operationalizing GraphQL queries

[AdrianP]

We're working to more formally adopt GraphQL as a way to consume data from EDG for various integration reasons.

I see a way in the GraphiQL UI to save a named query but is there a way to call saved queries by name? And pass in parameters?

When I look 'under the hood' (using the browser's dev tools) at the request that is being made when I execute a saved query it is just running the query itself. This has disadvantages, like having to spread the query across multiple consuming clients such that if something changes the updates need to happen in multiple places. Making a single change to the saved query that is being called by name by the consuming clients is preferred (assuming the contract isn't changing in a breaking way).

This is a similar paradigm to a stored proc in the relational database world.

An added nice feature would be the ability to automate deployments of saved queries.  Is that possible?

thx...
Adrian Pfisterer.

[Holger Knublauch]

Hi Adrian,

the GraphQL servlet itself doesn't have a way to invoke saved queries instead. So you could potentially develop your own way of managing/storing/sharing your queries either in EDG itself (e.g. in some Data Graph) or store them outside in your client applications.

If you want to "hide" the details of GraphQL queries, you could turn them into ADS JavaScript and wrap those scripts into web services. ADS includes a function graph.ql() that can be used to invoke a GraphQL query including parameter passing:

graph.ql(`{ cities { uri } }`)

To define web services in ADS, see https://www.topquadrant.com/doc/7.2/ext/points.html#ext-services-ads

Such web services could, of course, also query the available GraphQL queries from a graph, including the TCH graphs where the current instances of <http://teamwork.topbraidlive.org/graphql.search#rawGQLQuery> are stored when you press the save query button.

Maybe this gives you some ideas?

Holger

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[AdrianP]

Thanks, Holger.  Yes, this gives me some ideas.  I think I can get where I need to go.

Adrian.