List of usage examples for org.apache.lucene.search IndexSearcher search
public <C extends Collector, T> T search(Query query, CollectorManager<C, T> collectorManager) throws IOException
From source file:GUIFrame.java
public int SearchResults(PorterStemAnalyzer Analyzer, Directory Index, String userInput, DefaultListModel DocList) throws ParseException, IOException { // The query//from w w w .j a va 2 s. c o m userInput = userInput.replace("\"", ""); Query q = new QueryParser(Version.LATEST, "summary", Analyzer).parse(userInput); // The search int hitsPerPage = 20; // return 20 top documents IndexReader indoReader = DirectoryReader.open(Index); IndexSearcher indoSearcher = new IndexSearcher(indoReader); TopScoreDocCollector docCollector = TopScoreDocCollector.create(hitsPerPage, true); indoSearcher.search(q, docCollector); ScoreDoc[] hits = docCollector.topDocs().scoreDocs; // Copy results to list models for (int i = 0; i < hits.length; ++i) { int docId = hits[i].doc; Document d = indoSearcher.doc(docId); DocList.addElement(d.get("docID")); SumListModel.addElement(d.get("summary")); } GetTerms(Index, Analyzer, "summary", userInput); return hits.length; }
From source file:SearchFiles.java
License:Apache License
/** 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/core/4_1_0/demo/ for details."; if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) { System.out.println(usage); System.exit(0);//from w w w . ja v a 2 s. com } 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++; } } IndexReader reader = DirectoryReader.open(FSDirectory.open(Paths.get(index))); IndexSearcher searcher = new IndexSearcher(reader); Analyzer analyzer = new StandardAnalyzer(); BufferedReader in = null; if (queries != null) { in = Files.newBufferedReader(Paths.get(queries), StandardCharsets.UTF_8); } else { in = new BufferedReader(new InputStreamReader(System.in, StandardCharsets.UTF_8)); } QueryParser parser = new QueryParser(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, 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; } } reader.close(); }
From source file:SearchFiles.java
License:Apache License
/** * 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.// ww w . ja v a 2s. co m * * 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) { String title = doc.get("title"); if (title != null && !title.equals("")) { System.out.println((i + 1) + ". " + doc.get("title")); System.out.println(" " + path); } else { System.out.println((i + 1) + ". null"); System.out.println(" " + path); } } 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); } } }
From source file:MyServlet.java
private void gotoSearch(PrintWriter out, HttpServletRequest request, HttpServletResponse response) { try {//from w ww.java2 s . co m // Text to search String querystr = request.getParameter("keyword"); log.addHistory(querystr); // The \"title\" arg specifies the default field to use when no field is explicitly specified in the query Query q = new QueryParser("Classes", analyzer).parse(querystr); // Searching code int hitsPerPage = 10; IndexReader reader = DirectoryReader.open(index); IndexSearcher searcher = new IndexSearcher(reader); TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage); searcher.search(q, collector); ScoreDoc[] hits = collector.topDocs().scoreDocs; // Code to display the results of search //out.println("Found " + hits.length + " Classes Matching your Requirement"); courseList = new ArrayList(); for (int i = 0; i < hits.length; ++i) { int docId = hits[i].doc; Document d = searcher.doc(docId); Course course = new Course(d.get("Number"), d.get("Classes"), d.get("Time"), d.get("Department")); //out.println((i + 1) + ". " + d.get("Number")+ d.get("Classes") ); courseList.add(course); } request.setAttribute("course", courseList); RequestDispatcher de = request.getRequestDispatcher("/table.jsp"); de.forward(request, response); // reader can only be closed when there is no need to access the documents any more reader.close(); } catch (Exception e) { System.out.println(e.getMessage()); } }
From source file:ContentBasedAnalysis.java
License:Apache License
private static int findDocId(IndexSearcher searcher, String filename) throws Exception { Term t = new Term("path", filename); Query q = new TermQuery(t); TopDocs td = searcher.search(q, 2); if (td.totalHits < 1) return -1; else//from w w w. j av a2s. c o m return td.scoreDocs[0].doc; }
