
    We have 2 identical database tables on our dev server. In both is a table that holds an X509Certificate2 data in one of its fields. When I grab the cert along with the password that I've been using all along, it works over the first database just fine. I run the same code though over the 2nd database and get this error and I don't get why if the setup is exactly the same and the database is also on this server. So I'm not sure why when I switch my connection string to talk to Database2, even though it's setup the same and the code I'm running over it is the same, it complains. Here's the stack trace: An existing connection was forcibly closed by the remote host Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [SocketException (0x2746): An existing connection was forcibly closed by the remote host] System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) +232 [IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.] System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) +7035903 System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count) +58 System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest) +116 System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) +123 System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest) +86 System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) +123 System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest) +86 System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) +123 System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest) +86 System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) +123 System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest) +7184357 System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult) +217 System.Threading.ExecutionContext.runTryCode(Object userData) +376 System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) +0 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) +98 System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result) +1134 System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size) +88 System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size) +20 System.Net.ConnectStream.WriteHeaders(Boolean async) +360 [WebException: The underlying connection was closed: An unexpected error occurred on a send.] System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request) +857631 System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request) +10 System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +243 Pmall.PayPal.PayPalApi.PayPalAPIAASoapBinding.SetExpressCheckout(SetExpressCheckoutReq SetExpressCheckoutReq) in C:\www\ssss\ssss\ssss\ssss\Reference.cs:1304 ssss.PayPal.ExpressCheckout.PayPalCheckout.SetExpressCheckout(PaymentDetailsType[] paymentDetails, String returnURL, String cancelURL, PayPalPaymentFlowType paymentFlowType) in C:\www\ssss\ssss\ssss\PayPalCheckout.cs:96 ssss.Web.ssss.SetExpressCheckout() in C:\www\ssss\ssss\ssss.aspx.cs:83 ssss.Web.ssss.Page_Load(Object sender, EventArgs e) in C:\www\ssss\ssss\Register.aspx.cs:24 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +42 System.Web.UI.Control.OnLoad(EventArgs e) +132 System.Web.UI.Control.LoadRecursive() +66 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428

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  • How does LinqPad support WCF Data Services?

    - by user341127
    LinqPad supports WCF Data Services. If you assign an URL, such as http://services.odata.org/Northwind/Northwind.svc/. It will list all available data objects and you can query them. I guess LinqPad generates all available data classes at run time by reflection.Emit. I am wondering who can show me to how to do so. Or maybe someone has done it before. Any feedback are appreciated. Ying

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  • What are the basic applications of Windows services?

    - by infant programmer
    I have been quite comfortable with windows-services, I have been practicing since from last two weeks. Would you please explain me some of the basic applications of Windows service, so that I can take it as homework and practice. (it need not be too basic) I have already designed and implemented a project/service which is meant for closing all the browsers, when I open a program(or process) saying "Gtalk". I am interested and very eager to learn more things about Windows services. Regards.

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  • Using Active Directory Web Services in .Net application

    - by Iain Carlin
    Hello, I'm trying to build a .Net application to interrogate Active Directory. From my research, Windows 2008 R2 has Active Directory Web Services (ADWS) built in. I can't find any details or examples anywhere on the web which tell me whether I should be able to use ADWS in a .Net application to read/write AD information. Should I simply be able to add a web reference or is ADWS just for Powershell use. Cheers, Iain

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  • use Services in MVVM

    - by netmajor
    I want to use Services(WCF/RIA /Web) to take data from Entity Data Model class (maybe NHibernate class) and prepared it special for View layer binding. I have few Silverlight page, so should I create for each page separate service class ? Or create one interface and all method will implement it in one service class? Do You have some advice helped with my with services ?

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  • Multiple client projects to one server project w/ Silverlight & RIA Services Beta

    - by Dale Halliwell
    The type or namespace name 'Resources' does not exist in the namespace 'MyWebProject.Web' (are you missing an assembly reference?) C:\Users\...\MySecondProject\Generated_Code\MyWebProject.Web.g.cs I am having some problems trying to add a second SL client project to my (Ria services) SL Business Application. It has to do with the way the shared Resources files on the Web project are linked to from my new SL client project (the SL client project that was generated by the Business App template works fine). The same problem was brought up in the SL forums but copying the Web folder from my existing SL client doesn't seem to work. How can I add a second SL client project using RIA services to the solution of an existing SL Business Application without these problems over shared resources? Should I avoid the Business Application solution template for solutions with multiple SL clients since it seems to presume only a single client app will be sharing the resource files?

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  • How are distributed services better than distributed objects?

    - by Gabriel Šcerbák
    I am not interested in the technology e.g. CORBA vs Web Services, I am interested in principles. When we are doing OOP, why should we have something so procedural at higher level? Is not it the same as with OOP and relational databases? Often services are supported through code generation, apart from boilerplate, I think it is because we new SOM - service object mapper. So again, what are the reasons for wervices rather than objects?

