Search Results

Search found 7650 results on 306 pages for 'soa record'.

Page 27/306 | < Previous Page | 23 24 25 26 27 28 29 30 31 32 33 34  | Next Page >

• Welcome

  - by Jiandong Guo

  In this blog, I plan to provide you with information about OWSM, Oracle Web services Manager.  I joined Platform Security and OWSM team in Oracle's identity management organization in February, 2010. Before that I had been working on Metro, an open source Web services project,  in Sun's Glassfish organization for 5 years, as one of the architects for security. I am continuing that work here at Oracle OWSM, focusing on developing and evangelizing our enterprise Web services security,  identity and policy management offerings.To start with, I plan to write a series of posts on some of the new features for OWSM in Oracle Fusion Middleware 11g R1 PS3.Thank you all for your interests.

  Read the article

• Versioning Strategy for Service Interfaces JAR

  - by Colin Morelli

  I'm building a service oriented architecture composed (mostly) of Java-based services, each of which is a Maven project (in an individual repository) with two submodules: common, and server. The common module contains the service's interfaces that clients can include in their project to make service calls. The server submodule contains the code that actually powers the service. I'm now trying to figure out an appropriate versioning strategy for the interfaces, such that each interface change results in a new common jar, but changes to the server (so long as they don't impact the contract of the interfaces) receive the same common jar. I know this is pretty simple to do manually (simply increment the server version and don't touch the common one), but this project will be built and deployed by a CI server, and I'd like to come up with a strategy for automatically versioning these. The only thing I have been able to come up with so far is to have the CI server md5 the service interfaces.

  Read the article

• Oracle ADF Framework for 4GL Developers Workshop (15-17/Jun/10)

  - by Claudia Costa

  This 3 day workshop is targeted at Oracle Forms professionals interested in developing JEE applications based on Oracle ADF (Application Development Framework). The workshop highlights the similarities between the 2 development paradigms, while also discussing the crucial differences and components such as the ADF BC and ADF Faces. The goal is to lower the learning curve and enable the attendees to leverage ADF technology immediately, either in developing new applications or re-writing existing Forms applications.   During the event the attendees will rewrite a sample Oracle Forms application using the above technology.   Prerequisites ·         Basic knowledge Oracle database ·         Basic knowledge of the Java Programming Language ·         Basic knowledge of Oracle Jdeveloper or another Java IDE   Hardware/Software Requirements This workshop requires attendees to provide their own laptops for this class. Attendee laptops must meet the following minimum hardware/software requirements: ·         Laptop/PC (3 GB RAM recommended) ·         Oracle Database 10g ·         Internet Explorer 7 ·         The version of Oracle JDeveloper 11g will be provided   To view the full agenda and register please click here   ------------------------------------------------------------------------ Clique aqui e registe-se.   Horário e Local: 9h30 - 18h00 Oracle Lagoas Park - Edf. 8, Porto Salvo   Para mais informações, por favor contacte: [email protected] ------------------------------------------------------------------------

  Read the article

• How to use the unit of work and repository patterns in a service oriented enviroment

  - by A. Karimi

  I've created an application framework using the unit of work and repository patterns for it's data layer. Data consumer layers such as presentation depend on the data layer design. For example a CRUD abstract form has a dependency to a repository (IRepository). This architecture works like a charm in client/server environments (Ex. a WPF application and a SQL Server). But I'm looking for a good pattern to change or reuse this architecture for a service oriented environment. Of course I have some ideas: Idea 1: The "Adapter" design pattern Keep the current architecture and create a new unit of work and repository implementation which can work with a service instead of the ORM. Data layer consumers are loosely coupled to the data layer so it's possible but the problem is about the unit of work; I have to create a context which tracks the objects state at the client side and sends the changes to the server side on calling the "Commit" (Something that I think the RIA has done for Silverlight). Here the diagram: ----------- CLIENT----------- | ------------------ SERVER ---------------------- [ UI ] -> [ UoW/Repository ] ---> [ Web Services ] -> [ UoW/Repository ] -> [DB] Idea 2: Add another layer Add another layer (let say "local services" or "data provider"), then put it between the data layer (unit of work and repository) and the data consumer layers (like UI). Then I have to rewrite the consumer classes (CRUD and other classes which are dependent to IRepository) to depend on another interface. And the diagram: ----------------- CLIENT ------------------ | ------------------- SERVER --------------------- [ UI ] -> [ Local Services/Data Provider ] ---> [ Web Services ] -> [ UoW/Repository ] -> [DB] Please note that I have the local services layer on the current architecture but it doesn't expose the data layer functionality. In another word the UI layer can communicate with both of the data and local services layers whereas the local services layer also uses the data layer. | | | | | | | | ---> | Local Services | ---> | | | UI | | | | Data | | | | | | | ----------------------------> | |

