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<a href="http://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">Community</a></h1>
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jPDL vs. another process definition language
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reply from <a href="http://community.jboss.org/people/ruds">Rudolf Michael</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/533475#533475">View the full discussion</a>
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<div class="jive-rendered-content"><p>well i have been reading the docs since 2 days now and i can say that i have an 80% clear view on how jBPM works.</p><p>The engine is designed to support multiple DSL, so this is good. and i have also played around with the tutorial in Chapter 3.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I am new to this kind of development and i can see that sooner or later people will have the option to write a program/application using Workflows as the logic says everything can be turned into a workflow.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I am working with a team where one of the guys suggested to have the following architecture:</p><p><a href="http://community.jboss.org/servlet/JiveServlet/showImage/2390/strcuture.png"><span> http://community.jboss.org/servlet/JiveServlet/downloadImage/2390/272-600/strcuture.png </span></a></p><p>as you can see in the above picture, we are building a layer on top of PVM called SMD; all of our classes will extends the jPDL ones and add the extra methods/tags/whatever needed in order to have our own Process Definition Language.</p><p>the bcdl, brdl, bwdl are workflows definition that will extend the SMD structure but everyone has its own xsd schema.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>For me i do see it as re-inventing the wheel; i just can't convince that guy that there's no need for that, he keeps on saying the following:</p><p><span style="color: #ff0000;">As we discuss before, we need to change the XML format from standard SMDL format</span></p><p><span style="color: #ff0000;">To the SMDL format (the SMDL format consist to define the activity under the step tag different from JPDL format).</span></p><p><span style="color: #ff0000;">In JPDL, we have just the custom tag that we can customize our step/activities. </span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>So he wants a new language bc the custom tags will make the graph messy? or will be too much complicated/complex..therefore he decided to write his own tag definition but with extending 90% of it from jPDL</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The other concern that i have is that we will be building our own graph designer using flex. so this might lead us to have our own DSL.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>so i am still kinda lost in here and i thought of sharing this with you guys in case someone is interested to give feedback/comments</p></div>
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<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/533475#533475">going to Community</a></p>
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