Example usage for org.apache.lucene.search Query toString

List of usage examples for org.apache.lucene.search Query toString

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Introduction

In this page you can find the example usage for org.apache.lucene.search Query toString.

Prototype

public abstract String toString(String field);

Source Link

Document

Prints a query to a string, with field assumed to be the default field and omitted.

Usage

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);/*w ww  .j  a v  a 2  s . c o  m*/
    }

    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:SearchHelpDocs.java

License:Open Source License

/** Simple command-line based search demo. */
public static void main(String[] args) throws Exception {

    String usage = "Usage: java SearchFiles index-dir";
    if (args.length != 1) {
        System.out.println(usage);
        System.exit(0);//from  ww  w.j  a  va  2s  . com
    }
    String index = args[0];
    String field = LUC_KEY_CONTENT;
    String queries = null;
    int repeat = 0;
    boolean raw = false;
    String normsField = null;

    System.out.println("INFO: index-directory=" + index);
    IndexReader reader = IndexReader.open(index);
    if (normsField != null)
        reader = new OneNormsReader(reader, normsField);

    Searcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer();

    BufferedReader in = null;
    in = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));

    String[] fields = { LUC_KEY_CONTENT, LUC_KEY_FULL_PATH, LUC_KEY_FILE_NAME };
    MultiFieldQueryParser parser = new MultiFieldQueryParser(fields, analyzer);

    printHelpInformation();
    while (true) {
        // prompt the user         
        System.out.print(CMDLINE_PREFIX);
        System.out.flush();
        String line = in.readLine();
        if (line == null || line.length() < 0)
            break;
        if (line.trim().length() == 0) {
            continue;
        }
        // Exit gracefully.
        if (line.trim().equalsIgnoreCase(":quit")) {
            System.out.println("INFO: quit successful");
            break;
        }

        // Modify for fuzzy query (E.g. ~0.58), also use wildcard postfix (*)
        line = line + "~";
        Object obj = parser.parse(line);
        Query query = parser.parse(line);
        System.out.println(CMDLINE_PREFIX + "Searching for: [" + line + "] query=" + query.toString(field));
        System.out.flush();
        // Search and also add the sort element
        Hits hits = searcher.search(query, createSort());
        if (repeat > 0) {
            Date start = new Date();
            for (int i = 0; i < repeat; i++) {
                hits = searcher.search(query);
            }
            Date end = new Date();
            System.out.println(CMDLINE_PREFIX + "Time: " + (end.getTime() - start.getTime()) + "ms");
        }
        System.out.println(hits.length() + " total matching documents");
        for (int start = 0; start < hits.length(); start += HITS_PER_PAGE) {
            int end = Math.min(hits.length(), start + HITS_PER_PAGE);
            for (int i = start; i < end; i++) {

                System.out.println(CMDLINE_PREFIX + "doc=" + hits.id(i) + " score=" + hits.score(i));

                // Ignore scores based on a certain threshold
                if (hits.score(i) < 0.09)
                    continue;

                Document doc = hits.doc(i);
                String path = doc.get(LUC_KEY_CONTENT);
                if (path != null) {
                    // Attempt to pretty print help document information
                    System.out.println("\n == Help Document Found; docid=" + hits.id(i));
                    System.out.println("*************************");
                    String fullpath = doc.get(LUC_KEY_FULL_PATH);
                    String filename = doc.get(LUC_KEY_FILE_NAME);
                    String content = doc.get(LUC_KEY_CONTENT);
                    String id = doc.get(LUC_KEY_IDENTITY);
                    if (filename != null) {
                        System.out.println("   +Filename: " + doc.get(filename));
                    }
                    if (fullpath != null) {
                        System.out.println("   +Path: " + doc.get(fullpath));
                    }
                    System.out.println("   id: " + id);
                    System.out.println(" == Content:");
                    System.out.println(prettyPrintContent(content));
                    System.out.println("-------------------------");

