org.vishia.inspcPC.accTarget

Class InspcAccessCheckerRxTelg

java.lang.Object

org.vishia.inspcPC.accTarget.InspcAccessCheckerRxTelg

public class InspcAccessCheckerRxTelg
extends java.lang.Object

This class checks whether a received telegram from a target is expected or not.

Field Summary

Fields

Modifier and Type	Field and Description
private InspcDataExchangeAccess.InspcDatagram[]	answerTelgs Accumulator for all answer telegrams.
private int	awaitSeqNumber
(package private) boolean	awaitTelg True then awaits a telg.
private boolean	bWaiting True if wait is called already.
private InspcAccessExecAnswerTelg_ifc	executerAnswer This aggregation is null if the answer telegram should not evaluated in the receiving thread.
private boolean	received True if a awaited telegram was received.
(package private) InspcDataExchangeAccess.InspcDatagram	rxTelg

Constructor Summary

Constructors

Constructor and Description
InspcAccessCheckerRxTelg()

Method Summary

Modifier and Type	Method and Description
(package private) void	applyReceivedTelg(byte[] rxBuffer, int zBuffer, LogMessage log, int identLog) Called in the rx-trhead to apply any received telegram.
boolean	hasAnwer()
(package private) void	setAwait(int seqNumber) Set awaiting an answer with given sequence number.
(package private) void	setExecuterAnswer(InspcAccessExecAnswerTelg_ifc executerAnswer)
(package private) InspcDataExchangeAccess.InspcDatagram[]	waitForAnswer(int timeout) Wait for an answer telegram.

Methods inherited from class java.lang.Object

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

Field Detail

awaitTelg

boolean awaitTelg

True then awaits a telg. It is set before a telegram is sent.

executerAnswer

private InspcAccessExecAnswerTelg_ifc executerAnswer

This aggregation is null if the answer telegram should not evaluated in the receiving thread. If is should evaluated in the receiving thread, this is the method to evaluate.

bWaiting

private boolean bWaiting

True if wait is called already.

awaitSeqNumber

private int awaitSeqNumber

received

private boolean received

True if a awaited telegram was received.

rxTelg

final InspcDataExchangeAccess.InspcDatagram rxTelg

answerTelgs

private InspcDataExchangeAccess.InspcDatagram[] answerTelgs

Accumulator for all answer telegrams. Usual it is only 1 telegram. But up to the max number may be received. The communication supports only 1 send telegram, but with more as one info blocks. The answer telegram can contain 1 or more info blocks. The answers may be longer as the requests. Therefore more as one answer telegrams can be received.

Constructor Detail

InspcAccessCheckerRxTelg

public InspcAccessCheckerRxTelg()

Method Detail

setExecuterAnswer

void setExecuterAnswer(InspcAccessExecAnswerTelg_ifc executerAnswer)

hasAnwer

public boolean hasAnwer()

setAwait

void setAwait(int seqNumber)

Set awaiting an answer with given sequence number. This method should be called before a telegram is sent. If the answer telegram is received quickly after send, that informations should be present already.

Parameters:

seqNumber - The awaiting sequence number, it is the same as the sent sequence number

executerAnswer - if not null, then the method of this interface will be called in the receiver thread if all answer telegrams are received.

waitForAnswer

InspcDataExchangeAccess.InspcDatagram[] waitForAnswer(int timeout)

Wait for an answer telegram. This routine can be called after sent or in an extra thread, which processes only received telegrams.

Parameters:

timeout -

Returns:

null if timeout, elsewhere the answer telegram with given head and content.

applyReceivedTelg

void applyReceivedTelg(byte[] rxBuffer,
                       int zBuffer,
                       LogMessage log,
                       int identLog)

Called in the rx-trhead to apply any received telegram. The Rx-thread is an independent thread, which is in receive loop anytime.

Parameters:

rxBuffer -

zBuffer -