This also works:
URI uri = new URI("http://mysite.net";);
System.out.println(uri.resolve("/picture.jpg"));
but if no trailing "/" and no leading "/" on path will yield the
concatenated http://mysite.netpicture.jpg which then gets tossed and a
blank node is formed.
Should URI.resolve assume a "/" if no trailing nor leading "/" is present?
- Erich
On Wed, Mar 4, 2020 at 10:52 AM Erich Bremer <er...@ebremer.com> wrote:
> The program works if I specify the base with a trailing slash as "
> http://mysite.net/";
> I ran through the code and the problem appears to be here:
>
> https://github.com/jsonld-java/jsonld-java/blob/66012db2f53b009cedeae50c83b5594b9dd05e11/core/src/main/java/com/github/jsonldjava/utils/JsonLdUrl.java#L283
>
> In the short code segment here, you can see:
> URI uri = new URI("http://mysite.net";);
> System.out.println(uri.resolve("picture.jpg"));
>
> Output:
> http://mysite.netpicture.jpg
>
>
> On Wed, Mar 4, 2020 at 10:05 AM Erich Bremer <er...@ebremer.com> wrote:
>
>> Same thing:
>> Source JSONLD
>> {
>> "@context": [
>> "http://schema.org";
>> ],
>> "@graph": [
>> {
>> "@type": "CreativeWork",
>> "@id": "picture.jpg"
>> },
>> {
>> "@id": "./",
>> "@type": "DataSet"
>> }
>> ]
>> }
>> AFTER loading ============================================================
>> Base : http://mysite.net
>> SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
>> SLF4J: Defaulting to no-operation (NOP) logger implementation
>> SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for
>> further details.
>> [ {
>> "@type" : [ "http://schema.org/CreativeWork"; ]
>> }, {
>> "@id" : "http://mysite.net";,
>> "@type" : [ "http://schema.org/DataSet"; ]
>> } ]
>>
>>
>> CODE ====================================
>> package com.mycompany.tesjsonld;
>>
>> import com.github.jsonldjava.core.JsonLdOptions;
>> import com.github.jsonldjava.core.JsonLdProcessor;
>> import com.github.jsonldjava.utils.JsonUtils;
>> import java.io.ByteArrayInputStream;
>> import java.io.FileNotFoundException;
>> import java.io.IOException;
>> import java.io.InputStream;
>> import java.nio.charset.Charset;
>>
>> /**
>> *
>> * @author erich
>> */
>> public class tryme {
>>
>> public static void main(String[] args) throws FileNotFoundException,
>> IOException {
>> String json = "{\n" +
>> " \"@context\": [\n" +
>> " \"http://schema.org\"\n"; +
>> " ],\n" +
>> " \"@graph\": [\n" +
>> " {\n" +
>> " \"@type\": \"CreativeWork\",\n" +
>> " \"@id\": \"picture.jpg\"\n" +
>> " },\n" +
>> " {\n" +
>> " \"@id\": \"./\",\n" +
>> " \"@type\": \"DataSet\"\n" +
>> " }\n" +
>> " ]\n" +
>> "}";
>>
>> System.out.println(json);
>>
>> System.out.println("============================================================");
>> InputStream inputStream = new
>> ByteArrayInputStream(json.getBytes(Charset.forName("UTF-8")));
>> Object jsonObject = JsonUtils.fromInputStream(inputStream);
>> JsonLdOptions options = new JsonLdOptions("http://mysite.net";);
>> System.out.println("Base : "+options.getBase());
>> //Object compact = JsonLdProcessor.compact(jsonObject, null,
>> options);
>> Object compact = JsonLdProcessor.expand(jsonObject, options);
>> System.out.println(JsonUtils.toPrettyString(compact));
>> }
>> }
>>
>> On Wed, Mar 4, 2020 at 9:44 AM Erich Bremer <er...@ebremer.com> wrote:
>>
>>> I will try with the other library to check.
>>>
>>> On Wed, Mar 4, 2020 at 4:29 AM Rob Vesse <rve...@dotnetrdf.org> wrote:
>>>
>>>> This may be an upstream bug or it could be a bug in how we configure
>>>> the underlying parser
>>>>
>>>> Jena's JSON-LD support is based upon the
>>>> https://github.com/jsonld-java/jsonld-java library so you could try
>>>> and reproduce your test case just using their library directly which would
>>>> determine if it is their bug or our bug
>>>>
>>>> Rob
>>>>
>>>> On 04/03/2020, 00:11, "Erich Bremer" <er...@ebremer.com> wrote:
>>>>
>>>> I'm trying to use a "@id": "./" in a jsonld file and in another
>>>> triple
>>>> "@id": "picture.jpg". The "./" will be correctly changed to the
>>>> base URL,
>>>> but the "@id": "picture.jpg" just gets dropped and a blank node is
>>>> created. Below is the code segment that I used to generate this
>>>> output:
>>>> {
>>>> "@context": [
>>>> "http://schema.org";
>>>> ],
>>>> "@graph": [
>>>> {
>>>> "@type": "CreativeWork",
>>>> "@id": "picture.jpg"
>>>> },
>>>> {
>>>> "@id": "./",
>>>> "@type": "DataSet"
>>>> }
>>>> ]
>>>> }
>>>> _:Bd42dbcf4e4ffb76e199766bf5e4c1e4b <
>>>> http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <
>>>> http://schema.org/CreativeWork> .
>>>> <http://mydomain.com> <
>>>> http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <
>>>> http://schema.org/DataSet> .
>>>>
>>>> If I use https://json-ld.org/playground/ on the same jsonld, I get:
>>>>
>>>> <https://json-ld.org/playground/> <
>>>> http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <
>>>> http://schema.org/DataSet>
>>>> .
>>>> <https://json-ld.org/playground/picture.jpg> <
>>>> http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <
>>>> http://schema.org/CreativeWork> .
>>>>
>>>> which is what I expected. Am I missing something here? - Erich
>>>>
>>>> String json = "{\n" +
>>>> " \"@context\": [\n" +
>>>> " \"http://schema.org\"\n"; +
>>>> " ],\n" +
>>>> " \"@graph\": [\n" +
>>>> " {\n" +
>>>> " \"@type\": \"CreativeWork\",\n" +
>>>> " \"@id\": \"picture.jpg\"\n" +
>>>> " },\n" +
>>>> " {\n" +
>>>> " \"@id\": \"./\",\n" +
>>>> " \"@type\": \"DataSet\"\n" +
>>>> " }\n" +
>>>> " ]\n" +
>>>> "}";
>>>> System.out.println(json);
>>>> Model m = ModelFactory.createDefaultModel();
>>>> InputStream inputStream = new
>>>> ByteArrayInputStream(json.getBytes(Charset.forName("UTF-8")));
>>>> RDFParser.create()
>>>> .base("http://mydomain.com";)
>>>> .source(inputStream)
>>>> .lang(RDFLanguages.JSONLD)
>>>> .parse(m);
>>>> RDFDataMgr.write(System.out, m, RDFFormat.NQUADS) ;
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
