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https://issues.apache.org/jira/browse/AVRO-1362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13741512#comment-13741512
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Doug Cutting commented on AVRO-1362:
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The syntax is incorrect. The correct way to refer to a named schema is just
with its name as a string, not with {"type":<name>}. The latter syntax may
only be used with one of the fixed set of Avro schema types (null, boolean int,
long, float, double, string, bytes, record, fixed, enum, array or map), not
with user type names. The C# implementation is non-standard in accepting this
syntax.
> Avro schema array cannot reference previously defined record types
> ------------------------------------------------------------------
>
> Key: AVRO-1362
> URL: https://issues.apache.org/jira/browse/AVRO-1362
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.7.4
> Environment: Schema class - org.apache.avro:avro:1.7.4
> Also confirmed in Avro 1.7.5 (RC)
> Reporter: Bill Baird
>
> The following schema compiles successfully in Avro(c#), but in
> Avro(Java)returns a "Type not supported: Invoice" when parsing the
> "ListOfInvoices" array.
> Problem appears to be in the parse method. \{"items": "Invoice"\} does not
> properly parse to find the "Invoice" type.
> { "namespace": "SampleClasses",
> "name": "Batch",
> "type": "record",
> "fields": [
> { "name": "Invoices", "type": {
> "type": "array",
> "items": {
> "name": "Invoice",
> "type": "record",
> "fields": [
> { "name": "Id", "type": "string" }
> ]
> }
> }
> },
> { "name": "SingleInvoice", "type": "Invoice" }, //
> This reference to "Invoice" works fine.
> { "name": "ListOfInvoices", "type": {
> "type": "array", "items": { "type":
> "Invoice" } // Fails - does not get previous definition of "Invoice"
> }
> }
> ]
> }
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