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package org.apache.lucene.benchmark.utils;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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import java.io.FileWriter;
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import java.io.IOException;
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import java.util.Properties;
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import org.apache.lucene.benchmark.byTask.feeds.DocMaker;
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import org.apache.lucene.benchmark.byTask.feeds.NoMoreDataException;
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import org.apache.lucene.benchmark.byTask.utils.Config;
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import org.apache.lucene.document.Document;
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* Extract the downloaded Wikipedia dump into separate files for indexing.
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public class ExtractWikipedia {
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private File outputDir;
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static public int count = 0;
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static final int BASE = 10;
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protected DocMaker docMaker;
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public ExtractWikipedia(DocMaker docMaker, File outputDir) {
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this.outputDir = outputDir;
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this.docMaker = docMaker;
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System.out.println("Deleting all files in " + outputDir);
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File[] files = outputDir.listFiles();
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for (int i = 0; i < files.length; i++) {
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public File directory(int count, File directory) {
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if (directory == null) {
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directory = outputDir;
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while (base <= count) {
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directory = new File(directory, (Integer.toString(base / BASE)));
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directory = new File(directory, (Integer.toString(count / (base / BASE))));
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return directory(count % (base / BASE), directory);
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public void create(String id, String title, String time, String body) {
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File d = directory(count++, null);
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File f = new File(d, id + ".txt");
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StringBuilder contents = new StringBuilder();
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contents.append(time);
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contents.append("\n\n");
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contents.append(title);
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contents.append("\n\n");
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contents.append(body);
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contents.append("\n");
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FileWriter writer = new FileWriter(f);
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writer.write(contents.toString());
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} catch (IOException ioe) {
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throw new RuntimeException(ioe);
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public void extract() throws Exception {
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System.out.println("Starting Extraction");
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long start = System.currentTimeMillis();
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while ((doc = docMaker.makeDocument()) != null) {
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create(doc.get(DocMaker.ID_FIELD), doc.get(DocMaker.TITLE_FIELD), doc
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.get(DocMaker.DATE_FIELD), doc.get(DocMaker.BODY_FIELD));
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} catch (NoMoreDataException e) {
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long finish = System.currentTimeMillis();
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System.out.println("Extraction took " + (finish - start) + " ms");
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public static void main(String[] args) throws Exception {
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File wikipedia = null;
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File outputDir = new File("./enwiki");
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boolean keepImageOnlyDocs = true;
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for (int i = 0; i < args.length; i++) {
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String arg = args[i];
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if (arg.equals("--input") || arg.equals("-i")) {
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wikipedia = new File(args[i + 1]);
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} else if (arg.equals("--output") || arg.equals("-o")) {
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outputDir = new File(args[i + 1]);
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} else if (arg.equals("--discardImageOnlyDocs") || arg.equals("-d")) {
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keepImageOnlyDocs = false;
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DocMaker docMaker = new DocMaker();
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Properties properties = new Properties();
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properties.setProperty("content.source", "org.apache.lucene.benchmark.byTask.feeds.EnwikiContentSource");
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properties.setProperty("docs.file", wikipedia.getAbsolutePath());
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properties.setProperty("content.source.forever", "false");
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properties.setProperty("keep.image.only.docs", String.valueOf(keepImageOnlyDocs));
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docMaker.setConfig(new Config(properties));
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docMaker.resetInputs();
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if (wikipedia.exists()) {
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System.out.println("Extracting Wikipedia to: " + outputDir + " using EnwikiContentSource");
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ExtractWikipedia extractor = new ExtractWikipedia(docMaker, outputDir);
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private static void printUsage() {
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System.err.println("Usage: java -cp <...> org.apache.lucene.benchmark.utils.ExtractWikipedia --input|-i <Path to Wikipedia XML file> " +
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"[--output|-o <Output Path>] [--discardImageOnlyDocs|-d]");
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System.err.println("--discardImageOnlyDocs tells the extractor to skip Wiki docs that contain only images");
b'\\ No newline at end of file'