Example usage for org.apache.lucene.facet FacetsCollector search

Introduction

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

Prototype

public static TopDocs search(IndexSearcher searcher, Query q, int n, Collector fc) throws IOException 

Source Link

Document

Utility method, to search and also collect all hits into the provided Collector .

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  w  w  w  .jav a  2s  .  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();//w  ww. java 2s  .  com
    taxoReader.close();

    return result;
}

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

License:Apache License

/** User runs a query and aggregates facets. */
private FacetResult search() throws IOException, ParseException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);

    // Aggregate categories by an expression that combines the document's score
    // and its popularity field
    Expression expr = JavascriptCompiler.compile("_score * sqrt(popularity)");
    SimpleBindings bindings = new SimpleBindings();
    bindings.add(new SortField("_score", SortField.Type.SCORE)); // the score of the document
    bindings.add(new SortField("popularity", SortField.Type.LONG)); // the value of the 'popularity' field

    // Aggregates the facet values
    FacetsCollector fc = new FacetsCollector(true);

    // 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);

    // Retrieve results
    Facets facets = new TaxonomyFacetSumValueSource(taxoReader, config, fc,
            expr.getDoubleValuesSource(bindings));
    FacetResult result = facets.getTopChildren(10, "A");

    indexReader.close();//  w w w  .j a  v  a 2 s.co m
    taxoReader.close();

    return result;
}

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

License:Apache License

/** User runs a query and counts facets. */
private List<FacetResult> search() 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);

    // Retrieve results
    List<FacetResult> results = new ArrayList<>();

    // Count both "Publish Date" and "Author" dimensions
    Facets author = new FastTaxonomyFacetCounts("author", taxoReader, config, fc);
    results.add(author.getTopChildren(10, "Author"));

    Facets pubDate = new FastTaxonomyFacetCounts("pubdate", taxoReader, config, fc);
    results.add(pubDate.getTopChildren(10, "Publish Date"));

    indexReader.close();/* w  w  w  .  ja  v  a 2s .  com*/
    taxoReader.close();

    return results;
}

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

License:Apache License

/** User runs a query and counts facets. */
public FacetResult search() throws IOException {

    // Aggregates the facet counts
    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 facets = new LongRangeFacetCounts("timestamp", fc, PAST_HOUR, PAST_SIX_HOURS, PAST_DAY);
    return facets.getTopChildren(10, "timestamp");
}

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

License:Apache License

/**
 * User runs a query and counts facets.// ww w  .j av a2  s .  com
 */
private List<FacetResult> facetsWithSearch() 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);

    // Retrieve results
    List<FacetResult> results = new ArrayList<>();

    // Count both "Publish Date" and "Author" dimensions
    Facets facets = new FastTaxonomyFacetCounts(taxoReader, config, fc);
    results.add(facets.getTopChildren(10, "Author"));
    results.add(facets.getTopChildren(10, "Publish Date"));
    results.add(facets.getTopChildren(10, "Category"));

    indexReader.close();
    taxoReader.close();

    return results;
}

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

License:Apache License

/**
 * User drills down on 'Publish Date/2011', and we
 * return facets for 'Author'/*  ww  w  . ja  va2  s  . co  m*/
 */
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("Publish Date", "2010");
    FacetsCollector fc = new FacetsCollector();
    FacetsCollector.search(searcher, q, 10, fc);

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

    indexReader.close();
    taxoReader.close();

    return result;
}

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

License:Apache License

/**
 * User runs a query and counts facets./*from  ww  w .  j a  v  a  2 s . c o  m*/
 */
private List<FacetResult> search() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    SortedSetDocValuesReaderState state = new DefaultSortedSetDocValuesReaderState(indexReader);

    // Aggregatses the facet counts
    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);

    // Retrieve results
    Facets facets = new SortedSetDocValuesFacetCounts(state, fc);

    List<FacetResult> results = new ArrayList<>();
    results.add(facets.getTopChildren(10, "Author"));
    results.add(facets.getTopChildren(10, "Publish Year"));
    indexReader.close();

    return results;
}

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

License:Apache License

/**
 * User drills down on 'Publish Year/2010'.
 *///from  w  ww.  ja  va 2 s.c  om
private FacetResult drillDown() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    SortedSetDocValuesReaderState state = new DefaultSortedSetDocValuesReaderState(indexReader);

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

    // Retrieve results
    Facets facets = new SortedSetDocValuesFacetCounts(state, fc);
    FacetResult result = facets.getTopChildren(10, "Author");
    indexReader.close();

    return result;
}

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From source file:com.justinleegrant.myluceneplayground.SimpleFacetsExample.java

License:Apache License

/** User runs a query and counts facets. */
private List<FacetResult> facetsWithSearch() 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);

    // Retrieve results
    List<FacetResult> results = new ArrayList<>();

    // Count both "Publish Date" and "Author" dimensions
    Facets facets = new FastTaxonomyFacetCounts(taxoReader, config, fc);
    results.add(facets.getTopChildren(10, "Author"));
    results.add(facets.getTopChildren(10, "Publish Date"));

    indexReader.close();/* w  w  w .j  ava 2 s  .c o m*/
    taxoReader.close();

    return results;
}

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