  Read the article

• Is there a clean separation of my layers with this attempt at Domain Driven Design in XAML and C#

  - by Buddy James

  I'm working on an application. I'm using a mixture of TDD and DDD. I'm working hard to separate the layers of my application and that is where my question comes in. My solution is laid out as follows Solution MyApp.Domain (WinRT class library) Entity (Folder) Interfaces(Folder) IPost.cs (Interface) BlogPosts.cs(Implementation of IPost) Service (Folder) Interfaces(Folder) IDataService.cs (Interface) BlogDataService.cs (Implementation of IDataService) MyApp.Presentation(Windows 8 XAML + C# application) ViewModels(Folder) BlogViewModel.cs App.xaml MainPage.xaml (Contains a property of BlogViewModel MyApp.Tests (WinRT Unit testing project used for my TDD) So I'm planning to use my ViewModel with the XAML UI I'm writing a test and define my interfaces in my system and I have the following code thus far. [TestMethod] public void Get_Zero_Blog_Posts_From_Presentation_Layer_Returns_Empty_Collection() { IBlogViewModel viewModel = _container.Resolve<IBlogViewModel>(); viewModel.LoadBlogPosts(0); Assert.AreEqual(0, viewModel.BlogPosts.Count, "There should be 0 blog posts."); } viewModel.BlogPosts is an ObservableCollection<IPost> Now.. my first thought is that I'd like the LoadBlogPosts method on the ViewModel to call a static method on the BlogPost entity. My problem is I feel like I need to inject the IDataService into the Entity object so that it promotes loose coupling. Here are the two options that I'm struggling with: Not use a static method and use a member method on the BlogPost entity. Have the BlogPost take an IDataService in the constructor and use dependency injection to resolve the BlogPost instance and the IDataService implementation. Don't use the entity to call the IDataService. Put the IDataService in the constructor of the ViewModel and use my container to resolve the IDataService when the viewmodel is instantiated. So with option one the layers will look like this ViewModel(Presentation layer) - Entity (Domain layer) - IDataService (Service Layer) or ViewModel(Presentation layer) - IDataService (Service Layer)

  Read the article

• IT Optimization Plan Pays Off For UK Retailer

  - by [email protected]

  I caught this article in ComputerworldUK yesterday. The headline talks about UK-based supermarket chain Morrisons is increasing their IT spend...OK, sounds good. Even nicer that Oracle is a big part of that. But what caught my eye were three things: 1) Morrison's truly has a long term strategy for IT. In this case, modernizing and optimizing how they use IT for business advantage. 2) Even in a tough economic climate, Morrison's views IT investments as contributing to and improving the bottom line. Specifically, "The investment in IT contributed to a 21 percent increase in Morrison's underlying profit.." 3) The phased, 3-year "Optimization Plan" took a holistic approach to their business--from CRM and Supply Chain systems to the underlying application infrastructure. On the infrastructure front, adopting a more flexible Service-Oriented Architecture enabled them to be more agile and adapt their business and Identity Management helped with sometimes mundane (but costly) issues like lost passwords and being able to document who has access to what. Things don't always turn out so rosy. And I know it was a long and difficult process...but it's nice to see a happy ending every once in a while.

