versioned_docs/version-0.6.0-incubating/open-api/expression.yaml

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

---

components:
  schemas:
    FunctionArg:
      oneOf:
        - $ref: "#/components/schemas/Literal"
        - $ref: "#/components/schemas/Field"
        - $ref: "#/components/schemas/Function"
      discriminator:
        propertyName: type
        mapping:
          literal: "#/components/schemas/Literal"
          field: "#/components/schemas/Field"
          function: "#/components/schemas/Function"

    Literal:
      type: object
      required:
        - dataType
        - value
      properties:
        type:
          type: string
          enum:
            - "literal"
        dataType:
          $ref: "./datatype.yaml#/components/schemas/DataType"
        value:
          type: string
          description: The string format of the literal value

    Field:
      type: object
      required:
        - type
        - fieldName
      properties:
        type:
          type: string
          enum:
            - "field"
        fieldName:
          $ref: "./tables.yaml#/components/schemas/FieldName"

    Function:
      type: object
      required:
        - type
        - funcName
        - funcArgs
      properties:
        type:
          type: string
          enum:
            - "function"
        funcName:
          type: string
          description: The name of the function
        funcArgs:
          type: array
          description: The arguments of the function
          items:
            $ref: "#/components/schemas/FunctionArg"