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  • MVVM application architecture, where to put dependency injection configuration class, BusinessLayer and Common interfaces?

    - by gt.guybrush
    Planning my architecture for an MVVM application I come to this: MyApp.UI View MyApp.BusinessLayer ViewModel MyApp.DataAccessLayer RepositoryImplEF MyApp.DomainLayer DomainObject RepositoryInterface MyApp.Common Logging Security Utility (contains some reflection method used by many levels) CustomException MyApp.UnitTest I was inspired by Domain-driven-desing, test-driven-development and onion architecture but not sure to have done all well. I am not sure of a couple of things: where to put dependency injection configuration class? In the common project? where to put BusinessLayer interfaces? in Domain layer? where to put Common interfaces? in Domain layer? But Common in referenced from domain (for some reflection utilities and for DI if the response to 1. is yes) and circular reference isn't good

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  • Enterprise Architecture IS (should not be) Arbitrary

    - by pat.shepherd
    I took a look at a blog entry today by Jordan Braunstein where he comments on another blog entry titled “Yes, “Enterprise Architecture is Relative BUT it is not Arbitrary.”  The blog makes some good points such as the following: Lock 10 architects in 10 separate rooms; provide them all an identical copy of the same business, technical, process, and system requirements; have them design an architecture under the same rules and perspectives; and I guarantee your result will be 10 different architectures of varying degrees. SOA Today: Enterprise Architecture IS Arbitrary Agreed, …to a degree….but less so if all 10 truly followed one of the widely accepted EA frameworks. My thinking is that EA frameworks all focus on getting the business goals/vision locked down first as the primary drivers for decisions made lower down the architecture stack.  Many people I talk to, know about frameworks such as TOGAF, FEA, etc. but seldom apply the tenants to the architecture at hand.  We all seem to want to get right into the Visio diagrams and boxes and arrows and connecting protocols and implementation details and lions and tigers and bears (Oh, my!) too early. If done properly the Business, Application and Information architectures are nailed down BEFORE any technological direction (SOA or otherwise) is set.  Those 3 layers and Governance (people and processes), IMHO, are layers that should not vary much as they have everything to do with understanding the business -- from which technological conclusions can later be drawn. I really like what he went on to say later in the post about the fact that architecture attempts to remove the amount of variance between the 10 different architect’s work.  That is the real heart of what EA is about; REMOVING THE ARBRITRARITY.

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  • Podcast Show Notes: Redefining Information Management Architecture

    - by Bob Rhubart-Oracle
    Nothing in IT stands still, and this is certainly true of business intelligence and information management. Big Data has certainly had an impact, as have Hadoop and other technologies. That evolution was the catalyst for the collaborative effort behind a new Information Management Reference Architecture. The latest OTN ArchBeat series features a conversation with Andrew Bond, Stewart Bryson, and Mark Rittman, key players in that collaboration. These three gentlemen know each other quite well, which comes across in a conversation that is as lively and entertaining as it is informative. But don't take my work for it. Listen for yourself! The Panelists(Listed alphabetically) Andrew Bond, head of Enterprise Architecture at Oracle Oracle ACE Director Stewart Bryson, owner and Co-Founder of Red Pill Analytics Oracle ACE Director Mark Rittman, CIO and Co-Founder of Rittman Mead The Conversation Listen to Part 1: The panel discusses how new thinking and new technologies were the catalyst for a new approach to business intelligence projects. Listen to Part 2: Why taking an "API" approach is important in building an agile data factory. Listen to Part 3: Shadow IT, "sandboxing," and how organizational changes are driving the evolution in information management architecture. Additional Resources The Reference Architecture that is the focus of this conversation is described in detail in these blog posts by Mark Rittman: Introducing the Updated Oracle / Rittman Mead Information Management Reference Architecture Part 1: Information Architecture and the Data Factory Part 2: Delivering the Data Factory Be a Guest Producer for an ArchBeat Podcast Want to be a guest producer for an OTN ArchBeat podcast? Click here to learn how to make it happen.