  Read the article

• Reuse Business Logic between Web and API

  - by fesja

  We have a website and two mobile apps that connect through an API. All the platforms do the exactly same things. Right now the structure is the following: Website. It manages models, controllers, views for the website. It also executes all background tasks. So if a user create a place, everything is executed in this code. API. It manages models, controllers and return a JSON. If a user creates a place on the mobile app, the place is created here. After, we add a background task to update other fields. This background task is executed by the Website. We are redoing everything, so it's time to improve the approach. Which is the best way to reuse the business logic so I only need to code the insert/edit/delete of the place & other actions related in just one place? Is a service oriented approach a good idea? For example: Service. It has the models and gets, adds, updates and deletes info from the DB. Website. It send the info to the service, and it renders HTML. API. It sends info to the service, and it returns JSON. Some problems I have found: More initial work? Not sure.. It can work slower. Any experience? The benefits: We only have the business logic in one place, both for web and api. It's easier to scale. We can put each piece on different servers. Other solutions Duplicate the code and be careful not to forget anything (do tests!) DUplicate some code but execute background tasks that updates the related fields and executes other things (emails, indexing...) A "small" detail is we are 1.3 person in backend, for now ;)

  Read the article

• Random thoughts on Monday

  - by user10760339

  I know that it has been a long time since my last post, just though that I would update you my latest thoughts of Governance. I just recently completed an executive round table series on EA and Cloud in Singapore, Indonesia and Malaysia. The response was phenomenal. The key point of the session was that Enterprise is the key enabler of innovation - All companies want to drive to be market leaders, EA can lay the foundation for the path to deliver that at innovation. When it comes to innovation, I see two distinct types: (a) Passive innovation is where a company creates innovation thought increments improvement over time. A great example is when airlines went from paper tickets to electronic ticket. Next logical progression is to do the same with boarding passes. There are a lot of examples to choose from, thought the thing to keep in mind, is that passive innovation will only keep you in the lead, it won’t allow you to create new markets or jump from #3 to #1 in one go. For that we need another type of innovation. (b) Disruptive innovation is where you create market where none existed before. Thought very difficult to do and requires significant investment in research, product and software development and not least of all, visionary thinking and timing, if done correctly, can turn the world on it’s ear. A great example is Apple iTunes. Some might say that this is incremental innovation, but only in one aspect, the downloading of music. Other then that, it’s all disruptive innovation. Being able to buy a single song rather then the album fundamentally changed the way we get out music. Behind all of these types of innovation is Enterprise Architecture. EA creates the infrastructure foundation, then delivery systems and the end-user experience to deliver this innovation. At Oracle, we are driving that EA innovation with our private cloud offerings from “bolt-to-glass” as I like to say. For more on what Oracle has to offer in EA and cloud, have a look at Cloud Computing | Oracle and Enterprise Architecture - OracleI am working on new material that I will be posting in a couple of weeks, so check back regularly for new updates or feel free to subscript for updates.

  Read the article

• Why do people think SOAP is deprecated?

  - by user98q37479

  While browsing SO today I found this question here and it starts with this: Sure, you're gonna tell me that SOAP is depracated and all, well i'm forced to use it Found lots of statement like this one on SO up till now, this one just triggered me to ask this question. REST has its uses, SOAP has its uses, in some places they intersect as functionality but they are not replaceable to one another. So I wonder, why do people think SOAP is "deprecated"? Is it ignorance? Complexity of SOAP and WS-* specs? REST hype? What? If you think SOAP is deprecated please tell me why. I'm curious!

