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Préférences
Moteurs de recherche
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JavaTM 2 Platform Std. Ed. v1.5.0
java.sql
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Method Summary | |
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InputStream |
getBinaryStream()
Retrieves the BLOB value designated by this
Blob instance as a stream. |
byte[] |
getBytes(long pos,
int length)
Retrieves all or part of the BLOB
value that this Blob object represents, as an array of
bytes. |
long |
length()
Returns the number of bytes in the BLOB value
designated by this Blob object. |
long |
position(Blob pattern,
long start)
Retrieves the byte position in the BLOB value
designated by this Blob object at which
pattern begins. |
long |
position(byte[] pattern,
long start)
Retrieves the byte position at which the specified byte array pattern begins within the BLOB
value that this Blob object represents. |
OutputStream |
setBinaryStream(long pos)
Retrieves a stream that can be used to write to the BLOB
value that this Blob object represents. |
int |
setBytes(long pos,
byte[] bytes)
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. |
int |
setBytes(long pos,
byte[] bytes,
int offset,
int len)
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. |
void |
truncate(long len)
Truncates the BLOB value that this Blob
object represents to be len bytes in length. |
Method Detail |
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long length() throws SQLException
BLOB
value
designated by this Blob
object.
BLOB
in bytes
SQLException
- if there is an error accessing the
length of the BLOB
byte[] getBytes(long pos, int length) throws SQLException
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
.
pos
- the ordinal position of the first byte in the
BLOB
value to be extracted; the first byte is at
position 1length
- the number of consecutive bytes to be copied
length
consecutive bytes from the BLOB
value designated
by this Blob
object, starting with the
byte at position pos
SQLException
- if there is an error accessing the
BLOB
valuesetBytes(long, byte[])
InputStream getBinaryStream() throws SQLException
BLOB
value designated by this
Blob
instance as a stream.
BLOB
data
SQLException
- if there is an error accessing the
BLOB
valuesetBinaryStream(long)
long position(byte[] pattern, long start) throws SQLException
pattern
begins within the BLOB
value that this Blob
object represents. The
search for pattern
begins at position
start
.
pattern
- the byte array for which to searchstart
- the position at which to begin searching; the
first position is 1
SQLException
- if there is an error accessing the
BLOB
long position(Blob pattern, long start) throws SQLException
BLOB
value
designated by this Blob
object at which
pattern
begins. The search begins at position
start
.
pattern
- the Blob
object designating
the BLOB
value for which to searchstart
- the position in the BLOB
value
at which to begin searching; the first position is 1
SQLException
- if there is an error accessing the
BLOB
valueint setBytes(long pos, byte[] bytes) throws SQLException
BLOB
value that
this Blob
object represents, starting at position
pos
, and returns the number of bytes written.
pos
- the position in the BLOB
object at which
to start writingbytes
- the array of bytes to be written to the BLOB
value that this Blob
object represents
SQLException
- if there is an error accessing the
BLOB
valuegetBytes(long, int)
int setBytes(long pos, byte[] bytes, int offset, int len) throws SQLException
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.
pos
- the position in the BLOB
object at which
to start writingbytes
- the array of bytes to be written to this BLOB
objectoffset
- the offset into the array bytes
at which
to start reading the bytes to be setlen
- the number of bytes to be written to the BLOB
value from the array of bytes bytes
SQLException
- if there is an error accessing the
BLOB
valuegetBytes(long, int)
OutputStream setBinaryStream(long pos) throws SQLException
BLOB
value that this Blob
object represents. The stream begins
at position pos
.
pos
- the position in the BLOB
value at which
to start writing
java.io.OutputStream
object to which data can
be written
SQLException
- if there is an error accessing the
BLOB
valuegetBinaryStream()
void truncate(long len) throws SQLException
BLOB
value that this Blob
object represents to be len
bytes in length.
len
- the length, in bytes, to which the BLOB
value
that this Blob
object represents should be truncated
SQLException
- if there is an error accessing the
BLOB
value