+++ /dev/null
-package org.apache.lucene.demo;
-
-/**
- * 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.
- */
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.util.Date;
-
-import org.apache.lucene.analysis.Analyzer;
-import org.apache.lucene.analysis.standard.StandardAnalyzer;
-import org.apache.lucene.document.Document;
-import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.queryParser.QueryParser;
-import org.apache.lucene.search.IndexSearcher;
-import org.apache.lucene.search.Query;
-import org.apache.lucene.search.ScoreDoc;
-import org.apache.lucene.search.TopDocs;
-import org.apache.lucene.store.FSDirectory;
-import org.apache.lucene.util.Version;
-
-/** Simple command-line based search demo. */
-public class SearchFiles {
-
- private SearchFiles() {}
-
- /** Simple command-line based search demo. */
- public static void main(String[] args) throws Exception {
- String usage =
- "Usage:\tjava org.apache.lucene.demo.SearchFiles [-index dir] [-field f] [-repeat n] [-queries file] [-query string] [-raw] [-paging hitsPerPage]\n\nSee http://lucene.apache.org/java/4_0/demo.html for details.";
- if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) {
- System.out.println(usage);
- System.exit(0);
- }
-
- String index = "index";
- String field = "contents";
- String queries = null;
- int repeat = 0;
- boolean raw = false;
- String queryString = null;
- int hitsPerPage = 10;
-
- for(int i = 0;i < args.length;i++) {
- if ("-index".equals(args[i])) {
- index = args[i+1];
- i++;
- } else if ("-field".equals(args[i])) {
- field = args[i+1];
- i++;
- } else if ("-queries".equals(args[i])) {
- queries = args[i+1];
- i++;
- } else if ("-query".equals(args[i])) {
- queryString = args[i+1];
- i++;
- } else if ("-repeat".equals(args[i])) {
- repeat = Integer.parseInt(args[i+1]);
- i++;
- } else if ("-raw".equals(args[i])) {
- raw = true;
- } else if ("-paging".equals(args[i])) {
- hitsPerPage = Integer.parseInt(args[i+1]);
- if (hitsPerPage <= 0) {
- System.err.println("There must be at least 1 hit per page.");
- System.exit(1);
- }
- i++;
- }
- }
-
- IndexSearcher searcher = new IndexSearcher(FSDirectory.open(new File(index)));
- Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_31);
-
- BufferedReader in = null;
- if (queries != null) {
- in = new BufferedReader(new InputStreamReader(new FileInputStream(queries), "UTF-8"));
- } else {
- in = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));
- }
- QueryParser parser = new QueryParser(Version.LUCENE_31, field, analyzer);
- while (true) {
- if (queries == null && queryString == null) { // prompt the user
- System.out.println("Enter query: ");
- }
-
- String line = queryString != null ? queryString : in.readLine();
-
- if (line == null || line.length() == -1) {
- break;
- }
-
- line = line.trim();
- if (line.length() == 0) {
- break;
- }
-
- Query query = parser.parse(line);
- System.out.println("Searching for: " + query.toString(field));
-
- if (repeat > 0) { // repeat & time as benchmark
- Date start = new Date();
- for (int i = 0; i < repeat; i++) {
- searcher.search(query, null, 100);
- }
- Date end = new Date();
- System.out.println("Time: "+(end.getTime()-start.getTime())+"ms");
- }
-
- doPagingSearch(in, searcher, query, hitsPerPage, raw, queries == null && queryString == null);
-
- if (queryString != null) {
- break;
- }
- }
- searcher.close();
- }
-
- /**
- * This demonstrates a typical paging search scenario, where the search engine presents
- * pages of size n to the user. The user can then go to the next page if interested in
- * the next hits.
- *
- * When the query is executed for the first time, then only enough results are collected
- * to fill 5 result pages. If the user wants to page beyond this limit, then the query
- * is executed another time and all hits are collected.
- *
- */
- public static void doPagingSearch(BufferedReader in, IndexSearcher searcher, Query query,
- int hitsPerPage, boolean raw, boolean interactive) throws IOException {
-
- // Collect enough docs to show 5 pages
- TopDocs results = searcher.search(query, 5 * hitsPerPage);
- ScoreDoc[] hits = results.scoreDocs;
-
- int numTotalHits = results.totalHits;
- System.out.println(numTotalHits + " total matching documents");
-
- int start = 0;
- int end = Math.min(numTotalHits, hitsPerPage);
-
- while (true) {
- if (end > hits.length) {
- System.out.println("Only results 1 - " + hits.length +" of " + numTotalHits + " total matching documents collected.");
- System.out.println("Collect more (y/n) ?");
- String line = in.readLine();
- if (line.length() == 0 || line.charAt(0) == 'n') {
- break;
- }
-
- hits = searcher.search(query, numTotalHits).scoreDocs;
- }
-
- end = Math.min(hits.length, start + hitsPerPage);
-
- for (int i = start; i < end; i++) {
- if (raw) { // output raw format
- System.out.println("doc="+hits[i].doc+" score="+hits[i].score);
- continue;
- }
-
- Document doc = searcher.doc(hits[i].doc);
- String path = doc.get("path");
- if (path != null) {
- System.out.println((i+1) + ". " + path);
- String title = doc.get("title");
- if (title != null) {
- System.out.println(" Title: " + doc.get("title"));
- }
- } else {
- System.out.println((i+1) + ". " + "No path for this document");
- }
-
- }
-
- if (!interactive || end == 0) {
- break;
- }
-
- if (numTotalHits >= end) {
- boolean quit = false;
- while (true) {
- System.out.print("Press ");
- if (start - hitsPerPage >= 0) {
- System.out.print("(p)revious page, ");
- }
- if (start + hitsPerPage < numTotalHits) {
- System.out.print("(n)ext page, ");
- }
- System.out.println("(q)uit or enter number to jump to a page.");
-
- String line = in.readLine();
- if (line.length() == 0 || line.charAt(0)=='q') {
- quit = true;
- break;
- }
- if (line.charAt(0) == 'p') {
- start = Math.max(0, start - hitsPerPage);
- break;
- } else if (line.charAt(0) == 'n') {
- if (start + hitsPerPage < numTotalHits) {
- start+=hitsPerPage;
- }
- break;
- } else {
- int page = Integer.parseInt(line);
- if ((page - 1) * hitsPerPage < numTotalHits) {
- start = (page - 1) * hitsPerPage;
- break;
- } else {
- System.out.println("No such page");
- }
- }
- }
- if (quit) break;
- end = Math.min(numTotalHits, start + hitsPerPage);
- }
- }
- }
-}
fnp / pylucene.git / blobdiff