Github user afs commented on a diff in the pull request:
https://github.com/apache/jena/pull/415#discussion_r186377839
--- Diff:
jena-arq/src/main/java/org/apache/jena/sparql/engine/http/QueryEngineHTTP.java
---
@@ -538,13 +539,29 @@ else if (
actualContentType.equals(WebContent.contentTypeJSON))
@Override
public JsonArray execJson()
{
- throw new NotImplemented("JSON queries not implemented for remote
calls") ;
+ checkNotClosed();
+ HttpQuery httpQuery = makeHttpQuery();
+ httpQuery.setAccept(WebContent.contentTypeJSON);
+ InputStream in = httpQuery.exec();
+ JsonValue v = JSON.parseAny(in);
+ if ( ! v.isArray() )
+ {}
+ return v.getAsArray();
}
@Override
public Iterator<JsonObject> execJsonItems()
{
- throw new NotImplemented("JSON queries not implemented for remote
calls") ;
+ // Non-streaming.
+ // TODO Integrate with the JSON parser to stream the results.
+ JsonArray array = execJson().getAsArray();
+ List<JsonObject> x = new ArrayList<>(array.size());
+ array.forEach(elt->{
+ if ( ! elt.isObject())
--- End diff --
They are checking expectations to be defensive against misbehaving remote
servers. Otherwise the app will get a less helpful exception on the attempt
cast performed by `getAsArray` or `getAsObject`.
---
