Class FixedLengthByteSupplier

java.lang.Object

cool.scx.io.supplier.FixedLengthByteSupplier

All Implemented Interfaces:

ByteSupplier, AutoCloseable

public final class FixedLengthByteSupplier
extends Object
implements ByteSupplier

FixedLengthByteSupplier

Version:

0.0.1

Author:

scx567888

Constructor Summary

Constructors

Constructor	Description
FixedLengthByteSupplier(ByteInput byteInput, long maxLength)

Method Summary

Modifier and Type	Method	Description
void	close()
ByteChunk	get()	必须是推进式的阻塞拉取

Methods inherited from class Object

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

Constructor Details

FixedLengthByteSupplier

public FixedLengthByteSupplier(ByteInput byteInput,
 long maxLength)

Method Details

get

public ByteChunk get()
              throws AlreadyClosedException,
ScxIOException

Description copied from interface: ByteSupplier

• 必须是推进式的阻塞拉取
• 如果当前已经读取到有效数据 -> 返回 ByteChunk(len > 0)
• 如果暂时无法输出数据, 但 I/O 状态确实推进了 -> 返回 EMPTY_BYTE_CHUNK
• 如果 EOF 且不会再产生数据 -> 返回 null
• 不允许无状态的空循环: 供应者不得无意义地连续返回 EMPTY_BYTE_CHUNK
• 连续多次调用 get() 必须使底层数据源或解码状态单调推进

Specified by:

get in interface ByteSupplier

Throws:

AlreadyClosedException

ScxIOException

close

public void close()
           throws ScxIOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ByteSupplier

Throws:

ScxIOException