Sample config, API backend generation

api_generation.yaml

!import "common.groovy"
!import "springboot.groovy"
!import "postgres.groovy"

!merge "moreConfig.yaml" #!dominant
!merge "otherConfig.yaml" #!submissive

springboot:
  - db: "postgres"

postgres:
  - production:
    - host: "database.example.com"
    - username: "username"
    - password: "password"

  - staging:
    - host: "stagingdb.example.org"
    - username: "staging"
    - password: "changeme"

  - development:
    - default: true
    - host: "localhost"
    - username: "clientdatabase"
    - password: "test"

api:
  - name: "ClientDatabase"
  - type: "springboot"
  - entities:
    - client:
      - id: "PK,AI"

      - name:
        - type: "string"
        - length: 128

      - wealth:
        - type: "long"

      - households:
        - relation: "multi household"

      - related:
        - relation: "multi client"

    - household:
      - id: "PK,AI"

      - address:
        - type: "string"
        - length: 256

  - endpoints:
    - "household/calculate_price": ´sum(household.getClients()*.getWealth()) * 0.15´

The idea is that the entities will be generated as Java Spring beans the database and everything will be set up automagically.
The generates source from this should be accessable in class_path and overrides,additions,etc to the api can be made with regular java code.

Could be a good idea to have a cli tool for this to, so that you can with that generate single or complete sets of overriding classes generated from this configuration.

I think it might also be a cool idea to use Java 8 Streams for adding functionality to the generated api. Maybe even using streams to override etc.