[ome-devel] OMERO: load annotations of projects and datasets

[Tom Kazimiers]

Will,

thanks for your reply, I made some progress.

On 05.06.2012 16:56, Will Moore wrote:
> If you want to use the Java API, look under this bullet point on the OmeroJava page:
> 
> Load all the annotations with a given namespace linked to images.
> 
> Projects and Datasets can be treated in the same way as Images when loading annotations.

Okay, so I managed to load my tag annotations in the namespace
"test_namespace" with:

nsToInclude = ArrayList()
nsToInclude.add( "test_namespace" )
nsToExclude = ArrayList()
proxy = entry.getMetadataService()
annotations = proxy.loadSpecifiedAnnotations(TagAnnotationI.canonicalName, nsToInclude, nsToExclude, param)

Now it isn't clear to me how I restrict this annotation loading
to annotations from a specific project or a dataset. I added to
a dataset and a project one tag annotation in namespace
"test_namespace". When I retrieve annotations like above I get
all annotations.

So is it possible to load project and dataset annotations
separately with this way? The documentation[1] lets me suspect
that proxy.loadAnnotations(…) might be of use here. However, I
couldn't find a correct parameterization for that method -- I
couldn't find out what exactly I have to put there as
"rootType".

And how would I do lazy loading myself to use the applications
I tried in the first place?
 
> However, since you're using Jython, I wondered if the OmeroPy page would be more useful than OmeroJava?
> 
> http://trac.openmicroscopy.org.uk/ome/wiki/OmeroPy
> 
> In Python we have a "Blitz Gateway" which is a client side library that does a lot of lazy loading of the graph, so you can do
> 
> dataset = conn.getObject("Dataset", datasetId)
> for ann in dataset.listAnnotations():
>     print ann
> which is loading the Annotations on the fly.

This would be definitely of help. However for my application
it was easier to have it done with OmeroJava as I will probably
move to Java once I got a better understanding of OMERO. However,
thanks for the suggestion.

Cheers,
Tom

[1] http://hudson.openmicroscopy.org.uk/job/OMERO/javadoc/slice2html/omero/api/IMetadata.html#loadAnnotations

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