Posts tagged mediator
(2/2) Using the MetaData Services (MDS) in a SOA environment
0It has been almost a year since my last post about the metadata services. I talked about how-to set up a File-based MDS and DB-based MDS. This post talks about the usage of the files, placed in the MDS, in the different components available in a SOA composite. If the MDS is a new thing for you then I advise to read my previous about this subject first.
You can spot the presence of a file that is a reference to the MDS if it uses the oramds: URI annotation. Files are no longer referenced to a hardcoded or relative file path.
To start using you’re MDS that you have set up we will create a new SOA application. Let call the application WorkflowSOAapp and create a SOA project and call it WebformService.
Kom kennismaken met AMIS en doe mee met uitdagende projecten
0Ben jij een (junior) Oracle consultant die een stap verder wil maken? Wil je verder groeien en ontwikkelen tot principal consultant? AMIS geeft je de kans om die stap te zetten. Bij ons krijg je de ruimte om te experimenteren én te leren samen met de experts op je vakgebied.
Laat ons in een vrijblijvend gesprek vertellen welke mogelijkheden we je kunnen bieden. Neem voor een afspraak met een van onze consultants contact op met Eva.van.der.kleij@amis.nl of bel haar op 030-6016000. Je bent van harte welkom.
AMIS merkt dat haar concept van hoogwaardige en kennisintensieve dienstverlening erg succesvol is. Onze toekomst ziet er erg aantrekkelijk uit met interessante opdrachten bij toonaangevende klanten. Vandaar dat we op zoek zijn naar uitbreiding van ons team.
Denk niet direct dat je hiervoor te weinig kennis of ervaring hebt: jouw toekomstige ervaren collega’s doen niets liever dan jou verder helpen. Ons trainingsprogramma voorziet in een grote diversiteit aan opleidingen en tijdens onze interne kennissessies kun je op veel terreinen iets van je collega’s opsteken. Concreet hebben we de volgende vacatures:
Introducing Decision Tables in the SOA Suite 11g Business Rule component through a game of Rock, Paper and Scissors
0The Business Rule component in SOA Suite 11g is used to implement business logic. The logic is extracted from BPM or BPEL process definitions for from Java or other program code, exposed to be invoked from those contexts and defined in a way that makes it accessible to the business. That at least is the theory. Business Rules capture logic that ranges from the very simple – simple IF/THEN rules for allowing or disallowing based on one input parameter – to very complex, performing extensive ns and calculations, for example using the Decision Table. The Decision Table is a smart, compact way of clustering many IF/THEN rules together, as will be demonstrated in this article.
This article demonstrates how the decision table can be put to good use to implement the business logic behind the classical game of Rock, Paper and Scissors. (for a refresher on that game, see: http://en.wikipedia.org/wiki/Rock-paper-scissors).
Before even opening JDeveloper for working on the Business Rule, let’s briefly discuss the game itself: a simple game, played with two players. At the same time, they raise their hand, indicating either a rock, a pair of scissors or a piece of paper. The rules of the More >
Jekyll and Hyde or The case of the multiple identity syndrome – Using Identity Cross References in Oracle 11g SOA Suite
1The 11g SOA Suite brings us the Service Fabric that has messages flowing from one SCA Service Component to the next – Mediators and BPEL processes are called from inbound adapter services or external consumers and may call out to references to external providers or outbound adapter service. In this idyllic world, much of the work actually going on is the mapping of messages from one (service’s) domain to the next. Of course we try to converse as much as possible in terms of canonical message structures, but sooner or later we come to the boundary of our domain and need to transform again to some domain or service specific message structure. Domain Value Mapping
In addition to the mapping of the message structure, we usually have to put up with some level of value mapping as well: different domains frequently use -slightly or hugely -different labels for the same concept. One domain may use M, F and N for gender whereas another has MALE, FEMALE and UNKNOWN or even MAN, WOMAN and UNDECIDED. Messages that have to convey the gender will have to abide by the vocabulary in the target domain. That means that frequently message have to undergo domain value mapping in addition to plain More >
Publish SOA Composite application as EJB to be invoked from Java applications using EJB Binding
0With the recent (April 2010) SOA Suite 11g R1 Patch Set 2 (11.1.1.3.0), several new capabilities have been added to the SOA Suite. One these is the EJB Binding. Or rather, an enhanced version of this binding. In previous releases, this binding was available to provide interaction with SDO enabled EJBs – based on a WSDL interface and XML messages. The PS2 release added full Java support to the EJB binding. This means that we do not have to concern ourselves with WSDL and XSD that maps to the Java interface we want to invoke or expose, nor with sending a XML based payload when we invoke the composite service. All we need is the Java interface that describes either the EJB that we want to invoke (for an EJB Binding Reference) or that we want to expose (for an EJB Binding Service).
Steps:
1. Create Composite like always
2. Create a Java Interface (and possibly Java domain classes or bean types describing the structure of the input and ouput of the methods on the EJB (that should correspond with the operations available in the Composite application)
package nl.amis.utilities; public interface FilterAndTranslate { public String translate(String input); }Note: steps 1 and 2 can be More >
Calling an EJB from a SOA Composite Application using the EJB Binding based on Java Interface
5I am currently reworking Chapter 12 for the SOA Suite 11g Handbook. This chapter describes various types of interaction SOA Composite Applications can have with Java applications and components. Since the initial creation of this chapter – some 6 months ago – we have had the Patch Set 2 release of the SOA Suite. This patch set introduced some additional functionality in this particular area of the SOA Suite, including the EJB Binding directly based on a Java Interface rather than on an SDO service created for the EJB. While that last option did the job, it requires manipulation of the EJB that is to be invoked – to SDO enable it – and that was undesirable and sometimes even impossible.
This article describes about the simplest way to get going with the EJB Binding – Java based – in Patch Set 2 (11.1.1.3.0). Building on this example, you will probably find yourself able to do useful things with it.
The steps we will go through are:
1. Create the EJB that is to be invoked from the Composite application through EJB Binding. Make sure the remote interface is created as well. 2. Deploy this EJB (in this simple example to the same WebLogic Managed Server that is running the SOA More >
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