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From Doug Cutting <cutt...@apache.org>
Subject Re: Compiling multiple input schemas
Date Tue, 16 Aug 2011 21:48:27 GMT
+1

This sounds like a useful addition to me.

Instead of a comma, might you use a space, so that the last parameter on
the command line was the output directory and all preceding are inputs?

Doug

On 08/16/2011 01:38 PM, Bill Graham wrote:
> Hi,
> 
> With Avro-874, multiple inter-dependent schema files can be parsed. I've
> written a patch to the SpecificCompilerTool to allow the same when
> producing java from multiple schemas that I'd like to contribute for
> consistency if there's interest. It allows you to pass multiple input
> files like this:
> 
> $ java -cp avro-tools-1.6.0.jar org.apache.avro.tool.Main compile schema
> input/position.avsc,input/player.avsc tmp/
> 
> While I was at it, it seemed useful to parse an entire directory of
> schema files as well so I implemented this:
> 
> $ java -cp avro-tools-1.6.0.jar org.apache.avro.tool.Main compile schema
> input/ tmp/
> 
> The latter approach will not work properly for files with dependencies,
> since the file order probably isn't in reverse dependency order. If
> that's the case, a combination of files and directories can be used to
> force an ordering. So if b depends on a and other files depend on either
> of them you could do this:
> 
> $ java -cp avro-tools-1.6.0.jar org.apache.avro.tool.Main compile schema
> input/a.avsc,input/b.avsc,input/ tmp/
> 
> Let me know if some or all of this seems useful to contribute. The first
> example is really the main one that I need. I've done the same for
> Protocol as well btw.
> 
> thanks,
> Bill

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