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:com.liang.minisearch.domain.search.Engine.java
public List<QueryDocument> search(String queryString) throws ParseException, IOException { List<QueryDocument> results = new ArrayList<>(); IndexSearcher searcher = new IndexSearcher(this.getReader()); // Parse user input query Query query = new QueryParser(FIELD_CONTENT, new StandardAnalyzer()).parse(queryString); // Get top n matching documents TopDocs topDocs = searcher.search(query, NUM_TOP_RESULT); ScoreDoc[] hits = topDocs.scoreDocs; for (ScoreDoc hit : hits) { Document doc = searcher.doc(hit.doc); QueryDocument result = new QueryDocument(); result.setUrl(doc.get(FIELD_URL)); result.setScore(hit.score);//from w w w . j a v a 2s. co m results.add(result); } return results; }
From source file:com.liferay.portal.search.lucene.dump.DumpIndexDeletionPolicyTest.java
License:Open Source License
private void _assertHits(Directory directory, String fieldName, String fieldValue, int totalHits) throws Exception { IndexSearcher indexSearcher = new IndexSearcher(directory); Term term = new Term(fieldName, fieldValue); TermQuery termQuery = new TermQuery(term); TopDocs topDocs = indexSearcher.search(termQuery, 1); assertEquals(totalHits, topDocs.totalHits); }
From source file:com.liferay.portal.search.lucene.dump.IndexAccessorImplTest.java
License:Open Source License
private void _assertHits(String key, boolean expectHit) throws Exception { IndexSearcher indexSearcher = new IndexSearcher(_indexAccessorImpl.getLuceneDir()); for (int i = 0; i < _documentsCount * 2; i++) { Term term = new Term("name", key + i); TermQuery termQuery = new TermQuery(term); TopDocs topDocs = indexSearcher.search(termQuery, 1); if (i < _documentsCount) { if (expectHit) { assertEquals(1, topDocs.totalHits); } else { assertEquals(0, topDocs.totalHits); }//w ww. ja v a 2 s . c o m } else { assertEquals(0, topDocs.totalHits); } } indexSearcher.close(); }
From source file:com.lin.studytest.lucene.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 va 2 s .c o m } String index = "D:\\software\\lucene\\testdata\\indexpath"; String field = "contents"; String queries = null; int repeat = 100; boolean raw = false; String queryString = ""; 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:com.lin.studytest.lucene.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.//from w ww . j a va 2 s . c om * * 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); } } }
From source file:com.lithium.flow.filer.lucene.LuceneFiler.java
License:Apache License
@Nullable private List<Record> search(@Nonnull Term term) throws IOException { long time = System.currentTimeMillis(); manager.maybeRefresh();/*from w ww . j a v a 2 s . c om*/ IndexSearcher searcher = manager.acquire(); try { TopDocs topDocs = searcher.search(new TermQuery(term), Integer.MAX_VALUE); if (topDocs.totalHits > 0) { List<Record> records = Lists.newArrayList(); for (ScoreDoc scoreDoc : topDocs.scoreDocs) { Document doc = searcher.doc(scoreDoc.doc); RecordDoc recordDoc = RecordDoc.create(doc); records.add(recordDoc.getRecord()); if (maxAge > -1 && time > recordDoc.getIndexTime() + maxAge) { return null; } } return records; } } finally { manager.release(searcher); } return null; }
From source file:com.lorelib.analyzer.sample.LuceneIndexAndSearchDemo.java
License:Apache License
