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https://issues.apache.org/jira/browse/SOLR-1382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747465#action_12747465
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Yonik Seeley commented on SOLR-1382:
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I think these should all be fixed in trunk? See SOLR-1377
> TokenizerChain ClassCastException
> ---------------------------------
>
> Key: SOLR-1382
> URL: https://issues.apache.org/jira/browse/SOLR-1382
> Project: Solr
> Issue Type: Bug
> Components: Analysis
> Affects Versions: 1.4
> Reporter: Simon Glentworth
> Fix For: 1.4
>
>
> TokenizerChain casts the result of create method in TokenizerFactory to
> Tokenizer.
> {noformat}
> public TokenStreamInfo getStream(String fieldName, Reader reader) {
> Tokenizer tk = (Tokenizer)tokenizer.create(charStream(reader));
> {noformat}
> The TokenizerFactory interface specifies a return type of TokenStream not
> Tokenizer.
> {noformat}
> /** Creates a TokenStream of the specified input */
> public TokenStream create(Reader input);
> {noformat}
> Tokenizer is a subclass of TokenStream and TokenizerChain is luckily working
> in most cases since most token factories return a Tokenizer. The following
> token factories return a TokenStream and will cause a ClassCastException.
> HTMLStripWhitespaceTokenizerFactory
> HTMLStripStandardTokenizerFactory
> PatternTokenizerFactory
> TrieTokenizerFactory
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