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Error [... is not a literal node]: Modyfing artifact properties when artifact has "link to"


Philipp Thomann (111) | asked Aug 09 '21, 10:42 a.m.
edited Aug 09 '21, 1:44 p.m.
Hello Community, I have following Issue:


Problem description
I am able to modify the the attributes of an artifact without any issues as long as the attribute hasn't any link to a requirement. When the attribute has a link to an requirement following error occurs:

I linked the Evidence --> a requirement.
Used Programming language: C# VS
API: OSLC-Core-Version=2.0

Code

//Request: Get Artifact

                    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(milestones.EvidenceResource);
                    request = createRequest(request, context);
                    IWebProxy proxy = WebRequest.DefaultWebProxy;
                    // Uri proxyUri = proxy.GetProxy(request.RequestUri);
                    bool isBypassed = proxy.IsBypassed(request.RequestUri);
                    if (!isBypassed)
                        proxy.Credentials = context.ProxyCredential;
                    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                    var reader = new StreamReader(response.GetResponseStream());
                    var etag = response.Headers.Get("ETag");
                    var Replace = reader.ReadToEnd();

**Response I get [WHEN Artefact has a link to a requirement:]
[Received Body --> and I send the same body PUT without any modification]

<rdf:RDF

    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"

    xmlns:acp="http://jazz.net/ns/acp#"

    xmlns:public_rm_10="http://www.ibm.com/xmlns/rm/public/1.0/"

    xmlns:calm="http://jazz.net/xmlns/prod/jazz/calm/1.0/"

    xmlns:jazz_rm="http://jazz.net/ns/rm#"

    xmlns:rm_property="https://jazz.XXX.com/rm/types/"

    xmlns:acc="http://open-services.net/ns/core/acc#"

    xmlns:process="http://jazz.net/ns/process#"

    xmlns:dcterms="http://purl.org/dc/terms/"

    xmlns:dc="http://purl.org/dc/elements/1.1/"

    xmlns:oslc="http://open-services.net/ns/core#"

    xmlns:nav="http://jazz.net/ns/rm/navigation#"

    xmlns:oslc_config="http://open-services.net/ns/config#"

    xmlns:oslc_rm="http://open-services.net/ns/rm#"

    xmlns:dng_task="http://jazz.net/ns/rm/dng/task#"

    xmlns:rm="http://www.ibm.com/xmlns/rdm/rdf/"

    xmlns:oslc_auto="http://open-services.net/ns/auto#" > 

  <rdf:Description rdf:nodeID="A0">

    <rdf:subject rdf:resource="https://jazz.XXX.com/rm/resources/MD_lqu3QY14EeucUNeS-GXy8w"/>

    <rdf:predicate rdf:resource="https://jazz.XXX.com/rm/types/LT_4_CfI_XnEeumDc79C12NdA"/>

    <rdf:object rdf:resource="https://jazz.XXX.com/rm/resources/TX_CVfu-lDmEeuWbbdnw2HZow"/>

    <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement"/>

    <dcterms:title>1228377</dcterms:title>

  </rdf:Description>

  <rdf:Description rdf:about="https://jazz.XXX.com/rm/resources/MD_lqu3QY14EeucUNeS-GXy8w">

    <oslc_config:component rdf:resource="https://jazz.XXX.com/rm/cm/component/V1TCoPQ4Eequ_bWtpv6_DQ"/>

    <dcterms:created rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-03-25T14:44:22.836Z</dcterms:created>

    <rm_property:AD_cWfn1m-UEeuSlb86Gyd1dg rdf:resource="https://jazz.XXX.com/rm/types/AT_XItUWW-UEeuSlb86Gyd1dg#_dvQgOb1pGAq2_cUQUlcMmg"/>

    <dcterms:contributor rdf:resource="https://jazz.XXX.com/jts/users/thophi"/>

    <process:projectArea rdf:resource="https://jazz.XXX.com/rm/process/project-areas/_VmiN4PQ4Eequ_bWtpv6_DQ"/>

