Class BlobInputStream

  • All Implemented Interfaces:
    Closeable, AutoCloseable

    public class BlobInputStream
    extends InputStream
    This is an implementation of an InputStream from a large object.
    • Constructor Detail

      • BlobInputStream

        public BlobInputStream​(LargeObject lo)
        Parameters:
        lo - LargeObject to read from
      • BlobInputStream

        public BlobInputStream​(LargeObject lo,
                               int bsize)
        Parameters:
        lo - LargeObject to read from
        bsize - buffer size
      • BlobInputStream

        public BlobInputStream​(LargeObject lo,
                               int bsize,
                               long limit)
        Parameters:
        lo - LargeObject to read from
        bsize - buffer size
        limit - max number of bytes to read
    • Method Detail

      • close

        public void close()
                   throws IOException

        Closes this input stream and releases any system resources associated with the stream.

        The close method of InputStream does nothing.

        Specified by:
        close in interface AutoCloseable
        Specified by:
        close in interface Closeable
        Overrides:
        close in class InputStream
        Throws:
        IOException - if an I/O error occurs.
      • mark

        public void mark​(int readlimit)

        Marks the current position in this input stream. A subsequent call to the reset method repositions this stream at the last marked position so that subsequent reads re-read the same bytes.

        The readlimit arguments tells this input stream to allow that many bytes to be read before the mark position gets invalidated.

        The general contract of mark is that, if the method markSupported returns true, the stream somehow remembers all the bytes read after the call to mark and stands ready to supply those same bytes again if and whenever the method reset is called. However, the stream is not required to remember any data at all if more than readlimit bytes are read from the stream before reset is called.

        Marking a closed stream should not have any effect on the stream.

        Overrides:
        mark in class InputStream
        Parameters:
        readlimit - the maximum limit of bytes that can be read before the mark position becomes invalid.
        See Also:
        InputStream.reset()
      • markSupported

        public boolean markSupported()
        Tests if this input stream supports the mark and reset methods. The markSupported method of InputStream returns false.
        Overrides:
        markSupported in class InputStream
        Returns:
        true if this true type supports the mark and reset method; false otherwise.
        See Also:
        InputStream.mark(int), InputStream.reset()