[jira] [Commented] (AVRO-877) Support compiling multiple input schemas and protocols

["Doug Cutting (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AVRO-877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087848#comment-13087848 ] 

Doug Cutting commented on AVRO-877:
-----------------------------------

Looks good in general.

I think the System.out statements should probably be System.err.  We should only use System.out from command line programs for output data.

Also, should we add a test or two for the new functionality?


> Support compiling multiple input schemas and protocols
> ------------------------------------------------------
>
>                 Key: AVRO-877
>                 URL: https://issues.apache.org/jira/browse/AVRO-877
>             Project: Avro
>          Issue Type: Improvement
>            Reporter: Bill Graham
>            Assignee: Bill Graham
>         Attachments: AVRO-877_1.patch
>
>
> With AVRO-872, multiple inter-dependent schema files can be parsed. {{SpecificCompilerTool}} should be changed to allow the same when producing java from multiple schemas or protocols. Proposed syntax change is to allow multiple files or directories to be passed (space-delimited) before the last token, which is the output path.
> - To compile multiple files where {{b}} depends on {{a}}:
> {noformat}
> $ java -cp avro-tools-x.x.x.jar org.apache.avro.tool.Main \
>   compile schema input/a.avsc input/b.avsc output
> {noformat}
> - To compile files from multiple directories:
> {noformat}
> $ java -cp avro-tools-x.x.x.jar org.apache.avro.tool.Main \
>   compile schema input1 input2 output
> {noformat}
> - To compile {{b}} which depends on {{a}} and all the other content in {{input}} that might depend on {{a}} or {{b}}:
> {noformat}
> $ java -cp avro-tools-x.x.x.jar org.apache.avro.tool.Main \
>   compile schema input/a.avsc input/b.avsc input output
> {noformat}

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