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  • Javascript MVC in principle

    - by Michael
    Suppose I want to implement MVC in JavaScript. I am not asking about MVC frameworks. I am asking how to build it in principle. Let's consider a search page of an e-commerce site, which works s follows: User chooses a product and its attributes and press a "search" button. Application sends the search request to the server, receives a list of products. Application displays the list in the web page. I think the Model holds a Query and list of Product objects and "publishes" such events as "query updated", "list of products updated", etc. The Model is not aware of DOM and server, or course. View holds the entire DOM tree and "subscribes" to the Model events to update the DOM. Besides, it "publishes" such events as "user chose a product", "user pressed the search button" etc. Controller does not hold any data. It "subscribes" to the View events, calls the server and updates the Model. Does it make sense?

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  • BI&EPM Partner Training and Specialisation Update

    - by Mike.Hallett(at)Oracle-BI&EPM
    1.     Just a reminder for you to take the New Version OBI11g Exams to update your OPN Specialisation @ OPN Exam for OBI Suite 11g is Now LIVE 2.     Check for places on free / subsidised Partner specific Bootcamps which are being run in several countries (and you can always fly there... it is still lower cost than alternatives !) : a.     Exalytics OBI11g Partner Training 3-day hands-on Workshops b.     EPM Planning (Hyperion) V11.1.2 Implementation Hands-On Boot-camp c.     Endeca Information Discovery 3-Day Hands-on Training Boot-Camp 3.     Other Partner Events a.     Frankfurt, Dreieich, November 15: Oracle Endeca Information Discovery b.     Utrecht, November 14: Oracle Bi Test Drives c.     Vilvoorde, November 16: Oracle Bi Test Drives d.     London, November 20: Delivering Insight Across Your Business - Oracle Business Intelligence Workshop e.     Milano, November 13: Oracle Drive Better Business Outcomes with Big Data and Analytics You can also selectively filter search for courses via the Partner Events Calendar @ http://events.oracle.com/search/search?group=Events&keyword=OPN+Only Otherwise, it is worth checking the Oracle Partner Enablement BLOG for any BI / EPM news, especially the sub-Blogs on the right for each country.  And there are many Self-Paced Tutorials for BI&EPM Partners available on demand at any time There is also a monthly Partner Enablement Update (PDF) to find out the latest partner training on Oracle's new products and new releases.

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  • Best Party of 2011: Introducing Java 7

    - by Tori Wieldt
    As a member of the Java community, you played a critical role in building Java 7. You contributed great ideas for new features and new ways of working and collaborating to take the next step in development. And now, it’s time to celebrate with a global gathering of the Java community—online and live. See your ideas at work. Hear about everything Java 7 can do for you and how we’re moving Java forward together. Join us for celebrations in Redwood Shores, São Paulo, or London—as we unveil the latest innovations in Java 7. The three events will be joined with each other by satellite, and will be available as a webcast if you can't attend the live events. Learn from fellow developers around the globe who are getting the most out of the new features. Get overviews from the Java experts on Project Coin, the Fork/Join framework, the new file system API, improvements to the VM, and a panel discussion with Q & A. Thursday, July 07, 2011 Redwood Shores, United States: 9:00 a.m. PT - 1:30pm PT São Paulo, Brazil: 1:00 p.m BRT London, England: 5:00 p.m. BST Live Webcast: 9:00 a.m. PT - 1:30pm PT  Get more information about the July 7 events. You need to register for the live events or webcast. There will also be other celebrations at Java User Group (JUG) meetings for the next few months.Find your local JUG. Follow the conversation on Twitter: follow @Java and use #java7 Java is moving forward, let's party!

