net.sourceforge.jtds.jdbc
Class BlobImpl

java.lang.Object
  net.sourceforge.jtds.jdbc.BlobImpl

All Implemented Interfaces:

java.sql.Blob

public class BlobImpl

extends java.lang.Object

implements java.sql.Blob

An in-memory or disk based representation of binary data.

Version:

$Id: BlobImpl.java,v 1.31.2.3 2009-12-30 08:45:34 ickzon Exp $

Author:

Brian Heineman, Mike Hutchinson

Field Summary

private BlobBuffer	blobBuffer The underlying BlobBuffer.
private static byte[]	EMPTY_BLOB 0 length byte[] as initial value for empty Blobs.

Constructor Summary

(package private)	BlobImpl(ConnectionJDBC2 connection) Constructs a new empty Blob instance.
(package private)	BlobImpl(ConnectionJDBC2 connection, byte[] bytes) Constructs a new Blob instance initialized with data.

Method Summary

java.io.InputStream	getBinaryStream()
byte[]	getBytes(long pos, int length)
long	length()
long	position(java.sql.Blob pattern, long start)
long	position(byte[] pattern, long start)
java.io.OutputStream	setBinaryStream(long pos)
int	setBytes(long pos, byte[] bytes)
int	setBytes(long pos, byte[] bytes, int offset, int len)
void	truncate(long len)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY_BLOB

private static final byte[] EMPTY_BLOB

0 length byte[] as initial value for empty Blobs.

blobBuffer

private final BlobBuffer blobBuffer

The underlying BlobBuffer.

Constructor Detail

BlobImpl

BlobImpl(ConnectionJDBC2 connection)

Constructs a new empty Blob instance.

Parameters:

connection - a reference to the parent connection object

BlobImpl

BlobImpl(ConnectionJDBC2 connection,
         byte[] bytes)

Constructs a new Blob instance initialized with data.

Parameters:

connection - a reference to the parent connection object

bytes - the blob object to encapsulate

Method Detail

getBinaryStream

public java.io.InputStream getBinaryStream()
                                    throws java.sql.SQLException

Specified by:

getBinaryStream in interface java.sql.Blob

Throws:

java.sql.SQLException

getBytes

public byte[] getBytes(long pos,
                       int length)
                throws java.sql.SQLException

Specified by:

getBytes in interface java.sql.Blob

Throws:

java.sql.SQLException

length

public long length()
            throws java.sql.SQLException

Specified by:

length in interface java.sql.Blob

Throws:

java.sql.SQLException

position

public long position(byte[] pattern,
                     long start)
              throws java.sql.SQLException

Specified by:

position in interface java.sql.Blob

Throws:

java.sql.SQLException

position

public long position(java.sql.Blob pattern,
                     long start)
              throws java.sql.SQLException

Specified by:

position in interface java.sql.Blob

Throws:

java.sql.SQLException

setBinaryStream

public java.io.OutputStream setBinaryStream(long pos)
                                     throws java.sql.SQLException

Specified by:

setBinaryStream in interface java.sql.Blob

Throws:

java.sql.SQLException

setBytes

public int setBytes(long pos,
                    byte[] bytes)
             throws java.sql.SQLException

Specified by:

setBytes in interface java.sql.Blob

Throws:

java.sql.SQLException

setBytes

public int setBytes(long pos,
                    byte[] bytes,
                    int offset,
                    int len)
             throws java.sql.SQLException

Specified by:

setBytes in interface java.sql.Blob

Throws:

java.sql.SQLException

truncate

public void truncate(long len)
              throws java.sql.SQLException

Specified by:

truncate in interface java.sql.Blob

Throws:

java.sql.SQLException