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Reference Guide
ROOT::Experimental::RField< ClusterSize_t > Class Reference

Template specializations for concrete C++ types.

Definition at line 483 of file RField.hxx.

Public Member Functions

 RField (RField &&other)=default
 
 RField (std::string_view name)
 
 ~RField ()=default
 
Detail::RFieldValue CaptureValue (void *where) final
 Creates a value from a memory location with an already constructed object. More...
 
RFieldBaseClone (std::string_view newName) final
 
void DoGenerateColumns () final
 Creates the backing columns corresponsing to the field type and name. More...
 
ROOT::Experimental::Detail::RFieldValue GenerateValue (void *where) final
 Generates a tree value in a given location of size at least GetValueSize(). More...
 
template<typename... ArgsT>
ROOT::Experimental::Detail::RFieldValue GenerateValue (void *where, ArgsT &&... args)
 
void GetCollectionInfo (const RClusterIndex &clusterIndex, RClusterIndex *collectionStart, ClusterSize_t *size)
 
void GetCollectionInfo (NTupleSize_t globalIndex, RClusterIndex *collectionStart, ClusterSize_t *size)
 Special help for offset fields. More...
 
size_t GetValueSize () const final
 The number of bytes taken by a value of the appropriate type. More...
 
ClusterSize_tMap (const RClusterIndex &clusterIndex)
 
ClusterSize_tMap (NTupleSize_t globalIndex)
 
RFieldoperator= (RField &&other)=default
 
- Public Member Functions inherited from ROOT::Experimental::Detail::RFieldBase
 RFieldBase (const RFieldBase &)=delete
 
 RFieldBase (RFieldBase &&)=default
 
 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. More...
 
virtual ~RFieldBase ()
 
virtual void AcceptVisitor (RNTupleVisitor &visitor, int level) const
 
void Append (const RFieldValue &value)
 Write the given value into columns. The value object has to be of the same type as the field. More...
 
void Attach (std::unique_ptr< Detail::RFieldBase > child)
 
RIterator begin ()
 
virtual RFieldValue CaptureValue (void *where)=0
 Creates a value from a memory location with an already constructed object. More...
 
virtual RFieldBaseClone (std::string_view newName)=0
 
virtual void CommitCluster ()
 Perform housekeeping tasks for global to cluster-local index translation. More...
 
virtual void DestroyValue (const RFieldValue &value, bool dtorOnly=false)
 Releases the resources acquired during GenerateValue (memory and constructor) This implementation works for simple types but needs to be overwritten for complex ones. More...
 
RIterator end ()
 
void Flush () const
 Ensure that all received items are written from page buffers to the storage. More...
 
RFieldValue GenerateValue ()
 Generates a tree value of the field type and allocates new initialized memory according to the type. More...
 
virtual RFieldValue GenerateValue (void *where)=0
 Generates a tree value in a given location of size at least GetValueSize(). More...
 
virtual size_t GetAlignment () const
 For many types, the alignment requirement is equal to the size; otherwise override. More...
 
virtual RNTupleVersion GetFieldVersion () const
 Indicates an evolution of the mapping scheme from C++ type to columns. More...
 
RLevelInfo GetLevelInfo () const
 
std::string GetName () const
 
std::size_t GetNRepetitions () const
 
const RFieldBaseGetParent () const
 
ENTupleStructure GetStructure () const
 
std::string GetType () const
 
virtual RNTupleVersion GetTypeVersion () const
 Indicates an evolution of the C++ type itself. More...
 
virtual size_t GetValueSize () const =0
 The number of bytes taken by a value of the appropriate type. More...
 
bool IsSimple () const
 
RFieldBaseoperator= (const RFieldBase &)=delete
 
RFieldBaseoperator= (RFieldBase &&)=default
 
void Read (const RClusterIndex &clusterIndex, RFieldValue *value)
 
void Read (NTupleSize_t globalIndex, RFieldValue *value)
 Populate a single value with data from the tree, which needs to be of the fitting type. More...
 
void SetOrder (int o)
 
virtual void TraverseVisitor (RNTupleVisitor &visitor, int level=0) const
 Used for the visitor design pattern, see for example RNTupleReader::Print() More...
 

Static Public Member Functions

static std::string TypeName ()
 
- Static Public Member Functions inherited from ROOT::Experimental::Detail::RFieldBase
static RFieldBaseCreate (const std::string &fieldName, const std::string &typeName)
 Factory method to resurrect a field from the stored on-disk type information. More...
 