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  • Recommend a CMS and extension to build an Event Manager [closed]

    - by Haris
    I posted this question on SO but good friends there told me that SE is the better place for these kind of questions and the post was locked there by community. Hence, posting the question here as well: I have a lead to build an event manager solution in LAMP with following functionality: It should handle events by country, city, locality in city, type of event, venue type etc. following are a few user features: to see details of city, venue, event, performer etc. to purchase tickets and reserve tables. to search for events by city, venue, type, performer etc. to manage favorite venues and performers, save events etc. the venues should be able to add their events I plan to use a CMS (Joomla, Drupal etc.) with some ready made extension that provides most of the functionality or provide framework to build upon. Could you guys suggest me a CMS and an extension to build this. I know it is possible to do this in both Joomla or Drupal. What I am looking is the extension that is closest to my requirements whether it is done in Joomla or Drupal, or as a matter of fact any other CMS. Thanks in anticipation!

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  • SEO: Getting site to show in location-specific searches

    - by willvv
    I'm really new to this SEO world and I've been reading a lot to try and figure it out. We have a site moodbond.com that allows users to browse/create events anywhere. And we fill it with content from the main cities in the US. We would like it to show for searches for things like "events in san francisco" or "what to do in new york", however, since the site is not really location-specific, I'm not really sure where to begin. I've been thinking a couple of things, maybe you can help me decide if these would be a good way to start or if I should try something different. 1- Allow something like location-specific urls (e.g. moodbond.com/browse/san-francisco) could just show the main page centered in San Francisco. 2- Change the headers/title of the page so it adapts automatically to the city being browsed (and change this dynamically as the user changes the location of the map). 3- Add internal links to different locations (e.g. add a link at the footer of the page that says "Events in Seattle" that makes the site load events in that city. (this would probably depend on implementing #1). What do you guys think? will any of these really help or should I look for a different approach? any advice is welcome. Thanks

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  • Probation is Over: PASS Board Year 1, Q2

