Example usage for org.apache.lucene.facet DrillSideways DrillSideways

Introduction

In this page you can find the example usage for org.apache.lucene.facet DrillSideways DrillSideways.

Prototype

public DrillSideways(IndexSearcher searcher, FacetsConfig config, TaxonomyReader taxoReader,
        SortedSetDocValuesReaderState state) 

Source Link

Document

Create a new DrillSideways instance, where some dimensions were indexed with SortedSetDocValuesFacetField and others were indexed with FacetField .

Usage

From source file:com.czw.search.lucene.example.facet.RangeFacetsExample.java

License:Apache License

/** User drills down on the specified range, and also computes drill sideways counts. */
public DrillSideways.DrillSidewaysResult drillSideways(LongRange range) throws IOException {
    // Passing no baseQuery means we drill down on all
    // documents ("browse only"):
    DrillDownQuery q = new DrillDownQuery(getConfig());
    q.add("timestamp", LongPoint.newRangeQuery("timestamp", range.min, range.max));

    // DrillSideways only handles taxonomy and sorted set drill facets by default; to do range facets we must subclass and override the
    // buildFacetsResult method.
    DrillSideways.DrillSidewaysResult result = new DrillSideways(searcher, getConfig(), null, null) {
        @Override/*  w  w w.  j  a  v  a2 s .c  o m*/
        protected Facets buildFacetsResult(FacetsCollector drillDowns, FacetsCollector[] drillSideways,
                String[] drillSidewaysDims) throws IOException {
            // If we had other dims we would also compute their drill-down or drill-sideways facets here:
            assert drillSidewaysDims[0].equals("timestamp");
            return new LongRangeFacetCounts("timestamp", drillSideways[0], PAST_HOUR, PAST_SIX_HOURS, PAST_DAY);
        }
    }.search(q, 10);

    return result;
}

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