Class MemoryAsset

java.lang.Object

org.jboss.shrinkwrap.api.asset.MemoryAsset

All Implemented Interfaces:

Closeable, AutoCloseable, ByteChannel, Channel, ReadableByteChannel, SeekableByteChannel, WritableByteChannel, Asset

Direct Known Subclasses:

MemoryNamedAsset

public class MemoryAsset
extends Object
implements Asset, SeekableByteChannel

An Asset implementation backed by an internal memory representation; able to be directly added to an Archive, and supports all operations designated by the NIO.2 SeekableByteChannel API. Thread-safe.

Author:

Andrew Lee Rubinger

Constructor Summary

Constructors

Constructor	Description
MemoryAsset()	Creates a new instance with internal memory buffer initially sized at 0 and at position 0, capable of holding a maximum of Integer.MAX_VALUE bytes.

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	isOpen()
InputStream	openStream()	Get an input stream for the resource content.
long	position()
SeekableByteChannel	position(long newPosition)
int	read(ByteBuffer dst)
long	size()
SeekableByteChannel	truncate(long size)
int	write(ByteBuffer src)

Methods inherited from class Object

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

Constructor Details

MemoryAsset

public MemoryAsset()

Creates a new instance with internal memory buffer initially sized at 0 and at position 0, capable of holding a maximum of Integer.MAX_VALUE bytes.

Method Details

isOpen

public boolean isOpen()

Specified by:

isOpen in interface Channel

See Also:

• Channel.isOpen()

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Channel

Specified by:

close in interface Closeable

Throws:

IOException

See Also:

• Channel.close()

read

public int read(ByteBuffer dst)
         throws IOException

Specified by:

read in interface ReadableByteChannel

Specified by:

read in interface SeekableByteChannel

Parameters:

dst - The buffer into which bytes are to be transferred

Returns:

The number of bytes read, or -1 if the end of the stream is reached

Throws:

IOException

See Also:

• SeekableByteChannel.read(java.nio.ByteBuffer)

write

public int write(ByteBuffer src)
          throws IOException

Specified by:

write in interface SeekableByteChannel

Specified by:

write in interface WritableByteChannel

Parameters:

src - The buffer from which bytes are to be written

Returns:

The number of bytes written

Throws:

IOException

See Also:

• SeekableByteChannel.write(java.nio.ByteBuffer)

position

public long position()
              throws IOException

Specified by:

position in interface SeekableByteChannel

Returns:

The current position in the channel

Throws:

IOException

See Also:

• SeekableByteChannel.position()

position

public SeekableByteChannel position(long newPosition)
                             throws IOException

Specified by:

position in interface SeekableByteChannel

Parameters:

newPosition -

Returns:

Throws:

IOException

See Also:

• SeekableByteChannel.position(long)

size

public long size()
          throws IOException

Specified by:

size in interface SeekableByteChannel

Returns:

Throws:

IOException

See Also:

• SeekableByteChannel.size()

truncate

public SeekableByteChannel truncate(long size)

Specified by:

truncate in interface SeekableByteChannel

Parameters:

size -

Returns:

See Also:

• SeekableByteChannel.truncate(long)

openStream

public InputStream openStream()

Get an input stream for the resource content. The caller is responsible for closing the stream.

Specified by:

openStream in interface Asset

Returns:

A new open InputStream for each call

See Also:

• Asset.openStream()