    - by Denise McInerney
    Though it's not always official every job begins with a probation period. You start out with lots of questions and every day you find out how much more you have to learn. Usually after a few months you discover that you can actually answer some questions and have at least an idea of what you are supposed to be doing. Now at the end of my second quarter on the "job" of serving on the PASS Board I have reached that point. My probation period is over. The last three months were busy for the entire Board with the budget process, an in-person meeting and moving forward with PASS Global Growth plans. I had also set a specific goal for myself for my 2nd quarter: to see the Board to adopt a Code of Conduct for the PASS Summit. Code of Conduct When I ran for the Board I included my desire to see PASS establish a code of conduct in my campaign platform.  I was motivated to do this for a few reasons. Other technical conferences have had incidents of harassment. Most of these did not have a policy in place prior to having a problem, though several conference organizers have since adopted anti-harassment policies or codes of conduct. I felt it would be in PASS' interest to establish a policy so we would be prepared should there be an incident.   "This is Community" Adopting a code of conduct would reinforce our community orientation and send a message about the positive character of the Summit. PASS is a leader among technical organizations for its promotion and support of women. Adopting a code of conduct would further demonstrate our leadership in this area. After researching similar polices from other organizations I published a first draft in April. I solicited feedback from the Board, HQ staff and some PASS members. Incorporating that feedback I presented version 4 at the May Board meeting, where we had a good discussion. You can read the meeting minutes for details. I incorporated points from  the Board discussion as well as feedback from a legal review to produce a final version which has been submitted to the Board. It will be discussed at the Board meeting July 12. You can read the full text at the end of this post. Virtual Chapters In the first quarter we started ramping up marketing support for the Virtual Chapters. Since then each edition of the Connector has highlighted a different VC to help get out the message about the variety of eductional opporutnities that are offered. These VC profiles will continue in the coming months. I was very pleased to welcome the new DBA Fundamentals VC which is geared toward new DBAs, people who are considering entering the field and those transitioning from a different IT role. Thanks to the contributions of Erin Stellato, Michelle Nalliah and Karla Landrum we published a "Virtual Chapter Guidebook". This document includes great advice on how to build and promote a VC. It's also a reference for how things work, from budgets to webinar hosting. I think this document will be extremely valuable to all our VC leaders and am grateful to those who put it together. Board Meeting/SQL Rally The Board met in May in Dallas. Among the items discussed were Global Growth, the budget, future events and the upcoming elections. We covered a lot of ground in two days and I will again refer you to the meeting minutes for details. The meeting schedule allowed us to participate in the SQL Rally networking events and one full day of the conference. I enjoyed having the opportunity to meet and talk with many PASS members. And my hat is off to the SQL Rally organizers who put on an outstanding event. Global Growth PASS has undertaken a major intitiative to reach and engage SQL Server professionals around the world. This Global Growth plan is ambitious and will have a significant impact on the strategic direction of the organization. We have been reaching out to the community for feedback, including hosting Twitter chats and live Town Hall meetings. I co-hosted two of these events and appreciated hearing the different perspectives of the people who participated If you have not done so I encourage you to read about the Global Growth vision and proposed governance changes  and submit your feedback. FY13 Budget July 1 is the beginning of PASS' fiscal year, which makes the end of June the deadline for approving a budget. Each director submits a budget for his or her portfolio. For the Virtual Chapter portfolio I focused on how we can allocate resources to grow the VCs. Budgeting is a give-and-take process, and while I didn't get everything I asked for I'm pleased the FY13 budget includes a significant increase in financial support for the Virtual Chapters. Many people put a lot of work into the budget, but no two people deserve credit more than VP of Finance Douglas McDowell and Accounting Manager Sandy Cherry. Thanks to both of them for getting us across the goal line on time. SQL Saturday I attended SQL Saturdays in Orange Co. CA and Phoenix. It's always inspiring to see the enthusiasm in the community for learning and networking. These events are successful due to the hard work of many volunteers. Thanks to the organizers in both cities for all your efforts. Next Up This quarter we'll be gearing up plans for the VCs at the Summit and exploring ways the VCs can best support PASS' Global Growth work. I'll also be wrapping up work on the Code of Conduct and attending a Board meeting in September. And I will be at SQL Saturday #144 in Sacramento later this month. Here is the language of the Code of Conduct I have submitted to the Board for consideration: PASS Code of Conduct The PASS Summit provides database professionals from a variety of backgrounds with an opportunity to connect, share and learn.  We value the strong sense of community that characterizes this event and we seek to foster an inclusive, professional atmosphere. We are dedicated to providing a harassment-free conference experience for everyone, regardless of gender, race, sexual orientation, disability, physical appearance, religion or any other protected classification.  Everyone at the Summit is expected to follow the Code of Conduct. This includes but is not limited to: PASS Staff, Exhibitors, Speakers, Attendees and anyone affiliated with the event. Participants are expected to follow the Code of Conduct at all Summit events, including PASS-sponsored social events. Participant behavior Harassment includes, but is not limited to, offensive verbal comments related to gender, race, sexual orientation, disability, physical appearance, religion, or any other protected classification.  Intimidation, threats, stalking, harassing photography or recording, sustained disruption of talks or other events, inappropriate physical contact and unwelcome attention will also be considered harassment. Similarly, sexual, racist, derogatory, threatening or other inappropriate language and imagery are not appropriate for any conference venue, including sessions.  Recourse If a participant engages in any conduct that is prohibited under this Code of Conduct, the conference organizers may take any action they deem appropriate, including warning the offender or expelling the offender from the conference. No refunds will be granted to attendees expelled from the Summit due to violations of the Code of Conduct. If you are being harassed, witness harassment, or have any other concerns, please contact a member of conference staff immediately. Conference staff can be identified by their “Headquarters/Staff” shirts and are trained to handle the situation appropriately. A Code of Conduct Committee (CCC) made up of the Executive Manager and three members of the Board of Directors designated by the President will be authorized to take action in response to an incident or behavior that violates the Code of Conduct.

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  • Information Indepth Newsletter - Linux Edition