  Read the article

• Transform Your Application Integration with Best Practices from Oracle Customers

  - by Lionel Dubreuil

  You want to transform your application integration into an environment based on a service-oriented architecture (SOA). You also want to utilize business process management (BPM) to improve efficiency, deliver business agility, lower total cost of ownership, and increase business visibility. And you want to hear directly from like-minded professionals who have made those types of transformations. Easy enough. Attend this Webcast series to learn from customers who have successfully integrated with Oracle SOA and BPM solutions.Join us for this series and discover how to: Use a single unified platform for all types of processes Increase real-time process visibility Improve efficiency of existing IT investments Lower up-front costs and achieve faster time to market Gain greater benefit from SOA with the addition of BPM Here's the list of upcoming webcasts: “Migrating to SOA at Choice Hotels” on Thurs., June 21, 2012 — 10 a.m. PT / 1 p.m. ET Hear how Choice Hotels successfully made the transition from a complex legacy environment into a SOA-based shared services infrastructure that accelerated time to market as the company implemented its event-driven Google API project. “San Joaquin County—Optimizing Justice and Public Safety with Oracle BPM and Oracle SOA” on Thurs., July 26, 2012 — 10 a.m. PT / 1 p.m. ET Learn how San Joaquin County moved to a service-oriented architecture foundation and business process management platform to gain efficiency and greater visibility into mission-critical information for public safety. “Streamlining Order to Cash with SOA at Eaton” on Thurs., August 23, 2012 — 10 a.m. PT / 1 p.m. ET Discover how Eaton transitioned from a legacy TIBCO infrastructure. Learn about the company’s reference architecture for a SOA-based Oracle Fusion Distributed Order Orchestration (DOO). “Fast BPM Implementation with Fusion: Production in Five Months” on Thurs., September 13, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Nets Denmark A/S implemented Oracle Unified Business Process Management Suite in just five months. The Webcast will cover the implementation from start to production, including integration with legacy systems. “SOA Implementation at Farmers Insurance” on Thurs., October 18, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Farmers Insurance Group lowered application infrastructure costs, reduced time to market, and introduced flexibility by transforming to a SOA-based infrastructure with SOA governance. Register today!

  Read the article

• Transform Your Application Integration with Best Practices from Oracle Customers

  - by Lionel Dubreuil

  You want to transform your application integration into an environment based on a service-oriented architecture (SOA). You also want to utilize business process management (BPM) to improve efficiency, deliver business agility, lower total cost of ownership, and increase business visibility. And you want to hear directly from like-minded professionals who have made those types of transformations. Easy enough. Attend this Webcast series to learn from customers who have successfully integrated with Oracle SOA and BPM solutions.Join us for this series and discover how to: Use a single unified platform for all types of processes Increase real-time process visibility Improve efficiency of existing IT investments Lower up-front costs and achieve faster time to market Gain greater benefit from SOA with the addition of BPM Here's the list of upcoming webcasts: “Migrating to SOA at Choice Hotels” on Thurs., June 21, 2012 — 10 a.m. PT / 1 p.m. ET Hear how Choice Hotels successfully made the transition from a complex legacy environment into a SOA-based shared services infrastructure that accelerated time to market as the company implemented its event-driven Google API project. “San Joaquin County—Optimizing Justice and Public Safety with Oracle BPM and Oracle SOA” on Thurs., July 26, 2012 — 10 a.m. PT / 1 p.m. ET Learn how San Joaquin County moved to a service-oriented architecture foundation and business process management platform to gain efficiency and greater visibility into mission-critical information for public safety. “Streamlining Order to Cash with SOA at Eaton” on Thurs., August 23, 2012 — 10 a.m. PT / 1 p.m. ET Discover how Eaton transitioned from a legacy TIBCO infrastructure. Learn about the company’s reference architecture for a SOA-based Oracle Fusion Distributed Order Orchestration (DOO). “Fast BPM Implementation with Fusion: Production in Five Months” on Thurs., September 13, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Nets Denmark A/S implemented Oracle Unified Business Process Management Suite in just five months. The Webcast will cover the implementation from start to production, including integration with legacy systems. “SOA Implementation at Farmers Insurance” on Thurs., October 18, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Farmers Insurance Group lowered application infrastructure costs, reduced time to market, and introduced flexibility by transforming to a SOA-based infrastructure with SOA governance. Register today!

