Query attribute/binding

MerrionComputing / EventsSourcing-on-Azure-Functions

A library to demonstrate doing Event Sourcing as a data persistence mechanism for Azure Functions

MIT License

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Query attribute/binding #23

Open MerrionComputing opened 4 years ago

MerrionComputing commented 4 years ago

Need to have a Query class which can be bound to a parameter on an Azure function with autoresolve properties for query name and unique identifier.

if the unique identifier is not set, use a GUID

This will create an event stream to use to orchestrate execution of the step(s) required to process the query.

MerrionComputing commented 4 years ago

Needs to be on a per Domain basis.

MerrionComputing commented 4 years ago

The main events / steps of processing a query would be:-

Query created
Parameter set
Validations
Classifications requested
Projections requested
Collations
Response

MerrionComputing commented 4 years ago

Classifications needed:-

Completed (this allows completed queries to be archives to other storage, for example)

Projections needed:-

Output targets (as this may be changed while a query is running)

MerrionComputing commented 3 years ago

Query functions

GetQueryState - Get the state of the given query instance
CompareQueries - Compare the outcome of two query instances (for "what has changed" analysis)