Example usage for org.apache.lucene.queryparser.classic MultiFieldQueryParser MultiFieldQueryParser

Introduction

In this page you can find the example usage for org.apache.lucene.queryparser.classic MultiFieldQueryParser MultiFieldQueryParser.

Prototype

public MultiFieldQueryParser(String[] fields, Analyzer analyzer, Map<String, Float> boosts) 

Source Link

Document

Creates a MultiFieldQueryParser.

Usage

From source file:Example.lucene.SearchNHilight.java

public static void main(String[] args) throws IOException, ParseException, InvalidTokenOffsetsException {
    //... Above, create documents with two fields, one with term vectors (tv) and one without (notv)
    Analyzer analyzer = new ThaiAnalyzer(Version.LUCENE_45);

    Directory index = FSDirectory.open(new File("data/indexing"));
    String querystr = args.length > 0 ? args[0] : "golf user";
    // the "title" arg specifies the default field to use
    // when no field is explicitly specified in the query.
    Query query = new MultiFieldQueryParser(Version.LUCENE_45, new String[] { "content" }, analyzer)
            .parse(querystr);// w ww.ja va 2s. c om

    // 3. search
    int hitsPerPage = 10;
    IndexReader reader = DirectoryReader.open(index);
    IndexSearcher searcher = new IndexSearcher(reader);

    TopDocs hits = searcher.search(query, 10);

    SimpleHTMLFormatter htmlFormatter = new SimpleHTMLFormatter();
    Highlighter highlighter = new Highlighter(htmlFormatter, new QueryScorer(query));
    String Preview;
    for (int i = 0; i < 10; i++) {
        int id = hits.scoreDocs[i].doc;
        Document doc = searcher.doc(id);
        String text;
        Preview = "";
        System.out.println(doc.get("url"));
        System.out.println(doc.get("title"));
        text = doc.get("content");
        TokenStream tokenStream = TokenSources.getAnyTokenStream(searcher.getIndexReader(), id, "content",
                analyzer);
        TextFragment[] frag = highlighter.getBestTextFragments(tokenStream, text, false, 10);//highlighter.getBestFragments(tokenStream, text, 3, "...");
        int k = 0;
        for (TextFragment frag1 : frag) {
            if ((frag1 != null) && (frag1.getScore() > 0)) {
                Preview += (frag1.toString()) + "...<br>";
                k++;
                // Get 2 Line Preview
                if (k >= 2)
                    break;
            }
        }
        //Term vector
        System.out.println("-------------");
    }
}

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From source file:Example.lucene.TestSearch.java

public static void main(String[] args) throws ParseException, IOException {

    Analyzer analyzer = new ThaiAnalyzer(Version.LUCENE_45);

    Directory index = FSDirectory.open(new File("data/indexingonly"));

    // 2. query//from   w w  w.j  av  a  2  s.c om
    String querystr = args.length > 0 ? args[0] : "golf user";

    // the "title" arg specifies the default field to use
    // when no field is explicitly specified in the query.
    Query q = new MultiFieldQueryParser(Version.LUCENE_45, new String[] { "content" }, analyzer)
            .parse(querystr);

    // 3. search
    int hitsPerPage = 10;
    try (IndexReader reader = DirectoryReader.open(index)) {
        IndexSearcher searcher = new IndexSearcher(reader);

        TopScoreDocCollector collector = TopScoreDocCollector.create(hitsPerPage, true);
        searcher.search(q, collector);

        TopDocs td = collector.topDocs(5);
        ScoreDoc[] hits = td.scoreDocs;

        // 4. display results
        System.out.println("Found " + hits.length + " hits. from " + td.totalHits + " docs.");
        for (int i = 0; i < hits.length; ++i) {
            int docId = hits[i].doc;
            Document d = searcher.doc(docId);
            System.out.println((i + 1) + ". " + d.get("id") + "\t" + d.get("url") + "\t" + d.get("title") + "\t"
                    + d.get("content"));

        }
    }
}

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From source file:irlucene.CFCRetrieval.java

public ScoreDoc[] query(QueryData queryData, float titleBoost) {
    HashMap<String, Float> boosts;
    MultiFieldQueryParser queryParser;//from  w  w w.j ava2 s.  c o m
    Query q;
    IndexReader indexReader;
    IndexSearcher indexSearcher;
    TopDocs docs;
    ScoreDoc[] hits = null;
    try {
        boosts = new HashMap<>();
        if (titleBoost != 0) {
            boosts.put("title", titleBoost);
        }
        queryParser = new MultiFieldQueryParser(
                new String[] { "paperNumber", "recordNumber", "acessionNumber", "authors", "title", "source",
                        "majorSubjects", "minorSubjects", "abstractExtract", "references", "citations" },
                analyzer, boosts);
        q = queryParser.parse(queryData.getQuery());
        indexReader = DirectoryReader.open(index);
        indexSearcher = new IndexSearcher(indexReader);
        docs = indexSearcher.search(q, indexReader.numDocs());

        hits = docs.scoreDocs;
        indexReader.close();
    } catch (ParseException | IOException ex) {
        Logger.getLogger(CFCRetrieval.class.getName()).log(Level.SEVERE, null, ex);
    }
    return hits;
}