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  • A Better Way to Plan, Execute and Manage Enterprise Architecture

    - by JuergenKress
    IT Strategies from Oracle is an authorized library of guidelines and reference architectures that will help you better plan, execute, and manage your enterprise architecture and IT initiatives. The IT Strategies from Oracle library offers two types of best practice documents: practitioner guides containing pragmatic advice and approaches, and reference architectures containing the proven technology patterns to jumpstart your initiative. The IT Strategies from Oracle library can help you establish a reliable set of principles and standards to guide your use of Oracle technology. We will expand this library over time across all of Oracle's technologies. Today, you can access: Overview documents providing an introduction to all the resources available in the library and best practices maturity models Oracle Reference Architectures covering the application infrastructure foundation, management and monitoring, security, software engineering, service-oriented integration, service orientation, user interaction, engineered systems, and a master glossary. Enterprise Technology Strategies for Service-Oriented Architecture offering practitioner guides on creating a SOA roadmap, frameworks for governance, determining ROI, identifying services, software engineering, and white papers. Enterprise Technology Strategies for Event-Driven Architecture offering practitioner guides on creating an EDA roadmap and reference architectures on an EDA foundation and EDA infrastructure. Enterprise Technology Strategies for Business Process Management including practitioner guides on creating a BPM roadmap, business process engineering, governance, and reference architectures on a BPM foundation and BPM infrastructure. Enterprise Technology Strategies for Cloud Computing including reference architectures on a Cloud foundation and Cloud infrastructure. Enterprise Technology Strategies for Business Analytics includes a practitioner guide for creating a BA roadmap, and reference architectures for a BA foundation and BA infrastructure. Get the Oracle Enterprise Architecture content here. SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Facebook Wiki Mix Forum Technorati Tags: Architecture,SOA Community,Oracle SOA,Oracle BPM,Community,OPN,Jürgen Kress

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  • Undefined reference to cmph functions even after installing cpmh library

    - by user1242145
    I am using gcc 4.4.3 on ubuntu. I installed cmph library tools 0.9-1 using command sudo apt-get install libcmph-tools Now, when I tried to compile example program vector_adapter_ex1.c , gcc is able to detect cmph.h library in its include file but is showing multiple errors like vector_adapter_ex1.c:(.text+0x93): undefined reference to cmph_io_vector_adapter' vector_adapter_ex1.c:(.text+0xa3): undefined reference tocmph_config_new' vector_adapter_ex1.c:(.text+0xbb): undefined reference to cmph_config_set_algo' vector_adapter_ex1.c:(.text+0xcf): undefined reference tocmph_config_set_mphf_fd' even though, these are all defined in the source code of the cmph library. Could anyone tell the error that might have occurred or suggest an alternate method to go about building minimal perfect hash functions.

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  • PHP: variable-length argument list by reference?

    - by GetFree
    Is it possible to create a PHP function that takes a variable number of parameters all of them by reference? It doesn't help me a function that receives by reference an array of values nor a function that takes its arguments wrapped in an object because I'm working on function composition and argument binding. Don't think about call-time pass-by-reference either. That thing shouldn't even exist.

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  • SQL reporting services reference

    - by SonOfOmer
    Hi everyone, I want to add service reference to SQL reporting services on local machine. In Reporting Service Configuration Manager under Web Service URL tab I have report service URL exposed, I have tried to add web reference to project with that Web Reference URL, but it can not be found. Please tell me am I missing something or is this right way to to? Thanks a lot.

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  • Unable to add CRM 2011's Organization service as Service Reference to VS project

    - by Scorpion
    I have problem accessing Organization Service when I try to add it as a Service Reference in Visual Studio. However, I can Access the Service in browser. I have tried to add OrganizationData service and there is no issue with that. An Error occurred while attempting to find service at 'http://xxxxxxxx/xxxxx/XRMServices/2011/Organization.svc'. Error Details There was an error downloading 'http://xxxxxxxx/xxxxx/XRMServices/2011/Organization.svc/_vti_bin/ListData.svc/$metadata'. The request failed with HTTP status 400: Bad Request. Metadata contains a reference that cannot be resolved: 'http://xxxxxxxx/xxxxx/XRMServices/2011/Organization.svc'. Metadata contains a reference that cannot be resolved: 'http://xxxxxxxx/xxxxx/XRMServices/2011/Organization.svc'. If the service is defined in the current solution, try building the solution and adding the service reference again.

