QNetworkOperation(3qt)

NAME
QNetworkOperation - This class is used to define operations for network protocols and return the state, arguments, etc

#include <qnetworkprotocol.h>

Inherits QObject.

  Public Members
QNetworkOperation ( QNetworkProtocol::Operation operation, const QString & arg0, const QString & arg1, const QString & arg2 )
QNetworkOperation ( QNetworkProtocol::Operation operation, const QByteArray & arg0, const QByteArray & arg1, const QByteArray & arg2 )
~QNetworkOperation ()
void setState ( QNetworkProtocol::State state )
void setProtocolDetail ( const QString & detail )
void setErrorCode ( int ec )
void setArg ( int num, const QString & arg )
void setRawArg ( int num, const QByteArray & arg )
QNetworkProtocol::Operation operation () const
QNetworkProtocol::State state () const
QString arg ( int num ) const
QByteArray rawArg ( int num ) const
QString protocolDetail () const
int errorCode () const
void free ()

DESCRIPTION
This class is used to define operations for network protocols and return the state, arguments, etc.

For each operation, which a network protocol should process such an object is created to describe the operation and the current state.

For a detailed description about the Qt Network Architecture, and also how to implement and use network protocols in Qt, look at the Qt Network Documentation.

See also QNetworkProtocol.

MEMBER FUNCTION DOCUMENTATION

QNetworkOperation::QNetworkOperation ( QNetworkProtocol::Operation operation, const QByteArray & arg0, const QByteArray & arg1, const QByteArray & arg2 )
Constructs a network operation object. operation is the type of the operation, arg0, arg1 and arg2 are the first three raw data arguments of the operation. The state is initialized to QNetworkProtocol::StWaiting.

QNetworkOperation::QNetworkOperation ( QNetworkProtocol::Operation operation, const QString & arg0, const QString & arg1, const QString & arg2 )
Constructs a network operation object. operation is the type of the operation, arg0, arg1 and arg2 are the first three arguments of the operation. The state is initialized to QNetworkProtocol::StWaiting.

QNetworkOperation::~QNetworkOperation ()
Destructor.

QString QNetworkOperation::arg ( int num ) const
Returns the argument num of the operation. If this argument was not set already, an empty string is returned.

int QNetworkOperation::errorCode () const
If an operation failed, you get the error code using this methode.

void QNetworkOperation::free ()
If this method is called the QNetworkOperation deletes itself after it has been 1 second unused, which means for 1 second no method of the QNetworkOperation has been accessed.

Because QNetworkOperation pointers are passed around a lot the QNetworkProtocol can't delete these at the correct time. So, if a QNetworkProtocol doesn't need an operation anymore and calls this method, so that it gets deleted correctly.

You should never need to call the method yourself!.

QNetworkProtocol::Operation QNetworkOperation::operation() const
Returns the type of the operation.

QString QNetworkOperation::protocolDetail () const
If the operation failed, using this method you may get a more detailed error message.

QByteArray QNetworkOperation::rawArg ( int num ) const
Returns the raw data argument num of the operation. If this argument was not set already, an empty bytearray is returned.

void QNetworkOperation::setArg ( int num, const QString & arg )
Sets the argument num of the network operation to arg.

void QNetworkOperation::setErrorCode ( int ec )
If the operation failed, the protocol should set an error code to describe the error more detailed. Preferable one of the error codes defined in QNetworkProtocol should be used.

void QNetworkOperation::setProtocolDetail ( const QString & detail )
If the operation failed a detailed error message can be set.

void QNetworkOperation::setRawArg ( int num, const QByteArray & arg )
Sets the raw data argument num of the network operation to arg.

void QNetworkOperation::setState ( QNetworkProtocol::State state )
Sets the state of the operation object. This should be done by the network protocol during processing it, and at the end it should be set to QNetworkProtocol::StDone or QNetworkProtocol::StFailed depending on success or failure.

QNetworkProtocol::State QNetworkOperation::state() const
Returns the state of the operation. Using that you can find out if an operation is still waiting to get processed, if it is in process or if has been done successfully or if it failed.

SEE ALSO
http://doc.trolltech.com/qnetworkoperation.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
Copyright 1992-2001 Trolltech AS, http://www.trolltech.com. See the license file included in the distribution for a complete license statement.

AUTHOR
Generated automatically from the source code.

BUGS
If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports make our job much simpler. Thank you.

In case of content or formattting problems with this manual page, please report them to qt-bugs@trolltech.com. Please include the name of the manual page (qnetworkoperation.3qt) and the Qt version (2.3.1).