    - by Paulo Folgado
    INFORMATION INDEPTH NEWSLETTERLinux Edition February 2011 Stay Connected:  NEWS Now Available: Oracle Linux 6 Get the latest release of Oracle Linux 6, which includes Unbreakable Enterprise Kernel.Download Oracle Linux 6 Read More Customers Succeed by Using Oracle Exadata with Oracle Linux Watch IT executives from Bank of America, Linkshare, and Johns Hopkins as they talk about the business challenges they faced and why they chose to use Oracle Linux along with Oracle Exadata as the solution. Watch Now Video Interview: Oracle Senior Vice President Wim Coekaerts Watch Wim Coekaerts, senior vice president, Linux and Virtualization Engineering, as he talks about use cases for Oracle VM Templates as well as the Unbreakable Enterprise Kernel for Linux.Watch Now Hot Off the Press: Migrate Your IBM AIX Environment to Oracle Linux This new white paper provides recommendations for planning and implementing the migration of applications from an IBM Power System running AIX to Oracle's Sun Fire X4800 Server with Intel Xeon 7560 Processor running Oracle Linux 5.5.Read More  Back to Top BLOGOSPHERE Just Launched: The Oracle Linux Blog Follow our new Oracle Linux blog  to hear the latest updates, product news, upcoming events, and all the latest happenings, directly from the Linux team at Oracle. Back to Top TECH DIVE NEW: Linux/Oracle Solaris CommandComparo Site from Oracle Technology NetworkThis site gives equivalent command syntax in Oracle Solaris 10 and Oracle Enterprise Linux 5 for common administrative tasks--focusing particularly on tasks that have tricky syntax or that you frequently need to double check. It acts as a quick reference for administrators who operate in these two OS environments. Free Download: Oracle Linux Release 5.6Did you know that by using Oracle Linux 5.5 or 5.6 along with the Unbreakable Enterprise Kernel, you can get all the benefits of Linux mainline kernel 2.6.32 and more, right now, without the need to reinstall or migrate to a new operating system such as RHEL6?Read Release NotesDownload Oracle Linux 5.6 LSB 4.0 Certification Completed for Oracle Linux 5.5Oracle Linux 5.5 with Unbreakable Enterprise Kernel successfully completed the LSB 4.0 certification.  Back to Top WEBCASTS Boost Your Linux Performance with Oracle's Enhancements in Infiniband and RDSRegister to hear Director of Kernel Engineering Chris Mason cover scalability and performance improvements in Linux environment. Get the Facts Oracle's Unbreakable Enterprise KernelSVP Wim Coekaerts and Senior Director Monica Kumar cover the facts about and benefits of using Unbreakable Enterprise Kernel.  View Other Webcasts on Demand   Back to Top EVENTS Collaborate 2011April 10-14 Orlando, Florida Cloud Summit Events, WorldwideVarious dates (check the city for date/time of event) Datacenter Efficiency Events WorldwideThese events include Linux and Oracle VM sessions.Various dates (check the city for date/time of event) Virtualization Events in North America Find an Oracle Event  Back to Top EDUCATION Get Oracle Linux Certified from Oracle University Oracle University offers courses in both Oracle Linux and the administration of Oracle Database on Linux.  Back to Top CUSTOMER SPOTLIGHT Pella Corporation Improves IT Performance and Efficiency with Oracle Linux and Oracle VM To improve IT performance and efficiency and lower operational costs, Pella Corporation, has standardized on Oracle VM and Oracle Linux. Read More Disney Store Deploys POS in 330 Stores and 7 Countries on Oracle Linux Disney Store is running 1,500 registers worldwide on a broad Oracle technology software stack including Oracle Database 11g, Oracle Fusion Middleware, and Oracle Linux. Read More Back to Top PARTNER SPOTLIGHT Emulex and Oracle Announce Data Integrity Features The Unbreakable Enterprise Kernel provides data integrity checking between Oracle Database applications and Emulex 8Gb/s LightPulse Fibre Channel Host Bus Adapters. Read More Dell Inc. Dell Inc. tested and validated configurations support Oracle Linux. Back to Top STAY IN TOUCH Follow @ORCL_Linux on Twitter for the latest penguin tweets Bookmark Oracle.com/Linux Read the Oracle Linux blog Back to Top  Oracle Information InDepth newsletters bring targeted news, articles, customer stories, and special offers to business people who want to find out how to streamline enterprise information management, measure results, improve business processes, and communicate a single truth to their constituents. Please send questions or comments to [email protected]. For answers to questions about subscribing, unsubscribing, and managing your Oracle e-mail communications preferences, please see the Oracle E-Mail Communications page. Copyright © 2011, Oracle Corporation and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. This document is provided for information purposes only, and the contents hereof are subject to change without notice. This document is not warranted to be error-free, nor is it subject to any other warranties or conditions, whether expressed orally or implied in law, including implied warranties and conditions of merchantability or fitness for a particular purpose. We specifically disclaim any liability with respect to this document, and no contractual obligations are formed either directly or indirectly by this document. This document may not be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without our prior written permission. 