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  • When are reference files(dlls) loaded?

    - by Daniel
    I wrote a program that makes a reference to Microsoft.Web.Administration.dll, which is not present on Windows Server 2003. The program checks for the os and does not reference the dll if the os is 2003. if(OSVersion == WindowsServer2003) //do the job without referencing the Microsoft.Web.Administration.<br> else if(OSVersion == WindowsServer2008) //reference the Microsoft.Web.Administration.dll file.<br> When I tested this program on Windows Server 2003, an error occured telling me it couldn't locate the Microsoft.Web.Administration.dll. But when I separated the if-else block into 2 different methods as below, and the error did not occur. if(OSVersion == WindowsServer2003) //do the job without referencing the Microsoft.Web.Administration.<br> else if(OSVersion == WindowsServer2008) //DoIt2008Style(); So I wanted to know about reference file loading time in more detail. could you point me to some resources?

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  • Big, Thick Reference Books (PHP / MySQL / Unix) [closed]

    - by Josh K
    I'm looking for in-depth reference books / guides in PHP, MySQL, and Unix. I'm aware there other other questions pertaining to good books for short references of function names, or detailed beginner guides to these systems. I'm looking for something different. I want a book that I can either use as a quick but in-depth (decent write up, not a pocket reference guide) reference to common functions (JOINS, string manipulation, Regular Expressions, etc) while also providing a detailed inner workings explanation on the system itself.

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  • Cannot initialize non-const reference from convertible type

    - by Julien L.
    Hi, I cannot initialize a non-const reference to type T1 from a convertible type T2. However, I can with a const reference. long l; const long long &const_ref = l; // fine long long &ref = l; // error: invalid initialization of reference of // type 'long long int&' from expression of type // 'long int' Most problems I encountered were related to r-values that cannot be assigned to a non-const reference. This is not the case here -- can someone explain? Thanks.

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  • Changing the namespace for a Web Reference

    - by kdmurray
    When I add a web reference to a project, it comes up with a default namespace of: com.wpdevs.myservice. This is the namespace I'd have expected it to use in the application. When I add the using statement to the project, I have to add: using MyProject.com.wpdevs.myservice; I'd like to find a way to eliminate having to reference the project name in the using statement. The project I'm putting together now is destined to be converted into a VS Project template and having that rather strange reference in there, or even having a per-project reference, isn't something I'd like to have in the project.

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  • Visual Studio Snippets: How to reference an assembly that is not in the GAC

    - by user334220
    Hi, I have a 3rd party non-signed assembly that I want to reference in several projects. So I created a snippet to add the reference and the relative imports I tried the following, and several variations with full paths, without file:// etc, to no avail. Any ideas? ... <Snippet> <References> <Reference> <Assembly>MyAssemly.dll</Assembly> <Url>file://C:\Program Files\MyProduct</Url> </Reference> </References> <Imports> <Import> ...

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  • C++ Reference Book

    - by m00st
    Can someone list a C++ book that is just a reference to the standard library? I don't need a "learning c++" book just one that is a reference. Or at least official documentation or something? Googling only reveals "fan-site" reference.

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  • What enterprise architecture tools support DoDAF 2.0?

    - by David Hunt
    What tools best support the DoD Architecture Framework (DoDAF) Version 2.0, including support for transfer of the architecture data in accordance with the DoDAF Meta Model (DM2) Physical Exchange Specification (PES)? My initial research found that MagicDraw and Casewise claim support for version 2.0; and several other tools have support for earlier (or unspecified) DoDAF/MoDAF versions including Sparx Enterprise Architect, Troux, IDS Scheer ARIS, Artisan Studio and Rational System Architect. Experiences with any enterprise architecture tools and DoDAF 2.0 would be appreciated. The immediate need is for Data and Information Viewpoint models (DIV-1, DIV-2/OV-7, DIV-3/SV-11), but models in the other Viewpoints will be developed. Thanks -

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  • Reasons not to use MVC architecture for web application

    - by jaywon
    In the past I have primarily built all my web applications using an N-tier architecture, implementing the BLL and DAL layers. Recently, I have started doing some RoR development as well as looking into ASP.NET MVC. I understand the differences between the different architectures(as referenced by some other SO posts), but I can't really think of any reasons why I wouldn't choose an MVC model going forward. Is there any reasons/times in your experience when an MVC architecture would not be suitable, or any reasons why you would choose a BLL/DAL architecture instead?

