Class MyBlob

java.lang.Object
  |
  +--MyBlob

public class MyBlob

extends java.lang.Object

A class used as an SQL blob object.

Field Summary

protected byte[]	data the byte array that stores the actual data
static int	MAXLEN the capacity of a single blob
protected MyBlob	next a pointer to another blob to form a linked list

Constructor Summary

MyBlob(byte[] buf, int len)
initialize a blob

Method Summary

MyBlob	append(byte[] buf, int len) Append a byte array to the end of the existing array.
java.io.InputStream	getBinaryStream() get input of the blob in the form of a binary stream
byte[]	getData() get the actual data
MyBlob	getNext() get the next node in the linked list
int	length() get the length of data

Methods inherited from class java.lang.Object

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

Field Detail

MAXLEN

public static int MAXLEN

the capacity of a single blob

data

protected byte[] data

the byte array that stores the actual data

next

protected MyBlob next

a pointer to another blob to form a linked list

Constructor Detail

MyBlob

public MyBlob(byte[] buf,
              int len)

initialize a blob

Parameters:

buf - data to be stored

len - the length of data to be stored

Method Detail

append

public MyBlob append(byte[] buf,
                     int len)

Append a byte array to the end of the existing array. If a blob cannot hold the data, another blob will be used.

Parameters:

buf - the array to append.

len - the number of bytes to append.

Returns:

MyBlob the last blob in the linked list

length

public int length()

get the length of data

Returns:

data length in bytes

getData

public byte[] getData()

get the actual data

Returns:

the stored data in a byte array

getNext

public MyBlob getNext()

get the next node in the linked list

Returns:

the next blob object in the list

getBinaryStream

public java.io.InputStream getBinaryStream()

get input of the blob in the form of a binary stream

Returns:

the InputStream from the blob