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https://issues.apache.org/jira/browse/SOLR-569?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Rutherglen closed SOLR-569.
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Resolution: Won't Fix
Sorry if this spam's things, however it's unlikely that I'll work on these.
> SimpleFacet binarysearch optimization
> -------------------------------------
>
> Key: SOLR-569
> URL: https://issues.apache.org/jira/browse/SOLR-569
> Project: Solr
> Issue Type: Improvement
> Components: search
> Affects Versions: 1.3
> Reporter: Jason Rutherglen
> Priority: Minor
>
> Looks like the SimpleFacets.getFieldCacheCounts could have small optimization:
> {noformat}
> startTermIndex = Arrays.binarySearch(terms,prefix,nullStrComparator);
> if (startTermIndex<0) startTermIndex=-startTermIndex-1;
> // find the end term. \uffff isn't a legal unicode char, but only compareTo
> // is used, so it should be fine, and is guaranteed to be bigger than legal
> chars.
> endTermIndex =
> Arrays.binarySearch(terms,prefix+"\uffff\uffff\uffff\uffff",nullStrComparator);
> endTermIndex = -endTermIndex-1;
> {noformat}
> to:
> {noformat}
> startTermIndex = Arrays.binarySearch(terms,prefix,nullStrComparator);
> if (startTermIndex<0) startTermIndex=-startTermIndex-1;
> // find the end term. \uffff isn't a legal unicode char, but only compareTo
> // is used, so it should be fine, and is guaranteed to be bigger than legal
> chars.
> endTermIndex = Arrays.binarySearch(terms, startTermIndex,
> terms.length, prefix+"\uffff\uffff\uffff\uffff",nullStrComparator);
> endTermIndex = -endTermIndex-1;
> {noformat}
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