Is there anyone who can answer my question?
Thansk,
Yin
On Fri, Nov 16, 2012 at 4:15 PM, Yin Huai <huaiyin....@gmail.com> wrote:
> Hi All,
>
> I have a question about the method read in CheckSumFSInputChecker. Can you
> let me know why the file will be opened and closed for every read operation?
>
> thanks,
>
> Yin
>
> Here is the code of CheckSumFSInputChecker.read(...) ...
> public int read(long position, byte[] b, int off, int len)
> throws IOException {
> // parameter check
> if ((off | len | (off + len) | (b.length - (off + len))) < 0) {
> throw new IndexOutOfBoundsException();
> } else if (len == 0) {
> return 0;
> }
> if( position<0 ) {
> throw new IllegalArgumentException(
> "Parameter position can not to be negative");
> }
>
> ChecksumFSInputChecker checker = new ChecksumFSInputChecker(fs,
> file);
> checker.seek(position);
> int nread = checker.read(b, off, len);
> checker.close();
> return nread;
> }
>
>
