David Overton 346804fc67 Support nested object fields in DC API and use this to implement nest… ... ## Description This change adds support for nested object fields in HGE IR and Schema Cache, the Data Connectors backend and API, and the MongoDB agent. ### Data Connector API changes - The `/schema` endpoint response now includes an optional set of GraphQL type definitions. Table column types can refer to these definitions by name. - Queries can now include a new field type `object` which contains a column name and a nested query. This allows querying into a nested object within a field. ### MongoDB agent changes - Add support for querying into nested documents using the new `object` field type. ### HGE changes - The `Backend` type class has a new type family `XNestedObjects b` which controls whether or not a backend supports querying into nested objects. This is currently enabled only for the `DataConnector` backend. - For backends that support nested objects, the `FieldInfo` type gets a new constructor `FINestedObject`, and the `AnnFieldG` type gets a new constructor `AFNestedObject`. - If the DC `/schema` endpoint returns any custom GraphQL type definitions they are stored in the `TableInfo` for each table in the source. - During schema cache building, the function `addNonColumnFields` will check whether any column types match custom GraphQL object types stored in the `TableInfo`. If so, they are converted into `FINestedObject` instead of `FIColumn` in the `FieldInfoMap`. - When building the `FieldParser`s from `FieldInfo` (function `fieldSelection`) any `FINestedObject` fields are converted into nested object parsers returning `AFNestedObject`. - The `DataConnector` query planner converts `AFNestedObject` fields into `object` field types in the query sent to the agent. ## Limitations ### HGE not yet implemented: - Support for nested arrays - Support for nested objects/arrays in mutations - Support for nested objects/arrays in order-by - Support for filters (`where`) in nested objects/arrays - Support for adding custom GraphQL types via track table metadata API - Support for interface and union types - Tests for nested objects ### Mongo agent not yet implemented: - Generate nested object types from validation schema - Support for aggregates - Support for order-by - Configure agent port - Build agent in CI - Agent tests for nested objects and MongoDB agent PR-URL: https://github.com/hasura/graphql-engine-mono/pull/7844 GitOrigin-RevId: aec9ec1e4216293286a68f9b1af6f3f5317db423		2023-04-11 01:30:37 +00:00
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aeson-ordered	Fix all warnings in internal libraries and enable -WError everywhere	2023-02-01 23:32:19 +00:00
api-tests	chore(server): variable renaming around custom return type permissions	2023-04-10 14:17:20 +00:00
arrows-extra	CI: Get the GHC version from VERSIONS.json for all GitHub workflows.	2023-03-27 18:53:18 +00:00
dc-api	Support nested object fields in DC API and use this to implement nest…	2023-04-11 01:30:37 +00:00
error-message	[ci] test the libraries in server/lib	2023-02-02 17:32:48 +00:00
graphql-parser	CI: Get the GHC version from VERSIONS.json for all GitHub workflows.	2023-03-27 18:53:18 +00:00
hasura-prelude	Add extremely basic support for BigQuery JSON fields	2023-04-04 09:45:17 +00:00
incremental	CI: Get the GHC version from VERSIONS.json for all GitHub workflows.	2023-03-27 18:53:18 +00:00
pg-client	validate logical models custom return type against postgres	2023-04-04 14:02:59 +00:00
resource-pool	[ci] test the libraries in server/lib	2023-02-02 17:32:48 +00:00
schema-parsers	server: fix some hspec tests	2023-02-03 14:09:19 +00:00
test-harness	Support nested object fields in DC API and use this to implement nest…	2023-04-11 01:30:37 +00:00