Ismaël Mejía created AVRO-4314:
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Summary: [csharp] Validate names against the Avro name grammar at
parse time
Key: AVRO-4314
URL: https://issues.apache.org/jira/browse/AVRO-4314
Project: Apache Avro
Issue Type: Bug
Components: csharp
Reporter: Ismaël Mejía
The Avro specification requires record/enum/fixed names, field names, enum
symbols, and protocol message names to match `[A-Za-z_][A-Za-z0-9_]*` (with
dotted namespaces). The Java SDK enforces this during parsing, but the C# SDK
does not validate all of these.
In the C# SDK only enum symbols are validated (EnumSchema); record/fixed/enum
names, namespaces, field names, and protocol message names are accepted
verbatim (SchemaName, Field, Message). Because the C# code generator splices
some of these values directly into generated source (for example protocol
message names into a `case "..."` label and field names into Get/Put switch
bodies via CodeSnippetExpression), an out-of-spec name produces malformed or
unexpected generated C# code.
Proposal: validate names, field names, and message names against the Avro name
grammar during schema/protocol parsing in the C# SDK, matching the Java SDK
behavior, and add tests covering rejection of out-of-spec values.
Note: this ticket was split from the combined [c++][csharp] issue AVRO-4312;
the C++ part remains tracked there.
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