程序包 com.mysql.cj.protocol.a

类 MultiPacketReader

java.lang.Object

com.mysql.cj.protocol.a.MultiPacketReader

所有已实现的接口:

MessageReader<NativePacketHeader,NativePacketPayload>

public class MultiPacketReader
extends Object
implements MessageReader<NativePacketHeader,NativePacketPayload>

A MessageReader which reads a full packet built from sequence of it's on-wire parts. See http://dev.mysql.com/doc/internals/en/sending-more-than-16mbyte.html

构造器概要

构造器

构造器	说明
MultiPacketReader(MessageReader<NativePacketHeader,NativePacketPayload> packetReader)

方法概要

修饰符和类型	方法	说明
byte	getMessageSequence()	Get last message sequence number, as it was stored by MessageReader.readHeader().
NativePacketHeader	probeHeader()	Read the next message header from server, possibly blocking indefinitely until the message is received, and cache it so that the next MessageReader.readHeader() return the same header.
NativePacketPayload	probeMessage(Optional<NativePacketPayload> reuse, NativePacketHeader header)	Read message from server into to the given Message instance or into the new one if not present and cache it so that the next MessageReader.readMessage(Optional, MessageHeader) return the same message.
NativePacketHeader	readHeader()	Read the next message header from server, possibly blocking indefinitely until the message is received.
NativePacketPayload	readMessage(Optional<NativePacketPayload> reuse, NativePacketHeader header)	Read message from server into to the given Message instance or into the new one if not present.
void	resetMessageSequence()	Set stored message sequence number to 0.
MessageReader<NativePacketHeader,NativePacketPayload>	undecorate()	Return the previous MessageReader instance from the decorators chain or the current MessageReader if it is the first entry in a chain.
MessageReader<NativePacketHeader,NativePacketPayload>	undecorateAll()	Return a MessageReader instance free of decorators.

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 com.mysql.cj.protocol.MessageReader

pushMessageListener, readMessage, start, stopAfterNextMessage

构造器详细资料

MultiPacketReader

public MultiPacketReader(MessageReader<NativePacketHeader,NativePacketPayload> packetReader)

方法详细资料

readHeader

public NativePacketHeader readHeader()
                              throws IOException

从接口复制的说明: MessageReader

Read the next message header from server, possibly blocking indefinitely until the message is received.

指定者:

readHeader 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

返回:

MessageHeader of the next message

抛出:

IOException - if an error occurs

probeHeader

public NativePacketHeader probeHeader()
                               throws IOException

从接口复制的说明: MessageReader

Read the next message header from server, possibly blocking indefinitely until the message is received, and cache it so that the next MessageReader.readHeader() return the same header.

指定者:

probeHeader 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

返回:

MessageHeader of the next message

抛出:

IOException - if an error occurs

readMessage

public NativePacketPayload readMessage(Optional<NativePacketPayload> reuse,
                                       NativePacketHeader header)
                                throws IOException

从接口复制的说明: MessageReader

Read message from server into to the given Message instance or into the new one if not present. For asynchronous channel it synchronously reads the next message in the stream, blocking until the message is read fully. Could throw CJCommunicationsException wrapping an IOException during read or parse

指定者:

readMessage 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

参数:

reuse - Message object to reuse. May be ignored by implementation.

header - MessageHeader instance

返回:

Message instance

抛出:

IOException - if an error occurs

probeMessage

public NativePacketPayload probeMessage(Optional<NativePacketPayload> reuse,
                                        NativePacketHeader header)
                                 throws IOException

从接口复制的说明: MessageReader

Read message from server into to the given Message instance or into the new one if not present and cache it so that the next MessageReader.readMessage(Optional, MessageHeader) return the same message. For asynchronous channel it synchronously reads the next message in the stream, blocking until the message is read fully. Could throw CJCommunicationsException wrapping an IOException during read or parse

指定者:

probeMessage 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

参数:

reuse - Message object to reuse. May be ignored by implementation.

header - MessageHeader instance

返回:

Message instance

抛出:

IOException - if an error occurs

getMessageSequence

public byte getMessageSequence()

从接口复制的说明: MessageReader

Get last message sequence number, as it was stored by MessageReader.readHeader().

指定者:

getMessageSequence 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

返回:

number

resetMessageSequence

public void resetMessageSequence()

从接口复制的说明: MessageReader

Set stored message sequence number to 0.

指定者:

resetMessageSequence 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

undecorateAll

public MessageReader<NativePacketHeader,NativePacketPayload> undecorateAll()

从接口复制的说明: MessageReader

Return a MessageReader instance free of decorators.

指定者:

undecorateAll 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

返回:

MessageReader

undecorate

public MessageReader<NativePacketHeader,NativePacketPayload> undecorate()

从接口复制的说明: MessageReader

Return the previous MessageReader instance from the decorators chain or the current MessageReader if it is the first entry in a chain.

指定者:

undecorate 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

返回:

MessageReader