--- /dev/null
+package org.apache.lucene.facet.example.multiCL;
+
+import java.util.List;
+import java.util.Random;
+
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.document.Field.Index;
+import org.apache.lucene.document.Field.Store;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.index.IndexWriterConfig;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.index.IndexWriterConfig.OpenMode;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.store.RAMDirectory;
+
+import org.apache.lucene.facet.example.ExampleUtils;
+import org.apache.lucene.facet.example.simple.SimpleUtils;
+import org.apache.lucene.facet.index.CategoryDocumentBuilder;
+import org.apache.lucene.facet.index.params.CategoryListParams;
+import org.apache.lucene.facet.index.params.FacetIndexingParams;
+import org.apache.lucene.facet.index.params.PerDimensionIndexingParams;
+import org.apache.lucene.facet.taxonomy.CategoryPath;
+import org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyWriter;
+
+/**
+ * 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.
+ */
+
+/**
+ * Sample indexer creates an index, and adds to it sample documents and facets
+ * with multiple CategoryLists specified for different facets, so there are different
+ * category lists for different facets.
+ *
+ * @lucene.experimental
+ */
+public class MultiCLIndexer {
+
+ // Number of documents to index
+ public static int NUM_DOCS = 100;
+ // Number of facets to add per document
+ public static int NUM_FACETS_PER_DOC = 10;
+ // Number of tokens in title
+ public static int TITLE_LENGTH = 5;
+ // Number of tokens in text
+ public static int TEXT_LENGTH = 100;
+
+ // Lorum ipsum to use as content - this will be tokenized and used for document
+ // titles/text.
+ static String words = "Sed ut perspiciatis unde omnis iste natus error sit "
+ + "voluptatem accusantium doloremque laudantium totam rem aperiam "
+ + "eaque ipsa quae ab illo inventore veritatis et quasi architecto "
+ + "beatae vitae dicta sunt explicabo Nemo enim ipsam voluptatem "
+ + "quia voluptas sit aspernatur aut odit aut fugit sed quia consequuntur "
+ + "magni dolores eos qui ratione voluptatem sequi nesciunt Neque porro "
+ + "quisquam est qui dolorem ipsum quia dolor sit amet consectetur adipisci velit "
+ + "sed quia non numquam eius modi tempora incidunt ut labore et dolore "
+ + "magnam aliquam quaerat voluptatem Ut enim ad minima veniam "
+ + "quis nostrum exercitationem ullam corporis suscipit laboriosam "
+ + "nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure"
+ + "reprehenderit qui in ea voluptate velit esse quam nihil molestiae "
+ + "consequatur vel illum qui dolorem eum fugiat quo voluptas nulla pariatur";
+ // PerDimensionIndexingParams for multiple category lists
+ public static PerDimensionIndexingParams MULTI_IPARAMS = new PerDimensionIndexingParams();
+
+ // Initialize PerDimensionIndexingParams
+ static {
+ MULTI_IPARAMS.addCategoryListParams(new CategoryPath("0"),
+ new CategoryListParams(new Term("$Digits", "Zero")));
+ MULTI_IPARAMS.addCategoryListParams(new CategoryPath("1"),
+ new CategoryListParams(new Term("$Digits", "One")));
+ MULTI_IPARAMS.addCategoryListParams(new CategoryPath("2"),
+ new CategoryListParams(new Term("$Digits", "Two")));
+ MULTI_IPARAMS.addCategoryListParams(new CategoryPath("3"),
+ new CategoryListParams(new Term("$Digits", "Three")));
+ MULTI_IPARAMS.addCategoryListParams(new CategoryPath("4"),
+ new CategoryListParams(new Term("$Digits", "Four")));
+ MULTI_IPARAMS.addCategoryListParams(new CategoryPath("5"),
+ new CategoryListParams(new Term("$Digits", "Five")));
+ }
+
+ /**
+ * Create an index, and adds to it sample documents and facets.
+ * @param indexDir Directory in which the index should be created.
+ * @param taxoDir Directory in which the taxonomy index should be created.
