graphql-engine/dc-agents/sqlite/package.json
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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{
"name": "@hasura/dc-agent-sqlite",
"version": "0.1.0",
"description": "SQLite Data Connector Agent for Hasura GraphQL Engine",
"author": "Hasura (https://github.com/hasura/graphql-engine)",
"license": "Apache-2.0",
"repository": {
"type": "git",
"url": "git+https://github.com/hasura/graphql-engine.git"
},
"bugs": {
"url": "https://github.com/hasura/graphql-engine/issues"
},
"homepage": "https://github.com/hasura/graphql-engine#readme",
"main": "dist/index.js",
"scripts": {
"build": "tsc",
"typecheck": "tsc --noEmit",
"start": "ts-node ./src/index.ts",
"start-no-typecheck": "ts-node --transpileOnly ./src/index.ts",
"test": "echo \"Error: no test specified\" && exit 1"
},
"dependencies": {
"@fastify/cors": "^8.1.0",
"@hasura/dc-api-types": "0.30.0",
"fastify-metrics": "^9.2.1",
"fastify": "^4.13.0",
"nanoid": "^3.3.4",
"openapi3-ts": "^2.0.2",
"pino-pretty": "^8.1.0",
"sqlite-parser": "^1.0.1",
"sqlite3": "^5.1.4",
"sqlstring-sqlite": "^0.1.1"
},
"devDependencies": {
"@tsconfig/node16": "^1.0.3",
"@types/node": "^16.11.49",
"@types/sqlite3": "^3.1.8",
"@types/xml2js": "^0.4.11",
"ts-node": "^10.9.1",
"typescript": "^4.7.4"
}
}