Instance http://localhost:8080/kbo/by-name?substring=& doesn't have a rdf:type tree:Node

[xdxxxdx]

That is very specific bug, only occurs to the tree:Node http://localhost:8080/kbo/by-name?substring=& for substring fragmentations. I think it is an error when processing “&”。 This issue doesn't occur to other fragmented pages: e,g.

• http://localhost:8080/kbo/by-name?substring=v
• http://localhost:8080/kbo/by-name?substring=c

Prerequitests:

• LDES Server version: ldes/ldes-server:1.1.0-SNAPSHOT
• LDES Server is up and running on the port 8080

Scenario:

1. Post KBO event stream configuration to the server endpoint by

    @prefix ldes: <https://w3id.org/ldes#> .  
    @prefix custom: <http://example.org/> .  
    @prefix dcterms: <http://purl.org/dc/terms/> .  
    @prefix tree: <https://w3id.org/tree#>.  
    @prefix sh: <http://www.w3.org/ns/shacl#> .  
    @prefix server: <http://localhost:8080/> .  
    @prefix xsd: <http://www.w3.org/2001/XMLSchema#> .  
    @prefix kbo: <http://localhost:8080/kbo/> .  
    @prefix legal: <http://www.w3.org/ns/legal#> .  
    @base <http://localhost:8080> .  

    server:kbo a ldes:EventStream ;  
    ldes:timestampPath dcterms:issued;  
    ldes:versionOfPath dcterms:isVersionOf ;  
    custom:memberType legal:legalEntity;  
    tree:shape kbo:shape .  

    kbo:shape a sh:NodeShape ;  
    sh:nodeShape [  
    sh:closed true ;  
    sh:propertyShape []  
    ] ;  
    sh:deactivated true .

2. Post the BEL 20 data to the LDES Server
3. Post substring fragmentation view by

    @prefix ldes: <https://w3id.org/ldes#> .  
    @prefix custom: <http://example.org/> .  
    @prefix dcterms: <http://purl.org/dc/terms/> .  
    @prefix tree: <https://w3id.org/tree#>.  
    @prefix sh: <http://www.w3.org/ns/shacl#> .  
    @prefix server: <http://localhost:8080/> .  
    @prefix xsd: <http://www.w3.org/2001/XMLSchema#> .  
    @prefix server: <http://localhost:8080/kbo/> .  
    @prefix legal: <http://www.w3.org/ns/legal#> .  
    @base <http://localhost:8080> .  

    </kbo/by-name> a tree:Node ;  
    tree:viewDescription [ a tree:ViewDescription ;  
    tree:fragmentationStrategy ([  
    a tree:SubstringFragmentation ;  
    tree:memberLimit "2"^^xsd:integer ;  
    tree:fragmentationPath legal:legalName ;  
    ]) ;  
    ] .

Current result Brower to http://localhost:8080/kbo/by-name?substring=&, there is no triples indicating the current node is a tree:Node. e,g,

"
<http://localhost:8080/kbo/by-name?substring=&>
        rdf:type        tree:Node ;
        terms:isPartOf  <http://localhost:8080/kbo> .
"

But for any other fragmented pages e.g. http://localhost:8080/kbo/by-name?substring=c. it has

"
<http://localhost:8080/kbo/by-name?substring=c>
        rdf:type        tree:Node ;
        terms:isPartOf  <http://localhost:8080/kbo> .
 "

According to the Tree Spec: https://treecg.github.io/specification/#traversing

A tree:Relation MUST have one tree:node object of the type tree:Node.

As In the page http://localhost:8080/kbo/by-name?substring= http://localhost:8080/kbo/by-name?substring=& is a tree:node of a tree:Relation

       tree:relation   [ rdf:type    tree:SubstringRelation ;
                              tree:node   <http://localhost:8080/kbo/by-name?substring=&> ;
                              tree:path   legal:legalName ;
                              tree:value  "&"
                            ] ;

There should be

"
<http://localhost:8080/kbo/by-name?substring=&>
        rdf:type        tree:Node ;
        terms:isPartOf  <http://localhost:8080/kbo> .
"

In the whole RDF graph. The turtle file with what is in the content when pinging http://localhost:8080/kbo/by-name?substring=& substring_&.zip

[Yalz]

Hi @xdxxxdx ,

Could you provide a total data dump from your mongo? (Through whatever medium possible) The issue seems to come from not escaping sensitive HTML characters. We'll investigate

[xdxxxdx]

Hello @Yalz , here is the full data dump :) mongo_dump_776.zip

[pj-cegeka]

This issue has been fixed. The problem was not escaping sensitive HTML characters in the url of fragments. These characters in the urls are now encoded.

[xdxxxdx]

Hello @WLefever-Cegeka @pj-cegeka , This issue occurs again on the version: ldes/ldes-server:1.4.0-SNAPSHOT The turtle file with what is in the content when pinging http://localhost:8080/kbo/by-name?substring=& substringbug.zip

Same issue occurs on : 2.0.0-SNAPSHOT Thanks

[pj-cegeka]

Substring fragmentation has been deprecated so this issue with escaping sensitive HTML characters in the url of fragments can't happen anymore.

[xdxxxdx]

A great done