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https://issues.apache.org/jira/browse/LUCENE-4642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13563790#comment-13563790
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Uwe Schindler commented on LUCENE-4642:
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TokenStreams are final and their settings should not be modifiable (the ones
which still have setters are there for backwards compatibility in Lucene 3.x,
in 4.0 all settings should be unmodifiable). It is also impossible to change
the AttributeFactory or AttributeSource after construction because the
attributes are created during construction (addAttribute in the implicit field
initialization constructor), so changing the AttributeSource/Factory afterwards
will not work.
> TokenizerFactory should provide a create method with a given AttributeSource
> ----------------------------------------------------------------------------
>
> Key: LUCENE-4642
> URL: https://issues.apache.org/jira/browse/LUCENE-4642
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 4.1
> Reporter: Renaud Delbru
> Assignee: Steve Rowe
> Labels: analysis, attribute, tokenizer
> Fix For: 4.2, 5.0
>
> Attachments: LUCENE-4642.patch, LUCENE-4642.patch
>
>
> All tokenizer implementations have a constructor that takes a given
> AttributeSource as parameter (LUCENE-1826). However, the TokenizerFactory
> does not provide an API to create tokenizers with a given AttributeSource.
> Side note: There are still a lot of tokenizers that do not provide
> constructors that take AttributeSource and AttributeFactory.
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