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https://issues.apache.org/jira/browse/LUCENE-1673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12719729#action_12719729
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Uwe Schindler commented on LUCENE-1673:
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bq. Did you think about / decide against making a NumericField (that'd set the
right tokenStream itself)?
The problem currently is:
- Field is final and so I must extend AbstractField. But some methods of
Document return Field and not AbstractField.
- NumericField would only work for indexing, but when retrieving from index
(stored fields), it would change to Field.
Maybe we should move this after the index-specific schemas and so on. Or
document, that it can be only used for indexing.
By the way: How do you like the factories in NumericRangeQuery and the setValue
methods, working like StringBuffer.append() in NumericTokenStream? This makes
it really easy to index.
The only good thing of NumericField would be the possibility to automatically
disable TF and Norms per default when indexing.
> Move TrieRange to core
> ----------------------
>
> Key: LUCENE-1673
> URL: https://issues.apache.org/jira/browse/LUCENE-1673
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Search
> Affects Versions: 2.9
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: 2.9
>
> Attachments: LUCENE-1673.patch, LUCENE-1673.patch
>
>
> TrieRange was iterated many times and seems stable now (LUCENE-1470,
> LUCENE-1582, LUCENE-1602). There is lots of user interest, Solr added it to
> its default FieldTypes (SOLR-940) and if possible I want to move it to core
> before release of 2.9.
> Before this can be done, there are some things to think about:
> # There are now classes called LongTrieRangeQuery, IntTrieRangeQuery, how
> should they be called in core? I would suggest to leave it as it is. On the
> other hand, if this keeps our only numeric query implementation, we could
> call it LongRangeQuery, IntRangeQuery or NumericRangeQuery (see below, here
> are problems). Same for the TokenStreams and Filters.
> # Maybe the pairs of classes for indexing and searching should be moved into
> one class: NumericTokenStream, NumericRangeQuery, NumericRangeFilter. The
> problem here: ctors must be able to pass int, long, double, float as range
> parameters. For the end user, mixing these 4 types in one class is hard to
> handle. If somebody forgets to add a L to a long, it suddenly instantiates a
> int version of range query, hitting no results and so on. Same with other
> types. Maybe accept java.lang.Number as parameter (because nullable for
> half-open bounds) and one enum for the type.
> # TrieUtils move into o.a.l.util? or document or?
> # Move TokenStreams into o.a.l.analysis, ShiftAttribute into
> o.a.l.analysis.tokenattributes? Somewhere else?
> # If we rename the classes, should Solr stay with Trie (because there are
> different impls)?
> # Maybe add a subclass of AbstractField, that automatically creates these
> TokenStreams and omits norms/tf per default for easier addition to Document
> instances?
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