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  • Windows Embedded Compact 7 and Silverlight for Windows Embedded

    - by Valter Minute
    If you want to see a preview of Windows Embedded Compact 7 you can attend a one-day workshop in Milan on the 7th of February. During the workshop you’ll have a chance to use the new tools and see the OS image running on a ARMv7 device. You can register here for the event (registration may already be overbooked, but if you register you’ll notified of other events in your area): http://www.arroweurope.com/it/news-events/arrow-events/dettaglio/article/microsoft-embedded-windows-ce-products-seminar-compact-7-1.html If you want to discover the potential of Silverlight for Windows Embedded running on CE 6.0 R3 or Windows Embedded Compact 7 you can attend a one day workshop at the Microsoft Innovation Center in Tourin on the 14th of February. In a full-day event you’ll be able to learn the theory and use the tools in practice, getting a good overview of this technology and a chance to experiment with the tools. You can register here: https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032473933&Culture=it-IT

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  • Java Developer Days India Trip Report

    - by reza_rahman
    October 21st through October 25th I spoke at Java Developer Days India. This was three separate but identical one-day events in the cities of Pune (October 21st), Chennai (October 24th) and Bangalore (October 25th). For those with some familiarity with India, other than Hyderabad these cities are India's IT powerhouses. The events were focused on Java EE. I delivered five sessions on Java EE 7, WebSocket, JAX-RS 2, JMS 2 and EclipeLink/NoSQL. The events went extremely well and was packed in all three cities. More details on the sessions and Java Developer Days India, including the slide decks, posted on my personal blog.

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  • Monitoring your WCF Web Apis with AppFabric

    - by cibrax
    The other day, Ron Jacobs made public a template in the Visual Studio Gallery for enabling monitoring capabilities to any existing WCF Http service hosted in Windows AppFabric. I thought it would be a cool idea to reuse some of that for doing the same thing on the new WCF Web Http stack. Windows AppFabric provides a dashboard that you can use to dig into some metrics about the services usage, such as number of calls, errors or information about different events during a service call. Those events not only include information about the WCF pipeline, but also custom events that any developer can inject and make sense for troubleshooting issues.      This monitoring capabilities can be enabled on any specific IIS virtual directory by using the AppFabric configuration tool or adding the following configuration sections to your existing web app, <system.serviceModel> <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" /> <diagnostics etwProviderId="3e99c707-3503-4f33-a62d-2289dfa40d41"> <endToEndTracing propagateActivity="true" messageFlowTracing="true" /> </diagnostics> <behaviors> <serviceBehaviors> <behavior name=""> <etwTracking profileName="EndToEndMonitoring Tracking Profile" /> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel>   <microsoft.applicationServer> <monitoring> <default enabled="true" connectionStringName="ApplicationServerMonitoringConnectionString" monitoringLevel="EndToEndMonitoring" /> </monitoring> </microsoft.applicationServer> Bad news is that none of the configuration above can be easily set on code by using the new configuration model for WCF Web stack.  A good thing is that you easily disable it in the configuration when you no longer need it, and also uses ETW, a general-purpose and high-speed tracing facility provided by the operating system (it’s part of the windows kernel). By adding that configuration section, AppFabric will start monitoring your service automatically and providing some basic event information about the service calls. You need some custom code for injecting custom events in the monitoring data. What I did here is to copy and refactor the “WCFUserEventProvider” class provided as sample in the Ron’s template to make it more TDD friendly when using IoC. I created a simple interface “ILogger” that any service (or resource) can use to inject custom events or monitoring information in the AppFabric database. public interface ILogger { bool WriteError(string name, string format, params object[] args); bool WriteWarning(string name, string format, params object[] args); bool WriteInformation(string name, string format, params object[] args); } The “WCFUserEventProvider” class implements this interface by making possible to send the events to the AppFabric monitoring database. The service or resource implementation can receive an “ILogger” as part of the constructor. [ServiceContract] [Export] public class OrderResource { IOrderRepository repository; ILogger logger;   [ImportingConstructor] public OrderResource(IOrderRepository repository, ILogger logger) { this.repository = repository; this.logger = logger; }   [WebGet(UriTemplate = "{id}")] public Order Get(string id, HttpResponseMessage response) { var order = this.repository.All.FirstOrDefault(o => o.OrderId == int.Parse(id, CultureInfo.InvariantCulture)); if (order == null) { response.StatusCode = HttpStatusCode.NotFound; response.Content = new StringContent("Order not found"); }   this.logger.WriteInformation("Order Requested", "Order Id {0}", id);   return order; } } The example above uses “MEF” as IoC for injecting a repository and the logger implementation into the service. You can also see how the logger is used to write an information event in the monitoring database. The following image illustrates how the custom event is injected and the information becomes available for any user in the dashboard. An issue that you might run into and I hope the WCF and AppFabric teams fixed soon is that any WCF service that uses friendly URLs with ASP.NET routing does not get listed as a available service in the WCF services tab in the AppFabric console. The complete example is available to download from here.

