Example usage for org.apache.lucene.facet.taxonomy TaxonomyFacetSumFloatAssociations TaxonomyFacetSumFloatAssociations

Introduction

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

Prototype

public TaxonomyFacetSumFloatAssociations(String indexFieldName, TaxonomyReader taxoReader, FacetsConfig config,
        FacetsCollector fc) throws IOException 

Source Link

Document

Create TaxonomyFacetSumFloatAssociations against the specified index field.

Usage

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

License:Apache License

/** User runs a query and aggregates facets by summing their association values. */
private List<FacetResult> sumAssociations() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);

    FacetsCollector fc = new FacetsCollector();

    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query:
    FacetsCollector.search(searcher, new MatchAllDocsQuery(), 10, fc);

    Facets tags = new TaxonomyFacetSumIntAssociations("$tags", taxoReader, config, fc);
    Facets genre = new TaxonomyFacetSumFloatAssociations("$genre", taxoReader, config, fc);

    // Retrieve results
    List<FacetResult> results = new ArrayList<>();
    results.add(tags.getTopChildren(10, "tags"));
    results.add(genre.getTopChildren(10, "genre"));

    indexReader.close();//from  ww  w  .java2 s  .c  om
    taxoReader.close();

    return results;
}

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

License:Apache License

/** User drills down on 'tags/solr'. */
private FacetResult drillDown() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);

    // Passing no baseQuery means we drill down on all
    // documents ("browse only"):
    DrillDownQuery q = new DrillDownQuery(config);

    // Now user drills down on Publish Date/2010:
    q.add("tags", "solr");
    FacetsCollector fc = new FacetsCollector();
    FacetsCollector.search(searcher, q, 10, fc);

    // Retrieve results
    Facets facets = new TaxonomyFacetSumFloatAssociations("$genre", taxoReader, config, fc);
    FacetResult result = facets.getTopChildren(10, "genre");

    indexReader.close();/*from   w ww .  j  a  v  a2  s.c om*/
    taxoReader.close();

    return result;
}

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From source file:com.zghw.lucene.demo.AssociationsFacetsExample.java

License:Apache License

/** User runs a query and aggregates facets by summing their association values. */
private List<FacetResult> sumAssociations() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);

    FacetsCollector fc = new FacetsCollector();

    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query:
    FacetsCollector.search(searcher, new MatchAllDocsQuery(), 10, fc);

    Facets tags = new TaxonomyFacetSumIntAssociations("$tags", taxoReader, config, fc);
    Facets genre = new TaxonomyFacetSumFloatAssociations("$genre", taxoReader, config, fc);

    // Retrieve results
    List<FacetResult> results = new ArrayList<FacetResult>();
    results.add(tags.getTopChildren(10, "tags"));
    results.add(genre.getTopChildren(10, "genre"));

    indexReader.close();/*from w w  w .ja v a  2 s.co m*/
    taxoReader.close();

    return results;
}

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