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List:       xmlbeans-dev
Subject:    [jira] [Updated] (XMLBEANS-487) Entity replacement in wrong place when expansion coincides with buff
From:       Jesper_Steen_Møller_(JIRA) <xmlbeans-dev () xml ! apache ! org>
Date:       2012-09-07 17:49:08
Message-ID: 1018248390.51364.1347040148522.JavaMail.jiratomcat () arcas
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     [ https://issues.apache.org/jira/browse/XMLBEANS-487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Jesper Steen Møller updated XMLBEANS-487:
-----------------------------------------

    Attachment: patch.txt

I found the bug. When resizing the buffer, and the buffer is split (i.e. with the \
hole in the middle), and the 'i' position was in the newest part of the buffer (i.e. \
before the hole), the, i was adjusted incorrectly.

Patch containing a fix and a test case. I added some comments about the adjustments \
which were not immediately obvious (to me, anyway).  
> Entity replacement in wrong place when expansion coincides with buffer growth
> -----------------------------------------------------------------------------
> 
> Key: XMLBEANS-487
> URL: https://issues.apache.org/jira/browse/XMLBEANS-487
> Project: XMLBeans
> Issue Type: Bug
> Components: XmlObject
> Affects Versions: Version 2.6
> Reporter: Jesper Steen Møller
> Attachments: patch.txt, TestEntityNearBufferGrowth.java
> 
> 
> When serializing an object to XML using newReader(), some of the entity \
> replacements for '&' appear in the wrong places, giving invalid XML. Example:
> <a q='aaaaaaaaaaaaaaaaa'><t>Hall &amp; Oates</t></a>
> could be serialized as:
> <a q='aaaaaaaa&amp;aaaaaaaa'><t>Hall & Oates</t></a>
> The bug depends on the sequence of the read()-calls, the size of the requested \
> buffer, and the content. We're using the newReader to feed a Xalan transformation, \
> and in some tens of millions different transformations, this has happened just a \
> few times -- but this time, we've isolated the problem, which is attached as a \
> stand-alone test case.

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