- From: Costello, Roger L. <costello@mitre.org>
- Date: Wed, 22 Apr 2009 15:52:38 -0400
- To: "'xproc-dev@w3.org'" <xproc-dev@w3.org>
Hi Folks, Many thanks for your excellent comments! Okay, comparing XProc and BPEL is an apples-to-oranges comparison. I think that sometimes it's useful to hold up next to each other two unrelated things to see where they differ and where they overlap. So, I persist. :-) I've incorporated the changes you suggested. Aside from the apples-to-oranges problem, are there any factual errors in the information? /Roger XProc (XML Pipeline Language)[1] is a general utility for defining XML pipelines. BPEL (Business Process Execution Language)[2] is a declarative orchestration language for business processes. At some level both languages are workflow languages, and with that in mind, here is a side-by-side comparison. ------------------------------------------------ XProc BPEL ------------------------------------------------ W3C technology OASIS technology XML-based XML-based general utility, goal business process level, goal is to provide an 80% is to provide a 100% solution solution supports orchestration of only supports orchestration both REST and SOAP-based of SOAP-based web services web services XProc processors: BPEL processors: Calabash[3] Oracle BPEL Process Manager[4] Apache ODE (Orchestration Director Engine)[5] Sonic Software[6] kinds of flows supported: kinds of flows supported: - sequential - sequential - conditional - conditional - iterative - iterative - parallel - parallel can orchestrate both can only orchestrate (SOAP-based) web services and web services applications (e.g. XML Schema validators, XSLT processors) Does not support Supports event-driven workflows, event-driven workflows e.g. a process may specify that a workflow task is to be executed when a certain message is received, or when a certain time is reached synchronous workflows only synchronous and asynchronous workflows Single-run workflows, Supports long-running workflows i.e. no infinitely (days, months, years), i.e. supports looping workflows infinitely looping workflows does not support workflows does not support workflows that have humans in the that have humans in the loop, i.e. automated loop, i.e. automated workflows only workflows only [1] XProc: http://www.w3.org/TR/2008/WD-xproc-20080814/ [2] BPEL: http://docs.oasis-open.org/wsbpel/2.0/OS/wsbpel-v2.0-OS.pdf [3] Calabash: http://xmlcalabash.com/ [4] Oracle BPEL PM: http://www.oracle.com/technology/products/ias/bpel/index.html [5] Apache ODE: http://ode.apache.org/ [6] Sonic Software: http://www.sonicsoftware.com/products/sonic-bpel-server/index.ssp
Received on Wednesday, 22 April 2009 19:53:14 UTC