SQLite

Class Blob

java.lang.Object

SQLite.Blob

public class Blob
extends java.lang.Object

Class to represent SQLite3 3.4.0 incremental blob I/O interface. Note, that all native methods of this class are not synchronized, i.e. it is up to the caller to ensure that only one thread is in these methods at any one time.

Field Summary

Fields

Modifier and Type	Field and Description
private long	handle Internal handle for the SQLite3 blob.
protected int	size Cached size of blob, setup right after blob has been opened.

Constructor Summary

Constructors

Constructor and Description
Blob()

Method Summary

Modifier and Type	Method and Description
void	close() Close blob.
protected void	finalize() Destructor for object.
java.io.InputStream	getInputStream() Return InputStream for this blob
java.io.OutputStream	getOutputStream() Return OutputStream for this blob
private static void	internal_init() Internal native initializer.
(package private) int	read(byte[] b, int off, int pos, int len) Internal blob read method.
(package private) int	write(byte[] b, int off, int pos, int len) Internal blob write method.

Methods inherited from class java.lang.Object

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

Field Detail

handle

private long handle

Internal handle for the SQLite3 blob.

size

protected int size

Cached size of blob, setup right after blob has been opened.

Constructor Detail

Blob

public Blob()

Method Detail

close

public void close()

Close blob.

finalize

protected void finalize()

Destructor for object.

Overrides:

finalize in class java.lang.Object

getInputStream

public java.io.InputStream getInputStream()

Return InputStream for this blob

Returns:

InputStream

getOutputStream

public java.io.OutputStream getOutputStream()

Return OutputStream for this blob

Returns:

OutputStream

internal_init

private static void internal_init()

Internal native initializer.

read

int read(byte[] b,
         int off,
         int pos,
         int len)
  throws java.io.IOException

Internal blob read method.

Parameters:

b - byte array to be written

off - offset into byte array

pos - offset into blob

len - length to be written

Returns:

number of bytes written to blob

Throws:

java.io.IOException - on I/O error

write

int write(byte[] b,
          int off,
          int pos,
          int len)
   throws java.io.IOException

Internal blob write method.

Parameters:

b - byte array to be written

off - offset into byte array

pos - offset into blob

len - length to be written

Returns:

number of bytes written to blob

Throws:

java.io.IOException - on I/O error