/** * // w w w . j a v a 2 s. c o m * ??? * @param args */ public static void main(String[] args) { //Lucene Document?? String fieldName = "text"; // String text = "IK Analyzer???????"; //IKAnalyzer? Analyzer analyzer = new IKAnalyzer(true); Directory directory = null; IndexWriter iwriter = null; IndexReader ireader = null; IndexSearcher isearcher = null; try { // directory = new RAMDirectory(); //?IndexWriterConfig IndexWriterConfig iwConfig = new IndexWriterConfig(analyzer); iwConfig.setOpenMode(OpenMode.CREATE_OR_APPEND); iwriter = new IndexWriter(directory, iwConfig); // Document doc = new Document(); doc.add(new StringField("ID", "10000", Field.Store.YES)); doc.add(new TextField(fieldName, text, Field.Store.YES)); iwriter.addDocument(doc); iwriter.close(); //?********************************** //? ireader = DirectoryReader.open(directory); isearcher = new IndexSearcher(ireader); String keyword = "?"; //QueryParser?Query QueryParser qp = new QueryParser(fieldName, analyzer); qp.setDefaultOperator(QueryParser.AND_OPERATOR); Query query = qp.parse(keyword); System.out.println("Query = " + query); //?5? TopDocs topDocs = isearcher.search(query, 5); System.out.println("" + topDocs.totalHits); // ScoreDoc[] scoreDocs = topDocs.scoreDocs; for (int i = 0; i < topDocs.totalHits; i++) { Document targetDoc = isearcher.doc(scoreDocs[i].doc); System.out.println("" + targetDoc.toString()); } } catch (CorruptIndexException e) { e.printStackTrace(); } catch (LockObtainFailedException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (ParseException e) { e.printStackTrace(); } finally { if (ireader != null) { try { ireader.close(); } catch (IOException e) { e.printStackTrace(); } } if (directory != null) { try { directory.close(); } catch (IOException e) { e.printStackTrace(); } } } }
From source file:com.lucene.index.test.IKAnalyzerdemo.java
License:Apache License
/** * //from w ww. j a v a2 s .c o m * ??? * @param args */ public static void main(String[] args) { //Lucene Document?? String fieldName = "text"; // String text1 = "oracle,?"; String text2 = "?"; String text3 = "?"; //IKAnalyzer? Analyzer analyzer = new IKAnalyzer(); Directory directory1 = null; Directory directory2 = null; IndexWriter iwriter1 = null; IndexWriter iwriter2 = null; IndexReader ireader1 = null; IndexReader ireader2 = null; IndexSearcher isearcher = null; try { // directory1 = new RAMDirectory(); directory2 = new RAMDirectory(); //?IndexWriterConfig IndexWriterConfig iwConfig1 = new IndexWriterConfig(analyzer); iwConfig1.setOpenMode(OpenMode.CREATE); IndexWriterConfig iwConfig2 = new IndexWriterConfig(analyzer); iwConfig2.setOpenMode(OpenMode.CREATE); iwriter1 = new IndexWriter(directory1, iwConfig1); iwriter2 = new IndexWriter(directory2, iwConfig2); // Document doc1 = new Document(); doc1.add(new StringField("ID", "10000", Field.Store.YES)); doc1.add(new TextField("text1", text1, Field.Store.YES)); iwriter1.addDocument(doc1); Document doc2 = new Document(); doc2.add(new StringField("ID", "10001", Field.Store.YES)); doc2.add(new TextField("text2", text2, Field.Store.YES)); iwriter2.addDocument(doc2); iwriter1.close(); iwriter2.close(); //?********************************** //? ireader1 = DirectoryReader.open(directory1); ireader2 = DirectoryReader.open(directory2); IndexReader[] mreader = { ireader1, ireader2 }; MultiReader multiReader = new MultiReader(mreader); isearcher = new IndexSearcher(multiReader); String keyword = "?"; //QueryParser?Query String[] fields = { "text1", "text2" }; Map<String, Float> boosts = new HashMap<String, Float>(); boosts.put("text1", 5.0f); boosts.put("text2", 2.0f); /**MultiFieldQueryParser??? * */ MultiFieldQueryParser parser = new MultiFieldQueryParser(fields, analyzer, boosts); Query query = parser.parse(keyword); System.out.println("Query = " + query); //?5? TopDocs topDocs = isearcher.search(query, 5); System.out.println("" + topDocs.totalHits); // ScoreDoc[] scoreDocs = topDocs.scoreDocs; for (int i = 0; i < topDocs.totalHits; i++) { Document targetDoc = isearcher.doc(scoreDocs[i].doc); System.out.println("" + targetDoc.toString()); } } catch (CorruptIndexException e) { e.printStackTrace(); } catch (LockObtainFailedException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (ParseException e) { e.printStackTrace(); } finally { if (ireader1 != null) { try { ireader1.close(); ireader2.close(); } catch (IOException e) { e.printStackTrace(); } } if (directory1 != null) { try { directory1.close(); directory2.close(); } catch (IOException e) { e.printStackTrace(); } } } }