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  • Clarification about Event Producer in StreamInsight

    - by sandy
    I need a small clarification about streamInsight, I know by doc's that StreamInsight can handle multiple concurrent Events. But will the event producer be a separate function, for ex: I need to watch a folder for new Files becoz all my sensors il write readings every day in a new file in particular drive. Method 1: FileSystemWatcher: These is the traditional approach where we write a service using FileSystemWatcher to watch a folder for new files,etc.. Upon receiving event from FileSystemWatcher il perform some operations on these files. How to do these using streamInsight??? I came know that using IObservable i can push events to StreamInsight. But is there anything to watch folder is sreamInsight like FileSystemWatcher. OR In order to raise events to streamInsight do we need to use FileSystemWacther? Any suggestion regarding these is highly appreciated. Thank in Advance

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  • Designing for mobile (aka designing for everything)

    - by ihaynes
    Last Saturday I went to 'Developer Developer Developer 10' on the Microsoft campus at Reading (UK). This is one of a series of regular events put on by the developer community for the developer community. The guys who organise these events put in a huge amount of time and effort into them and they are well worth getting to if you can.I enjoy these events because there's always something currently relevant but also I can get an insight into things I don't normally come across or work with.Having said that, it's web related things that always grab my attention and this year one of my favourite speakers, George Adamson, gave a session on 'Designing for mobile (aka designing for everything)'. This is a subject close to my heart and I've tried to put the argument forward myself on http://www.ew-resource.co.uk/mobile/ but George makes a far better job of it that I can.His slideshow from the session is available on http://www.slideshare.net/george.adamson and although you won't get his unique presentation style in the static slideshow, this is well worth watching if you have the time.

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  • Multithreaded UI desktop application issues

    - by igor
    I am involved into development a rich UI project: desktop windows application. Application uses asynchronous invocations and in its turn it should be ready to process external messages (events). The problem is clear: at first time it was built as a simple prototype and it was not stress tested and all was fine. Then application was grown: the number of calls to server and number of events from server are high and performance is low. What is more users noticed that sometimes performance is extremal low. Asynchronous invocations based on thread pool (BeginInvoke, EndInvoke), external events are going from WCF service (.NET 3.5). My goal is synchronization of all tasks and putting priorities to every executions in desktop application. My question is: is there any practice how to reach my goal: patterns, task priority list, others? What should I do at first, second and next times? Thanks

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  • Multithreded UI desktop application issues