Additional Inherited Members

- Protected Member Functions inherited from ROOT::Experimental::Detail::RFieldBase
virtual void DoAppend (const RFieldValue &value)
 Operations on values of complex types, e.g. More...
 
virtual void DoGenerateColumns ()=0
 Creates the backing columns corresponsing to the field type and name. More...
 
virtual void DoReadGlobal (NTupleSize_t globalIndex, RFieldValue *value)
 
virtual void DoReadInCluster (const RClusterIndex &clusterIndex, RFieldValue *value)
 
- Protected Attributes inherited from ROOT::Experimental::Detail::RFieldBase
std::vector< std::unique_ptr< RColumn > > fColumns
 The columns are connected either to a sink or to a source (not to both); they are owned by the field. More...
 
RFieldBasefParent
 Sub fields point to their mother field. More...
 
RColumnfPrincipalColumn
 Points into fColumns. More...
 
std::vector< std::unique_ptr< RFieldBase > > fSubFields
 Collections and classes own sub fields. More...
 

#include <ROOT/RField.hxx>

Inheritance diagram for ROOT::Experimental::RField< ClusterSize_t >:
[legend]

Constructor & Destructor Documentation

◆ RField() [1/2]

ROOT::Experimental::RField< ClusterSize_t >::RField ( std::string_view  name)
inlineexplicit

Definition at line 486 of file RField.hxx.

◆ RField() [2/2]

ROOT::Experimental::RField< ClusterSize_t >::RField ( RField< ClusterSize_t > &&  other)
default

◆ ~RField()

Member Function Documentation

◆ CaptureValue()

Detail::RFieldValue ROOT::Experimental::RField< ClusterSize_t >::CaptureValue ( void where)
inlinefinalvirtual

Creates a value from a memory location with an already constructed object.

Implements ROOT::Experimental::Detail::RFieldBase.

Definition at line 511 of file RField.hxx.

◆ Clone()

RFieldBase * ROOT::Experimental::RField< ClusterSize_t >::Clone ( std::string_view  newName)
inlinefinalvirtual

Implements ROOT::Experimental::Detail::RFieldBase.

Definition at line 491 of file RField.hxx.

◆ DoGenerateColumns()

void ROOT::Experimental::RField< ClusterSize_t >::DoGenerateColumns ( )
finalvirtual

Creates the backing columns corresponsing to the field type and name.

Implements ROOT::Experimental::Detail::RFieldBase.

◆ GenerateValue() [1/2]

ROOT::Experimental::Detail::RFieldValue ROOT::Experimental::RField< ClusterSize_t >::GenerateValue ( void where)
inlinefinalvirtual

Generates a tree value in a given location of size at least GetValueSize().

Assumes that where has been allocated by malloc().

Implements ROOT::Experimental::Detail::RFieldBase.

Definition at line 510 of file RField.hxx.

◆ GenerateValue() [2/2]

template<typename... ArgsT>
ROOT::Experimental::Detail::RFieldValue ROOT::Experimental::RField< ClusterSize_t >::GenerateValue ( void where,
ArgsT &&...  args 
)
inline

Definition at line 504 of file RField.hxx.

◆ GetCollectionInfo() [1/2]

void ROOT::Experimental::RField< ClusterSize_t >::GetCollectionInfo ( const RClusterIndex clusterIndex,
RClusterIndex collectionStart,
ClusterSize_t size 
)
inline

Definition at line 521 of file RField.hxx.

◆ GetCollectionInfo() [2/2]

void ROOT::Experimental::RField< ClusterSize_t >::GetCollectionInfo ( NTupleSize_t  globalIndex,
RClusterIndex collectionStart,
ClusterSize_t size 
)
inline

Special help for offset fields.

Definition at line 518 of file RField.hxx.

◆ GetValueSize()

size_t ROOT::Experimental::RField< ClusterSize_t >::GetValueSize ( ) const
inlinefinalvirtual

The number of bytes taken by a value of the appropriate type.

Implements ROOT::Experimental::Detail::RFieldBase.

Definition at line 515 of file RField.hxx.

◆ Map() [1/2]

ClusterSize_t * ROOT::Experimental::RField< ClusterSize_t >::Map ( const RClusterIndex clusterIndex)
inline

Definition at line 498 of file RField.hxx.

◆ Map() [2/2]

Definition at line 495 of file RField.hxx.

◆ operator=()

RField & ROOT::Experimental::RField< ClusterSize_t >::operator= ( RField< ClusterSize_t > &&  other)
default

◆ TypeName()

static std::string ROOT::Experimental::RField< ClusterSize_t >::TypeName ( )
inlinestatic

Definition at line 485 of file RField.hxx.


The documentation for this class was generated from the following file: