On 2022-05-09 5:21 pm, Rob Atkinson wrote:
OK - am on 7.2
I see how that works - for a static function.
If I have a complex function I want to send parameters to, do I wrap
that target function in an anonymous function that passes the
parameters I want?
In JavaScript, inner functions can see the variables declared outside, e.g.
let x= 42;
graph.transaction('...', '...', () => {
owl.Thing.add(rdfs.seeAlso, x); // x is in scope
})
should work.
Holger
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*Rob Atkinson*
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On Mon, 9 May 2022 at 17:06, Holger Knublauch <[email protected]>
wrote:
Hi Rob,
you'll need 7.2 for this, using graph.transaction. Example:
let result =
graph.withDataGraph('http://uri.of.example.graph/toUpdate', 'Some
log message', () => {
owl.Thing.add(rdfs.comment, 'Added this comment');
return 'whatever';
});
This will switch to the first argument as the active graph for the
transaction. The second argument can be a log message for the
change history. The 3rd argument is the callback function which is
the body of the transaction. Here you have the new active graph
and can add or delete triples etc. You could also check
constraints and decide not to proceed by throwing an exception,
i.e. not committing the transaction.
Prior to 7.1 graph.withDataGraph *probably* worked somehow, but
that would be a hack and wouldn't properly support transactions etc.
Holger
On 2022-05-09 4:57 pm, Rob Atkinson wrote:
Hi
trying to find examples to understand options for inserting into
a named graph..
I have a situation where I need to process a graph and send data
to multiple related graphs
ADS offers me the "withDataGraph" that calls a function with no
parameters...
seems like it might be relevant to use that and update...
not sure how I invoke the function I want to call with the
parameters I need to send however?
I can force access to a sparql endpoint as in
https://www.topquadrant.com/doc/7.1/user_guide/working_with_asset_collections/using_sparql_to_query_and_modify_data.html?highlight=insert
might work if all my data is a simply query/insert - in a
parameterless function, but I would like to have the option of
manipulating data in ADS and potentially introducing external
lookup, validation after transformation and/or human review
activities.
I probably want to use transaction() eventually if I encounter
some error.
What is available -- or if not what approach fits into the EDG
architecture best?
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