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https://issues.apache.org/jira/browse/AVRO-2544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17653543#comment-17653543
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Michal Sabo commented on AVRO-2544:
-----------------------------------
You may probably find it useful, there is already an Avro compiler extension
specificaly providing the these features -
https://github.com/sabomichal/avro-compiler-extension
> Allow avro-maven-plugin to generate Java classes that implement interfaces
> ---------------------------------------------------------------------------
>
> Key: AVRO-2544
> URL: https://issues.apache.org/jira/browse/AVRO-2544
> Project: Apache Avro
> Issue Type: Wish
> Components: java
> Affects Versions: 1.9.0
> Reporter: Michael Snell
> Priority: Major
>
> Currently Java code generated by the avro-maven-plugin implements the
> org.apache.avro.specific.SpecificRecord interface, but there is no ability to
> have the generated code implement additional interfaces, which would make it
> possible to improve type-safety and readability.
> Similar to the already existing @java-class annotation
> ([https://avro.apache.org/docs/current/idl.html#minutiae_annotations]) I
> suggest adding a @java-implements annotation that could be added to a record
> definition:
> {code:java}
> @java-implements("an.example.JavaInterface")
> record AnExampleRecord {
> ...{code}
> This would be used by the avro-maven-plugin when generating Java code such
> that the result implements both SpecificRecord and the specified interface:
> {code:java}
> public class AnExampleRecord extends
> org.apache.avro.specific.SpecificRecordBase implements
> org.apache.avro.specific.SpecificRecord , an.example.JavaInterface{code}
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