Example usage for org.apache.lucene.store FSDirectory listAll

Introduction

In this page you can find the example usage for org.apache.lucene.store FSDirectory listAll.

Prototype

@Override
    public String[] listAll() throws IOException 

Source Link

Usage

From source file:edu.ucla.cs.scai.linkedspending.index.QueryIndexWithLucene.java

public QueryIndexWithLucene(String path) {
    System.out.println("Loading index...");
    HashMap<String, Analyzer> analyzerMap = new HashMap<>();
    analyzerMap.put("label", new EnglishAnalyzer(CharArraySet.EMPTY_SET));
    analyzerMap.put("uri", new WhitespaceAnalyzer());
    analyzerMap.put("type", new WhitespaceAnalyzer());
    analyzer = new PerFieldAnalyzerWrapper(new WhitespaceAnalyzer(), analyzerMap);
    if (!path.endsWith(File.separator)) {
        path += File.separator;/*w w w.j a  v a2s . c om*/
    }
    directory = new RAMDirectory();
    FSDirectory tempDirectory;
    System.out.println("Loading index from disk...");
    try {
        tempDirectory = FSDirectory.open(Paths.get(path));
        for (String file : tempDirectory.listAll()) {
            directory.copyFrom(tempDirectory, file, file, IOContext.DEFAULT);

        }
    } catch (IOException ex) {
        Logger.getLogger(QueryIndexWithLucene.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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From source file:it.agilelab.bigdata.spark.search.impl.BigChunksRAMDirectory.java

License:Apache License

private BigChunksRAMDirectory(FSDirectory dir, boolean closeDir, IOContext context) throws IOException {
    this();/*from  w ww. j  a v a2  s  .  co  m*/
    for (String file : dir.listAll()) {
        if (!Files.isDirectory(dir.getDirectory().resolve(file))) {
            copyFrom(dir, file, file, context);
        }
    }
    if (closeDir) {
        dir.close();
    }
}

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From source file:org.opencms.search.CmsSearchIndex.java

License:Open Source License

/**
 * Creates a backup of this index for optimized re-indexing of the whole content.<p>
 * //from   www  . j a v a2  s  . c  o  m
 * @return the path to the backup folder, or <code>null</code> in case no backup was created
 */
protected String createIndexBackup() {

    if (!isBackupReindexing()) {
        // if no backup is generated we don't need to do anything
        return null;
    }

    // check if the target directory already exists
    File file = new File(getPath());
    if (!file.exists()) {
        // index does not exist yet, so we can't backup it
        return null;
    }
    String backupPath = getPath() + "_backup";
    try {
        // open file directory for Lucene
        FSDirectory oldDir = FSDirectory.open(file);
        FSDirectory newDir = FSDirectory.open(new File(backupPath));
        for (String fileName : oldDir.listAll()) {
            oldDir.copy(newDir, fileName, fileName);
        }
    } catch (Exception e) {
        LOG.error(Messages.get().getBundle().key(Messages.LOG_IO_INDEX_BACKUP_CREATE_3, getName(), getPath(),
                backupPath), e);
        backupPath = null;
    }
    return backupPath;
}

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From source file:org.tightblog.service.LuceneIndexer.java

License:Apache License

private Directory getFSDirectory(boolean delete) {
    FSDirectory directory = null;

    try {/*  w  w w.  ja  v a  2  s. co m*/
        directory = FSDirectory.open(new File(indexDir).toPath());
        if (delete) {
            // clear old files
            String[] files = directory.listAll();
            for (String fileName : files) {
                File file = new File(indexDir, fileName);
                if (!file.delete()) {
                    throw new IOException("couldn't delete " + fileName);
                }
            }
        }
    } catch (IOException e) {
        log.error("Problem accessing index directory", e);
    }

    return directory;

}

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