com.aliyun.oss.crypto

Class AdjustedRangeInputStream

java.lang.Object

java.io.InputStream

com.aliyun.oss.crypto.AdjustedRangeInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class AdjustedRangeInputStream
extends InputStream

Reads only a specific range of bytes from the underlying input stream.

Constructor Summary

Constructors

Constructor and Description
AdjustedRangeInputStream(InputStream objectContents, long rangeBeginning, long rangeEnd) Creates a new DecryptedContentsInputStream object.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	abortIfNeeded() Aborts the inputstream operation if thread is interrupted.
int	available()
void	close()
InputStream	getWrappedInputStream()
int	read()
int	read(byte[] buffer, int offset, int length)

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

AdjustedRangeInputStream

public AdjustedRangeInputStream(InputStream objectContents,
                        long rangeBeginning,
                        long rangeEnd)
                         throws IOException

Creates a new DecryptedContentsInputStream object.

Parameters:

objectContents - The input stream containing the object contents retrieved from OSS

rangeBeginning - The position of the left-most byte desired by the user

rangeEnd - The position of the right-most byte desired by the user

Throws:

IOException - If there are errors skipping to the left-most byte desired by the user.

Method Detail

abortIfNeeded

protected final void abortIfNeeded()

Aborts the inputstream operation if thread is interrupted. interrupted status of the thread is cleared by this method.

Throws:

ClientException - with ClientErrorCode INPUTSTREAM_READING_ABORTED if thread aborted.

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] buffer,
       int offset,
       int length)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

Throws:

IOException

getWrappedInputStream

public InputStream getWrappedInputStream()