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Posted to issues@commons.apache.org by "Benedikt Ritter (JIRA)" <ji...@apache.org> on 2015/03/14 12:46:38 UTC
[jira] [Updated] (LANG-990) Avoid String allocation in
StrBuilder.append(CharSequence)
[ https://issues.apache.org/jira/browse/LANG-990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Benedikt Ritter updated LANG-990:
---------------------------------
Fix Version/s: (was: Patch Needed)
Review Patch
> Avoid String allocation in StrBuilder.append(CharSequence)
> ----------------------------------------------------------
>
> Key: LANG-990
> URL: https://issues.apache.org/jira/browse/LANG-990
> Project: Commons Lang
> Issue Type: Improvement
> Components: lang.text.*
> Affects Versions: 3.3.1
> Reporter: Mikhail Mazurskiy
> Labels: github
> Fix For: Review Patch
>
> Attachments: LANG-990-v2.patch, LANG-990-v3.patch, LANG-990.patch
>
>
> StrBuilder.append(CharSequence) and StrBuilder.append(CharSequence, int, int) can be optimized for the case when CharBuffer is passed. Current implementation calls toString() method that allocates a new String. In case when CharBuffer.hasArray() returns true the buffer-backing char array can be accessed directly to copy chars from it.
> Also an instanceOf StrBuilder check can be added to StrBuilder.append(CharSequence) and StrBuilder.append(CharSequence, int, int) to avoid toString() in that case too (StrBuilder can be passed as CharSequence in some cases).
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