                    System.out.println();
                } else {
                    System.out.println((i + 1) + ". " + "No content for this document");
                }
            }
            if (queries != null) // non-interactive
                break;
            if (hits.length() > end) {
                System.out.print("more (y/n) ? ");
                line = in.readLine();
                if (line.length() == 0 || line.charAt(0) == 'n')
                    break;
            }
        }
    }
    reader.close();
}

From source file:Get_Top_Documents_Based_on_Lucene.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 .  j a va  2 s  . c  o m*/
    }

    //String index = "index";
    //String index = "index_wiki_2";
    String index = "index_external_links_v1/";
    String field = "contents";
    String queries = null;
    int repeat = 0;
    boolean raw = false;
    String queryString = null;
    int hitsPerPage = 20;

    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);

    // Read Question in Training Data line by line
    //String path_train = "data/training_set.tsv";
    //String path_output = "data/lucene_search_result_train.txt";
    //String path_train = "data/validation_set.tsv";
    //String path_output = "data/lucene_search_result_validation_index_wiki_2.txt";
    String path_train = "data/training_set.tsv";
    String path_output = "data/lucene_search_result_train_index_wiki_external_links_v1.txt";
    Writer writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(path_output), "UTF-8"));
    try (BufferedReader br = new BufferedReader(new FileReader(path_train))) {
        String line;
        while ((line = br.readLine()) != null) {
            line = line.trim();
            String[] lst = line.split("\t");
            String query_s = lst[1];
            if (query_s == "question") {
                continue;
            }
            System.out.println("query_s: " + query_s);
            writer.write(query_s + "\t");
            try {
                Query query = parser.parse(query_s);
                System.out.println("Searching for: " + query.toString(field));
                doPagingSearch(in, writer, searcher, query, hitsPerPage, raw,
                        queries == null && queryString == null);
            } catch (org.apache.lucene.queryparser.classic.ParseException e) {
                continue;
            }
        } // while
    }
    writer.close();
    /*
    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;
      }
    } // while (True)
    */
    reader.close();
}

From source file:SearchFilesTest.java

License:Apache License

/** Simple command-line based search demo. */
public static void main(String[] args) throws Exception {
    String index = args[0];/*from www  . ja  va2  s  .  c o m*/
    String field = "contents";
    String queries = "resources/query.txt";
    String queryString = null;
    int hitsPerPage = 10;

    IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(index)));
    IndexSearcher searcher = new IndexSearcher(reader);
    File stopWordsFile = new File("resources/stop.txt");
    CharArraySet stopWordsCharArraySet = WordlistLoader.getWordSet(new FileReader(stopWordsFile),
            Version.LUCENE_47);
    Analyzer analyzer = new RomanianAnalyzerUsingAnotherConstructorForStopwordAnalyzer(Version.LUCENE_47,
            stopWordsCharArraySet);

    BufferedReader in = null;
    in = new BufferedReader(new InputStreamReader(new FileInputStream(queries), codification));
    QueryParser parser = new QueryParser(Version.LUCENE_47, field, analyzer);
    while (true) {
        String line = 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("Looking for: " + query.toString(field));
        doPagingSearch(in, searcher, query);

        if (queryString != null) {
            break;
        }
    }
    reader.close();
}

From source file:SimpleLuceneSearch.java

License:Apache License

public String getCuidFromMimId(String mimId) throws IOException, ParseException { //term: ??

    String field = "mimId";
    String userQuery = mimId;/*from  w w w.ja v a2  s  . co  m*/

    // only searching, so read-only=true
    Query query = new QueryParser(Version.LUCENE_35, field, ANALYSER).parse(userQuery);

    System.out.println("Searching for: " + query.toString(field) + " in OMIM MRCONSO");
    int hitsPerPage = 10;// result is ordered with lucene scored then true
    TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage, true);
    SEARCHER.search(query, collector);
    int numTotalHits = collector.getTotalHits();

