[AVRO-2822] Need a method to reconstruct the original schema string before referenced schemas were resolved and inlined by the Parser

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.9.2
• Fix Version/s: 1.10.0
• Component/s: java
• Assignee: Robert Yokota
• Reporter: Robert Yokota
• Created: 29/Apr/20 01:32
• Updated: 02/Jul/20 12:22
• Resolved: 01/Jun/20 13:28

Description

I need a method to reconstruct the original schema string before referenced schemas were resolved and inlined by the Parser.

There is already logic to do this for a schema in the context of a protocol, but not after a schema (and its referenced schemas) are submitted to the parse() method of Schema.Parser.

The method would be the following on Schema:

public String toString(Collection<Schema> referencedSchemas, boolean pretty) {
  try {
    StringWriter writer = new StringWriter();
    JsonGenerator gen = FACTORY.createGenerator(writer);
    if (pretty) {
      gen.useDefaultPrettyPrinter();
    }
    Schema.Names names = new Schema.Names();
    if (referencedSchemas != null) {
      for (Schema s : referencedSchemas) {
        names.add(s);
      }
    }
    toJson(names, gen);
    gen.flush();
    return writer.toString();
  } catch (IOException e) {
    throw new AvroRuntimeException(e);
  }
}

 

Issue Links

• relates to: AVRO-2832 [Java] Create a configurable Formatter for Schemas
• links to: GitHub Pull Request #869
• links to: https://github.com/apache/avro/pull/897