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https://issues.apache.org/jira/browse/AVRO-1214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13526718#comment-13526718
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Sébastien Launay commented on AVRO-1214:
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You are right Apache versioning would require a 2.x major version for that, I
can update the patch to add an option to the compiler/maven-plugin like the one
for generating String instead of CharSequence.
Were you thinking of an option to keep Void turned off by default or an option
to generate void turned off by default for 1.8.x?
> Generated protocol's method should return void instead of Void like one-way
> message
> -----------------------------------------------------------------------------------
>
> Key: AVRO-1214
> URL: https://issues.apache.org/jira/browse/AVRO-1214
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.7.2
> Reporter: Sébastien Launay
> Priority: Minor
> Fix For: 1.8.0
>
> Attachments: AVRO-1214-unbox-void-2012-12-05.patch
>
>
> Using the following IDL:
> {noformat}
> @namespace("org.apache.avro.test")
> protocol Simple {
> error TestError {
> string message;
> }
> string hello(string greeting);
> void `error`() throws TestError;
> void ping() oneway;
> }
> {noformat}
> Will produce the interface:
> {code:java}
> package org.apache.avro.test;
> public interface Simple {
> public static final org.apache.avro.Protocol PROTOCOL =
> org.apache.avro.Protocol.parse("...");
> java.lang.CharSequence hello(java.lang.CharSequence greeting) throws
> org.apache.avro.AvroRemoteException;
> java.lang.Void error() throws org.apache.avro.AvroRemoteException,
> org.apache.avro.test.TestError;
> void ping();
> public interface Callback extends Simple {
> public static final org.apache.avro.Protocol PROTOCOL =
> org.apache.avro.test.Simple.PROTOCOL;
> void hello(java.lang.CharSequence greeting,
> org.apache.avro.ipc.Callback<java.lang.CharSequence> callback) throws
> java.io.IOException;
> void error(org.apache.avro.ipc.Callback<java.lang.Void> callback) throws
> java.io.IOException;
> }
> }
> {code}
> Then one is forced to add {{return null;}} statement(s) in the interface
> implementation for the {{error()}} method which can be a bit cumbersome and
> that's not the case for the oneway {{ping()}} method.
> This is fine on the Callback though because the developer can just ignore the
> callback argument.
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