org.aoju.bus.core.io

Class WriteBuffer

java.lang.Object

java.io.OutputStream

org.aoju.bus.core.io.WriteBuffer

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public final class WriteBuffer
extends OutputStream

包装当前会话分配到的虚拟Buffer,提供流式操作方式

Since:

JDK 1.8+

Version:

6.3.5

Author:

Kimi Liu

Constructor Summary

Constructors

Constructor and Description
WriteBuffer(PageBuffer pageBuffer, Consumer<WriteBuffer> consumer, int chunkSize, int capacity)

Method Summary

Modifier and Type	Method and Description
void	close()
void	flush()
boolean	isEmpty() 是否存在待输出的数据
VirtualBuffer	poll() 获取并移除当前缓冲队列中头部的VirtualBuffer
VirtualBuffer	pollItem()
void	write(byte[] b, int off, int len)
void	write(ByteBuffer buffer)
void	write(int b) 按照OutputStream.write(int)规范：要写入的字节是参数 b 的八个低位。 b 的 24 个高位将被忽略。 而使用该接口时容易传入非byte范围内的数据，接口定义与实际使用出现歧义的可能性较大，故建议废弃该方法，选用writeByte(byte)。
void	write(VirtualBuffer virtualBuffer)
void	writeAndFlush(byte[] b) 写入内容并刷新缓冲区
void	writeAndFlush(byte[] b, int off, int len)
void	writeByte(byte b)
void	writeInt(int v) 输出int数值,占用4个字节
void	writeLong(long v) 输出long数值,占用8个字节
void	writeShort(short v) 输出一个short类型的数据

Methods inherited from class java.io.OutputStream

write

Methods inherited from class java.lang.Object

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

Constructor Detail

WriteBuffer

public WriteBuffer(PageBuffer pageBuffer,
                   Consumer<WriteBuffer> consumer,
                   int chunkSize,
                   int capacity)

Method Detail

write

public void write(int b)

按照OutputStream.write(int)规范：要写入的字节是参数 b 的八个低位。 b 的 24 个高位将被忽略。 而使用该接口时容易传入非byte范围内的数据，接口定义与实际使用出现歧义的可能性较大，故建议废弃该方法，选用writeByte(byte)。

Specified by:

write in class OutputStream

Parameters:

b - 输出字节

writeShort

public void writeShort(short v)
                throws IOException

输出一个short类型的数据

Parameters:

v - short数值

Throws:

IOException - IO异常

writeByte

public void writeByte(byte b)

Parameters:

b - 待输出数值

See Also:

write(int)

writeInt

public void writeInt(int v)
              throws IOException

输出int数值,占用4个字节

Parameters:

v - int数值

Throws:

IOException - IO异常

writeLong

public void writeLong(long v)
               throws IOException

输出long数值,占用8个字节

Parameters:

v - long数值

Throws:

IOException - IO异常

write

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

Overrides:

write in class OutputStream

Throws:

IOException

write

public void write(ByteBuffer buffer)

write

public void write(VirtualBuffer virtualBuffer)

writeAndFlush

public void writeAndFlush(byte[] b)
                   throws IOException

写入内容并刷新缓冲区

Parameters:

b - 待输出数据

Throws:

IOException - 如果发生 I/O 错误

writeAndFlush

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

Parameters:

b - 待输出数据

off - b的起始位点

len - 从b中输出的数据长度

Throws:

IOException - 如果发生 I/O 错误

See Also:

writeAndFlush(byte[])

flush

public void flush()

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class OutputStream

isEmpty

public boolean isEmpty()

是否存在待输出的数据

Returns:

true:有,false:无

pollItem

public VirtualBuffer pollItem()

poll

public VirtualBuffer poll()

获取并移除当前缓冲队列中头部的VirtualBuffer

Returns:

待输出的VirtualBuffer