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https://issues.apache.org/jira/browse/LUCENE-4604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shai Erera updated LUCENE-4604:
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Summary: Implement OrdinalPolicy.NO_PARENTS (was: Implement
LeavesOnlyOrdinalPolicy)
> Implement OrdinalPolicy.NO_PARENTS
> ----------------------------------
>
> Key: LUCENE-4604
> URL: https://issues.apache.org/jira/browse/LUCENE-4604
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/facet
> Reporter: Shai Erera
> Assignee: Shai Erera
> Priority: Minor
> Fix For: 4.1, 5.0
>
>
> Over at LUCENE-4602, Mike explored the idea of writing just the leaf nodes in
> the fulltree posting, rather than the full hierarchy. I wrote this simple
> OrdinalPolicy which achieves that:
> {code}
> DefaultFacetIndexingParams indexingParams = new DefaultFacetIndexingParams() {
> @Override
> protected OrdinalPolicy fixedOrdinalPolicy() {
> return new OrdinalPolicy() {
> public void init(TaxonomyWriter taxonomyWriter) {}
> public boolean shouldAdd(int ordinal) { return false; }
> };
> }
> };
> {code}
> I think that we should add it as a singleton class to
> OrdinalPolicy.EXACT_CATEGORIES_ONLY, as wel as make DefaultOrdPolicy as
> singleton too, under the name FULL_HIERARCHY (feel free to suggest a better
> name).
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