The OPC UA ExtensionObject. 更多...
头: | #include <QOpcUaExtensionObject> |
CMake: |
find_package(Qt6 REQUIRED COMPONENTS OpcUa)
target_link_libraries(mytarget PRIVATE Qt6::OpcUa) |
qmake: | QT += opcua |
enum | 编码 { NoBody, ByteString, Xml } |
QOpcUaExtensionObject () | |
QOpcUaExtensionObject (const QOpcUaExtensionObject & rhs ) | |
QByteArray | encodedBody () const |
QByteArray & | encodedBodyRef () |
QOpcUaExtensionObject::Encoding | encoding () const |
QString | encodingTypeId () const |
void | setBinaryEncodedBody (const QByteArray & encodedBody , const QString & typeId ) |
void | setEncodedBody (const QByteArray & encodedBody ) |
void | setEncoding (QOpcUaExtensionObject::Encoding encoding ) |
void | setEncodingTypeId (const QString & encodingTypeId ) |
void | setXmlEncodedBody (const QByteArray & encodedBody , const QString & typeId ) |
QVariant | operator QVariant () const |
QOpcUaExtensionObject & | operator= (const QOpcUaExtensionObject & rhs ) |
bool | operator== (const QOpcUaExtensionObject & rhs ) const |
This is the Qt OPC UA representation for an extension object. Extension objects are used as a container in OPC UA whenever a non-builtin type is stored in a Variant. It contains information about the type and encoding of the data as well as the data itself encoded with one of the encodings specified in OPC UA part 6. Decoders are supposed to decode extension objects if they can handle the type. If the type is not supported by the decoder, the extension object is not decoded and decoding is left to the user.
Enumerates the possible encodings of the body.
常量 | 值 |
---|---|
QOpcUaExtensionObject::NoBody
|
0
|
QOpcUaExtensionObject::ByteString
|
1
|
QOpcUaExtensionObject::Xml
|
2
|
Default constructs an extension object with no parameters set.
Constructs an extension object from rhs .
Returns the body of this extension object. It contains the encoded data.
另请参阅 setEncodedBody ().
Returns a reference to the body of this extension object.
返回 encoding of the body.
另请参阅 setEncoding ().
Returns the node id of the encoding for the type stored by this extension object, for example ns=0;i=886 for Range_Encoding_DefaultBinary. All encoding ids are listed in https://opcfoundation.org/UA/schemas/1.05/NodeIds.csv .
另请参阅 setEncodingTypeId ().
Sets the body of this extension object to encodedBody , sets the encoding of the body to ByteString and sets the type id of the encoded data to typeId .
另请参阅 setEncodedBody (), setEncoding (),和 setEncodingTypeId ().
Sets the body of this extension object to encodedBody .
另请参阅 encodedBody ().
Sets the encoding of the body to encoding .
另请参阅 encoding ().
Sets the node id of the encoding for the type stored by this extension object to encodingTypeId .
另请参阅 encodingTypeId ().
Sets the body of this extension object to encodedBody , sets the encoding of the body to Xml and sets the type id of the encoded data to typeId .
另请参阅 setEncodedBody (), setEncoding (),和 setEncodingTypeId ().
Converts this extension object to QVariant .
设置值从 rhs in this extension object.
返回
true
if this extension object has the same value as
rhs
.