FolderIndexer.java

package com.epam.wilma.message.search.lucene.index;
/*==========================================================================
Copyright 2013-2017 EPAM Systems

This file is part of Wilma.

Wilma is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Wilma is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Wilma.  If not, see <http://www.gnu.org/licenses/>.
===========================================================================*/

import java.io.File;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * Processes through a folder structure and sends files files to {@link FileIndexer}.
 * @author Tamas_Bihari
 *
 */
@Component
public class FolderIndexer {

    @Autowired
    private FileIndexer fileIndexer;

    /**
     * Processes through a folder structure and send files to {@link FileIndexer}.
     * @param file is the given file, folder or folder structure which will be processed
     */
    public void indexFolder(final File file) {
        // do not try to index files that cannot be read
        if (file.canRead()) {
            if (file.isDirectory()) {
                processFolder(file);
            } else {
                fileIndexer.indexFile(file);
            }
        }
    }

    private void processFolder(final File file) {
        String[] files = file.list();
        if (files != null) {
            for (int i = 0; i < files.length; i++) {
                indexFolder(new File(file, files[i]));
            }
        }
    }
}