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  • implementation Services in MVVM

    - by netmajor
    I want to use Services(WCF/RIA /Web) to take data from Entity Data Model class (maybe NHibernate class) and prepared it special for View layer binding. I have few Silverlight page, so should I create for each page separate service class ? Or create one interface and all method will implement it in one service class? Do You have some advice helped with my with services ?

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  • Continous integration with Reporting Services

    - by SDReyes
    I'm implementing a continuous integration environment with SVN and reporting services. The reports are stored in the SVN repository. when a change occurs, they are automatically downloaded from the repository, and any file changed should be uploaded to the reporting services server. How could you automate the upload/update process for .rdl files?

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  • Web Services API Versioning

    - by Paul Izzy
    I offer a small Web Services API to my clients which I plan to evolve over time. So I need some sort of versioning, but I can't find any information about how you do something like that. Is there a best practise? How can I keep adding new functionality without breaking compatibility with the web services consumers?

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  • What web server should I use if I want to run Java code behind?

    - by Boaz
    At the moment, I have lot's of Java which does all kind of nifty stuff and I'm happy with it. The code is command line driven which have been great so far, but I recently decided I want to make the functionality available through web-services. Since my is complex and I'm happy with the way it's written , I don't want go through the pain of porting it to other languages. So I set out on a google journey to find out what web servers exist (on a Linux machine, though it's interesting to hear the answer without that limitation). From what I could find, it seems that there are two viable options: Apache Tomcat and Sun Java Server. What are the reason to choose one on top of the other? what are the strength of each and what are the weaknesses? Or, perhaps, there is a third one which is much easier, flexible and less cumbersome. Anyone?

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  • Beginner to PHP web services

    - by Manjula
    What is the best way to implement web services in PHP? I have heard about libraries like NuSOAP and WSO2 web service platform, But don't know what is the best ( or a good and easy to learn) for using web service in PHP?

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  • What web server should I use if I want to run Java code behind it?

    - by Boaz
    At the moment, I have lot's of Java which does all kind of nifty stuff and I'm happy with it. The code is command line driven which have been great so far, but I recently decided I want to make the functionality available through web-services. Since my is complex and I'm happy with the way it's written , I don't want go through the pain of porting it to other languages. So I set out on a google journey to find out what web servers exist (on a Linux machine, though it's interesting to hear the answer without that limitation). From what I could find, it seems that there are two viable options: Apache Tomcat and Sun Java Server. What are the reason to choose one on top of the other? what are the strength of each and what are the weaknesses? Or, perhaps, there is a third one which is much easier, flexible and less cumbersome. Anyone?

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  • WCF v.s. legacy ASP.Net Web Services

    - by George2
    Duplicate: although this is a good discussion, this is a duplicate of Web Services — WCF vs. Standard. Please consider adding any new information to the earlier question and closing this one. Could anyone recommend me some documents to describe why WCF is better than legacy ASP.Net web services? I am especially interested in performance and security. Thanks!

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  • Web Services Primer for a WinForms Developer?

    - by Unicorns
    I've been writing client/server applications with Winforms for about six years now, but I have yet to venture into the web space (neither ASP.NET nor web services). Given the direction that the job market has been heading for some time and the fact that I have a basic curiosity, I'd like to get involved with writing web services, but I don't know where to start. I've read about various options (XML/SOAP vs. JSON, REST vs...well, actually I don't know what it's called, etc.), but I'm not sure what sort of criteria are in play when making the determination to use one or the other. Obviously, I'd like to leverage the tools that I have (Visual Studio, the .NET framework, etc.) without hamstringing myself into only targeting a particular audience (i.e. writing the service in such a way as to make it difficult to consume from a Windows Mobile/Android/iPhone client, for example). For the record, my plan--for now--is to use WCF for my web service development, but I'm open to using another .NET approach if that's advisable. I realize that this question is pretty open-ended so it may get closed, but here are some things I'm wondering: What are some things to consider when choosing the type of web service (REST, etc.) I intend to write? Is it possible (and, if so, feasible) to move from one approach to another? Can web services be written in an event-driven way? As I said I'm a Winforms developer, so I'm used to objects raising events for me to react to. For instance, if I have two clients connected to my service, is there a way for me to "push" information to one of them as a result of an action by the other? If this is possible, is this advisable or am I just not thinking about it correctly? What authentication mechanisms seem to work best for public-facing services? What about if I plan to have different types of OS'es and clients connecting to the service? Is there a generally accepted platform-agnostic approach? In the line of authentication, is this something that I should be doing myself (authenticating an managing sessions, etc.) or is this something should be handled at the framework level and I just define exactly how it should work? If that's the case, how do I tell who the requester has authenticated themselves as? I started writing an authentication mechanism (simple username/password combinations stored in the database and a corresponding session table with a GUID key) within my service and just requiring that key to be passed with every operation (other than logging in, of course), but I want to make sure that I'm not reinventing the wheel here. However, I also don't want to clutter up the server with a bunch of machine user accounts just to use Basic authentication. I'm also under the impression that Digest (and of course Windows) authentication requires a machine (or AD) user account.

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