LorenzBuehmann commented on issue #1259:
URL: https://github.com/apache/jena/issues/1259#issuecomment-1103846006
@afs a follow up issue/question (we could also open another issue for better
reference)
Wikidata people argued to use POST form because it works ...
We tried to set the `SERVICE` request mode via Fuseki assembler config:
```
ja:context [ ja:cxtName "arq:httpServiceSendMode" ; ja:cxtValue
"asGetWithLimitForm" ] ;
```
This indeed fails, as `Context::get` tries to return an object of the
expected type in `Service::chooseQuerySendMode` method which in that case will
be `QuerySendMode` and indeed casting a `String` to this type fails.
A quick fix would workaround the limitation and handle at least the two
different types of the context value, i.e. i) `String` coming from an assembler
config or ii) a `QuerySendMode` coming from maybe some Java API setup :
```java
private static QuerySendMode chooseQuerySendMode(String serviceURL, Context
context, QuerySendMode dftValue) {
if ( context == null )
return dftValue;
Object querySendMode = context.<Object>get(httpServiceSendMode,
dftValue);
if (querySendMode instanceof String) { // handle string type from
assembler config
return QuerySendMode.valueOf((String) querySendMode);
} else if (querySendMode instanceof QuerySendMode) { // handle enum
type from Java API
return (QuerySendMode) querySendMode;
}
// handle null value and other non-supported types
return context.get(httpServiceSendMode, dftValue);
}
```
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