    //display results
    //System.out.println("Found " + numTotalHits + " hits.");
    if (numTotalHits == 1) {
        ScoreDoc[] results = collector.topDocs().scoreDocs;
        int docId = results[0].doc;
        Document d = SEARCHER.doc(docId);
        System.out.println("         =>" + d.get("cuId"));
        return d.get("cuId");
    } else if (numTotalHits > 1) {
        ScoreDoc[] results = collector.topDocs().scoreDocs;
        int docId = results[0].doc; // WE TAKE THE FIRST ONE
        Document d = SEARCHER.doc(docId);
        return d.get("cuId");

    } else if (numTotalHits == 0) {
        System.out.println("WARNING: there is no corresping CUI");
    }
    return "";
}

From source file:SimpleLuceneSearch.java

License:Apache License

/**
 * //from w  ww . j  a  va  2  s . co m
 * @param symbol
 * @return
 * @throws IOException
 * @throws ParseException
 */
public String getPharmgkbIdForDrug(String drugName) throws IOException, ParseException { //symbol:warfarin

    String field = "name";
    String userQuery = drugName;
    // only searching, so read-only=true
    Query query = new QueryParser(Version.LUCENE_35, field, ANALYSER).parse(userQuery);

    System.out.println("Searching for: " + query.toString(field) + "in PharmGKB drugs ");
    int hitsPerPage = 10;// result is ordered with lucene scored then true
    TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage, true);
    SEARCHER.search(query, collector);
    int numTotalHits = collector.getTotalHits();

    //display results
    //System.out.println("Found " + numTotalHits + " hits.");
    if (numTotalHits == 1) {
        ScoreDoc[] results = collector.topDocs().scoreDocs;
        int docId = results[0].doc;
        Document d = SEARCHER.doc(docId);
        return d.get("paId");
    } else if (numTotalHits > 1) {
        System.out.println("WARNING: there is several corresping paId");
    } else if (numTotalHits == 0) {
        System.out.println("WARNING: there is no corresping paId");
        // let's try alternate gene symbols
        String userQuery2 = drugName;
        Query query2 = new QueryParser(Version.LUCENE_35, "genericNames", ANALYSER).parse(userQuery2);
        TopScoreDocCollector collector2 = TopScoreDocCollector.create(hitsPerPage, true);
        SEARCHER.search(query2, collector2);
        int numTotalHits2 = collector2.getTotalHits();
        if (numTotalHits2 > 1) {
            ScoreDoc[] results2 = collector2.topDocs().scoreDocs;
            int docId = results2[0].doc; // WE TAKE THE FIRST ONE
            Document d = SEARCHER.doc(docId);
            return d.get("paId");
        }
    }
    //System.out.println((i + 1) + ". " + d.get("cuId")+ ", meshId= " + d.get("meshId")+ ", term= " + d.get("term")+ ", preferred= " + d.get("preferred"));
    return "";
}

From source file:SimpleLuceneSearch.java

License:Apache License

/**
 * get the PA ID from the gene symbol by querying a lucen index make form the genes.tsv file
 * @param symbol/*from  w w w.  j  a v  a  2 s  . c  o m*/
 * @return
 * @throws IOException
 * @throws ParseException
 */
public String getPharmgkbIdForGene(String symbol) throws IOException, ParseException { //symbol:CYP2C9

    String field = "symbol";
    String userQuery = symbol;

    // only searching, so read-only=true
    Query query = new QueryParser(Version.LUCENE_35, field, ANALYSER).parse(userQuery);

    System.out.println("Searching for: " + query.toString(field) + "in PharmGKB genes ");
    int hitsPerPage = 10;// result is ordered with lucene scored then true
    TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage, true);
    SEARCHER.search(query, collector);
    int numTotalHits = collector.getTotalHits();

