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Subject: Issue - R2 - Zero or Negative Duration Values


This issue has been added to the wsbpel issue list with a status of "received". The status will be changed to "open" if a motion to open the issue is proposed and that motion is approved by the TC. A motion could also be proposed to close it without further consideration. Otherwise it will remain as "received".

The issues list is posted as a Technical Committee document to the OASIS WSBPEL TC pages on a regular basis. The current edition, as a TC document, is the most recent version of the document entitled in the "Issues" folder of the WSBPEL TC document list - the next posting as a TC document will include this issue. The list editor's working copy, which will normally include an issue when it is announced, is available at this constant URL.

Issue - R2 - Zero or Negative Duration Values

Status: received
Date added: 10 Sep 2006
Date submitted: 07 September 2006
Submitter: Dieter Koenig
Description: The XML Schema data type "duration" allows zero or negative values (see http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/#duration): "An optional preceding minus sign ('-') is allowed, to indicate a negative duration".

The WS-BPEL 2.0 specification (public review draft) is silent w.r.t. the behavior if a specified duration has a zero or negative value.
Submitter's proposal: I propose that language is added which specifies that

  1. wait and onAlarm are immediately executed if a specified duration has a zero or negative value
  2. zero or negative values are disallowed for repeatEvery
10.7. Delayed Execution - Wait Add to the end of the first paragraph: "If a specified duration value is zero or negative then the wait activity completes immediately."

11.5. Selective Event Processing Pick Add to the end of the second bullet in the second paragraph: "If a specified duration value is zero or negative then <onAlarm> event occurs immediately. Again, the handling of race conditions is implementation dependent."

12.7.2. Alarm Events Add after the fourth sentence in the first paragraph: "If the specified duration value is zero or negative then the <onAlarm> event is executed immediately.". Add to the end of the first paragraph: "If the specified duration value is zero or negative then the standard fault bpel:invalidExpressionValue MUST be thrown."

12.7.4.1. Alarm Events Add to the end of the first paragraph: "If the specified duration value is zero or negative then the standard fault bpel:invalidExpressionValue MUST be thrown."


Changes: 10 Sep 2006 - new issue

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