public final class ByteArrayBlob extends Object implements Blob
BLOB
value to an array of bytes.
A ByteArrayBlob contains an internal buffer that contains bytes that may be
read from the stream. The Blob
interface provides methods for
getting the length of an SQL BLOB
(Binary Large Object) value,
for materializing a BLOB
value on the client, and for
determining the position of a pattern of bytes within a BLOB
value. The ByteArrayBlob has static factory methods for constructing an
BLOB
using either an existing serializable object, or an array
of bytes. This is a nice way to store serialized objects in a relational
field of type SQL BLOB
.Constructor and Description |
---|
ByteArrayBlob(byte[] bytes) |
Modifier and Type | Method and Description |
---|---|
void |
free() |
InputStream |
getBinaryStream() |
InputStream |
getBinaryStream(long pos,
long length) |
byte[] |
getBytes(long pos,
int length) |
long |
length() |
long |
position(Blob pattern,
long start) |
long |
position(byte[] pattern,
long start) |
OutputStream |
setBinaryStream(long pos) |
int |
setBytes(long pos,
byte[] bytes) |
int |
setBytes(long pos,
byte[] bytes,
int offset,
int length) |
void |
truncate(long length) |
public InputStream getBinaryStream() throws SQLException
getBinaryStream
in interface Blob
SQLException
public byte[] getBytes(long pos, int length) throws SQLException
getBytes
in interface Blob
SQLException
public long length() throws SQLException
length
in interface Blob
SQLException
public long position(Blob pattern, long start) throws SQLException
position
in interface Blob
SQLException
public long position(byte[] pattern, long start) throws SQLException
position
in interface Blob
SQLException
public void free() throws SQLException
free
in interface Blob
SQLException
public InputStream getBinaryStream(long pos, long length) throws SQLException
getBinaryStream
in interface Blob
SQLException
public OutputStream setBinaryStream(long pos) throws SQLException
setBinaryStream
in interface Blob
SQLException
public int setBytes(long pos, byte[] bytes) throws SQLException
setBytes
in interface Blob
SQLException
public int setBytes(long pos, byte[] bytes, int offset, int length) throws SQLException
setBytes
in interface Blob
SQLException
public void truncate(long length) throws SQLException
truncate
in interface Blob
SQLException
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