From source file:IrqaQuery.java
License:Apache License
public static List<Document> query(String index, String stoppath, String question, int numResult, String sim) throws Exception { IndexReader reader = DirectoryReader.open(FSDirectory.open(Paths.get(index))); IndexSearcher searcher = new IndexSearcher(reader); Analyzer analyzer = new EnglishAnalyzer(StopFilter.makeStopSet(mygetStopwords(stoppath))); if (sim.equals("TFIDF")) searcher.setSimilarity(new ClassicSimilarity()); else if (sim.equals("BM25")) searcher.setSimilarity(new BM25Similarity()); else//from w w w. j a v a 2s. com searcher.setSimilarity(new BM25Similarity()); String field = "contents"; QueryParser parser = new QueryParser(field, analyzer); Query query = parser.parse(parser.escape(question)); TopDocs results = searcher.search(query, numResult); ScoreDoc[] hits = results.scoreDocs; List<Document> docs = new ArrayList<Document>(); int numTotalHits = results.totalHits; // System.out.println(numTotalHits + " total matching documents"); int end = Math.min(numTotalHits, numResult); String searchResult = ""; // System.out.println("Only results 1 - " + hits.length); for (int i = 0; i < end; i++) { Document doc = searcher.doc(hits[i].doc); docs.add(doc); } return docs; }
From source file:Get_Top_Documents_Based_on_Lucene.java
License:Apache License
/** * 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./* w w w .ja v a 2s. com*/ * * 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, Writer writer, IndexSearcher searcher, Query query, int hitsPerPage, boolean raw, boolean interactive) throws IOException { // Collect enough docs to show 5 pages TopDocs results = searcher.search(query, hitsPerPage); ScoreDoc[] hits = results.scoreDocs; System.out.println("hits.length: " + Integer.toString(hits.length)); for (int i = 0; i < hits.length; i++) { Document doc = searcher.doc(hits[i].doc); String path = doc.get("path"); writer.write(path + ","); //System.out.println("Path: " + path); //String title = doc.get("title"); //System.out.println("Title: " + title); } //for writer.write("\n"); /* 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); } } */ }
From source file:QueryLuceneIndex.java
License:Apache License
/** * 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./*from w ww. j a v a 2s.com*/ * * 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 title = doc.get("title"); if (title != null) { System.out.println((i + 1) + ". " + title); } else { System.out.println((i + 1) + ". " + "No title 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); } } }
From source file:SearchFiles11.java
License:Apache License
/** 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/core/4_1_0/demo/ for details."; if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) { System.out.println(usage); System.exit(0);//w w w. j a v a 2s . com } 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++; } } IndexReader reader = DirectoryReader.open(FSDirectory.open(Paths.get(index))); IndexSearcher searcher = new IndexSearcher(reader); Analyzer analyzer = new StandardAnalyzer(); StandardQueryParser queryParserHelper = new StandardQueryParser(); Query query = queryParserHelper.parse( "Physical OR tests OR for OR shoulder OR impingements OR and OR local OR lesions OR of OR bursa, OR tendon OR labrum OR that OR may OR accompany OR impingement", field); TopDocs results = searcher.search(query, 100); Date end = new Date(); ScoreDoc[] hits = results.scoreDocs; int numTotalHits = results.totalHits; String FILENAME = "/home/devil/research/CLEF/ehealth/task2/dataset/pubmed11.res"; int i = 1; try (BufferedWriter bw = new BufferedWriter(new FileWriter(FILENAME))) { String content = ""; for (ScoreDoc h : hits) { Document doc = searcher.doc(h.doc); String path = doc.get("path"); String[] path_words = path.split("/"); System.out.println(path_words[path_words.length - 1] + " score=" + h.score); content = "CD007427 " + "NF " + path_words[path_words.length - 1] + " " + i++ + " " + h.score + " pubmed\n"; bw.write(content); } } catch (IOException e) { e.printStackTrace(); } //doPagingSearch(in, searcher, bQuery.build(), hitsPerPage, raw, queries == null && queryString == null); reader.close(); }
From source file:SearchFiles11.java
License:Apache License
/** * 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./*from w ww .ja v a 2 s . com*/ * * 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); } } }