{
  "$schema": "http://json-schema.org/schema#",
  "$id": "https://smart-data-models.github.io/data-models.OpenChannelManagement/OpenChannelJunction/schema.json",
  "$schemaVersion": "0.0.1",
  "modelTags": "FIWARE4WATER",
  "title": "Open Channel Management - OpenChannelJunction",
  "description": "This entity contains a harmonised description of a generic Junction made for Raw-Water (Open Channels) System Management domain. A Junction defines a location where the characteristics of the channel changes, two or more channels come together or split apart, amounts of water are abstracted or inserted to the system etc.",
  "type": "object",
  "allOf": [
    {
      "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/Location-Commons"
    },
    {
      "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/GSMA-Commons"
    },
    {
      "properties": {
        "type": {
          "type": "string",
          "enum": [
            "OpenChannelJunction"
          ],
          "description": "Property. NGSI Entity Type. it has to be OpenChannelJunction"
        },
        "position": {
          "type": "object",
          "description": "Property. Object providing information about the distance with the rest of the elements and a relationship with them.",
          "properties": {
            "distance": {
              "type": "number",
              "description": "Property. The distance between this Entity and a reference point (e.g., the most upstream point of the system). Units: 'Km'"
            },
            "refPoint": {
              "anyOf": [
                {
                  "type": "string",
                  "minLength": 1,
                  "maxLength": 256,
                  "pattern": "^[\\w\\-\\.\\{\\}\\$\\+\\*\\[\\]`|~^@!,:\\\\]+$",
                  "description": "Property. Identifier format of any NGSI entity."
                },
                {
                  "type": "string",
                  "format": "uri",
                  "description": "Property. Identifier format of any NGSI entity."
                }
              ],
              "description": "Relationship. The reference point distance is measured from."
            }
          }
        },
        "downstreamNode": {
          "anyOf": [
            {
              "type": "string",
              "minLength": 1,
              "maxLength": 256,
              "pattern": "^[\\w\\-\\.\\{\\}\\$\\+\\*\\[\\]`|~^@!,:\\\\]+$",
              "description": "Property. Identifier format of any NGSI entity"
            },
            {
              "type": "string",
              "format": "uri",
              "description": "Property. Identifier format of any NGSI entity"
            }
          ],
          "description": "Relationship. A relationship indicating the ID of the downstream node (e.g., Junction, Regulation Structure), where the channel ends."
        },
        "upstreamNode": {
          "anyOf": [
            {
              "type": "string",
              "minLength": 1,
              "maxLength": 256,
              "pattern": "^[\\w\\-\\.\\{\\}\\$\\+\\*\\[\\]`|~^@!,:\\\\]+$",
              "description": "Property. Identifier format of any NGSI entity"
            },
            {
              "type": "string",
              "format": "uri",
              "description": "Property. Identifier format of any NGSI entity"
            }
          ],
          "description": "Relationship. A relationship indicating the ID of the upstream node (e.g., Junction, Regulation Structure), where the channel begins."
        },
        "observedBy": {
          "anyOf": [
            {
              "type": "string",
              "minLength": 1,
              "maxLength": 256,
              "pattern": "^[\\w\\-\\.\\{\\}\\$\\+\\*\\[\\]`|~^@!,:\\\\]+$",
              "description": "Property. Identifier format of any NGSI entity"
            },
            {
              "type": "string",
              "format": "uri",
              "description": "Property. Identifier format of any NGSI entity"
            }
          ],
          "description": "Relationship. A relationship to the ID of the device that monitors raw-water properties. Model:'https://smart-data-models.github.io/dataModel.Device/device-schema.json'"
        },
        "uniqueName": {
          "type": "string",
          "description": "Property. The name of the junction."
        },
        "tag": {
          "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/tag"
        },
        "waterOutflow": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Water flow abstracted from the junction or diverted to another source. Units:'m3/s'"
        },
        "waterInflow": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Water flow inserted to the junction. Units:'m3/s'"
        }
      }
    }
  ],
  "required": [
    "id",
    "type"
  ]
}