Example usage for org.apache.lucene.index IndexReader close

List of usage examples for org.apache.lucene.index IndexReader close

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Introduction

In this page you can find the example usage for org.apache.lucene.index IndexReader close.

Prototype

@Override
public final synchronized void close() throws IOException

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Document

Closes files associated with this index.

Usage

From source file:com.appeligo.lucene.DidYouMeanIndexer.java

License:Apache License

public static void createSpellIndex(String field, Directory originalIndexDirectory,
        Directory spellIndexDirectory) throws IOException {

    IndexReader indexReader = null;
    try {/* w w w . j  av a  2  s . c  o  m*/
        indexReader = IndexReader.open(originalIndexDirectory);
        Dictionary dictionary = new LuceneDictionary(indexReader, field);
        SpellChecker spellChecker = new SpellChecker(spellIndexDirectory);
        spellChecker.indexDictionary(dictionary);
        if (log.isDebugEnabled()) {
            spellChecker = new SpellChecker(spellIndexDirectory); // need to re-open to see it work
            log.debug("Does 'next' exist in the dictionary? " + spellChecker.exist("next"));
            StringBuilder sb = new StringBuilder();
            for (String s : spellChecker.suggestSimilar("noxt", 5, indexReader, "compositeField", true)) {
                sb.append(s + ", ");
            }
            log.debug("Best suggestions for 'noxt': " + sb);
        }
    } finally {
        if (indexReader != null) {
            indexReader.close();
        }
    }
}

From source file:com.appspot.socialinquirer.server.service.impl.AnalysisServiceImpl.java

License:Apache License

/**
 * Close index reader./*from ww  w  .jav a2  s. c om*/
 *
 * @param reader the reader
 */
private void closeIndexReader(IndexReader reader) {
    if (reader != null) {
        try {
            reader.close();
        } catch (Exception e) {
        }
    }
}

From source file:com.aurel.track.lucene.search.LuceneSearcher.java

License:Open Source License

public static void closeIndexSearcherAndUnderlyingIndexReader(IndexSearcher indexSearcher, String index) {
    if (indexSearcher != null) {
        IndexReader indexReader = indexSearcher.getIndexReader();
        try {//www . j a  va2s .  c o  m
            if (indexReader != null) {
                indexReader.close();
            }
        } catch (IOException e1) {
            LOGGER.error("Closing the " + index + " IndexReader failed with " + e1.getMessage());
        }
    }
}

From source file:com.barchart.feed.ddf.resolver.provider.ResolverDDF.java

License:BSD License

private synchronized IndexSearcher getSearcher() throws Exception {

    if (searcher == null) {
        searcher = new IndexSearcher(getDirectory(), true);
    }//from w  w w . j ava  2s  .  com

    final IndexReader readerOld = searcher.getIndexReader();
    final IndexReader readerNew = readerOld.reopen(true);

    /** get new instance only when index is updated */
    if (readerNew != readerOld) {
        readerOld.close();
        searcher = new IndexSearcher(readerNew);
    }

    return searcher;

}

From source file:com.basistech.lucene.tools.LuceneQueryTool.java

License:Apache License

public static void main(String[] args)
        throws IOException, org.apache.lucene.queryparser.classic.ParseException {
    String charsetName = Charset.defaultCharset().name();
    if (!"UTF-8".equals(charsetName)) {
        // Really only a problem on mac, where the default charset is MacRoman,
        // and it cannot be changed via the system Locale.
        System.err.println(String.format("defaultCharset is %s, but we require UTF-8.", charsetName));
        System.err.println("Set -Dfile.encoding=UTF-8 on the Java command line, or");
        System.err.println("set JAVA_TOOL_OPTIONS=-Dfile.encoding=UTF-8 in the environment.");
        System.exit(1);/*w  w  w  .  j  ava2s  .  c  om*/
    }