    - by igor
    I am involved into development a rich UI project: desktop windows application. Application uses asynchronous invocations and in its turn it should be ready to process external messages (events). The problem is clear: at first time it was built as a simple prototype and it was not stress tested and all was fine. Then application was grown: the number of calls to server and number of events from server are high and performance is low. What is more users noticed that sometimes performance is extremal low. Asynchronous invocations based on thread pool (BeginInvoke, EndInvoke), external events are going from WCF service (.NET 3.5). My goal is synchronization of all tasks and putting priorities to every executions in desktop application. My question is: is there any practice how to reach my goal: patterns, task priority list, others? What should I do at first, second and next times? Thanks

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  • Use of Service Bus in a Pub-Sub Engine

    - by JoseK
    In one of our projects, we've built a Publisher - Subscriber Engine on Oracle Service Bus. The functionality being a series of events are published and subscribers (JMS queues) receive these whenever a new event is published. We are facing some technical issues now, performance-wise and hence an architectural review is underway. Now for my questions: Architecturally the ESB has to publish events into a DB and read from the DB which users wish to be notified, then push the event onto their respective queues. There is a high amount of DB interaction and the question is whether ESB should be having such high amount of interaction with the DB in the first place? Or should there have been some alternate component responsible for doing this. Alternately is there any non-DB approach in which we can store the events and subscribers? Where else can this application data be held within the ESB context?

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  • Version hash to solve Event Sourcing problems

    - by SystematicFrank
    The basic examples I have seen about Event Sourcing do not deal with out of order events, clock offsets in different systems and late events from system partitions. I am wondering if more polished Event Sourcing implementations rely on a version stamp of modified objects? For example, assuming that the system is rendering the entity Client with version id ABCD1234. If the user modifies the entity, the system will create an event with the modified fields AND the version id reference to which version it applies. Later the event responder would detect out of order events and merge them.

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  • Why is my google translate data not showing up in analytics?

    - by learnvst
    I have a google translate widget on my website with gaTrack set to true and the correct gaId, but no translate events show up in analytics under content Events Overview after a week of the widget being live. The code snippet below was auto generated by the translate website, and works fine on the site. Any ideas why I'm not getting any translate events data? <li> <div id="google_translate_element"></div><script type="text/javascript"> function googleTranslateElementInit() { new google.translate.TranslateElement({pageLanguage: 'en', layout: google.translate.TranslateElement.InlineLayout.SIMPLE, gaTrack: true, gaId: 'UA-blahblah'}, 'google_translate_element'); } </script><script type="text/javascript" src="//translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script> </li>

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  • Is it a good pattern that no objects should know more than what it needs to know?

    - by Jim Thio
    I am implementing a viewController class. The view controller class got NSNotification when the Grabbing class start or finish updating. I have 2 choices. I can make the grabbing class to provide a public read only property so all other classes can know whether it is still uploading. Or I can let view Controller to listen to 2 different events. Start updating and finish updating events. The truth is the viewController do need to know whether the grabbing class is still updating or not at any other time. So I am thinking of creating 2 events would be a better way to go. Actually, what do you think?

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  • Why does my application hang in interruptible state?

    - by Greg
    Hello, I am running on Ubuntu 10.04 LTS Server an GTK application that used to work fine. It suddenly started to hang in interruptible state (Sl+) without any apparent reason. Here is a snippet of the strace: poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}], 2, 0) = 0 (Timeout) poll([{fd=5, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=5, revents=POLLOUT}]) writev(5, [{"\2\30\4\0\224\4\240\0\0@\0\0\37\0\240\0\2\4\4\0\224\4\240\0\0@\0\0\37\0\240\0"..., 192}, {NULL, 0}, {"", 0}], 3) = 192 read(5, 0x2ba9ac4, 4096) = -1 EAGAIN (Resource temporarily unavailable) I googled that line read(5, 0x2ba9ac4, 4096), which seems to be more significant, and it seems that many other applications tend to have the same problem. I tried to restart my X server, but it didn't help. Do you have an idea how to solve this problem?

