{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://spdx.org/schema/3.0.1/spdx-json-schema.json",
  "title": "SPDX 3.0.1 JSON-LD Schema (Structural Subset)",
  "description": "Focused structural validation for SPDX 3.0.1 JSON-LD documents. Validates key requirements per SPDX 3.0.1 specification.",
  "type": "object",
  "required": ["@context", "@graph"],
  "properties": {
    "@context": {
      "const": "https://spdx.org/rdf/3.0.1/spdx-context.jsonld"
    },
    "@graph": {
      "type": "array",
      "minItems": 1,
      "items": {
        "$ref": "#/$defs/GraphElement"
      }
    }
  },
  "additionalProperties": false,
  "$defs": {
    "GraphElement": {
      "type": "object",
      "required": ["type"],
      "properties": {
        "type": {
          "type": "string",
          "minLength": 1
        },
        "@id": {
          "type": "string"
        },
        "spdxId": {
          "type": "string"
        },
        "creationInfo": {
          "oneOf": [
            { "type": "string" },
            { "type": "object" }
          ]
        },
        "name": {
          "type": "string"
        },
        "created": {
          "type": "string"
        },
        "specVersion": {
          "type": "string"
        },
        "createdBy": {
          "type": "array",
          "items": { "type": "string" }
        },
        "createdUsing": {
          "type": "array",
          "items": { "type": "string" }
        },
        "rootElement": {
          "type": "array",
          "items": { "type": "string" }
        },
        "element": {
          "type": "array",
          "items": { "type": "string" }
        },
        "profileConformance": {
          "type": "array",
          "items": { "type": "string" }
        },
        "software_sbomType": {
          "type": "array",
          "items": { "type": "string" }
        },
        "software_packageVersion": { "type": "string" },
        "software_packageUrl": { "type": "string" },
        "software_downloadLocation": { "type": "string" },
        "software_primaryPurpose": { "type": "string" },
        "software_copyrightText": { "type": "string" },
        "simplelicensing_licenseExpression": { "type": "string" },
        "from": { "type": "string" },
        "relationshipType": { "type": "string" },
        "to": {
          "type": "array",
          "items": { "type": "string" }
        }
      },
      "allOf": [
        {
          "if": {
            "properties": { "type": { "const": "CreationInfo" } },
            "required": ["type"]
          },
          "then": {
            "required": ["@id", "created", "specVersion"]
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "SpdxDocument" } },
            "required": ["type"]
          },
          "then": {
            "required": ["spdxId", "creationInfo", "rootElement", "element"]
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "software_Sbom" } },
            "required": ["type"]
          },
          "then": {
            "required": ["spdxId", "creationInfo", "rootElement", "element"]
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "software_Package" } },
            "required": ["type"]
          },
          "then": {
            "required": ["spdxId", "creationInfo", "name"]
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "software_File" } },
            "required": ["type"]
          },
          "then": {
            "required": ["spdxId", "creationInfo", "name"]
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "Relationship" } },
            "required": ["type"]
          },
          "then": {
            "required": ["spdxId", "creationInfo", "from", "relationshipType", "to"]
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "Tool" } },
            "required": ["type"]
          },
          "then": {
            "required": ["spdxId", "creationInfo", "name"]
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "Organization" } },
            "required": ["type"]
          },
          "then": {
            "required": ["spdxId", "creationInfo", "name"]
          }
        },
        {
          "if": {
            "properties": { "type": { "const": "Person" } },
            "required": ["type"]
          },
          "then": {
            "required": ["spdxId", "creationInfo", "name"]
          }
        }
      ],
      "additionalProperties": true
    }
  }
}