This Note walks the reader through development of a Java
CAPS 6/JBI-based / OpenESB-based solution that addresses a Healthcare-related
business problem. The Note elaborates on the healthcare background necessary to
get a notion of what is being done and why, and provides detailed steps
required to implement and exercise the solution to the business problem.
We will use the HL7 Binding Component, the File Binding
Component, the JMS Binding Component, the SOAP/HTTP Binding Component, the BPEL
2.0 Service Engine, the JavaEE Service Engine, the HL7 Encoder and EJB-based
Web Services in a JBI-based solution.
In the process we will create XML Schema Documents (XSDs),
Web Services Description Language Documents (WSDLs), a BPEL 2.0 Business
Process, an EJB-based “Implementation First” web service, an EJB- and
WSDL-based “Interface First” web service, a bunch of Composite Applications,
BPLE 2.0 mapping, BPEL 2.0-based Web Service orchestration, on-the-fly
conversion of HL7 version 2.3.1 delimited messages to their XML equivalents. We
will get a pretty good exposure to what OpenESB and Java CAPS 6/JBI components
look like, how they work and how they can be used to create real business
solutions. Above all, we will develop and test a solution that is more
sophisticated then the customary “Hello World” examples but not so complex as
to take too long to build and become too hard to comprehend by a novice user.
The particular business problem and the particular solution
came about because once upon a time there was intent to build a series of
related OpenESB projects – HL7 Processor, MDM Processor and IEP Processor -
receive HL7 v2.x delimited messages
convert HL7 v2.x messages to their equivalent XML format
split message stream into ADT A01s, ADT A03s and other
convert A01s to an abbreviated Custom Patient XML format
convert A03s to an abbreviated Custom Discharge format
send Custom Patients to a JMS Queue for processing by a MDM solution
send Custom Discharges to a JMS Queue for processing by an IEM solution
have the MDM process Custom Patients into a Master Patient Index
have the IEP process Custom Discharges to flag excessive length of stay
The MDM Processor and the IEP Processor made it to the Sun CEC
2008 as demonstrations, with associated Tutorials by Tom Barrett, and
demonstration recordings by me. The HL7 Processor did not make it. With the
appearance of Java CAPS 6 Update 1 more JBI components made it into the
officially supported Sun product. While the HL7 BC and the HL7 Encoder did not
make it into this Update they will, eventually. Both components are already
available from the OpenESB site and can be installed into the Java CAPS 6
Update 1 installation as unsupported components. This is what we will do for
Following the CEC 2008 Conference in Las Vegas, where the Java CAPS Stream saw a bunch of presentations and demonstrations, I am happy to offer screencasts of the three demonstration sessions I recorded for the event.
The GlassFish ESB screencast is the ScreenCast of the CEC 2008 GlassFish ESB Essentials Lab
demonstration. This is a
recording of the demonstration described in detail by Tom Barrett in
the GlassFish ESB Tutorial and Lab document. The screencast is an extended version of what the CEC audience got to see. In this screencast I use the OpenESB distribution to discuss, design and implement an abbreviated Supply Chain solution. I use the File BC, the SOAP/HTTP BC, BPEL 2.0 SE, the Customn Ecoder, the XSD Editor, the WSDL Editor, BPEL correlations, BPEL Pick wit Timer, CASA Editor and a bunch of other OpenESB/GlassFish ESB featiures and facilities. Watching the screencast will give you a pretty good idea what the tooling looks like, how easy it is ti use it, how a theoretical requriement can be turned into a practical design and how that design can be implemented and exercised using the tooling and infrastructure you can get free of charge and use as much as you might desire.
Data for the following two screencasts/demonstrations is produced by the solution discussed in the next blog entry, which ought to precede these two.
The Java CAPS 6/Mural Master data Management screencast is the ScreenCast of the CEC 2008 Java CAPS Essentials Master Data Management (MDM) Lab demonstration. This is a recording of the demonstration described in detail by Tom Barrett in the Java CAPS Essentials MDM Tutorial and Lab document. In the screencast I discuss what the Master Data Management (MDM) is, how a Healthcare enterprise might leverage it to improve its business and how the OpenESB or Java CAPS 6 can be used to implement MDM. I use OpenESB to design a Master Patient Index Data Model, implement it with the tool, generate Data Model-based Master Index Data Management Web Application, build an integration solution to feed the MDM solution with transactional data form Hospital Information Systems and build a broadcast processor solution that can be used to send master patient index updates to downstream systems which have a need to be kept in synch with the enterprise view of the patient. One will get a very good idea of what the core Master Data Management is about, how easy it is to create the MDM Application and related integration components using the OpenESB/Java CAPS 6 tooling, and how the business of maintaining master patient index looks and works like.
The Java CAPS 6 / Intelligent Event Processor screencast is the ScreenCast of the CEC 2008 Java
CAPS Essentials IEP Lab demonstration. This is a recording of the demonstration described in
detail by Tom Barrett in the Java CAPS Essentials IEP Tutorial and Lab
document.The screencast is what the CEC audience got to see. In this screencast I demonstrate how an Intelligent Event Processing (IEP) solution is built and exercised. The solution addresses a Helathcare business problem - it calculates an Average Length of Stay for each patient in a sliding time window, based on data from an ADT A03 HL7 Discharge message, works out which patients' Length of Stay exceeds average for the patients in the window by 1.5 times, and passes records related to these patients on while discarding 'normal' records.