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  • How SQL Saturday could be better

    - by AaronBertrand
    I've been to a lot of SQL Saturdays. They are great events to attend - from a community standpoint, from a learning standpoint, and from a speaker growth standpoint. Who could ask for more, right? Great sessions, from passionate speakers willing to both teach and learn, fantastic networking opportunities and lunch. All for free, or at a very low cost - some events need to recover costs and charge $10 for lunch. Still a phenomenal bargain IMHO. But we all know that these events aren't perfect... there...(read more)

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  • SharePoint Saturday Huntsville in need of Speakers and Sponsors&hellip;

    - by MOSSLover
    So I’ve been to events with Cathy, Lori, and Laura.  They are good people.  Honestly, the best event I ever attended was SharePoint Saturday Ozarks.  I had a crappy week and I got there the actual day of the event.  Hanging out with the three of them plus Joy made everything so much better.  Then there was devLink and SharePoint Saturday DC and a few other events sprinkled into the mix.  I was going to attend Birmingham but the timing was bad and other things occurred.  Now I have the opportunity to attend Huntsville.  I know some of you are thinking Alabama what’s to offer there?  You won’t know until you go to the event.  Come on guys you know you want to speak or sponsor there event so go here:  http://www.sharepointsaturday.org/huntsville. Technorati Tags: SharePoint Saturday,Huntsville,SharePoint Events

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  • Data architecture for event log metrics?

    - by elliot42
    My service has a large ongoing number of user events, and we would like to do things like "count occurrence of event type T since date D." We are trying to make two basic decisions: What to store? Storing every event vs. only storing aggregates (Event log style) log every event and count them later, vs. (Time-series style) store a single aggregated "count of event E for date D" for every day Where to store the data In a relational database (particularly MySQL) In a non-relational (NoSQL) database In flat log files (collected centrally over the network via syslog-ng) What is standard practice / where can I read more about comparing the different types of systems? Additional details: The total event stream is large, potentially hundreds of thousands of entries per day But our current need is only to count certain types of events within it We don't necessarily need real-time access to the raw data or aggregation results IMHO, "log all events to files, crawl them at a later time to filter and aggregate the stream" is a pretty standard UNIX Way, but my Rails-y compatriots seem to think that nothing is real unless it's in MySQL.

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  • What to use for an event listing site? [on hold]

    - by Vykintas
    I have a site which lets users buy & sell tickets, but it's built on wordpress & buddypress. So it's very heavy and messy. I would like to re-do the whole site on something lighter, cleaner and solid. The main functionality for user would have to be as follows: Register or login via Facebook. Create events and sell tickets to them. See ticket sales statistics Upload photos and associate those with events. Buy event tickets, print pdf ticket. Comment, favourite and like events. What would be your suggestions? PHP framework? CMS? CMF? I must say that I'm a front-end dev so building a system from scratch on my own would take a while. I'd be interested more in a "skeleton" app solution or something similar.

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  • How is this paradigm/style called?

    - by McMannus
    I have the following situation: I'm developing an add-in for a UML modeling tool. The models that can be created by the user are stored inside the main application and a limited access to the models is given through its API. However, the add-in has a lot of callbacks for events that are triggered by the main application, when changes to the model occur by the user. Since the models are already stored once in the main application, I considered it not practicable to duplicate the models in the add-in, which leads to the fact that I have only behavior in the add-in, rather than having a state. This behavior is mainly expressed by static functions, that are organized in functional cohesive classes. The callbacks for the events have always references to the model elements relevant for the specifc event that ocurred. First, it seemed to me that this is a procedural style in general, but procedural style doesn't consider events/callbacks, so this boils down to the question. How is this programming style called?

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  • Do games use threads?

    - by Nubcake
    I understand that the concept of how a game runs i.e while (game_loop = true) { //handle events // input/output/sound etc } But it has come to my attention while programming in another HLL is do some games use threads for certain operations? For example take any Pokemon game ; during interaction a textbox appears to display information. Now I've been trying to simulate that sort of textbox and the only way I could have got it to be exactly the same is by using a loop and yes once a loop is started there is no way to handle window events unless they are handled again inside the loop itself. I couldn't have used this loop inside a different thread other than the main one (due to a DirectX limitation) so the only option was to use it inside the main program thread. I was wondering if some games work like this ; do they only use the main program thread and handle events again if they're inside a loop? Edit: I forgot to mention this is about console games not PC games! Thanks Nubcake

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