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
..
Types	Custom update column operator support for Data Connectors [GDC-688]	2023-01-19 04:22:58 +00:00
API.hs	Support for using Data Connectors as the target of remote relationships	2023-03-07 01:33:26 +00:00
Backend.hs	Support nested object fields in DC API and use this to implement nest…	2023-04-11 01:30:37 +00:00
ConfigTransform.hs	Gardening: Code cleanup around config transformations for dataconnector backends	2023-01-11 23:13:26 +00:00
Execute.hs	feature(server): make execution statistics available through logging	2023-03-14 11:33:45 +00:00
Metadata.hs	Support nested object fields in DC API and use this to implement nest…	2023-04-11 01:30:37 +00:00
RunSQL.hs	Upgrade Ormolu to v0.5.	2022-11-02 20:55:13 +00:00
Schema.hs	Custom update column operator support for Data Connectors [GDC-688]	2023-01-19 04:22:58 +00:00
SchemaCache.hs	Define IR types for AggregationPredicates.	2022-08-19 15:41:47 +00:00
Transport.hs	[feature branch] EE Lite Trials	2023-04-05 08:59:09 +00:00
Types.hs	Enhance insert table schema with extra info and remove need for cached schema usage in Super Connector mutations	2023-04-05 02:23:20 +00:00