depends.org.apache.http.impl.nio.codecs

类 IdentityDecoder

java.lang.Object

depends.org.apache.http.impl.nio.codecs.AbstractContentDecoder

depends.org.apache.http.impl.nio.codecs.IdentityDecoder

所有已实现的接口:

ContentDecoder, FileContentDecoder

@NotThreadSafe
public class IdentityDecoder
extends AbstractContentDecoder
implements FileContentDecoder

Content decoder that reads data without any transformation. The end of the content entity is delineated by closing the underlying connection (EOF condition). Entities transferred using this input stream can be of unlimited length.

This decoder is optimized to transfer data directly from the underlying I/O session's channel to a FileChannel, whenever possible avoiding intermediate buffering in the session buffer.

从以下版本开始:

4.0

字段概要

从类继承的字段 depends.org.apache.http.impl.nio.codecs.AbstractContentDecoder

buffer, channel, completed, metrics

构造器概要

构造器

构造器和说明
IdentityDecoder(java.nio.channels.ReadableByteChannel channel, SessionInputBuffer buffer, HttpTransportMetricsImpl metrics)

方法概要

方法

限定符和类型	方法和说明
int	read(java.nio.ByteBuffer dst) Reads a portion of content from the underlying channel
void	setCompleted(boolean completed) Sets the completed status of this decoder.
java.lang.String	toString()
long	transfer(java.nio.channels.FileChannel dst, long position, long count) Transfers a portion of entity content from the underlying network channel into the given file channel.

从类继承的方法 depends.org.apache.http.impl.nio.codecs.AbstractContentDecoder

fillBufferFromChannel, isCompleted, readFromChannel, readFromChannel

从类继承的方法 java.lang.Object

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

从接口继承的方法 depends.org.apache.http.nio.ContentDecoder

isCompleted

构造器详细资料

IdentityDecoder

public IdentityDecoder(java.nio.channels.ReadableByteChannel channel,
               SessionInputBuffer buffer,
               HttpTransportMetricsImpl metrics)

方法详细资料

setCompleted

public void setCompleted(boolean completed)

Sets the completed status of this decoder. Normally this is not necessary (the decoder will automatically complete when the underlying channel returns EOF). It is useful to mark the decoder as completed if you have some extension means to know all the necessary data has been read and want to reuse the underlying connection for more messages.

read

public int read(java.nio.ByteBuffer dst)
         throws java.io.IOException

从接口复制的说明: ContentDecoder

Reads a portion of content from the underlying channel

指定者:

read 在接口中 ContentDecoder

参数:

dst - The buffer into which entity content is to be transferred

返回:

The number of bytes read, possibly zero, or -1 if the channel has reached end-of-stream

抛出:

java.io.IOException - if I/O error occurs while reading content

transfer

public long transfer(java.nio.channels.FileChannel dst,
            long position,
            long count)
              throws java.io.IOException

从接口复制的说明: FileContentDecoder

Transfers a portion of entity content from the underlying network channel into the given file channel.
Warning: Many implementations cannot write beyond the length of the file. If the position exceeds the channel's size, some implementations may throw an IOException.

指定者:

transfer 在接口中 FileContentDecoder

参数:

dst - the target FileChannel to transfer data into.

position - The position within the file at which the transfer is to begin; must be non-negative. Must be less than or equal to the size of the file

count - The maximum number of bytes to be transferred; must be non-negative

返回:

The number of bytes, possibly zero, that were actually transferred

抛出:

java.io.IOException

toString

public java.lang.String toString()

覆盖:

toString 在类中 java.lang.Object