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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-2731) HyphenationCompoundWordTokenFilter fails to load DTD in Crimson parser (JDK 1.4)
Date Sun, 31 Oct 2010 10:01:52 GMT
HyphenationCompoundWordTokenFilter fails to load DTD in Crimson parser (JDK 1.4)
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                 Key: LUCENE-2731
                 URL: https://issues.apache.org/jira/browse/LUCENE-2731
             Project: Lucene - Java
          Issue Type: Bug
          Components: contrib/analyzers
            Reporter: Uwe Schindler
            Assignee: Uwe Schindler
             Fix For: 2.9.4


HyphenationCompoundWordTokenFilter loads the DTD in its XML parser from memory by supplying
EntityResolver. In Java 1.4 (affects Lucene 2.9, but also later versions if not Apache Xerces
is used as XML parser) this does not work, because Cromson does not even ask the entity resolver,
if no base URI is known. As the hyphenation file is loaded from Reader/InputStream no base
URI is known. Crimson needs at least a non-null systemId to proceed.

This patch (Lucene 2.9 only)  fakes this by supplying a fake systemId to the InputSource.

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