[jbossts-issues] [JBoss JIRA] (JBTM-3262) improve string serialization

[Ondrej Chaloupka (Jira)]

     [ https://issues.redhat.com/browse/JBTM-3262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ondrej Chaloupka closed JBTM-3262.
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> improve string serialization
> ----------------------------
>
>                 Key: JBTM-3262
>                 URL: https://issues.redhat.com/browse/JBTM-3262
>             Project: JBoss Transaction Manager
>          Issue Type: Bug
>          Components: Transaction Core
>    Affects Versions: 5.10.3.Final
>            Reporter: Jonathan Halliday
>            Assignee: Jonathan Halliday
>            Priority: Minor
>             Fix For: 5.10.5.Final
>
>
> Core's handling of unicode string packing is, not to put too fine a point on it, wrong.
> OutputBuffer's packString(String s) assumes the serialized form of a UTF-8 string has the same number of bytes as the String has code units, which is incorrect for any String containing multi-byte code units.
> Since that needs fixing anyhow, the refactoring pulls out the byte[] packing to a separate function from the String encoding, additionally enabling a performance optimization:
> Where a fixed String is packed frequently, the transformation to byte[] can be done once and cached, eliding memory allocation and processing on subsequent invocations. This is particularly useful for the StateManager marker, which is packed to buffers with great frequency.



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