We have a family tree. Some people have children, while others do not. We want to sort results by alphabetically listing individuals with children in an initial group, and then those without children in a second group — also alphabetically. Let’s assume there is not an isParent column (nor the equivalent) on the table, but there is a way to determine how many children each individual has.
Oracle BPEL Sensors for Real Time Event Publishing from Business Processes – A Design Perspective
This article is a look at Oracle’s BPEL Sensor approach to publishing real time data and events for in flight BPEL Processes.
Oracle BPEL has tried to fill a gap in the BPEL Spec using sensors. Specifically, sensors allow users to overlay listeners on BPEL tasks and process variables that will generate events out of a process that is being executed. This is definitely a step in the right direction, and does a good job of staying true to the BPEL specification. This document will define what sensors are, how they should be designed into BPEL Processes, and a future outlook of event models.
Asynchronous vs Synchronous BPEL Processes
Asynchronous and Synchronous BPEL processes, as their names imply, process a request in parallel or sequenctially respectively.
Screenshot: Invoke Asynchronous BPEL Process (left) and Synchronous BPEL Process (right)
Amazon EC2 Server Pricing Matrix (Linux and Windows)
I was trying to figure out Amazon EC2 pricing recently, and found myself pulling out a calculator for what they really should provide readily. So, here is a a quick table you can multi-sort that will provide you a format you can actually use to make cost comparisons.