    Options options = LuceneQueryTool.createOptions();
    CommandLineParser parser = new GnuParser();
    CommandLine cmdline = null;
    try {
        cmdline = parser.parse(options, args);
        validateOptions(options, args);
    } catch (org.apache.commons.cli.ParseException e) {
        System.err.println(e.getMessage());
        usage(options);
        System.exit(1);
    }
    String[] remaining = cmdline.getArgs();
    if (remaining != null && remaining.length > 0) {
        System.err.println("unknown extra args found: " + Lists.newArrayList(remaining));
        usage(options);
        System.exit(1);
    }

    String[] indexPaths = cmdline.getOptionValues("index");
    IndexReader[] readers = new IndexReader[indexPaths.length];
    for (int i = 0; i < indexPaths.length; i++) {
        Path path = FileSystems.getDefault().getPath(indexPaths[i]);
        readers[i] = DirectoryReader.open(FSDirectory.open(path));
    }
    IndexReader reader = new MultiReader(readers, true);

    LuceneQueryTool that = new LuceneQueryTool(reader);

    String opt;
    opt = cmdline.getOptionValue("query-limit");
    if (opt != null) {
        that.setQueryLimit(Integer.parseInt(opt));
    }
    opt = cmdline.getOptionValue("output-limit");
    if (opt != null) {
        that.setOutputLimit(Integer.parseInt(opt));
    }
    opt = cmdline.getOptionValue("analyzer");
    if (opt != null) {
        that.setAnalyzer(opt);
    }
    opt = cmdline.getOptionValue("query-field");
    if (opt != null) {
        that.setDefaultField(opt);
    }
    opt = cmdline.getOptionValue("output");
    PrintStream out = null;
    if (opt != null) {
        out = new PrintStream(new FileOutputStream(new File(opt)), true);
        that.setOutputStream(out);
    }
    if (cmdline.hasOption("show-id")) {
        that.setShowId(true);
    }
    if (cmdline.hasOption("show-hits")) {
        that.setShowHits(true);
    }
    if (cmdline.hasOption("show-score")) {
        that.setShowScore(true);
    }
    if (cmdline.hasOption("sort-fields")) {
        that.setSortFields(true);
    }

    boolean suppressNames = cmdline.hasOption("suppress-names");
    Formatter.Format format = Formatter.Format.MULTILINE;
    opt = cmdline.getOptionValue("format");
    if (opt != null) {
        format = Formatter.Format.fromName(opt);
    }
    if (cmdline.hasOption("tabular")) {
        // compatibility option
        format = Formatter.Format.TABULAR;
    }
    that.setFormatter(Formatter.newInstance(format, suppressNames));

    String[] opts;
    opts = cmdline.getOptionValues("fields");
    if (opts != null) {
        that.setFieldNames(Lists.newArrayList(opts));
    }
    opt = cmdline.getOptionValue("regex");
    if (opt != null) {
        Pattern p = Pattern.compile("^(.*?):/(.*)/$");
        Matcher m = p.matcher(opt);
        if (m.matches()) {
            that.setRegex(m.group(1), Pattern.compile(m.group(2)));
        } else {
            System.err.println("Invalid regex, should be field:/regex/");
            usage(options);
            System.exit(1);
        }
    }
    opts = cmdline.getOptionValues("query");
    that.run(opts);
    if (out != null) {
        out.close();
    }
    reader.close();
}

From source file:com.bdaum.zoom.lal.internal.LireActivator.java

License:Open Source License

public void closeIndexReader(IndexReader reader) throws IOException {
    searcherMap.remove(reader);//from w w w . j  a  v a  2  s .  c  o m
    try {
        if (reader instanceof CompositeReader)
            for (LeafReaderContext context : ((CompositeReader) reader).leaves())
                context.reader().close();
        reader.close();
    } catch (AlreadyClosedException e) {
        // do nothing
    }
}

