A problem with visualising a referenced node

[Ansa211]

this query has been obtained by the "Suggest" function; it runs correctly, but when I click node $b in the list of nodes, it gives me an error saying Error while loading tree. INTERNAL SERVER ERROR: Did not find type '!/t-node/coref_text'

[matyaskopp]

problem is on server side:

curl 'http://lindat.mff.cuni.cz/services/pmltq/api/treebanks/30/query' -H 'Origin: http://lindat.mff.cuni.cz' -H 'Accept-Encoding: gzip, deflate' -H 'Accept-Language: en-US,en;q=0.8,cs;q=0.6,hu;q=0.4' -H 'Content-Type: application/json;charset=UTF-8' -H 'Accept: application/json, text/plain, */*' -H 'Referer: http://lindat.mff.cuni.cz/services/pmltq/'  -H 'Connection: keep-alive' -H 'DNT: 1' --data-binary '{"filter":true,"limit":"2","query":"t-node $a :=  [\n  member coref_text [\n    target_node.rf $b,\n  ],\n];\nt-node $b :=  [ \n]","timeout":"30","queryRecordId":null}' --compressed

returns this json:

{
    "nodes":[
        [
            "a",
            "t-node"
        ],
        [
            "b",
            "t-node"
        ]
    ],
    "results":[
        [
            "113\/t-node@t-cmpr9410-009-p8s1w7",
            "403\/\/t-node\/coref_text",
            "85\/t-node@t-cmpr9410-009-p7s3w7"
        ],
        [
            "122\/t-node@t-cmpr9410-009-p8s1w16",
            "432\/\/t-node\/coref_text",
            "113\/t-node@t-cmpr9410-009-p8s1w7"
        ]
    ]
}

it should not return 403\/\/t-node\/coref_text in results

[matyaskopp]

when I change query order (link) it works but removing $b variable does not (link)

I am not able to create this query with suggest. I am able to create this one, that produces this error:

Could not determine node type of node in the target_node.rf relation to node coref_text:target_node.rf [  ]
Possible types are:  !

[Ansa211]

How to "Suggest" the query: run the corrected query, go to second tree, select both $a and $b, then run "Suggest".

[matyaskopp]

I have found simpler query:

t-node $a :=  [
  member coref_text [
    target_node.rf t-node [],
  ],
];

Problem is in member selector - it looks like a node but it does not have an address is only virtual node. Since that every query that contains nested selector in member causes this error.

[matyaskopp]

TODO: investigate where it should be fixed

• server side (there might be problem with TrEd's remote evaluation)
• web interface (is it the only place where bug appear? CLI?)