{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://api.osohq.com/schemas/Query.json",
  "title": "Query",
  "description": "A generic query comprising 1+ predicates conjuncted together.",
  "type": "object",
  "required": [
    "calls",
    "constraints",
    "context_facts",
    "predicate"
  ],
  "properties": {
    "predicate": {
      "description": "Predicate name and variable names.\n\nINVARIANT: all variable names must exist in `constraints`. This ensures that all variables at least have a type.",
      "type": "array",
      "items": [
        {
          "type": "string"
        },
        {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      ],
      "maxItems": 2,
      "minItems": 2
    },
    "calls": {
      "description": "Predicate name and variable names.\n\nINVARIANT: all variable names must exist in `constraints`. This ensures that all variables at least have a type.",
      "type": "array",
      "items": {
        "type": "array",
        "items": [
          {
            "type": "string"
          },
          {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        ],
        "maxItems": 2,
        "minItems": 2
      }
    },
    "constraints": {
      "description": "Map of variable names to their type and value(s). Every variable is at least typed and may also be constrained to a set of values.",
      "type": "object",
      "additionalProperties": {
        "$ref": "#/components/schemas/Constraint"
      }
    },
    "context_facts": {
      "type": "array",
      "items": {
        "$ref": "#/components/schemas/ConcreteFact"
      }
    }
  }
}