From source file:com.bewsia.script.LuceneHandler.java

License:Open Source License

public boolean exists(String id) {
    boolean tag = false;
    if (id.length() == 0)
        return tag;
    try {/*www. j  a  v  a 2 s . co m*/
        IndexReader reader = IndexReader.open(FSDirectory.open(new File(dirIndex)));
        IndexSearcher searcher = new IndexSearcher(reader);
        TopDocs td = searcher.search(new TermQuery(new Term(SEntity.ID, id)), 1);
        if (td.totalHits > 0) {
            tag = true;
        }
        searcher.close();
        reader.close();
    } catch (Exception e) {
    }

    return tag;
}

From source file:com.bewsia.script.LuceneHandler.java

License:Open Source License

public void load(String id, SEntity src) {
    try {/*from   w w w  .j  ava  2  s  . c  om*/
        IndexReader reader = IndexReader.open(FSDirectory.open(new File(dirIndex)));
        IndexSearcher searcher = new IndexSearcher(reader);
        TopDocs td = searcher.search(new TermQuery(new Term(SEntity.ID, id)), 1);
        if (td.totalHits > 0) {
            Document doc = searcher.doc(td.scoreDocs[0].doc);
            if (allowLoad(id, doc.get(SEntity.KIND))) {
                src.setSchema(doc.get(SEntity.SCHEMA));
                read(src, doc);
            }
        }
        searcher.close();
        reader.close();
    } catch (Exception e) {
    }
}

From source file:com.bewsia.script.LuceneHandler.java

License:Open Source License

public int count(String kind, Query query, Filter filter, Sort sort, int max) {
    int tag = 0;//from www . j a  v a  2s . co  m
    try {
        IndexReader reader = IndexReader.open(FSDirectory.open(new File(dirIndex)));
        IndexSearcher searcher = new IndexSearcher(reader);
        BooleanQuery boolQuery = new BooleanQuery();
        boolQuery.add(new BooleanClause(new TermQuery(new Term(SEntity.KIND, kind)), Occur.MUST));
        if (query != null) {
            boolQuery.add(new BooleanClause(query, Occur.MUST));
        }
        TopDocs td = null;
        if (filter != null && sort != null) {
            td = searcher.search(boolQuery, filter, max, sort);
        } else if (filter != null) {
            td = searcher.search(boolQuery, filter, max);
        } else if (sort != null) {
            td = searcher.search(boolQuery, max, sort);
        } else {
            td = searcher.search(boolQuery, max);
        }
        tag = td.totalHits;
        searcher.close();
        reader.close();
    } catch (Exception e) {
    }
    return tag;
}

From source file:com.bewsia.script.LuceneHandler.java

License:Open Source License

public List<SEntity> search(String kind, Query query, Filter filter, Sort sort, int max) {
    List<SEntity> tag = new ArrayList<SEntity>();
    try {/* w w w .java  2 s .  co m*/
        IndexReader reader = IndexReader.open(FSDirectory.open(new File(dirIndex)));
        IndexSearcher searcher = new IndexSearcher(reader);
        BooleanQuery boolQuery = new BooleanQuery();
        boolQuery.add(new BooleanClause(new TermQuery(new Term(SEntity.KIND, kind)), Occur.MUST));
        if (query != null) {
            boolQuery.add(new BooleanClause(query, Occur.MUST));
        }
        TopDocs td = null;
        if (filter != null && sort != null) {
            td = searcher.search(boolQuery, filter, max, sort);
        } else if (filter != null) {
            td = searcher.search(boolQuery, filter, max);
        } else if (sort != null) {
            td = searcher.search(boolQuery, max, sort);
        } else {
            td = searcher.search(boolQuery, max);
        }
        for (int i = 0; i < td.totalHits; i++) {
            SEntity item = new SEntity(this);
            Document doc = searcher.doc(td.scoreDocs[i].doc);
            item.setSchema(doc.get(SEntity.SCHEMA));
            read(item, doc);
            tag.add(item);
        }
        searcher.close();
        reader.close();
    } catch (Exception e) {
    }
    return tag;
}