XML Based Schema Definition for Support of Inter-organizational Workflow

From: http://www.daimi.au.dk/pn2000/Interchange/papers/det_01.pdf
See: http://www.oasis-open.org/cover/xrl.html
     Exchangeable Routing Language (XRL)

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Appendix 1

The data type definition (DTD) file for the workflow specification

<!ENTITY % routing_element
"task|sequence|any_sequence|choice|condition|parallel_sync|
parallel_no_sync|parallel_part_sync|wait_all|wait_any|while_do|
stop|terminate">
<!ELEMENT route (%routing_element;)>
<!ATTLIST route name ID #REQUIRED
created_by CDATA #IMPLIED
date CDATA #IMPLIED>
<!ELEMENT task (event*)>
<!ATTLIST task name ID #REQUIRED
address CDATA #REQUIRED
doc_read NMTOKENS #IMPLIED
doc_update NMTOKENS #IMPLIED
doc_create NMTOKENS #IMPLIED
result CDATA #IMPLIED
status (ready|running|enabled|disabled|aborted) #IMPLIED
start_time NMTOKEN #IMPLIED
end_time NMTOKEN #IMPLIED
notify CDATA #IMPLIED>
<!ELEMENT event EMPTY>
<!ATTLIST event name ID #REQUIRED>
<!ELEMENT sequence ((%routing_element;|state)+)>
<!ELEMENT any_sequence ((%routing_element;)+)>
<!ELEMENT choice ((%routing_element;)+)>
<!ELEMENT condition (true|false)*>
<!ATTLIST condition condition CDATA #REQUIRED>
<!ELEMENT true (%routing_element;)>
<!ELEMENT false (%routing_element;)>
<!ELEMENT parallel_sync ((%routing_element;)+)>
<!ELEMENT parallel_no_sync ((%routing_element;)+)>
<!ELEMENT parallel_part_sync ((%routing_element;)+)>
<!ATTLIST parallel_part_sync number NMTOKEN #REQUIRED>
<!ELEMENT wait_all (event_ref|timeout)+>
<!ELEMENT wait_any (event_ref|timeout)+>
<!ELEMENT event_ref EMPTY>
<!ATTLIST event_ref name IDREF #REQUIRED>
<!ELEMENT timeout (%routing_element;)*>
<!ATTLIST timeout time CDATA #REQUIRED
type (relative|s_relative|absolute) "absolute">
<!ELEMENT while_do (%routing_element;)>
<!ATTLIST while_do condition CDATA #REQUIRED>
<!ELEMENT stop EMPTY>
<!ELEMENT terminate EMPTY>
<!ELEMENT state (event+)>