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  • Cloud Agnostic Architecture?

    - by Dave
    Hi, I'm doing some architecture work on a new solution which will initially run in Windows Azure. However I'd like the solution (or at least the architecture/design) to be Cloud Agnostic (to whatever extent is realistic). Has anyone done any work on this front or seen any good white papers/blog posts? Our highlevel architecture will consist of a payload being sent to a web service (WCF for instance), this will be dumped on a queue (for arguments sake) and a worker process will grab messages off this queue and proccess them. There will be a database of customer information which we'd ideally like to keep out of the cloud however there are obvious performance considerations. Keen to hear other's thoughts. Cheers Dave

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  • Python: get windows OS version and architecture

    - by Thorfin
    First of all, I don't think this question is a duplicate of http://stackoverflow.com/questions/2208828/detect-64bit-os-windows-in-python because imho it has not been thoroughly answered. The only approaching answer is: Use sys.getwindowsversion() or the existence of PROGRAMFILES(X86) (if 'PROGRAMFILES(X86)' in os.environ) But: Can we completely rely on the windows environment variable PROGRAMFILES(X86)? I fear that anyone can create it, even if it's not present on the system. How can we use sys.getwindowsversion() to get the architecture? Regarding sys.getwindowsversion(): The link http://docs.python.org/library/sys.html#sys.getwindowsversion leads us to http://msdn.microsoft.com/en-us/library/ms724451%28VS.85%29.aspx but I don't see anything related to the architecture (32bit/64bit). Moreover, the platform element if the returned tuple seems to be independent of the architecture. One last note, I'm using python 2.5. Thanks!

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  • Regular Expressions Reference Tables Updated

    - by Jan Goyvaerts
    The regular expressions reference on the Regular-Expressions.info website was completely overhauled with the big update of that site last month. In the past, the reference section consisted of two parts. One part was a summary of the regex features commonly found in Perl-style regex flavors with short descriptions and examples. This part of the reference ignored differences between regex flavors and omitted most features that don’t have wide support. The other part was a regular expression flavor comparison that listed many more regex features along with YES/no indicators for many regex flavors, but without any explanations of the features. When reworking the site, I wanted to make the reference section more detailed, with descriptions and examples of all the syntax supported by the flavors discussed on the site. Doing that resulted in a reference that lists many features that are only supported by a few regex flavors. For such a reference to be usable, it needs to indicate which flavors support each feature. My original design for the new reference table used two rows for each feature. The first row had 4 columns with a label, syntax, description, and example, similar to the old reference tables. The second row had 20 columns indicating which versions of which flavors support these features. While the double-row design allowed all the information to fit within the table without requiring horizontal scrolling, it made it more difficult to quickly scan the tables for the feature you’re looking for. To make the new reference tables easier to read, they now have only a single row for each feature. The first 4 columns are the same as before. The remaining two columns show which versions of two regular expression flavors support the feature. You can use the drop-down lists above the table to choose the flavors the table should indicate. The site uses cookies to allow the flavor choices to persist while you navigate the reference. The result of this latest update is that the new regex tables are now just as easy to read as the ten-year-old tables on the old site were, while still covering all the features big and small of all the flavors discussed on the site.

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  • Win 2008 single server development environment (architecture)

    - by Tommy Jakobsen
    I have a few questions about a test development environment that I’m setting up on this server: Intel Core i7-920 Quadcode incl. Hyper Threading 8 GB DDR3 RAM 2x 750 GB SATA-II (probably software RAID 1) The server is going to support max 5 users, maybe 10 when stressed. I was hoping that I could run all the following products on the same server: Windows Server 2008 R2 x64 w/ IIS SQL Server 2008 x64 (R2 when released) Team Foundation Server 2010 Sharepoint Foundation 2010 I know this sounds overkill, but remember that this is for development purpose and testing. This is not a production environment. My question if this will be possible at all? Should I run it all on one Windows 2008 installation, or should I run it in multiple virtual environments using Hyper-V? What do you think?

