Question 1

How do I validate JSON data using the Aptos CLI?

Accepted Answer

Use the command 'aptos validate -instance [JSON_INSTANCE] [SCHEMA_FILE]'. For example, on macOS: aptos validate -instance '{"firstName": "John"}' person.json. The README provides detailed examples for different operating systems and error handling.

Question 2

Can Aptos convert JSON Schema to Avro schemas?

Accepted Answer

Yes, Aptos supports converting JSON Schema documents to Apache Avro format. Use the CLI command 'aptos convert -format avro [SCHEMA_FILE]' or the Python API with AvroSchemaVisitor, as demonstrated in the structured message generation section.

Question 3

What's the difference between Aptos and the jsonschema Python library for validation?

Accepted Answer

Aptos offers both validation and schema conversion to Avro, while jsonschema focuses solely on validation. Aptos is more specialized for data pipeline interoperability, but jsonschema might have broader JSON Schema draft support and a larger ecosystem.

Question 4

Does Aptos support all JSON Schema drafts?

Accepted Answer

The README mentions validation keywords from the JSON Schema specification but doesn't specify which drafts are supported. It likely handles common keywords like 'required' and 'minimum', but for advanced drafts, you should verify compatibility with your schemas.

Question 5

How can I use the Aptos API to convert a schema in Python?

Accepted Answer

Import SchemaParser and AvroSchemaVisitor, load your JSON schema from a file, parse it with SchemaParser.parse(), and call accept() with the visitor. The README shows an example that outputs the Avro schema as a JSON dictionary.

Question 6

Is Aptos good for validating large datasets in real-time?

Accepted Answer

As a Python-based library, Aptos might not be optimized for high-performance, real-time validation of large datasets. It's better suited for batch processing or data pipeline validation where throughput isn't the primary concern.

Question 7

What are the limitations when converting JSON Schema to Avro with Aptos?

Accepted Answer

Aptos maps JSON Schema types to Avro types, but complex schemas with nested objects, arrays, or union types might have mapping limitations. Also, it only supports Avro, so for other formats, you'll need to wait for future updates or use alternative tools.

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