Hello, @Ben : Thanks for this help, setting schema-joining to false, allow me to retrieve the first features from solR using app-schema plugin and a lightweight mapping : keeping <attributeMappings>element empty, so the solr Index was (automatically?) mapped to gml_id in my case: <wfs:member><erl:MineralOccurrenceView gml:id="m-301"/></wfs:member>
but now, I would like to map the fields. first, using the select request sent by solr module, I retreived the response : <response> <result name="response" numFound="1" start="0"> <doc> <str name="entity_type">data</str> <arr name="sm_field_status"> <str>historic</str> </arr> <arr name="spell"> <str>historic</str> <str>MI2</str> <str>FR</str> <str>Fance</str> <str>985</str> <str>Ag</str> </arr> <arr name="wkt_field_geometry"> <str>POINT(3.463333 0.901389)</str> </arr> <str name="bundle_name">mine</str> <str name="id">m-301</str> <str name="label">MI2</str> <arr name="sm_field_country_code"> <str>FR</str> </arr> <str name="bundle">data</str> <arr name="sm_field_country_name"> <str>France</str> </arr> <arr name="sm_field_miname"> <str>985</str> <str>Ag</str> </arr> <long name="_version_">1560122451930644480</long> <date name="timestamp">2017-02-23T11:18:32.855Z</date> </doc> </result> <str name="nextCursorMark">AoElbS0zMDE=</str> </response> using OCQL, with different values raised an exception : java.lang.RuntimeException: Error applying mapping with targetAttribute gml:name Caused by: java.lang.IllegalArgumentException: Could not find working property accessor for attribute (label) in object (SimpleFeatureImpl:m4eu=[]) at org.geotools.filter.AttributeExpressionImpl.evaluate(AttributeExpressionImpl.java:229) But, maybe, my ocql value is wrong, as it's not the xml element to use, but the xmlattribute As the response is XML, I also tried to use data integration access, and setup inputAttribute with xpath. All values tested (str[@name='label'],...) return empty value without exception. Trying to use ALL log level, doesn't show anything helpful to me. 2017-07-03 13:48:02,525 TRACE [complex.filter] - ENTRY FeatureImpl:MineralOccurrenceView<MineralOccurrenceViewType id=m4eu.m-301>=[] gml:name null null null 2017-07-03 13:48:02,528 DEBUG [geotools.xml] - AbstractFeature is abstract What should I use to map theses fields ? Thanks Kind regards, Adrien. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Application-schema-plugin-and-filter-encoding-performance-concern-tp5325806p5326505.html Sent from the GeoServer - User mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users