@Override
  public String convertToString() {
    StringBuilder objInStr = new StringBuilder();
    objInStr.append(fullyQualifiedSourcePath)
            .append(URI_SEPARATOR)
            .append(fullyQualifiedTargetPath)
            .append(URI_SEPARATOR)
            .append(tableName)
            .append(URI_SEPARATOR)
            .append(copyMode)
            .append(URI_SEPARATOR)
            .append(snapshotPrefix);

    return objInStr.toString();
  }
DirCopyWork, mainly to be used to copy External table data.
ql/src/java/org/apache/hadoop/hive/ql/exec/repl/DirCopyWork.java