  Read the article

• Transform Your Application Integration with Best Practices from Oracle Customers

  - by Lionel Dubreuil

  You want to transform your application integration into an environment based on a service-oriented architecture (SOA). You also want to utilize business process management (BPM) to improve efficiency, deliver business agility, lower total cost of ownership, and increase business visibility. And you want to hear directly from like-minded professionals who have made those types of transformations. Easy enough. Attend this Webcast series to learn from customers who have successfully integrated with Oracle SOA and BPM solutions.Join us for this series and discover how to: Use a single unified platform for all types of processes Increase real-time process visibility Improve efficiency of existing IT investments Lower up-front costs and achieve faster time to market Gain greater benefit from SOA with the addition of BPM Here's the list of upcoming webcasts: “Migrating to SOA at Choice Hotels” on Thurs., June 21, 2012 — 10 a.m. PT / 1 p.m. ET Hear how Choice Hotels successfully made the transition from a complex legacy environment into a SOA-based shared services infrastructure that accelerated time to market as the company implemented its event-driven Google API project. “San Joaquin County—Optimizing Justice and Public Safety with Oracle BPM and Oracle SOA” on Thurs., July 26, 2012 — 10 a.m. PT / 1 p.m. ET Learn how San Joaquin County moved to a service-oriented architecture foundation and business process management platform to gain efficiency and greater visibility into mission-critical information for public safety. “Streamlining Order to Cash with SOA at Eaton” on Thurs., August 23, 2012 — 10 a.m. PT / 1 p.m. ET Discover how Eaton transitioned from a legacy TIBCO infrastructure. Learn about the company’s reference architecture for a SOA-based Oracle Fusion Distributed Order Orchestration (DOO). “Fast BPM Implementation with Fusion: Production in Five Months” on Thurs., September 13, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Nets Denmark A/S implemented Oracle Unified Business Process Management Suite in just five months. The Webcast will cover the implementation from start to production, including integration with legacy systems. “SOA Implementation at Farmers Insurance” on Thurs., October 18, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Farmers Insurance Group lowered application infrastructure costs, reduced time to market, and introduced flexibility by transforming to a SOA-based infrastructure with SOA governance. Register today!

  Read the article

• Transform Your Application Integration with Best Practices from Oracle Customers

  - by Lionel Dubreuil

  You want to transform your application integration into an environment based on a service-oriented architecture (SOA). You also want to utilize business process management (BPM) to improve efficiency, deliver business agility, lower total cost of ownership, and increase business visibility. And you want to hear directly from like-minded professionals who have made those types of transformations. Easy enough. Attend this Webcast series to learn from customers who have successfully integrated with Oracle SOA and BPM solutions.Join us for this series and discover how to: Use a single unified platform for all types of processes Increase real-time process visibility Improve efficiency of existing IT investments Lower up-front costs and achieve faster time to market Gain greater benefit from SOA with the addition of BPM Here's the list of upcoming webcasts: “Migrating to SOA at Choice Hotels” on Thurs., June 21, 2012 — 10 a.m. PT / 1 p.m. ET Hear how Choice Hotels successfully made the transition from a complex legacy environment into a SOA-based shared services infrastructure that accelerated time to market as the company implemented its event-driven Google API project. “San Joaquin County—Optimizing Justice and Public Safety with Oracle BPM and Oracle SOA” on Thurs., July 26, 2012 — 10 a.m. PT / 1 p.m. ET Learn how San Joaquin County moved to a service-oriented architecture foundation and business process management platform to gain efficiency and greater visibility into mission-critical information for public safety. “Streamlining Order to Cash with SOA at Eaton” on Thurs., August 23, 2012 — 10 a.m. PT / 1 p.m. ET Discover how Eaton transitioned from a legacy TIBCO infrastructure. Learn about the company’s reference architecture for a SOA-based Oracle Fusion Distributed Order Orchestration (DOO). “Fast BPM Implementation with Fusion: Production in Five Months” on Thurs., September 13, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Nets Denmark A/S implemented Oracle Unified Business Process Management Suite in just five months. The Webcast will cover the implementation from start to production, including integration with legacy systems. “SOA Implementation at Farmers Insurance” on Thurs., October 18, 2012 — 10 a.m. PT / 1 p.m. ET Learn how Farmers Insurance Group lowered application infrastructure costs, reduced time to market, and introduced flexibility by transforming to a SOA-based infrastructure with SOA governance. Register today!