    //display results
    //System.out.println("Found " + numTotalHits + " hits.");
    if (numTotalHits == 1) {
        ScoreDoc[] results = collector.topDocs().scoreDocs;
        int docId = results[0].doc;
        Document d = SEARCHER.doc(docId);
        return d.get("paId");
    } else if (numTotalHits > 1) {
        System.out.println("WARNING: there is several corresping paId");
    } else if (numTotalHits == 0) {
        System.out.println("WARNING: there is no corresping paId");
        // let's try alternate gene symbols
        String userQuery2 = symbol;
        Query query2 = new QueryParser(Version.LUCENE_35, "alternateSymbols", ANALYSER).parse(userQuery2);
        TopScoreDocCollector collector2 = TopScoreDocCollector.create(hitsPerPage, true);
        SEARCHER.search(query2, collector2);
        int numTotalHits2 = collector2.getTotalHits();
        if (numTotalHits2 > 1) {
            ScoreDoc[] results2 = collector2.topDocs().scoreDocs;
            int docId = results2[0].doc; // WE TAKE THE FIRST ONE
            Document d = SEARCHER.doc(docId);
            return d.get("paId");
        }
    }
    //System.out.println((i + 1) + ". " + d.get("cuId")+ ", meshId= " + d.get("meshId")+ ", term= " + d.get("term")+ ", preferred= " + d.get("preferred"));
    return "";
}

From source file:SimpleLuceneSearch.java

License:Apache License

/**
 * // ww w.  j ava2  s.co m
 * @param diseaseLabel
 * @return
 * @throws IOException
 * @throws ParseException
 */
public String getPharmgkbIdForDisease(String diseaseLabel) throws IOException, ParseException { //symbol:warfarin

    String field = "diseaseLabel";
    String userQuery = diseaseLabel;
    // only searching, so read-only=true
    Query query = new QueryParser(Version.LUCENE_35, field, ANALYSER).parse(userQuery);

    System.out.println("Searching for: " + query.toString(field) + "in PharmGKB diseases ");
    int hitsPerPage = 10;// result is ordered with lucene scored then true
    TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage, true);
    SEARCHER.search(query, collector);
    int numTotalHits = collector.getTotalHits();

    //display results
    //System.out.println("Found " + numTotalHits + " hits.");
    if (numTotalHits == 1) {
        ScoreDoc[] results = collector.topDocs().scoreDocs;
        int docId = results[0].doc;
        Document d = SEARCHER.doc(docId);
        return d.get("paId");
    } else if (numTotalHits > 1) {
        System.out.println("WARNING: there is several corresping paId");
        // let's see if one of the results has a label exactly similar
        ScoreDoc[] results = collector.topDocs().scoreDocs;
        for (int i = 0; i < results.length; ++i) {
            int docId = results[i].doc;
            Document d = SEARCHER.doc(docId);
            if (d.get("diseaseLabel").toLowerCase().equals(diseaseLabel.toLowerCase())) {
                return d.get("paId");
            }
        }
    } else if (numTotalHits == 0) {
        System.out.println("WARNING: there is no corresping paId");
    }
    //System.out.println((i + 1) + ". " + d.get("cuId")+ ", meshId= " + d.get("meshId")+ ", term= " + d.get("term")+ ", preferred= " + d.get("preferred"));
    return "";
}

From source file:LuceneSearchFiles.java

License:Apache License

/** Simple command-line based search demo. */
public static void search(String phrase, String field, int hitsPerPage) {
    try {/*from w ww . j a v a2s  .  co m*/
        IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(m_index)));
        IndexSearcher searcher = new IndexSearcher(reader);
        Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_40);

        QueryParser parser = new QueryParser(Version.LUCENE_40, field, analyzer);

        Query query = parser.parse(phrase);
        System.out.println("Searching for: " + query.toString(field));

        searcher.search(query, null, hitsPerPage);

        TopDocs results = searcher.search(query, hitsPerPage);
        ScoreDoc[] hits = results.scoreDocs;

        for (ScoreDoc hit : hits) {
            Document doc = searcher.doc(hit.doc);
            //String path = doc.get("path");   
            String title = doc.get("title");
            System.out.println(hit.score + " -" + title);
        }
        reader.close();
    } catch (IOException e) {

    } catch (ParseException e) {

    }
}

From source file:al.franzis.lucene.header.search.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/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);/*from w w w  .java  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++;
        }
    }

    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();
}