Example usage for org.apache.lucene.facet.taxonomy ParallelTaxonomyArrays children

Introduction

In this page you can find the example usage for org.apache.lucene.facet.taxonomy ParallelTaxonomyArrays children.

Prototype

public abstract int[] children();

Source Link

Document

Returns the children array, where children[i] denotes a child of category ordinal i .

Usage

From source file:org.exist.indexing.lucene.QueryFacetCollector.java

License:Open Source License

private List<FacetResult> accumulate() throws IOException {

    // aggregate facets per category list (usually only one category list)
    FacetsAggregator aggregator = getAggregator();
    for (CategoryListParams clp : getCategoryLists()) {
        for (MatchingDocs md : matchingDocs) {
            aggregator.aggregate(md, clp, facetArrays);
        }//from  w w w .  j a v a 2s. c  o m
    }

    ParallelTaxonomyArrays arrays = taxonomyReader.getParallelTaxonomyArrays();

    // compute top-K
    final int[] children = arrays.children();
    final int[] siblings = arrays.siblings();
    List<FacetResult> res = new ArrayList<>();
    for (FacetRequest fr : searchParams.facetRequests) {
        int rootOrd = taxonomyReader.getOrdinal(fr.categoryPath);
        // category does not exist
        if (rootOrd == TaxonomyReader.INVALID_ORDINAL) {
            // Add empty FacetResult
            res.add(emptyResult(rootOrd, fr));
            continue;
        }
        CategoryListParams clp = searchParams.indexingParams.getCategoryListParams(fr.categoryPath);
        // someone might ask to aggregate ROOT category
        if (fr.categoryPath.length > 0) {
            OrdinalPolicy ordinalPolicy = clp.getOrdinalPolicy(fr.categoryPath.components[0]);
            if (ordinalPolicy == OrdinalPolicy.NO_PARENTS) {
                // rollup values
                aggregator.rollupValues(fr, rootOrd, children, siblings, facetArrays);
            }
        }

        FacetResultsHandler frh = createFacetResultsHandler(fr);
        res.add(frh.compute());
    }
    return res;
}

---