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From source file:irlucene.MEDRetrieval.java

public ScoreDoc[] query(QueryData queryData) {
    HashMap<String, Float> boosts;
    MultiFieldQueryParser queryParser;//from w w  w .jav a 2s. c o m
    Query q;
    IndexReader indexReader;
    IndexSearcher indexSearcher;
    TopDocs docs;
    ScoreDoc[] hits = null;
    try {
        boosts = new HashMap<>();
        queryParser = new MultiFieldQueryParser(new String[] { "id", "content" }, analyzer, boosts);
        q = queryParser.parse(queryData.getQuery());
        indexReader = DirectoryReader.open(index);
        indexSearcher = new IndexSearcher(indexReader);
        docs = indexSearcher.search(q, indexReader.numDocs());

        hits = docs.scoreDocs;
        indexReader.close();
    } catch (ParseException | IOException ex) {
        Logger.getLogger(CFCRetrieval.class.getName()).log(Level.SEVERE, null, ex);
    }
    return hits;
}

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From source file:Main.WebAPI.Search.java

/**
 * //from  ww w  . j a v a  2 s .c  om
 * @param args args[0] is a query
 * 
 * @throws IOException
 * @throws ParseException
 * @throws InvalidTokenOffsetsException 
 */

public static void main(String[] args) throws IOException, ParseException, InvalidTokenOffsetsException {
    //... Above, create documents with two fields, one with term vectors (tv) and one without (notv)
    Analyzer analyzer = new ThaiAnalyzer(Version.LUCENE_45);

    Directory index = FSDirectory.open(new File("data/indexing"));
    String querystr = args.length > 0 ? args[0] : "mike lab";
    // the "title" arg specifies the default field to use
    // when no field is explicitly specified in the query.
    Query query = new MultiFieldQueryParser(Version.LUCENE_45, new String[] { "content" }, analyzer)
            .parse(querystr);

    // 3. search
    int hitsPerPage = 10;
    IndexReader reader = DirectoryReader.open(index);
    IndexSearcher searcher = new IndexSearcher(reader);

    TopDocs hits = searcher.search(query, 10);

    SimpleHTMLFormatter htmlFormatter = new SimpleHTMLFormatter();
    Highlighter highlighter = new Highlighter(htmlFormatter, new QueryScorer(query));
    String Preview;
    for (int i = 0; i < 10; i++) {
        int id = hits.scoreDocs[i].doc;
        Document doc = searcher.doc(id);
        String text;
        Preview = "";
        System.out.println(doc.get("url"));
        System.out.println(doc.get("title"));
        text = doc.get("content");
        TokenStream tokenStream = TokenSources.getAnyTokenStream(searcher.getIndexReader(), id, "content",
                analyzer);
        TextFragment[] frag = highlighter.getBestTextFragments(tokenStream, text, false, 10);//highlighter.getBestFragments(tokenStream, text, 3, "...");
        int k = 0;
        for (TextFragment frag1 : frag) {
            if ((frag1 != null) && (frag1.getScore() > 0)) {
                Preview += (frag1.toString()) + "...<br>";
                k++;
                // Get 2 Line Preview
                if (k >= 2)
                    break;
            }
        }
        //Term vector
        System.out.println("-------------");
    }
}

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From source file:net.semanticmetadata.lire.impl.searcher.KeyWordsImageSearcher.java

License:Open Source License

public KeyWordsImageSearcher(int numMaxHits) {
    this.numMaxHits = numMaxHits;
    //???/* w w w.  jav a2s  .  c  o m*/
    qp = new MultiFieldQueryParser(LuceneUtils.LUCENE_VERSION, new String[] { DocumentBuilder.FIELD_NAME_TITLE,
            DocumentBuilder.FIELD_NAME_TAGS, DocumentBuilder.FIELD_NAME_LOCATION }, new IKAnalyzer());
}

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From source file:net.ymate.platform.module.search.SearchParser.java

License:Apache License

public static Query parse(String[] fields, String value, Operator op) {
    QueryParser parser = new MultiFieldQueryParser(Searchs.getConfig().getLuceneVersion(), fields,
            Searchs.getConfig().getAnalyzerImpl());
    parser.setDefaultOperator(op);/* w  w  w  . j av  a 2  s . co m*/
    return parse(parser, value);
}

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From source file:net.ymate.platform.module.search.support.SearchHelper.java

License:Apache License

public SearchHelper<T> query(String[] fields, String value, Operator opt) {
    QueryParser _parser = new MultiFieldQueryParser(Searchs.getConfig().getLuceneVersion(), fields,
            Searchs.getConfig().getAnalyzerImpl());
    _parser.setDefaultOperator(opt);//from  ww w.  j a va2  s.  c o m
    return query(_parser, value);
}

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From source file:org.apache.clerezza.rdf.cris.GenericCondition.java

License:Apache License

/**
 * Creates a new GenericCondition./*ww  w  . ja va 2  s  .c o  m*/
 *
 * @param properties    the properties to search for.
 * @param searchQuery    the search string (pattern).
 * @param escapeQuery    whether to escape special characters in the query string or not.
 */
public GenericCondition(Collection<VirtualProperty> properties, String searchQuery, boolean escapeQuery) {
    fields = new String[properties.size()];
    Iterator<VirtualProperty> it = properties.iterator();
    for (int i = 0; i < properties.size(); ++i) {
        fields[i] = it.next().stringKey;
    }

    if (escapeQuery) {
        searchQuery = QueryParser.escape(searchQuery);
    }
    this.searchQuery = searchQuery;

    this.queryParser = new MultiFieldQueryParser(Version.LUCENE_41, fields,
            new StandardAnalyzer(Version.LUCENE_41));
    queryParser.setAllowLeadingWildcard(true);
}

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From source file:org.apache.derby.optional.api.LuceneUtils.java

License:Apache License

/**
 * <p>/* ww  w .j a v a 2s  . c om*/
 * Get the default, classic QueryParser.
 * </p>
 */
public static QueryParser defaultQueryParser(Version version, String[] fieldNames, Analyzer analyzer) {
    return new MultiFieldQueryParser(version, fieldNames, analyzer);
}

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