Shai Erera created LUCENE-4604:
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Summary: Implement LeavesOnlyOrdinalPolicy
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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