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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2597) XmlCharFilter
Date Thu, 16 Jun 2011 13:27:48 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050406#comment-13050406
] 

Robert Muir commented on SOLR-2597:
-----------------------------------

yes, the factories are long-lived and do expensive things up-front to configure themselves
(parsing files etc)


> 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 (&lt;, &quot;, &amp;) 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 "&lt;" and the offsets could be wrong.  The upgraded version is in
the patch.

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