Yes debugging is the way in this case, to debug this you will need GeoTools and 
possibly GeoServer source code.
As long as you are using the same source code versions remote debugging should 
work fine.

I would start by putting a debug point in this place:

org.geotools.filter.AttributeExpressionImpl.evaluate(AttributeExpressionImpl.java:229)

This is the method that is failing:
https://github.com/nmco/geotools/blob/64f7229b4c3f059da43a03af9d80932d6224a074/modules/library/main/src/main/java/org/geotools/filter/AttributeExpressionImpl.java#L193-L242

The job of this method is that given a certain feature and a property name it 
will try to extract the
the property corresponding value from the feature using a suitable property 
accessor, in this case
no suitable property accessor could be found, debugging will tell you why :)

Hope it helps.


On 07/05/2017 10:34 AM, aquentin wrote:
Is there any chance to identify the problem using debugger for example ? I
tried to debug, but without success at the moment ( using docker geoserver
with remote debug, maybe bad idea).
I would like to estimate the workload (for development) needed to have
app-schema and solr working.

This subject could be a great solution to address ours performance problems.
I'm in IT department of BRGM, currently working on exposition of Earth
Resources using EarthResourceML.

Thank you.
Kind Regards,
Adrien
a.quen...@brgm.fr



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