{
  "$schema": "https://oo-ld.org/latest/meta/oold-meta-schema.json",
  "$id": "Composition.schema.json",
  "x-oold-uuid": "21e7c9d7-bf27-5c8f-a02d-03ae1075d090",
  "x-oold-version": "0.2.0",
  "title": "Composition",
  "description": "What every composition is: a list of components, each a constituent with an amount. What a constituent may be is what differs, so the subschemas declare it. Terms in this schema's own IRI space are placeholders for a vocabulary that is not agreed yet, not a third ontology: they carry no axioms, and each records what it means in EMMO and in PMDco.",
  "type": "object",
  "properties": {
    "type": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "default": [
        "Composition"
      ]
    },
    "components": {
      "type": "array",
      "minItems": 1,
      "items": {
        "$ref": "#/$defs/Component"
      }
    }
  },
  "$defs": {
    "Component": {
      "type": "object",
      "title": "Component",
      "description": "One constituent of a composition and how much of it there is. What may be a constituent is what the subschemas fix: a chemical species, or another material.",
      "properties": {
        "type": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "default": [
            "Component"
          ]
        },
        "constituent": {
          "type": "string",
          "description": "What the component is made of. Which kind of thing that may be is what a composition fixes: a chemical species, or another material."
        },
        "amount": {
          "$ref": "https://w3id.org/oo-ld/schemas/quantities/0.2/MassFraction.schema.json"
        }
      },
      "required": [
        "type",
        "constituent",
        "amount"
      ]
    }
  },
  "@context": [
    "https://w3id.org/oo-ld/schemas/quantities/0.2/MassFraction.schema.json",
    {
      "@version": 1.1,
      "emmo": "https://w3id.org/emmo#",
      "obo": "http://purl.obolibrary.org/obo/",
      "pmd": "https://w3id.org/pmd/co/",
      "qudt": "http://qudt.org/schema/qudt/",
      "qunit": "http://qudt.org/vocab/unit/",
      "qkind": "http://qudt.org/vocab/quantitykind/",
      "schema": "http://schema.org/",
      "comp": {
        "@id": "https://w3id.org/oo-ld/schemas/materials/0.2/Composition.schema.json#",
        "@prefix": true
      },
      "id": "@id",
      "type": {
        "@id": "@type",
        "@container": "@set"
      },
      "Composition": "https://w3id.org/oo-ld/schemas/materials/0.2/Composition.schema.json",
      "Component": "comp:/$defs/Component",
      "components": {
        "@id": "comp:/properties/components",
        "@type": "@id",
        "@container": "@set"
      },
      "constituent": {
        "@id": "comp:/$defs/Component/properties/constituent"
      },
      "amount": {
        "@id": "comp:/$defs/Component/properties/amount",
        "@type": "@id",
        "@context": "https://w3id.org/oo-ld/schemas/quantities/0.2/MassFraction.schema.json"
      }
    }
  ],
  "x-oold-context": {
    "amount": {
      "emmo:EMMO_95d706e4_8b16_48a1_8dfd_40ccd4df1c12": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv",
          "object_source_version": "https://w3id.org/emmo/1.0.4",
          "comment": "hasQuantityPart, 1.0.4 only"
        }
      },
      "pmd:PMD_0000077": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/pmdco.sssom.tsv",
          "comment": "specified by value"
        }
      }
    }
  },
  "required": [
    "components"
  ],
  "$comment": "`components` reaches an object of this same document, so its terms are in scope already and a scoped @context would only name the document being read. OOLD-CMP-5266 permits the flattening for that case; declaring the scope instead makes the embed graph read as cyclic and skips the round-trip checks."
}