    <rm_property:AD_vUgxAG-UEeuSlb86Gyd1dg rdf:datatype="http://www.w3.org/2001/XMLSchema#string">XX_4235676</rm_property:AD_vUgxAG-UEeuSlb86Gyd1dg>

    <dcterms:identifier rdf:datatype="http://www.w3.org/2001/XMLSchema#string">1283914</dcterms:identifier>

    <rm_property:AD_ffc7oJ3dEeuPP9F2fpUvLw rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Antenne Position</rm_property:AD_ffc7oJ3dEeuPP9F2fpUvLw>

    <oslc:instanceShape rdf:resource="https://jazz.XXX.com/rm/types/OT_kXZjO2-UEeuSlb86Gyd1dg"/>

    <rdf:type rdf:resource="http://open-services.net/ns/rm#RequirementCollection"/>

    <acp:accessControl rdf:resource="https://jazz.XXX.com/rm/accessControl/_VmiN4PQ4Eequ_bWtpv6_DQ"/>

    <rm_property:AD_IR_i041QEeucUNeS-GXy8w rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2021-02-26</rm_property:AD_IR_i041QEeucUNeS-GXy8w>

    <dcterms:description rdf:parseType="Literal"></dcterms:description>

    <nav:parent rdf:resource="https://jazz.XXX.com/rm/folders/FR_7b-SEm-UEeuSlb86Gyd1dg"/>

    <dcterms:title rdf:parseType="Literal">Req4</dcterms:title>

    <dcterms:modified rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-08-06T10:26:42.826Z</dcterms:modified>

    <rdf:type rdf:resource="http://jazz.net/ns/rm#Module"/>

    <dcterms:creator rdf:resource="https://jazz.XXX.com/jts/users/thophi"/>

    <oslc:serviceProvider rdf:resource="https://jazz.XXX.com/rm/oslc_rm/_VmiN4PQ4Eequ_bWtpv6_DQ/services.xml"/>

    <rm_property:AD_I12-IIM6EeuSlb86Gyd1dg rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Freigegeben</rm_property:AD_I12-IIM6EeuSlb86Gyd1dg>

    <rm_property:LT_4_CfI_XnEeumDc79C12NdA rdf:resource="https://jazz.XXX.com/rm/resources/TX_CVfu-lDmEeuWbbdnw2HZow"/>

    <rm_property:AD_3SNIoIi0EeucUNeS-GXy8w rdf:datatype="http://www.w3.org/2001/XMLSchema#string"></rm_property:AD_3SNIoIi0EeucUNeS-GXy8w>

  </rdf:Description>

</rdf:RDF>

 

  
//Request PUT Arrtifact   [In between I usually do some Meta data manipulation, for debugging reasons I left this part complet out. and send exactly the same body back as i receive:  ]


request = (HttpWebRequest)WebRequest.Create(milestones.EvidenceResource);
                    request.Headers.Add("If-Match", etag);
                    request = createRequest(request, context);
                    request.Method = "PUT";
                    using (var requestStream = request.GetRequestStream())
                    {
                        using (var streamWriter = new StreamWriter(requestStream))
                        { streamWriter.Write(Replace); }
                    }

                    var response_ = request.GetResponse();
                    var responseStream = response_.GetResponseStream();
                    var streamReader = new StreamReader(responseStream);
                    var data = streamReader.ReadToEnd();


Error Message:

<rdf:RDF
  <rdf:Description>
    <err:detailedMessage rdf:datatype="http://www.w3.org/2001/XMLSchema#string"
    <err:errorMessage rdf:datatype="http://www.w3.org/2001/XMLSchema#string"
    >Falsche Anforderung</err:errorMessage>
    <err:errorStatus rdf:datatype="http://www.w3.org/2001/XMLSchema#long"
    >400</err:errorStatus>
  </rdf:Description>
</rdf:RDF>

--> System.Net.WebException: 'The remote server has returned an error: (400) Invalid request.'

Many thanks for any input/suggestion/hint
//Philipp

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