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Posted to dev@lucene.apache.org by "Scott Gonyea (JIRA)" <ji...@apache.org> on 2010/09/14 23:16:34 UTC
[jira] Created: (LUCENE-2644) LowerCaseTokenizer Does Not Behave As
One Might Expect (or Desire)--Given Its Name
LowerCaseTokenizer Does Not Behave As One Might Expect (or Desire)--Given Its Name
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Key: LUCENE-2644
URL: https://issues.apache.org/jira/browse/LUCENE-2644
Project: Lucene - Java
Issue Type: Bug
Components: Analysis
Affects Versions: 3.0.2
Reporter: Scott Gonyea
Fix For: 3.0.3, 3.1, Realtime Branch, 4.0
While I understand some of the reasons for its design, the original LowerCaseTokenizer should have been named LowerCaseLetterTokenizer.
I feel that LowerCaseTokenizer makes too many assumptions about what too tokenize, and I have therefore patched it. The *default* behavior will remain as it always has--to avoid breaking any implementations for which it's being used.
I have changed LowerCaseTokenizer to extend CharTokenizer (rather than LetterTokenizer). LetterTokenizer's functionality was merged into the default behavior of LowerCaseTokenizer.
Getter/Setter methods have been added to the LowerCaseTokenizer Class, allowing you to turn on / off tokenizing by white space, numbers, and special (Non-Alpha/Numeric) characters.
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[jira] Updated: (LUCENE-2644) LowerCaseTokenizer Does Not Behave As
One Might Expect (or Desire)--Given Its Name
Posted by "Robert Muir (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-2644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir updated LUCENE-2644:
--------------------------------
Fix Version/s: (was: Realtime Branch)
(was: 3.0.3)
(was: 3.1)
Issue Type: Wish (was: Bug)
> LowerCaseTokenizer Does Not Behave As One Might Expect (or Desire)--Given Its Name
> ----------------------------------------------------------------------------------
>
> Key: LUCENE-2644
> URL: https://issues.apache.org/jira/browse/LUCENE-2644
> Project: Lucene - Java
> Issue Type: Wish
> Components: Analysis
> Affects Versions: 3.0.2
> Reporter: Scott Gonyea
> Fix For: 4.0
>
> Attachments: LowerCaseTokenizer.patch
>
>
> While I understand some of the reasons for its design, the original LowerCaseTokenizer should have been named LowerCaseLetterTokenizer.
> I feel that LowerCaseTokenizer makes too many assumptions about what too tokenize, and I have therefore patched it. The *default* behavior will remain as it always has--to avoid breaking any implementations for which it's being used.
> I have changed LowerCaseTokenizer to extend CharTokenizer (rather than LetterTokenizer). LetterTokenizer's functionality was merged into the default behavior of LowerCaseTokenizer.
> Getter/Setter methods have been added to the LowerCaseTokenizer Class, allowing you to turn on / off tokenizing by white space, numbers, and special (Non-Alpha/Numeric) characters.
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[jira] Commented: (LUCENE-2644) LowerCaseTokenizer Does Not Behave
As One Might Expect (or Desire)--Given Its Name
Posted by "Robert Muir (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-2644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12922383#action_12922383 ]
Robert Muir commented on LUCENE-2644:
-------------------------------------
I don't understand this issue, to me the LowerCaseTokenizer explains clearly what it does:
{noformat}
* LowerCaseTokenizer performs the function of LetterTokenizer
* and LowerCaseFilter together. It divides text at non-letters and converts
* them to lower case.
{noformat}
I think there is a lot of other options if you want to customize tokenization by numbers, punctuation etc, especially Solr's WordDelimiterFilter.
> LowerCaseTokenizer Does Not Behave As One Might Expect (or Desire)--Given Its Name
> ----------------------------------------------------------------------------------
>
> Key: LUCENE-2644
> URL: https://issues.apache.org/jira/browse/LUCENE-2644
> Project: Lucene - Java
> Issue Type: Bug
> Components: Analysis
> Affects Versions: 3.0.2
> Reporter: Scott Gonyea
> Fix For: 4.0
>
> Attachments: LowerCaseTokenizer.patch
>
>
> While I understand some of the reasons for its design, the original LowerCaseTokenizer should have been named LowerCaseLetterTokenizer.
> I feel that LowerCaseTokenizer makes too many assumptions about what too tokenize, and I have therefore patched it. The *default* behavior will remain as it always has--to avoid breaking any implementations for which it's being used.
> I have changed LowerCaseTokenizer to extend CharTokenizer (rather than LetterTokenizer). LetterTokenizer's functionality was merged into the default behavior of LowerCaseTokenizer.
> Getter/Setter methods have been added to the LowerCaseTokenizer Class, allowing you to turn on / off tokenizing by white space, numbers, and special (Non-Alpha/Numeric) characters.
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[jira] Updated: (LUCENE-2644) LowerCaseTokenizer Does Not Behave As
One Might Expect (or Desire)--Given Its Name
Posted by "Scott Gonyea (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/LUCENE-2644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Scott Gonyea updated LUCENE-2644:
---------------------------------
Attachment: LowerCaseTokenizer.patch
This patch will retain original functionality, while permitting the user to modify the assumptions on which tokens are built.
> LowerCaseTokenizer Does Not Behave As One Might Expect (or Desire)--Given Its Name
> ----------------------------------------------------------------------------------
>
> Key: LUCENE-2644
> URL: https://issues.apache.org/jira/browse/LUCENE-2644
> Project: Lucene - Java
> Issue Type: Bug
> Components: Analysis
> Affects Versions: 3.0.2
> Reporter: Scott Gonyea
> Fix For: 3.0.3, 3.1, Realtime Branch, 4.0
>
> Attachments: LowerCaseTokenizer.patch
>
>
> While I understand some of the reasons for its design, the original LowerCaseTokenizer should have been named LowerCaseLetterTokenizer.
> I feel that LowerCaseTokenizer makes too many assumptions about what too tokenize, and I have therefore patched it. The *default* behavior will remain as it always has--to avoid breaking any implementations for which it's being used.
> I have changed LowerCaseTokenizer to extend CharTokenizer (rather than LetterTokenizer). LetterTokenizer's functionality was merged into the default behavior of LowerCaseTokenizer.
> Getter/Setter methods have been added to the LowerCaseTokenizer Class, allowing you to turn on / off tokenizing by white space, numbers, and special (Non-Alpha/Numeric) characters.
--
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