+++ /dev/null
-package org.apache.lucene.facet.example.multiCL;
-
-import java.util.List;
-
-import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.index.Term;
-import org.apache.lucene.search.IndexSearcher;
-import org.apache.lucene.search.Query;
-import org.apache.lucene.search.TermQuery;
-import org.apache.lucene.search.TopScoreDocCollector;
-import org.apache.lucene.store.Directory;
-
-import org.apache.lucene.search.MultiCollector;
-import org.apache.lucene.facet.example.ExampleUtils;
-import org.apache.lucene.facet.example.simple.SimpleUtils;
-import org.apache.lucene.facet.index.params.FacetIndexingParams;
-import org.apache.lucene.facet.search.FacetsCollector;
-import org.apache.lucene.facet.search.params.CountFacetRequest;
-import org.apache.lucene.facet.search.params.FacetSearchParams;
-import org.apache.lucene.facet.search.results.FacetResult;
-import org.apache.lucene.facet.taxonomy.CategoryPath;
-import org.apache.lucene.facet.taxonomy.TaxonomyReader;
-import org.apache.lucene.facet.taxonomy.lucene.LuceneTaxonomyReader;
-
-/**
- * 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.
- */
-
-/**
- * MultiSearcher searches index with facets over an index with multiple
- * category lists.
- *
- * @lucene.experimental
- */
-public class MultiCLSearcher {
-
- /**
- * Search an index with facets.
- *
- * @param indexDir
- * Directory of the search index.
- * @param taxoDir
- * Directory of the taxonomy index.
- * @throws Exception
- * on error (no detailed exception handling here for sample
- * simplicity
- * @return facet results
- */
- public static List<FacetResult> searchWithFacets(Directory indexDir,
- Directory taxoDir, FacetIndexingParams iParams) throws Exception {
-
- // prepare index reader and taxonomy.
- IndexReader indexReader = IndexReader.open(indexDir);
- TaxonomyReader taxo = new LuceneTaxonomyReader(taxoDir);
-
- // Get results
- List<FacetResult> results = searchWithFacets(indexReader, taxo, iParams);
-
- // we're done, close the index reader and the taxonomy.
- indexReader.close();
- taxo.close();
- return results;
- }
-
- public static List<FacetResult> searchWithFacets(IndexReader indexReader,
- TaxonomyReader taxo, FacetIndexingParams iParams) throws Exception {
- // prepare searcher to search against
- IndexSearcher searcher = new IndexSearcher(indexReader);
-
- // faceted search is working in 2 steps:
- // 1. collect matching documents
- // 2. aggregate facets for collected documents and
- // generate the requested faceted results from the aggregated facets
-
- // step 1: create a query for finding matching documents for which we
- // accumulate facets
- Query q = new TermQuery(new Term(SimpleUtils.TEXT, "Quis"));
- ExampleUtils.log("Query: " + q);
-
- TopScoreDocCollector topDocsCollector = TopScoreDocCollector.create(10,
- true);
-
- // Faceted search parameters indicate which facets are we interested in
- FacetSearchParams facetSearchParams = new FacetSearchParams(iParams);
- facetSearchParams.addFacetRequest(new CountFacetRequest(
- new CategoryPath("5"), 10));
- facetSearchParams.addFacetRequest(new CountFacetRequest(
- new CategoryPath("5", "5"), 10));
- facetSearchParams.addFacetRequest(new CountFacetRequest(
- new CategoryPath("6", "2"), 10));
-
- // Facets collector is the simplest interface for faceted search.
- // It provides faceted search functions that are sufficient to many
- // application,
- // although it is insufficient for tight control on faceted search
- // behavior - in those
- // situations other, more low-level interfaces are available, as
- // demonstrated in other search examples.
- FacetsCollector facetsCollector = new FacetsCollector(
- facetSearchParams, indexReader, taxo);
-
- // perform documents search and facets accumulation
- searcher.search(q, MultiCollector.wrap(topDocsCollector, facetsCollector));
-
- // Obtain facets results and print them
- List<FacetResult> res = facetsCollector.getFacetResults();
-
- int i = 0;
- for (FacetResult facetResult : res) {
- ExampleUtils.log("Res " + (i++) + ": " + facetResult);
- }
- return res;
- }
-
-}
fnp / pylucene.git / blobdiff