1 package org.apache.lucene.facet.example.association;
5 import org.apache.lucene.index.IndexReader;
6 import org.apache.lucene.store.Directory;
8 import org.apache.lucene.facet.example.simple.SimpleSearcher;
9 import org.apache.lucene.facet.search.params.association.AssociationFloatSumFacetRequest;
10 import org.apache.lucene.facet.search.params.association.AssociationIntSumFacetRequest;
11 import org.apache.lucene.facet.search.results.FacetResult;
12 import org.apache.lucene.facet.taxonomy.CategoryPath;
13 import org.apache.lucene.facet.taxonomy.TaxonomyReader;
14 import org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader;
17 * Licensed to the Apache Software Foundation (ASF) under one or more
18 * contributor license agreements. See the NOTICE file distributed with
19 * this work for additional information regarding copyright ownership.
20 * The ASF licenses this file to You under the Apache License, Version 2.0
21 * (the "License"); you may not use this file except in compliance with
22 * the License. You may obtain a copy of the License at
24 * http://www.apache.org/licenses/LICENSE-2.0
26 * Unless required by applicable law or agreed to in writing, software
27 * distributed under the License is distributed on an "AS IS" BASIS,
28 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
29 * See the License for the specific language governing permissions and
30 * limitations under the License.
34 * AssociationSearcher searches index with facets, evaluating the facets with
35 * their associated $int value
37 * @lucene.experimental
39 public class AssociationSearcher {
41 /** Search an index with a sum of int-association. */
42 public static List<FacetResult> searchSumIntAssociation(Directory indexDir,
43 Directory taxoDir) throws Exception {
44 // prepare index reader
45 IndexReader indexReader = IndexReader.open(indexDir);
46 TaxonomyReader taxo = new DirectoryTaxonomyReader(taxoDir);
48 AssociationIntSumFacetRequest facetRequest = new AssociationIntSumFacetRequest(
49 new CategoryPath("tags"), 10);
51 List<FacetResult> res = SimpleSearcher.searchWithRequest(indexReader, taxo,
52 AssociationUtils.assocIndexingParams, facetRequest);
61 /** Search an index with a sum of float-association. */
62 public static List<FacetResult> searchSumFloatAssociation(Directory indexDir,
63 Directory taxoDir) throws Exception {
64 // prepare index reader
65 IndexReader indexReader = IndexReader.open(indexDir);
66 TaxonomyReader taxo = new DirectoryTaxonomyReader(taxoDir);
68 AssociationFloatSumFacetRequest facetRequest = new AssociationFloatSumFacetRequest(
69 new CategoryPath("genre"), 10);
71 List<FacetResult> res = SimpleSearcher.searchWithRequest(indexReader, taxo,
72 AssociationUtils.assocIndexingParams, facetRequest);