Hi all.

Looking further I found the UpdateProcessorBase and wrote the following
wrapper;

context = ARQ.getContext().copy();
put(u4EndpointIDSymbol, endpointGetID());
uProc = new UpdateProcessorBase(updateRequest,
GraphStoreFactory.create(graphDataset), context, updateEngineFactory);
execute();

Which is basically what private static UpdateProcessor make(UpdateRequest
updateRequest, GraphStore graphStore, Binding initialBinding, Context
context) does.

I still create my custom UpdateEngineFactory but I don't register it with
UpdateEngineRegistry.get().add(updateEngineFactory);

Anyone see any issues with this?

Dick.


On 22 November 2012 14:16, Dick Murray <[email protected]> wrote:

> Hi all.
>
> I need the UpdateEngineFactory accept(..) to query a user defined value in
> the passed Context or is there a way that I can get a user defined Symbol
> into the Context at the point I submit an UpdateAction?
>
> The UpdateEngineFactory accept(..) is triggered via a call to
> UpdateAction.execute(..).
>
> Prior to this call I need to put a Symbol into the context for the
> accept(..) to retrieve.
>
> But I cannot see how to achieve this.
>
> Looking at the Jena code.
>
> UpdateAction.execute(..) calls
>
> UpdateAction.execute$(..) calls
>
> UpdateExecutionFactory.create(..) calls with Context parameter as null
>
> UpdateExecutionFactory.make(..)
>
> make(..) is private. and according to the Eclipse call hierachy make(..)
> is only called by create(..) which means the Context always ends up being a
> copy of ARQ.getContext() because the first lines of make(..) code are...
>
>         if ( context == null )
>             context = ARQ.getContext().copy();
>
> I've looked at
> http://jena.apache.org/documentation/javadoc/arq/com/hp/hpl/jena/sparql/util/class-use/Context.htmlbut
>  nothing obvious springs out...
>
> Regards Dick.
>

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