org.apache.derby.iapi.types
Class HarmonySerialBlob

java.lang.Object
  org.apache.derby.iapi.types.HarmonySerialBlob

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.sql.Blob

public class HarmonySerialBlob
extends java.lang.Object
implements java.sql.Blob, java.io.Serializable, java.lang.Cloneable

Copied from the Harmony project's implementation of javax.sql.rowset.serial.SerialBlob at subversion revision 946981.

See Also:

Serialized Form

Field Summary

private java.sql.Blob	blob
private byte[]	buf
private long	len
private long	origLen
private static long	serialVersionUID

Constructor Summary

HarmonySerialBlob(java.sql.Blob blob)
Constructs an instance by the given blob

HarmonySerialBlob(byte[] buf)
Constructs an instance by the given buf

Method Summary

void	free()
java.io.InputStream	getBinaryStream() Returns an input stream of this SerialObject.
java.io.InputStream	getBinaryStream(long pos, long length)
byte[]	getBytes(long pos, int length) Returns a copied array of this SerialObject, starting at the pos with the given length number.
long	length() Gets the number of bytes in this SerialBlob object.
static java.sql.SQLException	makeSQLException(java.lang.String messageID, java.lang.Object[] args) Create a SQLException from Derby message arguments.
private boolean	match(byte[] bytes, int start, byte[] subBytes)
long	position(java.sql.Blob pattern, long start) Search for the position in this Blob at which a specified pattern begins, starting at a specified position within the Blob.
long	position(byte[] pattern, long start) Search for the position in this Blob at which the specified pattern begins, starting at a specified position within the Blob.
java.io.OutputStream	setBinaryStream(long pos)
int	setBytes(long pos, byte[] theBytes)
int	setBytes(long pos, byte[] theBytes, int offset, int length)
void	truncate(long length)

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

buf

private byte[] buf

blob

private java.sql.Blob blob

len

private long len

origLen

private long origLen

Constructor Detail

HarmonySerialBlob

public HarmonySerialBlob(java.sql.Blob blob)
                  throws java.sql.SQLException

Constructs an instance by the given blob

Parameters:

blob - the given blob

Throws:

java.sql.SQLException - if an error is encountered during serialization

java.sql.SQLException - if blob is null

HarmonySerialBlob

public HarmonySerialBlob(byte[] buf)

Constructs an instance by the given buf

Parameters:

buf - the given buffer

Throws:

java.sql.SQLException - if an error is encountered during serialization

java.sql.SQLException - if a SQL error is encountered

Method Detail

getBinaryStream

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

Returns an input stream of this SerialObject.

Specified by:

getBinaryStream in interface java.sql.Blob

Throws:

java.sql.SQLException - if an error is encountered

getBytes

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

Returns a copied array of this SerialObject, starting at the pos with the given length number. If pos + length - 1 is larger than the length of this SerialObject array, the length will be shortened to the length of array - pos + 1.

Specified by:

getBytes in interface java.sql.Blob

Parameters:

pos - the starting position of the array to be copied.

length - the total length of bytes to be copied

Throws:

java.sql.SQLException - if an error is encountered

length

public long length()
            throws java.sql.SQLException

Gets the number of bytes in this SerialBlob object.

Specified by:

length in interface java.sql.Blob

Returns:

an long value with the length of the SerialBlob in bytes

Throws:

java.sql.SQLException - if an error is encoutnered

position

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

Search for the position in this Blob at which a specified pattern begins, starting at a specified position within the Blob.

Specified by:

position in interface java.sql.Blob

Parameters:

pattern - a Blob containing the pattern of data to search for in this Blob

start - the position within this Blob to start the search, where the first position in the Blob is 1

Returns:

a long value with the position at which the pattern begins. -1 if the pattern is not found in this Blob.

Throws:

java.sql.SQLException - if an error occurs accessing the Blob

java.sql.SQLException - if an error is encountered

position

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

Search for the position in this Blob at which the specified pattern begins, starting at a specified position within the Blob.

Specified by:

position in interface java.sql.Blob

Parameters:

pattern - a byte array containing the pattern of data to search for in this Blob

start - the position within this Blob to start the search, where the first position in the Blob is 1

Returns:

a long value with the position at which the pattern begins. -1 if the pattern is not found in this Blob.

Throws:

java.sql.SQLException - if an error is encountered

java.sql.SQLException - if an error occurs accessing the Blob

match

private boolean match(byte[] bytes,
                      int start,
                      byte[] subBytes)

setBinaryStream

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

Specified by:

setBinaryStream in interface java.sql.Blob

Throws:

java.sql.SQLException

setBytes

public int setBytes(long pos,
                    byte[] theBytes)
             throws java.sql.SQLException

Specified by:

setBytes in interface java.sql.Blob

Throws:

java.sql.SQLException

setBytes

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

Specified by:

setBytes in interface java.sql.Blob

Throws:

java.sql.SQLException

truncate

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

Specified by:

truncate in interface java.sql.Blob

Throws:

java.sql.SQLException

free

public void free()
          throws java.sql.SQLException

Specified by:

free in interface java.sql.Blob

Throws:

java.sql.SQLException

getBinaryStream

public java.io.InputStream getBinaryStream(long pos,
                                           long length)
                                    throws java.sql.SQLException

Specified by:

getBinaryStream in interface java.sql.Blob

Throws:

java.sql.SQLException

makeSQLException

public static java.sql.SQLException makeSQLException(java.lang.String messageID,
                                                     java.lang.Object[] args)

Create a SQLException from Derby message arguments.