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From "Martin Traverso (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AVRO-143) use ASM to accellerate reflection
Date Wed, 14 Oct 2009 04:46:31 GMT

    [ https://issues.apache.org/jira/browse/AVRO-143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12765391#action_12765391

Martin Traverso commented on AVRO-143:

I did something similar a while ago for Thrift: http://github.com/martint/swift

Essentially, it takes a schema and a class representing a java bean or a Map and it generates
a class dynamically that knows how to call the right methods as it reads and writes raw fields
from the underlying transport.

I wouldn't expect porting it to work with Avro to be too complicated, and I've been thinking
about doing it at some point.

> use ASM to accellerate reflection
> ---------------------------------
>                 Key: AVRO-143
>                 URL: https://issues.apache.org/jira/browse/AVRO-143
>             Project: Avro
>          Issue Type: Improvement
>          Components: java
>            Reporter: Doug Cutting
> Java reflection is very slow, about 100 times slower for field access than normal Java
code.  However reflection might be a useful tool for converting existing codebases to use
> One could, using ASM (http://asm.ow2.org/) make existing compiled classes to implement
the SpecificRecord interface or something similar:
> http://hadoop.apache.org/avro/docs/current/api/java/org/apache/avro/specific/SpecificRecord.html
> This would make existing classes as fast to serialize as generated classes.

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