org.vishia.inspectorTarget

Class CmdExecuter

java.lang.Object

org.vishia.inspectorTarget.CmdExecuter

All Implemented Interfaces:

AnswerComm_ifc

public class CmdExecuter
extends java.lang.Object
implements AnswerComm_ifc

Field Summary

Fields

Modifier and Type	Field and Description
private byte[]	bufferAnswerData This reference is used to refer the answer buffer.
private CmdConsumer_ifc	cmdConsumer
private Comm	comm
private int	ctFailedTelgPart
private byte[]	data_bufferAnswerData Buffer for the answer telegram.
(package private) InspcDataExchangeAccess.InspcDatagram	datagramCmd
(package private) InspcDataExchangeAccess.Inspcitem	infoCmd
private int	maxNrofAnswerBytes
private InspcDataExchangeAccess.InspcDatagram	myAnswerData
private int	nrofBytesAnswer
private int	nrofSentBytes
private boolean	useTelgHead true than the myAnswerdata is of type DataExchangeTelg_Inspc, false: older form: without head.
static java.lang.String	version Version, history and license.

Constructor Summary

Constructors

Constructor and Description
CmdExecuter(CmdConsumer_ifc commandConsumer)

Method Summary

Modifier and Type	Method and Description
void	completeConstruction(Comm comm)
(package private) boolean	executeCmd(byte[] buffer, int nrofBytesReceived) Executes the given command received with this datagram
int	txAnswer(int nrofAnswerBytesPart, boolean bLastTelg) Send the current answer datagram as answer.

Methods inherited from class java.lang.Object

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

Field Detail

version

public static final java.lang.String version

Version, history and license.

• 2011-02-00 Hartmut created, converted from the C implementation.
• 2006-00-00 Hartmut created for C/C++

Copyright/Copyleft: For this source the LGPL Lesser General Public License, published by the Free Software Foundation is valid. It means:

1. You can use this source without any restriction for any desired purpose.
2. You can redistribute copies of this source to everybody.
3. Every user of this source, also the user of redistribute copies with or without payment, must accept this license for further using.
4. But the LPGL is not appropriate for a whole software product, if this source is only a part of them. It means, the user must publish this part of source, but don't need to publish the whole source of the own product.
5. You can study and modify (improve) this source for own using or for redistribution, but you have to license the modified sources likewise under this LGPL Lesser General Public License. You mustn't delete this Copyright/Copyleft inscription in this source file.

If you are intent to use this sources without publishing its usage, you can get a second license subscribing a special contract with the author.

See Also:

Constant Field Values

datagramCmd

final InspcDataExchangeAccess.InspcDatagram datagramCmd

infoCmd

final InspcDataExchangeAccess.Inspcitem infoCmd

cmdConsumer

private final CmdConsumer_ifc cmdConsumer

maxNrofAnswerBytes

private final int maxNrofAnswerBytes

See Also:

Constant Field Values

nrofBytesAnswer

private int nrofBytesAnswer

nrofSentBytes

private int nrofSentBytes

ctFailedTelgPart

private int ctFailedTelgPart

comm

private Comm comm

data_bufferAnswerData

private final byte[] data_bufferAnswerData

Buffer for the answer telegram. It should be less then the max length of an UDP telegram.

bufferAnswerData

private final byte[] bufferAnswerData

This reference is used to refer the answer buffer. It is for C usage with the PtrVal type which contains the address and the size in one struct.

myAnswerData

private final InspcDataExchangeAccess.InspcDatagram myAnswerData

useTelgHead

private boolean useTelgHead

true than the myAnswerdata is of type DataExchangeTelg_Inspc, false: older form: without head.

Constructor Detail

CmdExecuter

public CmdExecuter(CmdConsumer_ifc commandConsumer)

Method Detail

completeConstruction

public void completeConstruction(Comm comm)

executeCmd

boolean executeCmd(byte[] buffer,
                   int nrofBytesReceived)

Executes the given command received with this datagram

Parameters:

buffer - contains the datagram

nrofBytesReceived -

Returns:

true if ok, false if nok

txAnswer

public int txAnswer(int nrofAnswerBytesPart,
                    boolean bLastTelg)

Send the current answer datagram as answer. Firstly the InspcDataExchangeAccess.InspcDatagram#incrAnswerNr() was invoked, therewith an answer starts with 1. That increment is important for more as one answer datagrams. The head is initialized only one time with the data from the request telegram, the answerNr is incremented always. The length of the datagram is set to the head using InspcDataExchangeAccess.InspcDatagram#setLengthDatagram(int)

Specified by:

txAnswer in interface AnswerComm_ifc

Parameters:

nrofAnswerBytesPart - Number of bytes of a part, which is prepared new and not returned from executeMonitorCmd_CmdConsumer_ifcInspc(...) yet. This parameter is meanfull if a telegram will be sent while executeMonitorCmd_CmdConsumer_ifcInspc(...) is running. If the last telegramm will be sent, it should be 0.

bLastTelg - true than the bit for last telg in the sequence counter is set. false than the last-telg-bit isn't set and a new telg will be prepared.

Returns:

The yet maximal number of answer bytes. <0 than an error occur. the preparation of data should be aborted.

See Also:

AnswerComm_ifc.txAnswer(int, boolean)