{
  "id": "citation.json#",
  "$schema": "http://json-schema.org/draft-04/schema#",
  "description": "schema for citation",
  "translation": {
    "ISO 19115-2": ["CI_Citation"]
  },
  "type": "object",
  "required": ["title", "date"],
  "allOf": [
    {
      "$ref": "#/definitions/citationFull"
    }
  ],
  "definitions": {
    "citationBase": {
      "title": "base citation",
      "description": "A minimal citation object supporting only basic attributes.",
      "translation": {
        "FGDC CSDGM": ["idinfo > citation > citeinfo"]
      },
      "type": "object",
      "required": ["title"],
      "properties": {
        "title": {
          "type": "string",
          "description": "Name by which the cited resource is known.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > title"],
            "FGDC CSDGM": ["idinfo > citation > citeinfo > title"]
          }
        },
        "date": {
          "type": "array",
          "description": "Date referenced to the cited resource.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > date > CI_Date"]
          },
          "minItems": 1,
          "items": {
            "type": "object",
            "required": ["date", "dateType"],
            "properties": {
              "date": {
                "translation": {
                  "ISO 19115-2": ["CI_Date > date"],
                  "FGDC CSDGM": ["idinfo > citation > citeinfo > pubdate"]
                },
                "$ref": "../schema.json#/definitions/date"
              },
              "dateType": {
                "type": "string",
                "description": "The type of date in the context of the citation.",
                "translation": {
                  "ISO 19115-2": ["CI_Date > dateType [CI_DateTypeCode]"]
                }
              }
            }
          }
        },
        "responsibleParty": {
          "type": "array",
          "description": "Identification of, and means of communication with, person(s) and organization(s) associated with the cited resource.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > citedResponsibleParty > CI_ResponsibleParty"],
            "FGDC CSDGM": ["idinfo > ptcontac > cntinfo"]
          },
          "minItems": 1,
          "items": {
            "$ref": "contact.json#/definitions/contactRef"
          }
        },
        "onlineResource": {
          "type": "array",
          "description": "On-line information related to the citation.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > citedResponsibleParty > CI_ResponsibleParty > contact > CI_Contact > onlineResource > CI_OnlineResource"]
          },
          "items": {
            "$ref": "onlineResource.json#"
          }
        }
      }
    },
    "citationFull": {
      "type": "object",
      "title": "full citation",
      "description": "A full citation object, all attributes are supported.",
      "properties": {
        "edition": {
          "type": "string",
          "description": "Version identifier for the resource.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > edition"],
            "FGDC CSDGM": ["idinfo > citation > edition"]
          }
        },
        "presentationForm": {
          "type": "array",
          "description": "The form that the resource is presented, such as: digital map, digital document, etc.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > presentationForm [CI_PresentationFormCode]"],
            "FGDC CSDGM": ["idinfo > citation > geoform"]
          },
          "items": {
            "type": "string"
          }
        },
        "identifier": {
          "type": "array",
          "description": "Identifier for the resource in the context of the citation.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > identifier"]
          },
          "items": {
            "$ref": "#/definitions/identifier"
          }
        }
      },
      "allOf": [
        {
          "$ref": "#/definitions/citationBase"
        }
      ]
    },
    "identifier": {
      "title": "identifier",
      "description": "Assigned identifier for a resource.",
      "translation": {
        "ISO 19115-2": ["MD_Identifier"]
      },
      "type": "object",
      "required": ["identifier"],
      "properties": {
        "identifier": {
          "type": "string",
          "description": "A name that is used to identify the resource.",
          "translation": {
            "ISO 19115-2": ["MD_Identifier > code"]
          }
        },
        "type": {
          "type": "string",
          "description": "The type of identifier, e.g. doi, isbn, issn, etc.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > ISBN", "CI_Citation > ISSN"]
          }
        },
        "authority": {
          "description": "Citation for the authority issuing the identifier.",
          "translation": {
            "ISO 19115-2": ["MD_Identifier > authority > CI_Citation"]
          },
          "$ref": "#/definitions/citationBase"
        }
      }
    },
    "dictionary": {
      "type": "object",
      "required": ["title", "date"],
      "title": "dictionary citation",
      "description": "A citation object for data dictionaries.",
      "properties": {
        "edition": {
          "type": "string",
          "description": "Version identifier for the dictionary.",
          "translation": {
            "ISO 19115-2": ["CI_Citation > edition"],
            "FGDC CSDGM": ["idinfo > citation > edition"]
          }
        }
      },
      "allOf": [
        {
          "$ref": "#/definitions/citationBase"
        }
      ]
    }
  }
}