com.imagero.uio.bio.content
Class Content

java.lang.Object
  com.imagero.uio.bio.content.Content

Direct Known Subclasses:

ByteArrayContent, CharArrayContent, DoubleArrayContent, DummyContent, FileCachedInputStreamContent, FloatArrayContent, HTTPContent, IntArrayContent, LongArrayContent, MemoryCachedInputStreamContent, RandomAccessFileContent, RandomAccessIOContent, ShortArrayContent, SynchronizedContent

public abstract class Content

extends java.lang.Object

Constructor Summary

Content()

Method Summary

abstract boolean	canReload() Determine if data may be reloaded or not.
abstract void	close() close stream
protected void	finalize()
abstract long	length() Get stream length.
int	load(long offset, byte[] buffer) Load stream content to specified buffer
abstract int	load(long offset, int bpos, byte[] buffer) Load stream content to specified buffer
abstract void	save(long offset, int bpos, byte[] buffer, int length) Save buffer content to stream.
abstract boolean	writable()

Methods inherited from class java.lang.Object

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

Constructor Detail

Content

public Content()

Method Detail

load

public final int load(long offset,
                      byte[] buffer)
               throws java.io.IOException

Load stream content to specified buffer

Parameters:

offset - stream offset

buffer - byte array

Returns:

how much bytes were loaded

Throws:

java.io.IOException

load

public abstract int load(long offset,
                         int bpos,
                         byte[] buffer)
                  throws java.io.IOException

Load stream content to specified buffer

Parameters:

offset - stream offset

bpos - buffer position

buffer - byte array

Returns:

how much bytes were loaded

Throws:

java.io.IOException

save

public abstract void save(long offset,
                          int bpos,
                          byte[] buffer,
                          int length)
                   throws java.io.IOException

Save buffer content to stream. Not always supported.

Parameters:

offset - stream offset

bpos - buffer position

buffer - byte array

length - how much bytes should be saved

Throws:

java.io.IOException

length

public abstract long length()
                     throws java.io.IOException

Get stream length. Not always known.

Returns:

Throws:

java.io.IOException

close

public abstract void close()

close stream

canReload

public abstract boolean canReload()

Determine if data may be reloaded or not. For example: data from InputStream cannot be reloaded, however if content uses file or memory based cache then it is possible to reload data.

Returns:

true if data can be reloaded.

writable

public abstract boolean writable()

finalize

protected void finalize()
                 throws java.lang.Throwable

Throws:

java.lang.Throwable