- Qt 6.10
- Qt GRPC
- C++ Classes
- QGrpcSerializationFormat
- Qt 6.10.0 Reference Documentation

# QGrpcSerializationFormat Class

The QGrpcSerializationFormat class holds the protobuf message serializer and the associated content-type suffix. More...

Header: | `#include <QGrpcSerializationFormat>`
CMake: | `find_package(Qt6 REQUIRED COMPONENTS Grpc)` `target_link_libraries(mytarget PRIVATE Qt6::Grpc)`
Since: | Qt 6.8

- List of all members, including inherited members

This class is equality-comparable.

## Public Functions

| QGrpcSerializationFormat(QtGrpc::SerializationFormat format = {})
| QGrpcSerializationFormat(QByteArrayView suffix, std::shared_ptr<QAbstractProtobufSerializer> serializer)
| QGrpcSerializationFormat(const QGrpcSerializationFormat &other)
| QGrpcSerializationFormat(QGrpcSerializationFormat &&other)
| ~QGrpcSerializationFormat()
std::shared_ptr<QAbstractProtobufSerializer> | serializer() const
QByteArrayView | suffix() const
`(since 6.8)` void | swap(QGrpcSerializationFormat &other)
`(since 6.8)` QVariant | operator QVariant() const
QGrpcSerializationFormat & | operator=(QGrpcSerializationFormat &&other)
QGrpcSerializationFormat & | operator=(const QGrpcSerializationFormat &other)

## Related Non-Members

`(since 6.8)` QDebug | operator<<(QDebug debug, const QGrpcSerializationFormat &sfmt)

## Detailed Description

The QGrpcSerializationFormat class contains the serializer used for serializing and deserializing protobuf messages, as well as the associated content-type suffix, which indicates the message encoding in transport. For HTTP/2 specific details see the Content-Type section.

Note: The content-type is transport, and therefore implementation specific.

The class can be constructed using one of the SerializationFormat presets or a custom suffix and serializer:

     QGrpcSerializationFormat jsonFormat(QtGrpc::SerializationFormat::Json);

This creates a QProtobufJsonSerializer with the `json` suffix. For HTTP/2 transportation this results in the `application/grpc+json` content-type.

     class DummySerializer : public QAbstractProtobufSerializer
     {
         ...
     };
     QGrpcSerializationFormat dummyFormat("dummy", std::make_shared<DummySerializer>());

This uses `DummySerializer` for encoding and decoding messages with the `dummy` suffix. For HTTP/2 transportation this results in the `application/grpc+dummy` content-type.

Note: Custom serializers require server support for the specified format.

See also QGrpcChannelOptions::serializationFormat.

## Member Function Documentation

### QGrpcSerializationFormat::QGrpcSerializationFormat(QtGrpc::SerializationFormat format = {})

Constructs a new QGrpcSerializationFormat with the specified preset format.

The default format used is SerializationFormat::Default.

### `[explicit]` QGrpcSerializationFormat::QGrpcSerializationFormat(QByteArrayView suffix, std::shared_ptr<QAbstractProtobufSerializer> serializer)

Constructs a new QGrpcSerializationFormat with a custom content type specified by suffix and a protobuf message serializer.

### QGrpcSerializationFormat::QGrpcSerializationFormat(const QGrpcSerializationFormat &other)

Constructs a copy of other.

### `[noexcept]` QGrpcSerializationFormat::QGrpcSerializationFormat(QGrpcSerializationFormat &&other)

Move-constructs a new QGrpcSerializationFormat from other.

Note: The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.

### `[noexcept]` QGrpcSerializationFormat::~QGrpcSerializationFormat()

Destroys the QGrpcSerializationFormat.

### std::shared_ptr<QAbstractProtobufSerializer> QGrpcSerializationFormat::serializer() const

Returns the serializer for this serialization format.

/sa QAbstractProtobufSerializer

### `[noexcept]` QByteArrayView QGrpcSerializationFormat::suffix() const

Returns the content type suffix for this serialization format.

### `[noexcept, since 6.8]` void QGrpcSerializationFormat::swap(QGrpcSerializationFormat &other)

Swaps other with this object. This operation is very fast and never fails.

This function was introduced in Qt 6.8.

### `[since 6.8]` QVariant QGrpcSerializationFormat::operator QVariant() const

Constructs a new QVariant from this object.

This function was introduced in Qt 6.8.

### `[noexcept]` QGrpcSerializationFormat &QGrpcSerializationFormat::operator=(QGrpcSerializationFormat &&other)

Move-assigns other to this QGrpcSerializationFormat instance and returns a reference to it.

Note: The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.

### QGrpcSerializationFormat &QGrpcSerializationFormat::operator=(const QGrpcSerializationFormat &other)

Assigns the other QGrpcSerializationFormat object to this one.

## Related Non-Members

### `[since 6.8]` QDebug operator<<(QDebug debug, const QGrpcSerializationFormat &sfmt)

Writes sfmt to the specified stream debug.

This function was introduced in Qt 6.8.