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https://issues.apache.org/jira/browse/OAK-9145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17278130#comment-17278130
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Thomas Mueller commented on OAK-9145:
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Would it be an option to keep the current (arguably buggy) behavior by default,
and introduce a version number to the configuration. Then with version 2, we
can fix the bug. That would need to be documented.
That way, it's possible to fix the problem, but one would have to set version =
2. That way, old code (that expects the old behavior) would still continue to
work as is.
> OakAnalyzer applies LowerCaseFilter and WordDelimiterFilter in wrong order
> --------------------------------------------------------------------------
>
> Key: OAK-9145
> URL: https://issues.apache.org/jira/browse/OAK-9145
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: indexing, jcr, lucene
> Environment: Discovered while performing DAM searches in Adobe
> Experience Manager.
> Reporter: Dave Hughes
> Assignee: Fabrizio Fortino
> Priority: Minor
> Labels: easyfix, pull-request-available
>
> I believe OakAnalyzer applies LowerCaseFilter and WordDelimiterFilter in the
> wrong order. WordDelimiterFilter is invoked with the GENERATE_WORD_PARTS
> flag, which splits camelCase/PascalCase into multiple terms, but since the
> LowerCaseFilter is applied first, the mixed-case is lost and the terms can't
> be split.
> Searching for savings, the damAssetLucene index (which uses the default
> OakAnalyzer) does not find an asset named savingsAccount.svg.
> Upon configuring the index's analyzers (/oak:index/damAssetLucene/analyzers)
> to apply WordDelimiterFilter before LowerCaseFilter, the correct behaviour
> was seen.
> {noformat}
> {
> "jcr:primaryType": "nt:unstructured",
> "default": {
> "jcr:primaryType": "nt:unstructured",
> "tokenizer": {
> "jcr:primaryType": "nt:unstructured",
> "name": "Standard"
> },
> "filters": {
> "jcr:primaryType": "nt:unstructured",
> "WordDelimiter": {"jcr:primaryType": "nt:unstructured"},
> "LowerCase": {"jcr:primaryType": "nt:unstructured"}
> }
> }
> }
> {noformat}
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