Index: lucene/demo/src/java/org/apache/lucene/demo/facet/SimpleSortedSetFacetsExample.java =================================================================== --- lucene/demo/src/java/org/apache/lucene/demo/facet/SimpleSortedSetFacetsExample.java (revision 0) +++ lucene/demo/src/java/org/apache/lucene/demo/facet/SimpleSortedSetFacetsExample.java (working copy) @@ -0,0 +1,165 @@ +package org.apache.lucene.demo.facet; + +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; + +import org.apache.lucene.analysis.core.WhitespaceAnalyzer; +import org.apache.lucene.document.Document; +import org.apache.lucene.facet.index.FacetFields; +import org.apache.lucene.facet.params.FacetSearchParams; +import org.apache.lucene.facet.search.CountFacetRequest; +import org.apache.lucene.facet.search.DrillDownQuery; +import org.apache.lucene.facet.search.FacetResult; +import org.apache.lucene.facet.search.FacetsCollector; +import org.apache.lucene.facet.sortedset.SortedSetDocValuesAccumulator; +import org.apache.lucene.facet.sortedset.SortedSetDocValuesFacetFields; +import org.apache.lucene.facet.sortedset.SortedSetDocValuesReaderState; +import org.apache.lucene.facet.taxonomy.CategoryPath; +import org.apache.lucene.facet.taxonomy.TaxonomyReader; +import org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader; +import org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyWriter; +import org.apache.lucene.index.DirectoryReader; +import org.apache.lucene.index.IndexWriter; +import org.apache.lucene.index.IndexWriterConfig; +import org.apache.lucene.search.IndexSearcher; +import org.apache.lucene.search.MatchAllDocsQuery; +import org.apache.lucene.store.Directory; +import org.apache.lucene.store.RAMDirectory; + +/** Shows simple usage of faceted indexing and search, + * using {@link SortedSetDocValuesFacetFields} and {@link + * SortedSetDocValuesAccumulator}. */ + +public class SimpleSortedSetFacetsExample { + + private final Directory indexDir = new RAMDirectory(); + + /** Empty constructor */ + public SimpleSortedSetFacetsExample() {} + + private void add(IndexWriter indexWriter, SortedSetDocValuesFacetFields facetFields, String ... categoryPaths) throws IOException { + Document doc = new Document(); + + List paths = new ArrayList(); + for (String categoryPath : categoryPaths) { + paths.add(new CategoryPath(categoryPath, '/')); + } + facetFields.addFields(doc, paths); + indexWriter.addDocument(doc); + } + + /** Build the example index. */ + private void index() throws IOException { + IndexWriter indexWriter = new IndexWriter(indexDir, new IndexWriterConfig(FacetExamples.EXAMPLES_VER, + new WhitespaceAnalyzer(FacetExamples.EXAMPLES_VER))); + + // Reused across documents, to add the necessary facet fields + SortedSetDocValuesFacetFields facetFields = new SortedSetDocValuesFacetFields(); + + add(indexWriter, facetFields, "Author/Bob", "Publish Date/2010/10/15"); + add(indexWriter, facetFields, "Author/Lisa", "Publish Date/2010/10/20"); + add(indexWriter, facetFields, "Author/Lisa", "Publish Date/2012/1/1"); + add(indexWriter, facetFields, "Author/Susan", "Publish Date/2012/1/7"); + add(indexWriter, facetFields, "Author/Frank", "Publish Date/1999/5/5"); + + indexWriter.close(); + } + + /** User runs a query and counts facets. */ + private List search() throws IOException { + DirectoryReader indexReader = DirectoryReader.open(indexDir); + IndexSearcher searcher = new IndexSearcher(indexReader); + SortedSetDocValuesReaderState state = new SortedSetDocValuesReaderState(indexReader); + + // Count both "Publish Date" and "Author" dimensions + FacetSearchParams fsp = new FacetSearchParams( + new CountFacetRequest(new CategoryPath("Publish Date"), 10), + new CountFacetRequest(new CategoryPath("Author"), 10)); + + // Aggregatses the facet counts + FacetsCollector fc = FacetsCollector.create(new SortedSetDocValuesAccumulator(fsp, state)); + + // MatchAllDocsQuery is for "browsing" (counts facets + // for all non-deleted docs in the index); normally + // you'd use a "normal" query, and use MultiCollector to + // wrap collecting the "normal" hits and also facets: + searcher.search(new MatchAllDocsQuery(), fc); + + // Retrieve results + List facetResults = fc.getFacetResults(); + + indexReader.close(); + + return facetResults; + } + + /** User drills down on 'Publish date/2010'. */ + private List drillDown() throws IOException { + DirectoryReader indexReader = DirectoryReader.open(indexDir); + IndexSearcher searcher = new IndexSearcher(indexReader); + SortedSetDocValuesReaderState state = new SortedSetDocValuesReaderState(indexReader); + + // Now user drills down on Publish Date/2010: + FacetSearchParams fsp = new FacetSearchParams(new CountFacetRequest(new CategoryPath("Author"), 10)); + DrillDownQuery q = new DrillDownQuery(fsp.indexingParams, new MatchAllDocsQuery()); + q.add(new CategoryPath("Publish Date/2010", '/')); + FacetsCollector fc = FacetsCollector.create(new SortedSetDocValuesAccumulator(fsp, state)); + searcher.search(q, fc); + + // Retrieve results + List facetResults = fc.getFacetResults(); + + indexReader.close(); + + return facetResults; + } + + /** Runs the search example. */ + public List runSearch() throws IOException { + index(); + return search(); + } + + /** Runs the drill-down example. */ + public List runDrillDown() throws IOException { + index(); + return drillDown(); + } + + /** Runs the search and drill-down examples and prints the results. */ + public static void main(String[] args) throws Exception { + System.out.println("Facet counting example:"); + System.out.println("-----------------------"); + List results = new SimpleFacetsExample().runSearch(); + for (FacetResult res : results) { + System.out.println(res); + } + + System.out.println("\n"); + System.out.println("Facet drill-down example (Publish Date/2010):"); + System.out.println("---------------------------------------------"); + results = new SimpleFacetsExample().runDrillDown(); + for (FacetResult res : results) { + System.out.println(res); + } + } + +} Property changes on: lucene/demo/src/java/org/apache/lucene/demo/facet/SimpleSortedSetFacetsExample.java ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property