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https://issues.apache.org/jira/browse/SOLR-2597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050370#comment-13050370
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Mike Sokolov commented on SOLR-2597:
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OK - I can extend LuceneTestCase, use its random, add can certainly a test for
the Factory.
I'm not sure what the right package for this code is; working in Eclipse of
course, all the jars get mushed into one giant classpath. I guess I should
build w/ant to see the dependency issues? But it does sound as if it needs to
move somewhere where solr/lib contents can be a dependent.
Apparently there is another jar you can get
(http://woodstox.codehaus.org/stax-api-1.0.1.jar) to provide the
javax.xml.stream package (StaX) for Java 5, but it doesn't sound as if it would
be worth the trouble if this moves into solr land - is that right, can we rely
on Java 6 there?
I agree that having a static parser is distasteful, but it's a performance
optimization. It tends to be expensive to instantiate these parsers. I'm not
clear on what the object lifecycle for the XmlCharFilter is exactly - Robert
are you saying the factory is long-lived, but the filter is not?
> XmlCharFilter
> -------------
>
> Key: SOLR-2597
> URL: https://issues.apache.org/jira/browse/SOLR-2597
> Project: Solr
> Issue Type: Improvement
> Components: Schema and Analysis
> Affects Versions: 4.0
> Reporter: Mike Sokolov
> Attachments: SOLR-2597.patch
>
>
> This CharFilter processes incoming XML using the Woodstox parser, stripping
> all non-text content and remembering offsets, just like HTMLCharFilter, but
> respecting XML conventions like XML entities defined in a DTD. XmlCharFilter
> also provides the ability to exclude (and include) the content of certain
> named elements.
> In order to compute character offsets properly when mixed line termination
> styles are present (\r, \r\n), or when XML character entities (<, ",
> &) are present, we require a newer version of Woodstox (4.1.1) than is
> currently in solr/lib. The earlier versions of the parser could not report
> these entity events, so we couldn't tell the difference between "<" and
> "<" and the offsets could be wrong. The upgraded version is in the patch.
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