Posts tagged event
Fanning Out Events on the Oracle SOA Suite 11g Event Delivery Network
0On the Oracle Technology Network, architecture section, my article titled “Fanning Out Events on the Oracle SOA Suite 11g Event Delivery Network” has just gone live:
This article describes:
how events can be used in Oracle SOA Suite 11g to have business processes impact each other in a meaningful way with maximum decoupling. Specifically, this article describes a solution for fanning out Event Delivery Network (EDN) events to a more fine-grained level. This allows a single event to influence multiple running instances of a Business Process Execution Language (BPEL) process. The article uses the following Oracle SOA Suite 11g components: BPEL , Mediator ,Event Delivery Network, Spring , Locator API , Composite Sensors
The Future of Forms – 15th of May – Nieuwegein, The Netherlands
0Sporting a selection of the world’s best known speakers in the area of Oracle Forms and Forms modernization – on Tuesday 15th May AMIS will host an all day event around Forms, aimed at application architects and lead developers. During this event, we will discuss and demonstrate the most relevant options for moving Forms applications (and Forms developers) to the future. Registration for this event is free – the capacity is limited. See this link for the full program, the abstracts for all the presentations and the biographies of the speakers: http://www.amis.nl/theme/amis/uploadedFiles/PDF/Future%20of%20Forms%20EN%20DAG.pdf.
First steps with jWebSocket – open source Java framework for WebSockets – installation and running samples
6This month, In have been delving into Push architectures for the Web, looking into WebSockets among several other things. WebSockets, a fairly new standard (!) evolved along with HTML 5, specifies a communication protocol that provides an alternative to classic HTTP communication. WebSocket based interaction has lower overhead and – more importantly – is bi-directional which means that push from server to client is really supported (and not just emulated through poll, long poll or streaming responses as is currently the case in comet push style frameworks).
All modern browsers provide support for the WebSocket specification – meaning they can communicate based on the WebSocket protocol (ws:// and wss:// in addition to http:// and https://) and they implement the WebSocket client side (JavaScript) APIs. These API are well defined – http://dev.w3.org/html5/websockets/ – and seem to be truly standard across all browsers.
The WebSocket server side is at this moment not very well defined. Other than the fact that the communication over ws:// and wss:// should be handled by a server, not much has been decided about the server side of WebSockets. Currently, WebSockets is not supported in More >
(Slides for) Push to the limit – rich and pro-active user interfaces with ADF (Oracle Open World 2011)
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Castle in the clouds – Building the Connexys SaaS application with Fusion Middleware
0SaaS applications serve users in many organizations from a single application instance running in a cloud. Common SaaS requirements include: customization including hiding and adding fields, managing boilerplate text & influencing the look & feel and a Service API for retrieving and manipulating data as well as allowing registration of listeners – applications outside the cloud that are notified by the SaaS application of events. Deep link navigation into the SaaS application allows visual integration with local applications.
Connexys provides a SaaS application (150+ customers) to support human resource and recruitment processes. The Connexys NextGen application is developed on Fusion Middleware using ADF. The application has an impressive number of specific SaaS enhancements (some inspired by Salesforce.com) that make it a compelling & competitive SaaS offering.
Below you will find the slides from the OBUG 2010 presentation that Arne van der Ing and I submitted and prepared for yesterday’s conference.
Come to our Forms2Future event (or “Oracle Classic and what next” event) on April 13th to here more about Connexys and other stories about moving to the future from current Oracle More >
ADF 11g: how events in one region cause other regions to refresh
One of the challenges in building Portal pages is to have events from one Portlet have the desired effect on other Portlets. For example when I select a location on a Map in one Portlet, other Portlets may need to be synchronized to show the weather, the best restaurants and the driving instructions for actually going there. The JSR-168 specification does not address this issue; the upcoming JSR-286 ("Portal 2.0") specs do. Working with ADF 11g, we have some fairly new mechanisms at our disposal, such as Task Flows and Regions, that allow us to construct pages (and applications) that are somewhat reminiscent of Portlets – or at least some of the interesting sides of Portlets in terms of creating relatively simple pieces of (stand-alone) functionality that can be wired together in a larger mashup – where ideally the mashup framework can provide event propagation between the stand alone pieces. In this article, I want to investigate how for example an event occuring in region A – based on a bounded taskflow – can be passed on to region B that is based on another bounded taskflow. (more…)
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