The generic field for std::variant types.
Definition at line 1314 of file RField.hxx.
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| | RVariantField (RVariantField &&other)=default |
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| | RVariantField (std::string_view fieldName, const std::vector< RFieldBase * > &itemFields) |
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| | ~RVariantField () override=default |
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| size_t | GetAlignment () const final |
| | As a rule of thumb, the alignment is equal to the size of the type.
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| size_t | GetValueSize () const final |
| | The number of bytes taken by a value of the appropriate type.
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| RVariantField & | operator= (RVariantField &&other)=default |
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| | RFieldBase (const RFieldBase &)=delete |
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| | RFieldBase (RFieldBase &&)=default |
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| | RFieldBase (std::string_view name, std::string_view type, ENTupleStructure structure, bool isSimple, std::size_t nRepetitions=0) |
| | The constructor creates the underlying column objects and connects them to either a sink or a source.
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| virtual | ~RFieldBase ()=default |
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| virtual void | AcceptVisitor (Detail::RFieldVisitor &visitor) const |
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| RSchemaIterator | begin () |
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| RValue | BindValue (std::shared_ptr< void > objPtr) |
| | Creates a value from a memory location with an already constructed object.
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| RConstSchemaIterator | cbegin () const |
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| RConstSchemaIterator | cend () const |
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| std::unique_ptr< RFieldBase > | Clone (std::string_view newName) const |
| | Copies the field and its sub fields using a possibly new name and a new, unconnected set of columns.
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| RBulk | CreateBulk () |
| | The returned bulk is initially empty; RBulk::ReadBulk will construct the array of values.
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| template<typename T > |
| std::unique_ptr< T, typename RCreateObjectDeleter< T >::deleter > | CreateObject () const |
| | Generates an object of the field type and allocates new initialized memory according to the type.
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| template<> |
| std::unique_ptr< void, typename RFieldBase::RCreateObjectDeleter< void >::deleter > | CreateObject () const |
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| template<> |
| std::unique_ptr< void, typename ROOT::Experimental::RFieldBase::RCreateObjectDeleter< void >::deleter > | CreateObject () const |
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| RValue | CreateValue () |
| | Generates an object of the field type and wraps the created object in a shared pointer and returns it an RValue connected to the field.
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| RSchemaIterator | end () |
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| const ColumnRepresentation_t & | GetColumnRepresentative () const |
| | Returns the fColumnRepresentative pointee or, if unset, the field's default representative.
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| std::string | GetDescription () const |
| | Get the field's description.
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| std::string | GetFieldName () const |
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| virtual std::uint32_t | GetFieldVersion () const |
| | Indicates an evolution of the mapping scheme from C++ type to columns.
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| NTupleSize_t | GetNElements () const |
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| std::size_t | GetNRepetitions () const |
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| DescriptorId_t | GetOnDiskId () const |
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| std::uint32_t | GetOnDiskTypeVersion () const |
| | Return the C++ type version stored in the field descriptor; only valid after a call to ConnectPageSource()
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| const RFieldBase * | GetParent () const |
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| std::string | GetQualifiedFieldName () const |
| | Returns the field name and parent field names separated by dots ("grandparent.parent.child")
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| EState | GetState () const |
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| ENTupleStructure | GetStructure () const |
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| std::vector< RFieldBase * > | GetSubFields () |
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| std::vector< const RFieldBase * > | GetSubFields () const |
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| int | GetTraits () const |
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| std::string | GetTypeAlias () const |
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| std::string | GetTypeName () const |
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| virtual std::uint32_t | GetTypeVersion () const |
| | Indicates an evolution of the C++ type itself.
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| bool | HasDefaultColumnRepresentative () const |
| | Whether or not an explicit column representative was set.
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| bool | HasReadCallbacks () const |
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| bool | IsSimple () const |
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| RFieldBase & | operator= (const RFieldBase &)=delete |
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| RFieldBase & | operator= (RFieldBase &&)=default |
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| void | SetColumnRepresentative (const ColumnRepresentation_t &representative) |
| | Fixes a column representative.
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| void | SetDescription (std::string_view description) |
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| void | SetOnDiskId (DescriptorId_t id) |
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| virtual std::vector< RValue > | SplitValue (const RValue &value) const |
| | Creates the list of direct child values given a value for this field.
