DxFileAttributeView.java

/*
 * Copyright (c) 2013, the authors.
 *
 *   This file is part of 'DXFS'.
 *
 *   DXFS 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.
 *
 *   DXFS 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 DXFS.  If not, see <http://www.gnu.org/licenses/>.
 */

package nextflow.fs.dx;

import java.io.IOException;
import java.nio.file.attribute.BasicFileAttributeView;
import java.nio.file.attribute.FileTime;
import java.util.HashMap;
import java.util.Map;

/**
 * Implements the DnaNexus file system attributes views
 *
 *
 * @author Paolo Di Tommaso <paolo.ditommaso@gmail.com>
 */
public class DxFileAttributeView implements BasicFileAttributeView {

    static String NAME = "basic";

    private DxPath path;

    public DxFileAttributeView(DxPath path) {
        this.path = path;
    }

    @Override
    public String name() {
        return NAME;
    }

    @Override
    public DxFileAttributes readAttributes() throws IOException {

        return path.readAttributes();

    }

    Map<String, Object> readAttributes(String attributes) throws IOException
    {
        DxFileAttributes attr = readAttributes();

        Map<String,Object> result;

        // return ALL attributes
        if ("*".equals(attributes)) {
            result = attr.asMap();
        }

        // comma separated list of attribute names
        else {
            String[] attributesNames = attributes.split(",");
            result = new HashMap<>(attributesNames.length);

            for (String name : attributesNames) {
                result.put(name, attr.get(name));
            }
        }

        return result;
    }


    @Override
    public void setTimes(FileTime lastModifiedTime, FileTime lastAccessTime, FileTime createTime) throws IOException {
        throw new UnsupportedOperationException();
    }
}