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https://issues.apache.org/jira/browse/PROTON-576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13986753#comment-13986753
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Dominic Evans edited comment on PROTON-576 at 5/1/14 5:30 PM:
--------------------------------------------------------------

Whilst I think that was certainly true in Java 5 and 6. There has been a lot of 
work in 2009+ to Java 7 that massively improved the encoder+decoder performance.

e.g.,

https://blogs.oracle.com/xuemingshen/entry/faster_new_string_bytes_cs
https://blogs.oracle.com/xuemingshen/entry/the_big_overhaul_of_java

I can knock up a quick benchmark of using Proton-J to loop over encoding and 
decoding some AmqpValues and capture the values before and after the patch, if 
that'd be of interest?


was (Author: dnwe):
Whilst I think that was certainly true in Java 5 and 6. There has been a lot of 
work in 2009+ to Java 7 that massively improved the encoder+decoder performance.

e.g.,

https://blogs.oracle.com/xuemingshen/entry/faster_new_string_bytes_cs
https://blogs.oracle.com/xuemingshen/entry/the_big_overhaul_of_java

I can knock up a quick benchmark of using Proton-C to loop over encoding and 
decoding some AmqpValues and capture the values before and after the patch, if 
that'd be of interest?

> proton-j: codec support for UTF-8 encoding and decoding appears broken?
> -----------------------------------------------------------------------
>
>                 Key: PROTON-576
>                 URL: https://issues.apache.org/jira/browse/PROTON-576
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: proton-j
>    Affects Versions: 0.7
>            Reporter: Dominic Evans
>         Attachments: 02_fix_stringtype_encode_decode.patch
>
>
> It seems like Proton-J has its own custom UTF-8 encoder, but relies on Java 
> String's built-in UTF-8 decoder. However, the code doesn't seem quite right 
> and complex double byte UTF-8 like emoji ('📔🚢🍛🍴🍹🏊🏄') can quite easily fail to 
> parse:
> |   |   Cause:1       :-  java.lang.IllegalArgumentException: Cannot parse 
> String
> |   |   Message:1     :-  Cannot parse String
> |   |   StackTrace:1  :-  java.lang.IllegalArgumentException: Cannot parse 
> String
> |   |         at 
> org.apache.qpid.proton.codec.StringType$1.decode(StringType.java:48)
> |   |         at 
> org.apache.qpid.proton.codec.StringType$1.decode(StringType.java:36)
> |   |         at 
> org.apache.qpid.proton.codec.DecoderImpl.readRaw(DecoderImpl.java:945)
> |   |         at 
> org.apache.qpid.proton.codec.StringType$AllStringEncoding.readValue(StringType.java:172)
> |   |         at 
> org.apache.qpid.proton.codec.StringType$AllStringEncoding.readValue(StringType.java:124)
> |   |         at 
> org.apache.qpid.proton.codec.DynamicTypeConstructor.readValue(DynamicTypeConstructor.java:39)
> |   |         at 
> org.apache.qpid.proton.codec.DecoderImpl.readObject(DecoderImpl.java:885)
> |   |         at 
> org.apache.qpid.proton.message.impl.MessageImpl.decode(MessageImpl.java:629)



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