DirListOperation.java

package hep.io.root.daemon.xrootd;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * Enumerate the contents of a directory.
 * @author tonyj
 */
class DirListOperation extends Operation<List<String>> {

    /**
     * Create the DirListOperation.
     * @param path is the path of a directory whose entries are to be listed.
     */
    DirListOperation(String path) {
        super("dirList", new DirListMessage(path), new DirListCallback());
    }

    private static class DirListMessage extends Message {

        DirListMessage(String path) {
            super(XrootdProtocol.kXR_dirlist, path);
        }
    }

    private static class DirListCallback extends Callback<List<String>> {

        private List<String> dirListResult = new ArrayList<String>();

        List<String> responseReady(Response response) throws IOException {
            String files = response.getDataAsString();
            return Arrays.asList(files.split("\\n"));
        }

        @Override
        public void clear() {
            dirListResult.clear();
        }
    }
}