Blob JDK 1.6)

public void free () throws SQLException

This method frees the Blob object and releases the resources that it holds.

This method frees the Blob object and releases the resources that it holds. The object is invalid once the free method is called.

After free has been called, any attempt to invoke a method other than free will result in a SQLException being thrown. If free is called multiple times, the subsequent calls to free are treated as a no-op.

Throws:
- SQLException - if an error occurs releasing the Blob's resources
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.6

public InputStream getBinaryStream () throws SQLException

Retrieves the BLOB value designated by this Blob instance as a stream.

Retrieves the BLOB value designated by this
Blob instance as a stream.
Returns: a stream containing the BLOB data
Throws:
- SQLException - if there is an error accessing the BLOB value
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.2
See Also: Blob.setBinaryStream(long),

public InputStream getBinaryStream (long pos, long length) throws SQLException

Returns an InputStream object that contains a partial Blob value, starting with the byte specified by pos, which is length bytes in length.

Returns an InputStream object that contains a partial Blob value,
starting with the byte specified by pos, which is length bytes in length.
Returns: InputStream through which the partial Blob value can be read.
Parameters:
- pos - the offset to the first byte of the partial value to be retrieved. The first byte in the Blob is at position 1
- length - the length in bytes of the partial value to be retrieved
Throws:
- SQLException - if pos is less than 1 or if pos is greater than the number of bytes in the Blob or if pos + length is greater than the number of bytes in the Blob
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.6

public byte getBytes (long pos, int length) throws SQLException

Retrieves all or part of the BLOB value that this Blob object represents, as an array of bytes.

Retrieves all or part of the BLOB
value that this Blob object represents, as an array of
bytes. This byte array contains up to length
consecutive bytes starting at position pos.
Returns: a byte array containing up to length consecutive bytes from the BLOB value designated by this Blob object, starting with the byte at position pos
Parameters:
- pos - the ordinal position of the first byte in the BLOB value to be extracted; the first byte is at position 1
- length - the number of consecutive bytes to be copied; the value for length must be 0 or greater
Throws:
- SQLException - if there is an error accessing the BLOB value; if pos is less than 1 or length is less than 0
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.2
See Also: Blob.setBytes(long, byte[]),

public long length () throws SQLException

Returns the number of bytes in the BLOB value designated by this Blob object.

Returns the number of bytes in the BLOB value
designated by this Blob object.
Returns: length of the BLOB in bytes
Throws:
- SQLException - if there is an error accessing the length of the BLOB
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.2

public long position (Blob pattern, long start) throws SQLException

Retrieves the byte position in the BLOB value designated by this Blob object at which pattern begins.

Retrieves the byte position in the BLOB value
designated by this Blob object at which
pattern begins. The search begins at position
start.
Returns: the position at which the pattern begins, else -1
Parameters:
- pattern - the Blob object designating the BLOB value for which to search
- start - the position in the BLOB value at which to begin searching; the first position is 1
Throws:
- SQLException - if there is an error accessing the BLOB value or if start is less than 1
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.2

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

Retrieves the byte position at which the specified byte array pattern begins within the BLOB value that this Blob object represents.

Retrieves the byte position at which the specified byte array
pattern begins within the BLOB
value that this Blob object represents. The
search for pattern begins at position
start.
Returns: the position at which the pattern appears, else -1
Parameters:
- pattern - the byte array for which to search
- start - the position at which to begin searching; the first position is 1
Throws:
- SQLException - if there is an error accessing the BLOB or if start is less than 1
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.2

public OutputStream setBinaryStream (long pos) throws SQLException

Retrieves a stream that can be used to write to the BLOB value that this Blob object represents.

Retrieves a stream that can be used to write to the BLOB value that this Blob object represents. The stream begins at position pos. The bytes written to the stream will overwrite the existing bytes in the Blob object starting at the position pos. If the end of the Blob value is reached while writing to the stream, then the length of the Blob value will be increased to accomodate the extra bytes.

Note: If the value specified for pos is greater then the length+1 of the BLOB value then the behavior is undefined. Some JDBC drivers may throw a SQLException while other drivers may support this operation.
Returns: a java.io.OutputStream object to which data can be written
Parameters:
- pos - the position in the BLOB value at which to start writing; the first position is 1
Throws:
- SQLException - if there is an error accessing the BLOB value or if pos is less than 1
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.4
See Also: Blob.getBinaryStream(),

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

Writes the given array of bytes to the BLOB value that this Blob object represents, starting at position pos, and returns the number of bytes written.

Writes the given array of bytes to the BLOB value that this Blob object represents, starting at position pos, and returns the number of bytes written. The array of bytes will overwrite the existing bytes in the Blob object starting at the position pos. If the end of the Blob value is reached while writing the array of bytes, then the length of the Blob value will be increased to accomodate the extra bytes.

Note: If the value specified for pos is greater then the length+1 of the BLOB value then the behavior is undefined. Some JDBC drivers may throw a SQLException while other drivers may support this operation.
Returns: the number of bytes written
Parameters:
- pos - the position in the BLOB object at which to start writing; the first position is 1
- bytes - the array of bytes to be written to the BLOB value that this Blob object represents
Throws:
- SQLException - if there is an error accessing the BLOB value or if pos is less than 1
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.4
See Also: Blob.getBytes(long, int),

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

Writes all or part of the given byte array to the BLOB value that this Blob object represents and returns the number of bytes written.

Writes all or part of the given byte array to the BLOB value that this Blob object represents and returns the number of bytes written. Writing starts at position pos in the BLOB value; len bytes from the given byte array are written. The array of bytes will overwrite the existing bytes in the Blob object starting at the position pos. If the end of the Blob value is reached while writing the array of bytes, then the length of the Blob value will be increased to accomodate the extra bytes.

Note: If the value specified for pos is greater then the length+1 of the BLOB value then the behavior is undefined. Some JDBC drivers may throw a SQLException while other drivers may support this operation.
Returns: the number of bytes written
Parameters:
- pos - the position in the BLOB object at which to start writing; the first position is 1
- bytes - the array of bytes to be written to this BLOB object
- offset - the offset into the array bytes at which to start reading the bytes to be set
- len - the number of bytes to be written to the BLOB value from the array of bytes bytes
Throws:
- SQLException - if there is an error accessing the BLOB value or if pos is less than 1
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.4
See Also: Blob.getBytes(long, int),

public void truncate (long len) throws SQLException

Truncates the BLOB value that this Blob object represents to be len bytes in length.

Note: If the value specified for pos is greater then the length+1 of the BLOB value then the behavior is undefined. Some JDBC drivers may throw a SQLException while other drivers may support this operation.
Parameters:
- len - the length, in bytes, to which the BLOB value that this Blob object represents should be truncated
Throws:
- SQLException - if there is an error accessing the BLOB value or if len is less than 0
- SQLFeatureNotSupportedException - if the JDBC driver does not support this method
Since: 1.4