Filters

[Romathonat]

Could you provide concretes examples about filters ? I can't make a single one work.
For instance :
http://...?category=URL_ENCODE(http://example.org/occi#my_category)
With

curl -H 'Accept: application/json' -X GET http://localhost:8080?category=http%3A%2F%2Fschemas.ogf.org%2Focci%2Finfrastructure%23compute

or

curl -H 'Accept: application/json' -X GET http://localhost:8080/categories/compute?category=http%3A%2F%2Fschemas.ogf.org%2Focci%2Finfrastructure%23compute

I have this result :

Ranch listener http had connection process started with cowboy_protocol:start_link/4 at <0.258.0> exit with reason: {cowboy_handler,[{class,error},{reason,function_clause},{mfa,{erocci_http_handler,init,2}},{stacktrace,[{erocci_http_handler,'-parse_filters/1-fun-0-',[[{'=:=',scheme,<<"http://schemas.ogf.org/occi/infrastructure">>},{'=:=',term,<<"compute">>}],[]],[{file,"src/erocci_http_handler.erl"},{line,462}]},{lists,foldl,3,[{file,"lists.erl"},{line,1263}]},{erocci_http_handler,init_occi,2,[{file,"src/erocci_http_handler.erl"},{line,256}]},{cowboy_handler,execute,2,[{file,"src/cowboy_handler.erl"},{line,41}]},{cowboy_protocol,execute,4,[{file,"src/cowboy_protocol.erl"},{line,470}]}]},{req,[{socket,#Port<0.6523>},{transport,ranch_tcp},{connection,keepalive},{pid,<0.258.0>},{method,<<"GET">>},{version,'HTTP/1.1'},{peer,{{127,0,0,1},56898}},{host,<<"localhost">>},{host_info,undefined},{port,8080},{path,<<"/categories/compute">>},{path_info,undefined},{qs,<<"category=http%3A%2F%2Fschemas.ogf.org%2Focci%2Finfrastructure%23compute">>},{bindings,[]},{headers,[{<<"user-agent">>,<<"curl/7.35.0">>},{<<"host">>,<<"localhost:8080">>},{<<"accept">>,<<"application/json">>}]},{meta,[]},{body_state,waiting},{buffer,<<>>},{multipart,undefined},{resp_compress,true},{resp_state,waiting},{resp_headers,[]},{resp_body,<<>>},{onresponse,undefined}]},{opts,{kind,{kind,{<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},#{actions => #{{<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"restart">>} => {action,{<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"restart">>},#{attributes => #{<<"method">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"restart">>},default => undefined,description => <<>>,mutable => true,name => <<"method">>,pattern => undefined,required => false,title => <<>>,type => string}},category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},location => undefined,title => <<"Restart the system (graceful, warm or cold)">>}},{<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"start">>} => {action,{<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"start">>},#{attributes => #{},category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},location => undefined,title => <<"Start the system">>}},{<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"stop">>} => {action,{<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"stop">>},#{attributes => #{<<"method">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"stop">>},default => undefined,description => <<>>,mutable => true,name => <<"method">>,pattern => undefined,required => false,title => <<>>,type => string}},category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},location => undefined,title => <<"Stop the system (graceful, acpioff or poweroff)">>}},{<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"suspend">>} => {action,{<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"suspend">>},#{attributes => #{<<"method">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure/compute/action#">>,<<"suspend">>},default => undefined,description => <<>>,mutable => true,name => <<"method">>,pattern => undefined,required => false,title => <<>>,type => string}},category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},location => undefined,title => <<"Suspend the system (hibernate or in RAM)">>}}},attributes => #{<<"occi.compute.architecture">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},default => undefined,description => <<>>,mutable => true,name => <<"occi.compute.architecture">>,pattern => undefined,required => false,title => <<"CPU Architecture">>,type => {enum,[x64,x86]}},<<"occi.compute.cores">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},default => undefined,description => <<>>,mutable => true,name => <<"occi.compute.cores">>,pattern => undefined,required => false,title => <<"CPU cores number">>,type => integer},<<"occi.compute.hostname">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},default => undefined,description => <<>>,mutable => true,name => <<"occi.compute.hostname">>,pattern => undefined,required => false,title => <<"System hostname">>,type => string},<<"occi.compute.memory">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},default => undefined,description => <<>>,mutable => true,name => <<"occi.compute.memory">>,pattern => undefined,required => false,title => <<"System RAM (GB)">>,type => float},<<"occi.compute.speed">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},default => undefined,description => <<>>,mutable => true,name => <<"occi.compute.speed">>,pattern => undefined,required => false,title => <<"CPU speed (GHz)">>,type => float},<<"occi.compute.state">> => #{category => {<<"http://schemas.ogf.org/occi/infrastructure#">>,<<"compute">>},default => inactive,description => <<>>,mutable => false,name => <<"occi.compute.state">>,pattern => undefined,required => true,title => <<"System state">>,type => {enum,[error,suspended,inactive,active]}}},location => <<"/categories/compute">>,parents => [{<<"http://schemas.ogf.org/occi/core#">>,<<"resource">>},{<<"http://schemas.ogf.org/occi/core#">>,<<"entity">>}],title => <<"Compute Resource">>}}}}]}

The attribute filter, seemed to work, but give all results like there were no filter :

curl -H 'Accept: application/json' -X GET http://localhost:8080/categories/compute?q=occi.core.id%3D6df690d2-3158-40c4-88fb-d1c41584d6e4

Could you provide more explanations about /prefix/path, please?

Paging is working fine.
The output of this issue could be some documentation.