java.sql
Interface Blob
This interface specified methods for accessing a SQL BLOB (Binary Large
OBject) type.
InputStream | getBinaryStream()- This method returns a stream that will read the bytes of this
Blob.
|
byte[] | getBytes(long start, int count)- This method returns up to the requested bytes of this
Blob
as a byte array.
|
long | length()- This method returns the number of bytes in this
Blob.
|
long | position(byte[] pattern, long start)- This method returns the index into this
Blob at which the
first instance of the specified bytes occur.
|
long | position(Blob pattern, long start)- This method returns the index into this
Blob at which the
first instance of the specified pattern occurs.
|
OutputStream | setBinaryStream(long start)- Returns a binary stream that writes into this
Blob,
starting at the specified index.
|
int | setBytes(long start, byte[] bytes)- Writes the specified data into this
Blob, starting at the
specified index.
|
int | setBytes(long startWrite, byte[] bytes, int startRead, int count)- Writes a portion of the specified data into this
Blob,
starting at the specified index.
|
void | truncate(long count)- Truncates this
Blob to be at most the specified number of
bytes long.
|
getBytes
public byte[] getBytes(long start,
int count)
throws SQLException This method returns up to the requested bytes of this Blob
as a byte array.
start - The index into this Blob to start returning
bytes from.count - The requested number of bytes to return.
- The requested bytes from this
Blob.
length
public long length()
throws SQLException This method returns the number of bytes in this Blob.
- The number of bytes in this
Blob.
position
public long position(byte[] pattern,
long start)
throws SQLException This method returns the index into this Blob at which the
first instance of the specified bytes occur. The searching starts at the
specified index into this Blob.
pattern - The byte pattern to search for.start - The index into this Blob to start searching for
the pattern.
- The offset at which the pattern is first found, or -1 if the
pattern is not found.
position
public long position(Blob pattern,
long start)
throws SQLException This method returns the index into this Blob at which the
first instance of the specified pattern occurs. The searching starts at the
specified index into this Blob. The bytes in the specified
Blob are used as the search pattern.
pattern - The Blob containing the byte pattern to
search for.start - The index into this Blob to start searching for
the pattern.
- The offset at which the pattern is first found, or -1 if the
pattern is not found.
setBinaryStream
public OutputStream setBinaryStream(long start)
throws SQLException Returns a binary stream that writes into this Blob,
starting at the specified index.
start - The index at which the writing starts.
- A binary stream to write into this
Blob.
setBytes
public int setBytes(long start,
byte[] bytes)
throws SQLException Writes the specified data into this Blob, starting at the
specified index.
start - The index at which the writing starts.bytes - The data to write.
setBytes
public int setBytes(long startWrite,
byte[] bytes,
int startRead,
int count)
throws SQLException Writes a portion of the specified data into this Blob,
starting at the specified index.
startWrite - The index into this Blob at which writing
starts.bytes - The data to write a portion of.startRead - The offset into the data where the portion to copy starts.count - The number of bytes to write.
truncate
public void truncate(long count)
throws SQLException Truncates this Blob to be at most the specified number of
bytes long.
count - The length this Blob is truncated to.
Blob.java -- Access a SQL Binary Large OBject.
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