org.apache.mina.example.sumup.codec

类 AbstractMessageDecoder

java.lang.Object

org.apache.mina.example.sumup.codec.AbstractMessageDecoder

所有已实现的接口:

MessageDecoder

直接已知子类:

AddMessageDecoder, ResultMessageDecoder

public abstract class AbstractMessageDecoder
extends java.lang.Object
implements MessageDecoder

A MessageDecoder that decodes message header and forwards the decoding of body to a subclass.

作者:

Apache MINA Project

字段概要

从接口继承的字段 org.apache.mina.filter.codec.demux.MessageDecoder

NEED_DATA, NOT_OK, OK

构造器概要

构造器

限定符	构造器和说明
protected	AbstractMessageDecoder(int type)

方法概要

方法

限定符和类型	方法和说明
MessageDecoderResult	decodable(IoSession session, IoBuffer in) Checks the specified buffer is decodable by this decoder.
MessageDecoderResult	decode(IoSession session, IoBuffer in, ProtocolDecoderOutput out) Decodes binary or protocol-specific content into higher-level message objects.
protected abstract AbstractMessage	decodeBody(IoSession session, IoBuffer in)

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.mina.filter.codec.demux.MessageDecoder

finishDecode

构造器详细资料

AbstractMessageDecoder

protected AbstractMessageDecoder(int type)

方法详细资料

decodable

public MessageDecoderResult decodable(IoSession session,
                             IoBuffer in)

从接口复制的说明: MessageDecoder

Checks the specified buffer is decodable by this decoder.

指定者:

decodable 在接口中 MessageDecoder

参数:

session - The current session

in - The buffer containing the data to decode

返回:

MessageDecoder.OK if this decoder can decode the specified buffer. MessageDecoder.NOT_OK if this decoder cannot decode the specified buffer. MessageDecoder.NEED_DATA if more data is required to determine if the specified buffer is decodable (MessageDecoder.OK) or not decodable MessageDecoder.NOT_OK.

decode

public MessageDecoderResult decode(IoSession session,
                          IoBuffer in,
                          ProtocolDecoderOutput out)
                            throws java.lang.Exception

从接口复制的说明: MessageDecoder

Decodes binary or protocol-specific content into higher-level message objects. MINA invokes MessageDecoder.decode(IoSession, IoBuffer, ProtocolDecoderOutput) method with read data, and then the decoder implementation puts decoded messages into ProtocolDecoderOutput.

指定者:

decode 在接口中 MessageDecoder

参数:

session - The current session

in - The buffer containing the data to decode

out - The instance of ProtocolDecoderOutput that will receive the decoded messages

返回:

MessageDecoder.OK if you finished decoding messages successfully. MessageDecoder.NEED_DATA if you need more data to finish decoding current message. MessageDecoder.NOT_OK if you cannot decode current message due to protocol specification violation.

抛出:

java.lang.Exception - if the read data violated protocol specification

decodeBody

protected abstract AbstractMessage decodeBody(IoSession session,
                         IoBuffer in)

参数:

session - The current session

in - The incoming buffer

返回:

null if the whole body is not read yet