supergraph | GraphQL Server Framework implemented as Express middlewares | GraphQL library
kandi X-RAY | supergraph Summary
kandi X-RAY | supergraph Summary
SuperGraph is a GraphQL Server Framework. It is inspired by Koa, built on Apollo Server, and turns your GraphQL endpoint into a Koa-like application, with support for context, middleware, and many other features. It is great for setting up an API Gateway on top of existing GraphQL endpoint, applying concepts like remote schemas and schema stitching. But it also makes it very easy to set up a GraphQL Server from scratch.
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QUESTION
I'm using graphql-shield
to protect a subgraph
.
ANSWER
Answered 2021-Oct-16 at 09:40I was able to resolve this issue by changing the scope of my authentication.
Instead of authenticating all "*"
QUESTION
I'm trying to find a way to encode a sort of basic subgraph isomorphism in Z3 (preferably z3py). While I know there are papers on this in the abstract, finding any mechanism to do it has eluded me even for very trivial cases, because I'm very new to Z3 in general!
Suppose you have just about the most basic subgraph with nodes (0,1,2) and edges (0,1) with node 2 off on its own, and the supergraph has nodes (0,1,2) and edges (1,2) with node 0 off on its own. You could map the nodes of the subgraph into the supergraph with
...ANSWER
Answered 2021-May-12 at 16:49It is relatively straightforward to encode subgraph isomorphism in z3, pretty much along the lines of how you described. However, this encoding is unlikely to scale to large graphs. As you no doubt know, subgraph isomorphism is NP-complete in general, and this encoding will cause z3 to simply enumerate all possibilities and thus will blow up exponentially.
Having said that, here's a straightforward encoding:
QUESTION
My formula looks like that:
...ANSWER
Answered 2020-Aug-28 at 08:41You can use the INDIRECT formula in your OFFSET formula to achieve this like below:
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