Bug: Schema re.getPixels()

[wmoore]

When trying to render an Image in the Blitz Gateway, we call imageWrapper.getChannels() which uses re.getPixels().iterateChannels()

Environment:
Request Method: GET
Request URL: http://localhost:8000/webgateway/render_image/1/0/0/?c=1,2,3,4

Traceback:
File "/Users/will/Desktop/OMERO/dist/lib/python/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/Users/will/Desktop/OMERO/components/tools/OmeroWeb/omeroweb/webgateway/views.py" in handler
  539.         return func(request, *args, **kwargs)
File "/Users/will/Desktop/OMERO/components/tools/OmeroWeb/omeroweb/webgateway/views.py" in render_image
  1078.     pi = _get_prepared_image(request, iid, server_id=server_id, _conn=_conn)
File "/Users/will/Desktop/OMERO/components/tools/OmeroWeb/omeroweb/webgateway/views.py" in handler
  539.         return func(request, *args, **kwargs)
File "/Users/will/Desktop/OMERO/components/tools/OmeroWeb/omeroweb/webgateway/views.py" in _get_prepared_image
  961.         if not img.setActiveChannels(channels, windows, colors):
File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/__init__.py" in setActiveChannels
  5989.         for c in range(len(self.getChannels())):
File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/__init__.py" in wrapped
  5363.             return f(self, *args, **kwargs)
File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/__init__.py" in getChannels
  5968.             return [ChannelWrapper(self._conn, c, idx=n, re=self._re, img=self) for n,c in enumerate(self._re.getPixels(self._conn.CONFIG['SERVICE_OPTS']).iterateChannels())]
File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/__init__.py" in __call__
  3197.             return self.handle_exception(e, *args, **kwargs)
File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/__init__.py" in __call__
  3194.             return self.f(*args, **kwargs)
File "/Users/will/Desktop/OMERO/dist/lib/python/omero_api_RenderingEngine_ice.py" in getPixels
  491.             return _M_omero.api.RenderingEngine._op_getPixels.invoke(self, ((), _ctx))

Exception Type: InternalException at /webgateway/render_image/1/0/0/
Exception Value: 

This is also used in Gateway tests, E.g.

python gatewaytest/rdefs.py

Although these tests fail with different (related?) error:

======================================================================
ERROR: testEmissionWave (__main__.RDefsTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "gatewaytest/rdefs.py", line 27, in setUp
    super(RDefsTest, self).setUp()
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/scripts/testdb_create.py", line 54, in setUp
    self.prepTestDB()
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/scripts/testdb_create.py", line 126, in prepTestDB
    dbhelpers.bootstrap()
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/scripts/dbhelpers.py", line 412, in bootstrap
    i = i.create()
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/scripts/dbhelpers.py", line 311, in create
    self._createWithoutPixels(client, dataset)
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/scripts/dbhelpers.py", line 378, in _createWithoutPixels
    dataset.save()
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/__init__.py", line 344, in save
    self._obj = self._conn.getUpdateService().saveAndReturnObject(self._obj, sopts)
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/__init__.py", line 3197, in __call__
    return self.handle_exception(e, *args, **kwargs)
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/gateway/__init__.py", line 3194, in __call__
    return self.f(*args, **kwargs)
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero_api_IUpdate_ice.py", line 127, in saveAndReturnObject
    return _M_omero.api.IUpdate._op_saveAndReturnObject.invoke(self, ((obj, ), _ctx))
ValidationException: exception ::omero::ValidationException
{
    serverStackTrace = ome.conditions.ValidationException: not-null property references a null or transient value: ome.model.core.Image.pixels; nested exception is org.hibernate.PropertyValueException: not-null property references a null or transient value: ome.model.core.Image.pixels
	at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:648)
	at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
	at org.springframework.orm.hibernate3.HibernateInterceptor.invoke(HibernateInterceptor.java:117)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

I am currently on a recent merge of my schema branch and the main schema branch:

*   835c133 (HEAD, schema-2012-06) Merge remote-tracking branch 'ome/schema-2012-06' into schema-2012-06
|\  
| *   7b709e0 (ome/schema-2012-06) Merge pull request #176 from ximenesuk/schema-2012-python-tests
| |\  
| * | f12673a Fix test-compile compilation errors related to Timestamp addition.
| * | c4e9c89 Fix cardinality in Instrument.Objectives query. (See #8884)
| * | 405ec57 String --> Timestamp throughout. (See #8862)
| * | 6c838d7 Optional names and Timestamp primitive.

I'll push this to my gh.

[jburel]

Moved from sprint 2012-05-22 (15)