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https://issues.apache.org/jira/browse/LUCENE-1823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12904892#action_12904892
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Adriano Crestani commented on LUCENE-1823:
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I agree with Michael, AttributeSource was designed for another purpose, and
does not really fit for configuration purposes.
The map idea is really good and fits well as configuration for the QP, but I
would like to restrict the key type, so the user doesn't use a String object as
key. String keys may lead to runtime errors, mainly when they are inserted
inline. I would prefer to use enums as keys, it would enforce the user to
always pass the same object as key when referencing the same configuration. It
also avoids duplicated configuration keys, once each enum type has only one
instance per JVM.
If nobody complains about using a Map<Enum<?>, Object> as configuration for QP
framework, I will start working on a new patch including these changes soon.
> QueryParser with new features for Lucene 3
> ------------------------------------------
>
> Key: LUCENE-1823
> URL: https://issues.apache.org/jira/browse/LUCENE-1823
> Project: Lucene - Java
> Issue Type: New Feature
> Components: QueryParser
> Reporter: Michael Busch
> Assignee: Luis Alves
> Priority: Minor
> Fix For: 4.0
>
> Attachments: lucene_1823_any_opaque_precedence_fuzzybug_v2.patch,
> lucene_1823_foo_bug_08_26_2009.patch
>
>
> I'd like to have a new QueryParser implementation in Lucene 3.1, ideally
> based on the new QP framework in contrib. It should share as much code as
> possible with the current StandardQueryParser implementation for easy
> maintainability.
> Wish list (feel free to extend):
> 1. *Operator precedence*: Support operator precedence for boolean operators
> 2. *Opaque terms*: Ability to plugin an external parser for certain syntax
> extensions, e.g. XML query terms
> 3. *Improved RangeQuery syntax*: Use more intuitive <=, =, >= instead of []
> and {}
> 4. *Support for trierange queries*: See LUCENE-1768
> 5. *Complex phrases*: See LUCENE-1486
> 6. *ANY operator*: E.g. (a b c d) ANY 3 should match if 3 of the 4 terms
> occur in the same document
> 7. *New syntax for Span queries*: I think the surround parser supports this?
> 8. *Escaped wildcards*: See LUCENE-588
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