  Read the article

• Issues with the intended behavior of a Service layer?

  - by Rafael Cichocki

  This analysis makes sense, and states anything that avoids code duplication and simplifies maintenance speaks for a service layer. What is the technical behavior? When a service client references a service, does it do so at runtime, or does it happen at compile time? When I change something in the service layer code, will this change be automatically taken into account in all it's clients, or do they need to be individually recompiled? How does this make sense from a testing point of view - I have working code, based on some code from a service, but if that service changes, my code might break?!

  Read the article

• Article: Panning for Gold - Finding real value in conversations about enterprise architecture

  - by OracleTechnologyNetwork

  Everybody's talking enterprise architecture. But how much of the conversation has any real value?

  Read the article

• Push-Based Events in a Services Oriented Architecture

  - by Colin Morelli

  I have come to a point, in building a services oriented architecture (on top of Thrift), that I need to expose events and allow listeners. My initial thought was, "create an EventService" to handle publishing and subscribing to events. That EventService can use whatever implementation it desires to actually distribute the events. My client automatically round-robins service requests to available service hosts which are determined using Zookeeper-based service discovery. So, I'd probably use JMS inside of EventService mainly for the purpose of persisting messages (in the event that a service host for EventService goes down before it can distribute the message to all of the available listeners). When I started considering this, I began looking into the differences between Queues and Topics. Topics unfortunately won't work for me, because (at least for now), all listeners must receive the message (even if they were down at the time the event was pushed, or hadn't made a subscription yet because they haven't completed startup (during deployment, for example) - messages should be queued until the service is available). However, I don't want EventService to be responsible for handling all of the events. I don't think it should have the code to react to events inside of it. Each of the services should do what it needs with a given event. This would indicate that each service would need a JMS connection, which questions the value of having EventService at all (as the services could individually publish and subscribe to JMS directly). However, it also couples all of the services to JMS (when I'd rather that there be a single service that's responsible for determining how to distribute events). What I had thought was to publish an event to EventService, which pulls a configuration of listeners from some configuration source (database, flat file, irrelevant for now). It replicates the message and pushes each one back into a queue with information specific to that listener (so, if there are 3 listeners, 1 event would become 3 events in JMS). Then, another thread in EventService (which is replicated, running on multiple hots) would be pulling from the queue, attempting to make the service call to the "listener", and returning the message to the queue (if the service is down), or discarding the message (if the listener completed successfully). tl;dr If I have an EventService that is responsible for receiving events and delegating service calls to "event listeners," (which are really just endpoints on other services), how should it know how to craft the service call? Should I create a generic "Event" object that is shared among all services? Then, the EventService can just construct this object and pass it to the service call. Or is there a better answer to this problem entirely?

  Read the article

• Services or Shared Libraries?

  - by Royal

  I work in an environment where we have several different web applications, where each of them have different features but still need to do similar things: authentication, read from common data sources, store common data, etc. Is it better to build the shared functionality into a set of services, to be called by the web apps, or is it better to make a shared library, which the webapps include? The services or libraries would need to access various databases, and it seems like keeping that access in a single place (service) is a good idea. It would also reduce the number of database connections needed. A service would also keep the logic in a single place, but then it could be argued that a shared library can do the same thing. Are there other benefits to be gained from using services over shared libraries?

  Read the article

• Queuing rpc calls

  - by alfa64

  i'm designing a system wich listen to json rpc calls from clients, piles it up inside a list, and if it gets full it should store them in a DB and keep recieving calls. My original plan is to listen to the rpc calls from Perl with the json-rpc and put them in the array. The clients do some long polling in another server to get responses as they appear. What is this blocking/noblocking thing? Should i do a script for node.js to listen to the calls? What do you think is a good practice in this case? The objective is to listen as much calls as possible.