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  • Which reference provides your definition of "elegant" or "beautiful" code?

    - by Donnied
    This question is phrased in a very specific way - it asks for references. There was a similar question posted which was closed because it was considered a duplicate to a good code question. The Programmers FAQ points out that answers should have references - or its just an unproductive sharing of (seemingly) baseless opinions. There is a difference between shortest code and most elegant code. This becomes clear in several seminal texts: Dijkstra, E. W. (1972). The humble programmer. Communications of the ACM, 15(10), 859–866. Kernighan, B. W., & Plauger, P. J. (1974). Programming style: Examples and counterexamples. ACM Comput. Surv., 6(4), 303–319. Knuth, D. E. (1984). Literate programming. The Computer Journal, 27(2), 97–111. doi:10.1093/comjnl/27.2.97 They all note the importance of clarity over brevity. Kernighan & Plauger (1974) provide descriptions of "good" code, but "good code" is certainly not synonymous with "elegant". Knuth (1984) describes the impo rtance of exposition and "excellence of style" to elegant programs. He cites Hoare - who describes that code should be self documenting. Dijkstra (1972) indicates that beautiful programs optimize efficiency but are not opaque. This sort of conversation is qulaitatively different than a random sharing of opinions. Therefore, the question - Which reference provides your definition of "elegant" or "beautiful" code? "Which *reference*" is not subjective - anything else will most likely shut the thread down, so please supply *references* not opinions.

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  • N-Tier Architecture - Structure with multiple projects in VB.NET

    - by focus.nz
    I would like some advice on the best approach to use in the following situation... I will have a Windows Application and a Web Application (presentation layers), these will both access a common business layer. The business layer will look at a configuration file to find the name of the dll (data layer) which it will create a reference to at runtime (is this the best approach?). The reason for creating the reference at runtime to the data access layer is because the application will interface with a different 3rd party accounting system depending on what the client is using. So I would have a separate data access layer to support each accounting system. These could be separate setup projects, each client would use one or the other, they wouldn't need to switch between the two. Projects: MyCompany.Common.dll - Contains interfaces, all other projects have a reference to this one. MyCompany.Windows.dll - Windows Forms Project, references MyCompany.Business.dll MyCompany.Web.dll - Website project, references MyCompany.Business.dll MyCompany.Busniess.dll - Business Layer, references MyCompany.Data.* (at runtime) MyCompany.Data.AccountingSys1.dll - Data layer for accounting system 1 MyCompany.Data.AccountingSys2.dll - Data layer for accounting system 2 The project MyCompany.Common.dll would contain all the interfaces, each other project would have a reference to this one. Public Interface ICompany ReadOnly Property Id() as Integer Property Name() as String Sub Save() End Interface Public Interface ICompanyFactory Function CreateCompany() as ICompany End Interface The project MyCompany.Data.AccountingSys1.dll and MyCompany.Data.AccountingSys2.dll would contain the classes like the following: Public Class Company Implements ICompany Protected _id As Integer Protected _name As String Public ReadOnly Property Id As Integer Implements MyCompany.Common.ICompany.Id Get Return _id End Get End Property Public Property Name As String Implements MyCompany.Common.ICompany.Name Get Return _name End Get Set(ByVal value as String) _name = value End Set End Property Public Sub Save() Implements MyCompany.Common.ICompany.Save Throw New NotImplementedException() End Sub End Class Public Class CompanyFactory Implements ICompanyFactory Public Function CreateCompany() As ICompany Implements MyCompany.Common.ICompanyFactory.CreateCompany Return New Company() End Function End Class The project MyCompany.Business.dll would provide the business rules and retrieve data form the data layer: Public Class Companies Public Shared Function CreateCompany() As ICompany Dim factory as New MyCompany.Data.CompanyFactory Return factory.CreateCompany() End Function End Class Any opinions/suggestions would be greatly appreciated.

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