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| using | ColumnRepresentation_t = std::vector< EColumnType > |
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| enum class | EState { kUnconnected
, kConnectedToSink
, kConnectedToSource
} |
| | During its lifetime, a field undergoes the following possible state transitions: More...
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| using | RConstSchemaIterator = RSchemaIteratorTemplate< true > |
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| using | RSchemaIterator = RSchemaIteratorTemplate< false > |
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| static std::vector< RCheckResult > | Check (const std::string &fieldName, const std::string &typeName) |
| | Checks if the given type is supported by RNTuple.
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| static RResult< std::unique_ptr< RFieldBase > > | Create (const std::string &fieldName, const std::string &typeName) |
| | Factory method to resurrect a field from the stored on-disk type information.
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| static RResult< void > | EnsureValidFieldName (std::string_view fieldName) |
| | Check whether a given string is a valid field name.
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| static constexpr std::uint32_t | kInvalidTypeVersion = -1U |
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| static constexpr int | kTraitMappable = 0x04 |
| | A field of a fundamental type that can be directly mapped via RField<T>::Map(), i.e.
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| static constexpr int | kTraitTriviallyConstructible = 0x01 |
| | No constructor needs to be called, i.e.
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| static constexpr int | kTraitTriviallyDestructible = 0x02 |
| | The type is cleaned up just by freeing its memory. I.e. the destructor performs a no-op.
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| static constexpr int | kTraitTrivialType = kTraitTriviallyConstructible | kTraitTriviallyDestructible |
| | Shorthand for types that are both trivially constructible and destructible.
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| static std::size_t | CallAppendOn (RFieldBase &other, const void *from) |
| | Allow derived classes to call Append and Read on other (sub) fields.
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| static void | CallConstructValueOn (const RFieldBase &other, void *where) |
| | Allow derived classes to call ConstructValue(void *) and GetDeleter on other (sub) fields.
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| static void | CallReadOn (RFieldBase &other, NTupleSize_t globalIndex, void *to) |
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| static void | CallReadOn (RFieldBase &other, RClusterIndex clusterIndex, void *to) |
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| static RResult< std::unique_ptr< RFieldBase > > | Create (const std::string &fieldName, const std::string &canonicalType, const std::string &typeAlias, bool fContinueOnError=false) |
| | Factory method to resurrect a field from the stored on-disk type information.
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| static std::unique_ptr< RDeleter > | GetDeleterOf (const RFieldBase &other) |
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| static Internal::RColumn * | GetPrincipalColumnOf (const RFieldBase &other) |
| | Fields may need direct access to the principal column of their sub fields, e.g. in RRVecField::ReadBulk.
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| const ColumnRepresentation_t * | fColumnRepresentative = nullptr |
| | Points into the static vector GetColumnRepresentations().GetSerializationTypes() when SetColumnRepresentative is called.
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| std::vector< std::unique_ptr< Internal::RColumn > > | fColumns |
| | The columns are connected either to a sink or to a source (not to both); they are owned by the field.
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| std::uint32_t | fOnDiskTypeVersion = kInvalidTypeVersion |
| | C++ type version cached from the descriptor after a call to ConnectPageSource()
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| RFieldBase * | fParent |
| | Sub fields point to their mother field.
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| Internal::RColumn * | fPrincipalColumn |
| | Points into fColumns.
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| std::vector< ReadCallback_t > | fReadCallbacks |
| | List of functions to be called after reading a value.
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| std::vector< std::unique_ptr< RFieldBase > > | fSubFields |
| | Collections and classes own sub fields.
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| int | fTraits = 0 |
| | Properties of the type that allow for optimizations of collections of that type.
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| std::string | fTypeAlias |
| | A typedef or using name that was used when creating the field.
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| size_t ROOT::Experimental::RVariantField::GetAlignment |
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const |
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inlinefinalvirtual |
As a rule of thumb, the alignment is equal to the size of the type.
There are, however, various exceptions to this rule depending on OS and CPU architecture. So enforce the alignment to be explicitly spelled out.
Implements ROOT::Experimental::RFieldBase.
Definition at line 1363 of file RField.hxx.
Public Member Functions inherited from ROOT::Experimental::RFieldBase