  Read the article

• What is the value of workflow tools?

  - by user16549

  I'm new to Workflow developement, and I don't think I'm really getting the "big picture". Or perhaps to put it differently, these tools don't currently "click" in my head. So it seems that companies like to create business drawings to describe processes, and at some point someone decided that they could use a state machine like program to actually control processes from a line and boxes like diagram. Ten years later, these tools are huge, extremely complicated (my company is currently playing around with WebSphere, and I've attended some of the training, its a monster, even the so called "minimalist" versions of these workflow tools like Activiti are huge and complicated although not nearly as complicated as the beast that is WebSphere afaict). What is the great benefit in doing it this way? I can kind of understand the simple lines and boxes diagrams being useful, but these things, as far as I can tell, are visual programming languages at this point, complete with conditionals and loops. Programmers here appear to be doing a significant amount of work in the lines and boxes layer, which to me just looks like a really crappy, really basic visual programming language. If you're going to go that far, why not just use some sort of scripting language? Have people thrown the baby out with the bathwater on this? Has the lines and boxes thing been taken to an absurd level, or am I just not understanding the value in all this? I'd really like to see arguments in defense of this by people that have worked with this technology and understand why its useful. I don't see the value in it, but I recognize that I'm new to this as well and may not quite get it yet.

  Read the article

• Communication Between Different Technologies in a Distributed Application

  - by sjtaheri

  I had to a incorporate several legacy applications and services in a network-distributed application. The existing services and applications are written using different languages and technologies, including: java, C#.Net and C++; all running on MS Windows machines. Now I'm wondering about the communication mechanism between them. What is the simple and standard way? Thanks! PS. communications include simple message sending and remote method invocations.

  Read the article

• Learning Issued Token in Federated Service

  - by Lijo

  I would like to learn federated WCF service. I have the following in my system. • Windows XP • Visual Studio 2010 Express • SQL Server 2008 Express Is it possible to create a federated service sample with this infrastructure? Is there any article for that? UPDATE Federation: http://msdn.microsoft.com/en-us/library/ms730908.aspx Federation Sample: http://msdn.microsoft.com/en-us/library/aa355045.aspx

  Read the article

• Use a custom value object or a Guid as an entity identifier in a distributed system?

  - by Kazark

  tl;dr I've been told that in domain-driven design, an identifier for an entity could be a custom value object, i.e. something other than Guid, string, int, etc. Can this really be advisable in a distributed system? Long version I will invent an situation analogous to the one I am currently facing. Say I have a distributed system in which a central concept is an egg. The system allows you to order eggs and see spending reports and inventory-centric data such as quantity on hand, usage, valuation and what have you. There area variety of services backing these behaviors. And say there is also another app which allows you to compose recipes that link to a particular egg type. Now egg type is broken down by the species—ostrich, goose, duck, chicken, quail. This is fine and dandy because it means that users don't end up with ostrich eggs when they wanted quail eggs and whatnot. However, we've been getting complaints because jumbo chicken eggs are not even close to equivalent to small ones. The price is different, and they really aren't substitutable in recipes. And here we thought we were doing users a favor by not overwhelming them with too many options. Currently each of the services (say, OrderSubmitter, EggTypeDefiner, SpendingReportsGenerator, InventoryTracker, RecipeCreator, RecipeTracker, or whatever) are identifying egg types with an industry-standard integer representation the species (let's call it speciesCode). We realize we've goofed up because this change could effect every service. There are two basic proposed solutions: Use a predefined identifier type like Guid as the eggTypeID throughout all the services, but make EggTypeDefiner the only service that knows that this maps to a speciesCode and eggSizeCode (and potentially to an isOrganic flag in the future, or whatever). Use an EggTypeID value object which is a combination of speciesCode and eggSizeCode in every service. I've proposed the first solution because I'm hoping it better encapsulates the definition of what an egg type is in the EggTypeDefiner and will be more resilient to changes, say if some people now want to differentiate eggs by whether or not they are "organic". The second solution is being suggested by some people who understand DDD better than I do in the hopes that less enrichment and lookup will be necessary that way, with the justification that in DDD using a value object as an ID is fine. Also, they are saying that EggTypeDefiner is not a domain and EggType is not an entity and as such should not have a Guid for an ID. However, I'm not sure the second solution is viable. This "value object" is going to have to be serialized into JSON and URLs for GET requests and used with a variety of technologies (C#, JavaScript...) which breaks encapsulation and thus removes any behavior of the identifier value object (is either of the fields optional? etc.) Is this a case where we want to avoid something that would normally be fine in DDD because we are trying to do DDD in a distributed fashion? Summary Can it be a good idea to use a custom value object as an identifier in a distributed system (solution #2)?

