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https://issues.apache.org/jira/browse/CMIS-481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeff Potts closed CMIS-481.
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> Cannot set a property to null
> -----------------------------
>
> Key: CMIS-481
> URL: https://issues.apache.org/jira/browse/CMIS-481
> Project: Chemistry
> Issue Type: Bug
> Components: python-cmislib
> Reporter: Jeff Potts
> Assignee: Jeff Potts
> Priority: Minor
>
> Currently, when you create a props dict and use it with either createDocument
> or updateProperties, the code tries to guess the appropriate cmis element
> name (cmis:propertyString, cmis:propertyDateTime, etc.) by performing a type
> test on the value. It does not currently do a lookup to the type definition
> to determine the property type (or even validate that the property name is
> defined as part of the property).
> Additionally, there is no specific check for None. So if you want to try to
> set a property to null there is no way to do it. The code will treat
> properties set to None as a string. If you happen to be setting a string
> prop, the value will be converted to the string "None". If you happen to be
> setting any other data type, it is likely you'll see a runtime exception.
> >>> doc.properties['sc:level']
> 4
> >>> doc = doc.updateProperties({'sc:level':None})
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/opt/src/chemistry/cmislib/src/cmislib/model.py", line 1947, in
> updateProperties
> **args)
> File "/opt/src/chemistry/cmislib/src/cmislib/model.py", line 283, in put
> self._processCommonErrors(result)
> File "/opt/src/chemistry/cmislib/src/cmislib/model.py", line 315, in
> _processCommonErrors
> raise RuntimeException(error.status, error.url)
> cmislib.exceptions.RuntimeException: Error 500 at
> http://localhost:8080/alfresco/s/cmis/s/workspace:SpacesStore/i/4d783751-0a96-4b01-96a1-2b3e03d45d90
> >>> doc = doc.updateProperties({'sc:difficulty':None})
> >>> doc.properties['sc:difficulty']
> u'None'
> In order to properly set a property to null, the code cannot rely on the type
> test. It will have to do a lookup to the type definition so that it can
> figure out which cmis property element name to use. As long as we're
> incurring the cost of the type definition lookup, we might as well validate
> that the property is defined.
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