Weblog for the AMIS Technology corner
Lucas Jellema
Lucas Jellema, active in IT (and with Oracle) since 1994. Oracle ACE Director for Fusion Middleware. Consultant, trainer and instructor on diverse areas including Oracle Database (SQL & PLSQL), Service Oriented Architecture, ADF, Java in various shapes and forms and many other things. Author of the Oracle Press book: Oracle SOA Suite 11g Handbook. Frequent presenter on conferences such as JavaOne, Oracle Open World, ODTUG Kaleidoscope, Devoxx and OBUG. Presenter for Oracle University Celebrity specials.
Homepage: http://www.amis.nl
Jabber/GTalk: lucasjellema@gmail.com
Posts by Lucas Jellema
Review of Oracle Service Bus 11g Development Cookbook (Packt Publishing) by Edwin Biemond, Guido Schmutz, Eric Elzinga et. al.
5/2/2012 - 10:27 pm
Tags: book, Oracle, osb, owsm, REST, review, service bus, soa, soap, ssl, web service
Posted in Books | 1 comment
Recently I gained access to an electronic copy of the just released Oracle Service Bus 11g Development Cookbook, written by five authors – all experts on OSB and three personal acquaintances of mine. I was very interested in learning about the final result after hearing many intermediate comments during the writing process as well as [...]
Intercepting user customization – such as column reordering in tables – in ADF 11g change persistence
4/2/2012 - 7:47 am
Posted in ADF & JHeadstart | No comments
The requirement I was facing was simple: act on column reordering through user drag and drop in a rich table. More specifically: invoke a method in a managed bean whenever the user changes the position (or side or visibility) of a column.
At first it seemed trivial – just use an AttributeChangeListener. When that turned out [...]
Jouw toekomst als Oracle professional – AMIS !!EXTRA!! informatieavond over jouw ontwikkelingspad
24/1/2012 - 10:29 am
Tags: apex, Database, forms, Mobile, modernisering, Oracle, plsql, soa, sql
Posted in General | No comments
Als je dit leest en je bent Oracle professional – ontwikkelaar of administrator – is de kans groot dat je jouw carriere bent gestart in de jaren ‘90, in het tijdperk van Oracle7, Oracle Forms en Client/Server applicaties – net voor de opkomst van Java, internet, mobiel en SOA. Misschien ligt je start daar nog [...]
Masterclass Oracle 11g voor Database Ontwikkelaars – haal meer uit SQL en PL/SQL in 11g
23/1/2012 - 1:59 pm
Posted in Database, Devel. + PL/SQL tools, Oracle, Software Development | No comments
Aanstaande vrijdag 27 januari verzorgt Oracle ACE Director Alex Nuijten bij AMIS Services in Nieuwegein een Masterclass voor Oracle Database Developers: iedereen die met enige regelmaat SQL en/of PL/SQL toepast in zijn of haar werk. In deze Masterclass leidt Alex de deelnemers rond in Oracle Database 11g Release 1 en 2 met als voornaamste doelstelling [...]
Create simple Java application to post JSON message to CometD Bayeux Channel using Apache HttpClient and Maven style NetBeans project
20/1/2012 - 8:19 am
Tags: apache httpclient, cometd, http post, httpclient, Java, json
Posted in Java, Java, JEE, OAS and WebLogic Server, Web | No comments
The objective discussed in this article is to post messages to a CometD Bayeux Channel with a standalone Java Class – without dependencies on CometD. For example to control from Java the Slideshow introduced in the synchronized Slideshow demo application created using CometD (see previous articles Push based synchronized Slideshow demo application implemented using CometD [...]
Publishing to CometD Bayeux Channel from inside the Oracle Database – PL/SQL based push to CometD Web Client
19/1/2012 - 11:11 am
Tags: bayeux, comet, cometd, Database, html, plsql, push, Web
Posted in Database, J(2)EE/Java, Web | 1 comment
In recent articles, I have introduced CometD as framework for Server to Client and Client to Client Push: Running CometD 2 examples – locally on Tomcat using Maven and NetBeans http://technology.amis.nl/blog/14709/running-cometd-2-examples-locally-on-tomcat-using-maven-and-netbeans, CometD 2 Java Client Sample – open project in NetBeans based on Maven pom file, modify sources and run Java Based Comet Client (http://technology.amis.nl/blog/14720/cometd-2-java-client-sample-open-project-in-netbeans-based-on-maven-pom-file-modify-sources-and-run-java-based-comet-client) [...]
Sharing session state between JEE web applications through WebLogic session descriptor of sharing-enabled
18/1/2012 - 9:43 am
Tags: jee, jsf, session, session state, shared session, web application, weblogic
Posted in ADF & JHeadstart, J(2)EE/Java, Java, JEE, OAS and WebLogic Server | 2 comments
Session state in Java Web application is associated with a single (user) browser session on the one hand and typically with a specific web application on the other (server side) hand. Session state is created and maintained in the context of a usually a single web application. However…
We ran into a situation where our web [...]
Using custom functions in EL expressions in JSF 1.x
17/1/2012 - 9:52 am
Tags: adf faces, el, elresolver, Java, javaserver faces, jsf, rich faces, tag library, tld
Posted in ADF & JHeadstart, Java, Java, JEE, OAS and WebLogic Server | 1 comment
EL expressions are one of the main driving forces for JavaServer Faces. Most dynamic characteristics of pages and widgets are governed by EL expressions. In JSF 1.x, there are some limitations for EL expressions that can at times be a little frustrating. One of the limitations is the fact that no custom functions or operators [...]
