org.firebirdsql.jdbc
Class FBCachedBlob

java.lang.Object
  org.firebirdsql.jdbc.FBCachedBlob

All Implemented Interfaces:

java.sql.Blob

public class FBCachedBlob

extends java.lang.Object

implements java.sql.Blob

This class represents a cached blob field.

Constructor Summary

FBCachedBlob(byte[] data)
Create an instance using the cached data.

Method Summary

java.io.InputStream	getBinaryStream() Get contents of blob as binary stream.
byte[]	getBytes(long pos, int length) Get part of the blob field.
long	length() Get the length of the cached blob field.
long	position(java.sql.Blob pattern, long start) Find the first entry of the specified pattern.
long	position(byte[] pattern, long start) Find the first entry of the specified pattern.
java.io.OutputStream	setBinaryStream(long pos) Set the contents of blob as binary stream.
int	setBytes(long l, byte[] abyte0) Set contents of the blob.
int	setBytes(long l, byte[] abyte0, int i, int j) Set the contents of blob.
void	truncate(long length) Truncate the blob to specified length.

Methods inherited from class java.lang.Object

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

Constructor Detail

FBCachedBlob

public FBCachedBlob(byte[] data)

Create an instance using the cached data.

Parameters:

data - array of bytes containing the cached data.

Method Detail

length

public long length()
            throws java.sql.SQLException

Get the length of the cached blob field.

Specified by:

length in interface java.sql.Blob

Returns:

length of the cached blob field or -1 if the field is null.

Throws:

java.sql.SQLException

getBytes

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

Get part of the blob field.

Specified by:

getBytes in interface java.sql.Blob

Parameters:

pos - starting position to copy.

length - amount of bytes to copy.

Throws:

java.sql.SQLException

position

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

Find the first entry of the specified pattern.

Specified by:

position in interface java.sql.Blob

Throws:

java.sql.SQLException - always, not yet implemented.

position

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

Find the first entry of the specified pattern.

Specified by:

position in interface java.sql.Blob

Throws:

java.sql.SQLException - always, not yet implemented.

getBinaryStream

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

Get contents of blob as binary stream.

Specified by:

getBinaryStream in interface java.sql.Blob

Throws:

java.sql.SQLException

setBytes

public int setBytes(long l,
                    byte[] abyte0)
             throws java.sql.SQLException

Set contents of the blob.

Specified by:

setBytes in interface java.sql.Blob

Throws:

java.sql.SQLException - always, set methods are not relevant in cached state.

setBytes

public int setBytes(long l,
                    byte[] abyte0,
                    int i,
                    int j)
             throws java.sql.SQLException

Set the contents of blob.

Specified by:

setBytes in interface java.sql.Blob

Throws:

java.sql.SQLException - always, set methods are not relevant in cached state.

setBinaryStream

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

Set the contents of blob as binary stream.

Specified by:

setBinaryStream in interface java.sql.Blob

Throws:

java.sql.SQLException - always, set methods are not relevant in cached state.

truncate

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

Truncate the blob to specified length.

Specified by:

truncate in interface java.sql.Blob

Throws:

java.sql.SQLException - always, truncate is not relevant in cached state.