[bpmn-dev] Two questions regarding output of the eclipse.bpmn2 api

[tihomir surdilovic <tsurdilovic@xxxxxxxxx>]

Hi guys, I am using eclipse.bpmn2 api to produce bpmn2 for the jBPM5
    project and ran into two issues I would love to have some insight
    on. 
    Both questions are concerning the following example output:
    
    <bpmn2:definitions
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://www.omg.org/bpmn20"
    xmlns:bpmn2="http://www.omg.org/spec/BPMN/20100524/MODEL"
    xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
    xmlns:dc="http://www.omg.org/spec/DD/20100524/DC"
    xmlns:di="http://www.omg.org/spec/DD/20100524/DI"
    xmlns:drools="http://www.jboss.org/drools"
    id="6018529e-e1db-4fc7-abff-c8574c49e754"
    xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL
    BPMN20.xsd" name="sa"
    targetNamespace="http://www.omg.org/bpmn20">
       <bpmn2:itemDefinition id="_xItem" structureRef="String"/>
          <bpmn2:process id="sa" drools:packageName="defaultPackage"
    drools:version="1" name="sa" isExecutable="true">
             <bpmn2:startEvent
    id="_0495796B-D9E5-4079-A6A9-EF9706011D7E" name="">
               
<bpmn2:outgoing>_93664981-BF49-45BD-BED6-35CC0E512DEF</bpmn2:outgoing>
             </bpmn2:startEvent>
             ...
             <bpmn2:property id="x" itemSubjectRef="_xItem"/>
         </bpmn2:process>
    ...
    </bpmn2:definitions>
    
    1) The first problem I have is the id attribute of the definitions
    element. I do not know what in the ecore model controls its type. In
    BPMN20.ecore there is a Definitions element defined which extends
    from BaseElement, however changing the type of the id of BaseElement
    from EString to NCName (which is really needed here..the id should
    NOT start with a number) changes the type of all elements in the
    document EXCEPT the definitions element. Could someone please tell
    me what part of the ecore model determines the type of the id
    attribute of the definitions element?
    
    2) The produced bpmn2 in my case has a big problem, in that it does
    not conform to Semantics.xml. Specifically Semantics.xml defines a
    sequence for the process element:
    
    
    <xsd:element name="process"
      type="tProcess" substitutionGroup="rootElement"/>
      <xsd:complexType name="tProcess">
      <xsd:complexContent>
      <xsd:extension base="tCallableElement">
      <xsd:sequence>
      <xsd:element ref="auditing" minOccurs="0" maxOccurs="1"/>
      <xsd:element ref="monitoring" minOccurs="0" maxOccurs="1"/>
      <xsd:element ref="property" minOccurs="0"
      maxOccurs="unbounded"/>
      <xsd:element ref="laneSet" minOccurs="0"
      maxOccurs="unbounded"/>
      <xsd:element ref="flowElement" minOccurs="0"
      maxOccurs="unbounded"/>
      <xsd:element ref="artifact" minOccurs="0"
      maxOccurs="unbounded"/>
      <xsd:element name="supports" type="xsd:QName" minOccurs="0"
      maxOccurs="unbounded"/>
      </xsd:sequence>
      <xsd:attribute name="processType" type="tProcessType"
      default="none"/>
      <xsd:attribute name="isClosed" type="xsd:boolean"
      default="false"/>
      <xsd:attribute name="definitionalCollaborationRef"
      type="xsd:QName" use="optional"/>
      </xsd:extension>
      </xsd:complexContent>
      </xsd:complexType>
    
    but as you can see for example eclipse.bpmn2 api produce output that
    does not follow this sequence (the property elements for example are
    placed as last ones). 
    This forces me to turn of xml validation alltogether when trying to
    execute the bpmn2 in runtime engines such as jBPM. 
    Is there a setting or anything else that forces the output xml to
    conform the the schemas I assume were used to create the ecore
    model?
    
    I opened two questions on the user forums on this, but am getting no
    traction so asked Antoine and he recommended me to try this list.
    
    Any inputs on this are very very welcome. I am willing to do any bug
    fixes and contribute patches in case any of these are actually
    bugs..so in that case just guidance is needed :)
    
    Thanks!
    tsurdilo