The AVIs were recorded with Camtasis Studio. You may need a Camtasia Player to playe them on Windows. You could also try getting a Camtasis codec for your platform/player from the Camtasia site.
I had audio quality problems when directly playing the recordings through Mozilla, which used the Quicktime plugin. The best thing to do is to download the recordings and try different players until one works for you.;
It has been a while. I was busy. One of the things that kept me busy was putting together demonstrations for the CEC 2008 in Las Vegas, then delivering them. As an offshoot of that work I have a fair bit of material to share, which will take some time to put together into a form that can be posted in the blog.This piece is the first one.
Whereas Java CAPS 6 supports interaction with the Java MQ infrastructure through the Enterprise Manager, neither OpenESB nor GlassFishESB include the 'Enterprise' class functionality found in the Java CAPS 'classic', GUI for interaction with the JMS being one of example.
Here is a step-by-step on how to configure Hermes JMS (http://www.hermesjms.com/) for use with Java MQ, distributed as part of the OpenESB, GlassFishESB and Java CAPS 6. <- This link points to the original post.
Java CAPS 5.x used to have a Scheduler eWay. Java CAPS 6 also has the Scheduler eWay but only on the Repository-based side. At this point in time there is no Scheduler JCA Adapter or a Scheduler Binding Component. Why would one be bothered by that? One would be bothered because there are business requirements that call for scheduling of activities. The one that comes to mind immediately is polling an FTP server for a file which to transfer. For polling the local file system there is the Batch Inbound JCA, which was used in solutions discussed in JCA Notes 2 and 3. For Batch FTP JCA there is no such thing. Rather then ignoring the issue of lack of the Scheduler JCA Adapter I determined to see what can be done to provide this functionality for non-Repository-based Java CAPS 6 solutions. When asked, one of my colleagues in the US suggested that EJB Timers are the way to go and provided the links to the material. I looked at what was discussed, threw up my hand in the air and exclaimed. I will not quote what I said. In short, EJB Timers may be all very well for a competent Java EE developer but not for a regular Integration, or SOA, developer. EJB Timers are, in my view, way too complex to implement and do not offer sufficient advantage over a Scheduler eWay to make it worth while to spend the time developing a solution that uses them. The next thing I looked at was the open source Quarz scheduler, which also turned up to require more effort then I considered worth while for the Notes. I felt that the simplest thing to do will be to use an external scheduler, a native one, provided by the OS. For Windows, on which I develop for the Notes, there is the “Scheduled Tasks” scheduler. For Unix there are Cron facilities. Both are well know and typically good enough in terms of timer resolution and scheduling flexibility. Above all else, using one does not require me to write scheduler code myself, merely write the code that triggers my solution when the scheduled event fires. So, this Note walks through implementation of a Scheduler solution, which can be used to trigger a Batch FTP JCA solution or any other JCA-based or JBI-based solution that has to be triggered to some schedule.
The attached document explores the ability of Java CAPS 6/JBI and OpenESB to expose and execute Java-based logic as a JBI service. It walks through the process of creation, deployment and execution of a simple File-to-File integration solution that reads an XML record from a text file, invokes java logic that operates on that record then writes the XML response record into a file.
There are errors in pictures on pages 12 and 13. The WSDL name in the pictures does not correspond to the name in the text. This error is corrected in revision 1.1 of the document, 04File2FielJavaEE_1.1.pdf. Thanks to Juraj Kazda for spotting the issue.
This document is intended to help you get over the initial hurdles of exploring Java CAPS 6/JBI and OpenESB. It walks through the process of creation, deployment and execution of a simple File-to-File integration solution, and a simple File to BPEL Process to File solution, with detailed step-by-step illustrations. Both solutions use inbound files with multiple records. The focus is the practice of using JBI components not the theory of JBI. This document addresses the integration solution developers, not developers of Service Engines or Binding Components. The projects use JBI components only, that’s why they are just as good for OpenESB exploration as they are for Java CAPS 6/JBI exploration. JBI (Java Business Integration) is not discussed to any great extent. JBI artifact names are used in discussion but not elaborated upon. Explanations are provided where necessary to foster understanding of the mechanics of developing integration solutions using JBI technologies in OpenESB and Java CAPS 6/JBI. Java CAPS 6 and OpenESB are two of a number of toolkits that implement the JBI specification (JSR 208). When I use an expression like “In JBI …” I actually mean “In JBI as implemented in Java CAPS 6 and OpenESB …”. The same things may well be implemented differently in other JBI toolkits. Java CAPS 6 “Revenue Release” is used and shown in illustrations. OpenESB can be used instead however the appearance of components shown in illustrations may vary somewhat.
In this Blog I post abstracts of articles / writeups / notes on various aspects of Java CAPS and SOA Suite including solutions, discussions and screencasts. The links to the referenced material are included in the bodies of the abstracts.