  Read the article

• Allowing client to select data to return via REST interface

  - by CMP

  I have a rest service that is essentially a proxy to a variety of other services. So if I call GET /users/{id} It will get their user profile, as well as order history, and contact info, etc... all from various services, and aggregates them into one nice object. My problem is that each call to a different service has the potential to add time to the original request, so we would rather not get ALL the data ALL of the time if a particular client does not care about all of the pieces. A solution I have arrived at is to do something like this: GET /users/{id}?includeOrders=true&includeX=true&includeY=true... That works, and it allow me to do only what I need to, but it is cumbersome. We have added enough different data sources that there are too many parameters for that style to be useful. I could do something similar with a single integer and a bitmask or something, but that only makes it harder to read, and it does not feel very Restful. I could break it down into multiple calls so they would need to call /users/{id}/orders and /users/{id}/profile separately, but that sort of defeats the purpose of an aggregating proxy, who's purpose is to make clients jobs easier. Are there any good patterns that can help me return just enough data for each client, without making it too difficult for them to filter and select what they want?

  Read the article

• In choosing a service-oriented architecture framework that needs to work with .NET and with Java, what to look for?

  - by cm007

  I planning to write an application in which there will be a service (call it A) listening for particular commands. This service will then relay those commands to other services (call them B and C) which are written, respectively, in .NET and Java (service A chooses which of service B or C to which to relay depending on the contents of the request to service A). I am looking for a framework that will allow for interoperability with both .NET and with Java, for example WCF or JAX-WS, or writing a custom framework (e.g., JSON REST commands over HTTP, similar to http://code.google.com/p/selenium/wiki/JsonWireProtocol). What questions/aspects should I consider in deciding?

  Read the article

• Rails test db doesn't persist record changes

  - by nathan.f77

  I've been trying to solve a problem for a few weeks now. I am running rspec tests for my Rails app, and they are working fine except for one error that I can't seem get my head around. I am using MySQL with the InnoDB engine. I have set config.use_transactional_fixtures = true in spec_helper.rb I load my test fixtures manually with the command rake spec:db:fixtures:load. The rspec test is being written for a BackgrounDRb worker, and it is testing that a record can have its state updated (through the state_machine gem). Here is my problem: I have a model called Listings. The rspec test calls the update_sold_items method within a file called listing_worker.rb. This method calls listing.sell for a particular record, which sets the listing record's 'state' column to 'sold'. So far, this is all working fine, but when the update_sold_items method finishes, my rspec test fails here: listing = Listing.find_by_listing_id(listing_id) listing.state.should == "sold" expected: "sold", got: "current" (using ==) I've been trying to track down why the state change is not persisting, but am pretty much lost. Here is the result of some debugging code that I placed in the update_sold_items method during the test: pp listing.state # => "current" listing.sell! listing.save! pp listing.state # => "sold" listing.reload pp listing.state # => "current" I cannot understand why it saves perfectly fine, but then reverts back to the original record whenever I call reload, or Listing.find etc. Thanks for reading this, and please ask any questions if I haven't given enough information. Thanks for your help, Nathan B P.S. I don't have a problem creating new records for other classes, and testing those records. It only seems to be a problem when I am updating records that already exist in the database.

  Read the article

< Previous Page | 23 24 25 26 27 28 29 30 31 32 33 34  | Next Page >