--- /dev/null
+package org.apache.lucene.facet.example.simple;
+
+import java.util.List;
+
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.store.RAMDirectory;
+
+import org.apache.lucene.facet.example.ExampleResult;
+import org.apache.lucene.facet.example.ExampleUtils;
+import org.apache.lucene.facet.search.results.FacetResult;
+import org.apache.lucene.facet.taxonomy.TaxonomyReader;
+import org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader;
+
+/**
+ * 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.
+ */
+
+/**
+ * Driver for the simple sample.
+ *
+ * @lucene.experimental
+ */
+public class SimpleMain {
+
+ /**
+ * Driver for the simple sample.
+ * @throws Exception on error (no detailed exception handling here for sample simplicity
+ */
+ public static void main(String[] args) throws Exception {
+ new SimpleMain().runSimple();
+ new SimpleMain().runDrillDown().getFacetResults();
+ ExampleUtils.log("DONE");
+ }
+
+ public ExampleResult runSimple() throws Exception {
+ // create Directories for the search index and for the taxonomy index
+ Directory indexDir = new RAMDirectory();
+ Directory taxoDir = new RAMDirectory();
+
+ // index the sample documents
+ ExampleUtils.log("index the sample documents...");
+ SimpleIndexer.index(indexDir, taxoDir);
+
+ // open readers
+ TaxonomyReader taxo = new DirectoryTaxonomyReader(taxoDir);
+ IndexReader indexReader = IndexReader.open(indexDir, true);
+
+ ExampleUtils.log("search the sample documents...");
+ List<FacetResult> facetRes = SimpleSearcher.searchWithFacets(indexReader, taxo);
+
+ // close readers
+ taxo.close();
+ indexReader.close();
+
+ ExampleResult res = new ExampleResult();
+ res.setFacetResults(facetRes);
+ return res;
+ }
+
+ public ExampleResult runDrillDown() throws Exception {
+ // create Directories for the search index and for the taxonomy index
+ Directory indexDir = new RAMDirectory();
+ Directory taxoDir = new RAMDirectory();
+
+ // index the sample documents
+ ExampleUtils.log("index the sample documents...");
+ SimpleIndexer.index(indexDir, taxoDir);
+
+ // open readers
+ TaxonomyReader taxo = new DirectoryTaxonomyReader(taxoDir);
+ IndexReader indexReader = IndexReader.open(indexDir, true);
+
+ ExampleUtils.log("search the sample documents...");
+ List<FacetResult> facetRes = SimpleSearcher.searchWithDrillDown(indexReader, taxo);
+
+ // close readers
+ taxo.close();
+ indexReader.close();
+
+ ExampleResult res = new ExampleResult();
+ res.setFacetResults(facetRes);
+ return res;
+ }
+
+}