Package com.github.toolarium.common.util

Class ChannelUtil

java.lang.Object

com.github.toolarium.common.util.ChannelUtil

public final class ChannelUtil
extends Object

The channel util class

Method Summary

Modifier and Type	Method	Description
long	channelCopy(InputStream src, OutputStream dest)	This method copies data from the src channel and writes it to the dest channel until EOF on src.
long	channelCopy(InputStream src, OutputStream dest, MessageDigest messageDigest)	This method copies data from the src channel and writes it to the dest channel until EOF on src.
long	channelCopy(ReadableByteChannel src, WritableByteChannel dest)	This method copies data from the src channel and writes it to the dest channel until EOF on src.
static ChannelUtil	getInstance()	Get the instance

Methods inherited from class java.lang.Object

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

Method Details

getInstance

public static ChannelUtil getInstance()

Get the instance

Returns:

the instance

channelCopy

public long channelCopy(InputStream src,
 OutputStream dest)
                 throws IOException

This method copies data from the src channel and writes it to the dest channel until EOF on src. This implementation makes use of compact() on the temp buffer to pack down the data if the buffer wasn't fully drained. This may result in data copying, but minimizes system calls. It also requires a cleanup loop to make sure all the data gets sent.

Parameters:

src - the source channel

dest - the destination channel

Returns:

the copied bytes

Throws:

IOException - in case of error

channelCopy

public long channelCopy(ReadableByteChannel src,
 WritableByteChannel dest)
                 throws IOException

This method copies data from the src channel and writes it to the dest channel until EOF on src. This implementation makes use of compact() on the temp buffer to pack down the data if the buffer wasn't fully drained. This may result in data copying, but minimizes system calls. It also requires a cleanup loop to make sure all the data gets sent.

Parameters:

src - the source channel

dest - the destination channel

Returns:

the copied bytes

Throws:

IOException - in case of error

channelCopy

public long channelCopy(InputStream src,
 OutputStream dest,
 MessageDigest messageDigest)
                 throws IOException

This method copies data from the src channel and writes it to the dest channel until EOF on src. This implementation makes use of compact() on the temp buffer to pack down the data if the buffer wasn't fully drained. This may result in data copying, but minimizes system calls. It also requires a cleanup loop to make sure all the data gets sent.

Parameters:

src - the source channel

dest - the destination channel

messageDigest - the message digest

Returns:

the copied bytes

Throws:

IOException - in case of error