+ * @throws Exception on error (no detailed exception handling here for sample simplicity
+ */
+ public static void index(Directory indexDir, Directory taxoDir)
+ throws Exception {
+
+ Random random = new Random(2003);
+
+ String[] docTitles = new String[NUM_DOCS];
+ String[] docTexts = new String[NUM_DOCS];
+ CategoryPath[][] cPaths = new CategoryPath[NUM_DOCS][NUM_FACETS_PER_DOC];
+
+ String[] tokens = words.split(" ");
+ for (int docNum = 0; docNum < NUM_DOCS; docNum++) {
+ String title = "";
+ String text = "";
+ for (int j = 0; j < TITLE_LENGTH; j++) {
+ title = title + tokens[random.nextInt(tokens.length)] + " ";
+ }
+ docTitles[docNum] = title;
+
+ for (int j = 0; j < TEXT_LENGTH; j++) {
+ text = text + tokens[random.nextInt(tokens.length)] + " ";
+ }
+ docTexts[docNum] = text;
+
+ for (int facetNum = 0; facetNum < NUM_FACETS_PER_DOC; facetNum++) {
+ cPaths[docNum][facetNum] = new CategoryPath(Integer
+ .toString(random.nextInt(7)), Integer.toString(random.nextInt(10)));
+ }
+ }
+ index(indexDir, taxoDir, MULTI_IPARAMS, docTitles, docTexts, cPaths);
+ }
+
+ /**
+ * More advanced method for specifying custom indexing params, doc texts,
+ * doc titles and category paths.
+ */
+ public static void index(Directory indexDir, Directory taxoDir,
+ FacetIndexingParams iParams, String[] docTitles,
+ String[] docTexts, CategoryPath[][] cPaths) throws Exception {
+ // create and open an index writer
+ IndexWriter iw = new IndexWriter(indexDir, new IndexWriterConfig(
+ ExampleUtils.EXAMPLE_VER, SimpleUtils.analyzer).setOpenMode(OpenMode.CREATE));
+ // create and open a taxonomy writer
+ DirectoryTaxonomyWriter taxo = new DirectoryTaxonomyWriter(taxoDir, OpenMode.CREATE);
+ index(iw, taxo, iParams, docTitles, docTexts, cPaths);
+ }
+
+ /**
+ * More advanced method for specifying custom indexing params, doc texts,
+ * doc titles and category paths.
+ * <p>
+ * Create an index, and adds to it sample documents and facets.
+ * @throws Exception
+ * on error (no detailed exception handling here for sample
+ * simplicity
+ */
+ public static void index(IndexWriter iw, DirectoryTaxonomyWriter taxo,
+ FacetIndexingParams iParams, String[] docTitles,
+ String[] docTexts, CategoryPath[][] cPaths) throws Exception {
+
+ // loop over sample documents
+ int nDocsAdded = 0;
+ int nFacetsAdded = 0;
+ for (int docNum = 0; docNum < SimpleUtils.docTexts.length; docNum++) {
+ List<CategoryPath> facetList = SimpleUtils.categoryPathArrayToList(cPaths[docNum]);
+
+ // we do not alter indexing parameters!
+ // a category document builder will add the categories to a document
+ // once build() is called
+ CategoryDocumentBuilder categoryDocBuilder = new CategoryDocumentBuilder(
+ taxo, iParams).setCategoryPaths(facetList);
+
+ // create a plain Lucene document and add some regular Lucene fields
+ // to it
+ Document doc = new Document();
+ doc.add(new Field(SimpleUtils.TITLE, docTitles[docNum], Store.YES, Index.ANALYZED));
+ doc.add(new Field(SimpleUtils.TEXT, docTexts[docNum], Store.NO, Index.ANALYZED));
+
+ // finally add the document to the index
+ categoryDocBuilder.build(doc);
+ iw.addDocument(doc);
+
+ nDocsAdded++;
+ nFacetsAdded += facetList.size();
+ }
+
+ // commit changes.
+ // we commit changes to the taxonomy index prior to committing them to
+ // the search index.
+ // this is important, so that all facets referred to by documents in the
+ // search index
+ // will indeed exist in the taxonomy index.
+ taxo.commit();
+ iw.commit();
+
+ // close the taxonomy index and the index - all modifications are
+ // now safely in the provided directories: indexDir and taxoDir.
+ taxo.close();
+ iw.close();
+
+ ExampleUtils.log("Indexed " + nDocsAdded + " documents with overall "
+ + nFacetsAdded + " facets.");
+ }
+
+ public static void main(String[] args) throws Exception {
+ index(new RAMDirectory(), new RAMDirectory());
+ }
+
+}
fnp / pylucene.git / blobdiff