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Does BPMN Editor generate invalid UniqueId? (id attribute in XML file) [message #1855017]

Fri, 23 September 2022 14:32

Karl Degen

Messages: 2
Registered: September 2022

Junior Member

When creating a BPMN Model, the editor generates for each element the UniqueId in the model. UniqueId becomes the id attribute in the corresponding XML file.

When loading such a file into KIE JBPM, the XML parser throws an error, because some id attributes are no valid NCName fields.

(Parser in my case is com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.class of Zulu JDK 17 jrt-fs.jar.)

This is treated an error, because a NCName must start with an letter as first character, not a digit. So, if I search&replace all such occurances, everything is fine.

Example from BPMN-XML file

    <scriptTask id="1aa064d1-a6e2-4dae-823e-eb6ac8c966bd" name="Script" scriptFormat="some URL here" >
      <script>System.out.println("Hello World!");</script>
    </scriptTask>

When I add a prefix liek "id-" to the invalid id "1aa064d1-a6...." the problem is gone.

What's wrong with Eclipse BPMN Editor, or is Red Hat JBPM the problem because it validates against different XSD?

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Re: Does BPMN Editor generate invalid UniqueId? (id attribute in XML file) [message #1855025 is a reply to message #1855017]

Sat, 24 September 2022 07:00

Ralph Soika

Messages: 191
Registered: July 2009

Senior Member

Hi,
this is an interesting observation. I double checked this in the BPMN Specification (chapter 8.2.1). The ID attribute is defined as String and is not restricted to a specific number/char format.
So it may always happen if you exchange BPMN files between different editors the ID can start with a letter or a number.
This seems to be an issue in the JBPM implementation. Can you rise this as an issue to the JBPM Team? JBPM is using Eclipse BPMN too.

===
Ralph

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Re: Does BPMN Editor generate invalid UniqueId? (id attribute in XML file) [message #1855046 is a reply to message #1855025]

Mon, 26 September 2022 07:33

Karl Degen

Messages: 2
Registered: September 2022

Junior Member

Problem really resolved??? JBOSS vs. Red Hat ???

There are two ways to intall plugins for JBPM editing:

My first thy from my message above: Eclipse tools from update site "JBPM 7.48.0.Final - https://downloads.jboss.org/jbpm/release/7.48.0.Final/updatesite/"
These plugins produce the problem I described above.
index.php/fa/42531/0/

My second try: using the plugins from "Red Hat Business Process and Rules Development (BPEL, BPMN2, jBPM, Drools) - https://devstudio.redhat.com/12/stable/composite/integration-stack/12.11.0.GA/"
This Time the editor looks different and does not produce the wrong id attributes of BPMN diagram nodes.
index.php/fa/42532/0/

So, JBOSS and Red Hat and JBPM are related, aren't they? Whats wrong? Why does the original JBPM editor not work? I will try to raise a bug ticket at jBPM.

Attachment: eclipse_bpmn_wrong.png
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Attachment: eclipse_bpmn_right.png
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