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关于

A DataDescriptionDefinition represents the "raw" description of data attributes. Such a definition is stored e.g. in a static file and loaded by Cinema 4D . The description definition is the base for the final, "resolved" data description, see DataDescription Manual .

描述

General information ( maxon::DESCRIPTION::DATA::INFO ) is accessed with:

• maxon::DataDescriptionDefinitionInterface::GetInfo() : Returns the info dictionary.
• maxon::DataDescriptionDefinitionInterface::SetInfo() : Sets the info dictionary.

The various attribute descriptions in the definition are stored as DataDictionaries (using the alias maxon::DataDescriptionEntry ):

• maxon::DataDescriptionDefinitionInterface::GetEntryCount() : Returns the number of stored entries.
• maxon::DataDescriptionDefinitionInterface::GetEntries() : Returns all entries.
• maxon::DataDescriptionDefinitionInterface::GetEntry() : Returns the entry at the given index.
• maxon::DataDescriptionDefinitionInterface::AddEntry() : Adds an entry to the definition.
• maxon::DataDescriptionDefinitionInterface::ReplaceEntry() : Replaces the entry at the given index.
• maxon::DataDescriptionDefinitionInterface::EraseEntry() : Deletes the entry at the given index.
• maxon::DataDescriptionDefinitionInterface::Reset() : Deletes all entries.

Usable observables are:

• ObservableDescriptionChanged: Is fired on any change of the definition.

// data type ID const maxon::IdAndVersion dataType = { "net.maxonexample.class.descriptionElement" , maxon::Id () };

// load data description definition const maxon::Id category = maxon::DATADESCRIPTION_CATEGORY_DATA ; const maxon::LanguageRef language = maxon::LanguageRef::Create() iferr_return ; const maxon :: LOADDESCRIPTIONMODE mode = maxon :: LOADDESCRIPTIONMODE :: COMPLETE ; maxon ::DataDescriptionDefinition definition = maxon ::DataDescriptionDefinitionDatabaseInterface::LoadDescription(mode, category, language, dataType) iferr_return ;

// get all attributes const auto attributes = definition.GetEntries() iferr_return ;

// list all attributes for (auto& attribute : attributes) { const maxon::InternedId ID = attribute. Get (maxon::DESCRIPTION::BASE::IDENTIFIER) iferr_return ; const maxon::Id attributeDataType = attribute. Get (maxon::DESCRIPTION::DATA::BASE::DATATYPE) iferr_return ; const maxon::Data defaultData = attribute. Get ( maxon::DESCRIPTION::DATA::BASE::DEFAULTVALUE ) iferr_return ;