public boolean init(RandomAccessFile raf, boolean fullCheck) throws IOException {
    setByteOrder();
    rf = raf;
    fileSize = rf.length();
    raf.seek(0);

    return init(fullCheck);
  }
public boolean init(RandomAccessFile raf, boolean fullCheck) throws IOException {
    setByteOrder();
    rf = raf;
    fileSize = rf.length();
    raf.seek(0);

    return init(fullCheck);
  }
public boolean init ( RandomAccessFile raf , boolean fullCheck ) throws IOException { setByteOrder ( ) ; rf = raf ; fileSize = rf . length ( ) ; raf . seek ( 0 ) ; return init ( fullCheck ) ; }
Initialize the file, read in all the metadata (ala DM_OPEN)

@param raf       RandomAccessFile to read.
@param fullCheck if true, check entire structure
@throws IOException problem reading file
Initialize the file read in all the metadata ( ala DM_OPEN )