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SCHEMA_CONSTRAINTS_UPDATE.md

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JSON Schema Constraints Update

Summary

Added minLength: 1 constraint to all required string properties in the openEHR API JSON schemas.

Files Modified

  1. src/main/resources/json_schema/openehr_api_1.0.2_all.json - 185 constraints added
  2. src/main/resources/json_schema/openehr_api_1.0.3_all.json - 183 constraints added
  3. src/main/resources/json_schema/openehr_api_1.0.4_all.json - 184 constraints added
  4. src/main/resources/json_schema/openehr_api_1.1.0_all.json - 193 constraints added

Changes Made

For every property that is:

  • Listed in the required array
  • Has "type": "string"

Added:

  • "minLength": 1 - prevents empty strings
  • "not": {"type": "null"} - explicitly rejects null values

Effect

This ensures that:

  1. Required string properties cannot be empty strings ("")
  2. Required string properties cannot be null

Example

Before:

"value": {
    "type": "string"
}

After:

"value": {
    "type": "string",
    "minLength": 1,
    "not": {
        "type": "null"
    }
}

Validation Behavior

  • ✅ Valid: {"value": "some text"}
  • ❌ Invalid: {"value": ""}
  • ❌ Invalid: {"value": null}
  • ❌ Invalid: {} (missing required property)