Package org.duracloud.chunk.stream

Class ChunkInputStream

java.lang.Object

java.io.InputStream

org.duracloud.chunk.stream.ChunkInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class ChunkInputStream
extends InputStream

This class provides the ability to limit the number of bytes read from the provided InputStream to maxChunkSize.

Author:

Andrew Woods Date: Feb 2, 2010

Constructor Summary

Constructors

Constructor	Description
ChunkInputStream(String chunkId, InputStream inputStream, long chunkSize, boolean preserveMD5)

Method Summary

Modifier and Type	Method	Description
void	close()
String	getChunkId()
long	getChunkSize()
String	getMD5()
String	getMimetype()
boolean	md5Preserved()
long	numBytesRead()
int	read()	This method reads up to chunkSize number of bytes from the stream.
int	read(byte[] b)
int	read(byte[] b, int off, int len)

Methods inherited from class java.io.InputStream

available, mark, markSupported, nullInputStream, readAllBytes, readNBytes, readNBytes, reset, skip, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

ChunkInputStream

public ChunkInputStream(String chunkId,
                        InputStream inputStream,
                        long chunkSize,
                        boolean preserveMD5)

Method Detail

read

public int read()
         throws IOException

This method reads up to chunkSize number of bytes from the stream. When either chunkSize bytes have been read, or the end of the stream is reached, -1 is return.

Specified by:

read in class InputStream

Returns:

current byte or -1 if eof reached

Throws:

IOException - on error

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

getMD5

public String getMD5()

numBytesRead

public long numBytesRead()

getChunkId

public String getChunkId()

getMimetype

public String getMimetype()

getChunkSize

public long getChunkSize()

md5Preserved

public boolean md5Preserved()