From source file:com.lucene.index.test.IKAnalyzerdemoMutilField.java
License:Apache License
/** * //from w w w. j a v a 2s. c o m * ??? * @param args */ public static void main(String[] args) { //Lucene Document?? String fieldName = "text"; // String text1 = "oracle?"; String text2 = "?"; String text3 = "?"; //IKAnalyzer? Analyzer analyzer = new IKAnalyzer(); Directory directory = null; IndexWriter iwriter = null; IndexReader ireader = null; IndexSearcher isearcher = null; try { // directory = new RAMDirectory(); //?IndexWriterConfig IndexWriterConfig iwConfig = new IndexWriterConfig(analyzer); iwConfig.setOpenMode(OpenMode.CREATE_OR_APPEND); iwriter = new IndexWriter(directory, iwConfig); // Document doc1 = new Document(); doc1.add(new StringField("ID", "10000", Field.Store.YES)); doc1.add(new TextField(fieldName, text1, Field.Store.YES)); iwriter.addDocument(doc1); Document doc2 = new Document(); doc2.add(new StringField("ID", "10000", Field.Store.YES)); doc2.add(new TextField(fieldName, text2, Field.Store.YES)); iwriter.addDocument(doc2); Document doc3 = new Document(); doc3.add(new StringField("ID", "10000", Field.Store.YES)); doc3.add(new TextField(fieldName, text3, Field.Store.YES)); iwriter.addDocument(doc3); iwriter.close(); //?********************************** //? ireader = DirectoryReader.open(directory); isearcher = new IndexSearcher(ireader); String keyword = "?"; //QueryParser?Query QueryParser qp = new QueryParser(fieldName, analyzer); qp.setDefaultOperator(QueryParser.AND_OPERATOR); Query query = qp.parse(keyword); System.out.println("Query = " + query); //?5? TopDocs topDocs = isearcher.search(query, 5); System.out.println("" + topDocs.totalHits); // ScoreDoc[] scoreDocs = topDocs.scoreDocs; for (int i = 0; i < topDocs.totalHits; i++) { Document targetDoc = isearcher.doc(scoreDocs[i].doc); System.out.println("" + targetDoc.toString()); } } catch (CorruptIndexException e) { e.printStackTrace(); } catch (LockObtainFailedException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (ParseException e) { e.printStackTrace(); } finally { if (ireader != null) { try { ireader.close(); } catch (IOException e) { e.printStackTrace(); } } if (directory != null) { try { directory.close(); } catch (IOException e) { e.printStackTrace(); } } } }
From source file:com.m3958.apps.pcms.lucene.facet.MultiCategoryListsFacetsExample.java
License:Apache License
/** User runs a query and counts facets. */ private List<FacetResult> search() throws IOException { DirectoryReader indexReader = DirectoryReader.open(indexDir); IndexSearcher searcher = new IndexSearcher(indexReader); TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir); // Count both "Publish Date" and "Author" dimensions FacetSearchParams fsp = new FacetSearchParams(indexingParams, new CountFacetRequest(new CategoryPath("Publish Date"), 10), new CountFacetRequest(new CategoryPath("Author"), 10)); // Aggregatses the facet counts FacetsCollector fc = FacetsCollector.create(fsp, searcher.getIndexReader(), taxoReader); // MatchAllDocsQuery is for "browsing" (counts facets // for all non-deleted docs in the index); normally // you'd use a "normal" query, and use MultiCollector to // wrap collecting the "normal" hits and also facets: searcher.search(new MatchAllDocsQuery(), fc); // Retrieve results List<FacetResult> facetResults = fc.getFacetResults(); indexReader.close();/*w w w . j ava 2 s . co m*/ taxoReader.close(); return facetResults; }