Template specializations for ROOT's RVec.
The type-erased field for a RVec<Type>
Definition at line 114 of file RFieldSequenceContainer.hxx.
Classes | |
class | RRVecDeleter |
Public Member Functions | |
RRVecField (const RRVecField &)=delete | |
RRVecField (RRVecField &&)=default | |
RRVecField (std::string_view fieldName, std::unique_ptr< RFieldBase > itemField) | |
~RRVecField () override=default | |
void | AcceptVisitor (ROOT::Detail::RFieldVisitor &visitor) const final |
size_t | GetAlignment () const final |
As a rule of thumb, the alignment is equal to the size of the type. | |
size_t | GetValueSize () const final |
The number of bytes taken by a value of the appropriate type. | |
RRVecField & | operator= (RRVecField &&)=default |
RRVecField & | operator= (RRVecField &)=delete |
std::vector< RValue > | SplitValue (const RValue &value) const final |
Creates the list of direct child values given an existing value for this field. | |
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RFieldBase (const RFieldBase &)=delete | |
RFieldBase (RFieldBase &&)=default | |
RFieldBase (std::string_view name, std::string_view type, ROOT::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. | |
virtual | ~RFieldBase ()=default |
RSchemaIterator | begin () |
RConstSchemaIterator | begin () const |
RValue | BindValue (std::shared_ptr< void > objPtr) |
Creates a value from a memory location with an already constructed object. | |
RConstSchemaIterator | cbegin () const |
RConstSchemaIterator | cend () const |
std::unique_ptr< RFieldBase > | Clone (std::string_view newName) const |
Copies the field and its subfields using a possibly new name and a new, unconnected set of columns. | |
RBulkValues | CreateBulk () |
Creates a new, initially empty bulk. | |
template<> | |
std::unique_ptr< void, typename RFieldBase::RCreateObjectDeleter< void >::deleter > | CreateObject () const |
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. | |
template<> | |
std::unique_ptr< void, typename ROOT::RFieldBase::RCreateObjectDeleter< void >::deleter > | CreateObject () const |
RValue | CreateValue () |
Generates an object of the field's type, wraps it in a shared pointer and returns it as an RValue connected to the field. | |
RSchemaIterator | end () |
RConstSchemaIterator | end () const |
RColumnRepresentations::Selection_t | GetColumnRepresentatives () const |
Returns the fColumnRepresentative pointee or, if unset (always the case for artificial fields), the field's default representative. | |
std::vector< const RFieldBase * > | GetConstSubfields () const |
const std::string & | GetDescription () const |
Get the field's description. | |
const std::string & | GetFieldName () const |
virtual std::uint32_t | GetFieldVersion () const |
Indicates an evolution of the mapping scheme from C++ type to columns. | |
std::vector< RFieldBase * > | GetMutableSubfields () |
std::size_t | GetNRepetitions () const |
ROOT::DescriptorId_t | GetOnDiskId () const |
std::uint32_t | GetOnDiskTypeChecksum () const |
Return checksum stored in the field descriptor; only valid after a call to ConnectPageSource(), if the field stored a type checksum. | |
std::uint32_t | GetOnDiskTypeVersion () const |
Return the C++ type version stored in the field descriptor; only valid after a call to ConnectPageSource() | |
const RFieldBase * | GetParent () const |
std::string | GetQualifiedFieldName () const |
Returns the field name and parent field names separated by dots (grandparent.parent.child ) | |
EState | GetState () const |
ROOT::ENTupleStructure | GetStructure () const |
std::uint32_t | GetTraits () const |
const std::string & | GetTypeAlias () const |
virtual std::uint32_t | GetTypeChecksum () const |
Return the current TClass reported checksum of this class. Only valid if kTraitTypeChecksum is set. | |
const std::string & | GetTypeName () const |
virtual std::uint32_t | GetTypeVersion () const |
Indicates an evolution of the C++ type itself. | |
bool | HasDefaultColumnRepresentative () const |
Whether or not an explicit column representative was set. | |
bool | HasReadCallbacks () const |
bool | IsArtificial () const |
bool | IsSimple () const |
RFieldBase & | operator= (const RFieldBase &)=delete |
RFieldBase & | operator= (RFieldBase &&)=default |
void | SetColumnRepresentatives (const RColumnRepresentations::Selection_t &representatives) |
Fixes a column representative. | |
void | SetDescription (std::string_view description) |
void | SetOnDiskId (ROOT::DescriptorId_t id) |
Protected Member Functions | |
std::size_t | AppendImpl (const void *from) final |
Operations on values of complex types, e.g. | |
std::unique_ptr< RFieldBase > | BeforeConnectPageSource (ROOT::Internal::RPageSource &pageSource) final |
Called by ConnectPageSource() before connecting; derived classes may override this as appropriate, e.g. | |
std::unique_ptr< RFieldBase > | CloneImpl (std::string_view newName) const final |
Called by Clone(), which additionally copies the on-disk ID. | |
void | CommitClusterImpl () final |
void | ConstructValue (void *where) const final |
Constructs value in a given location of size at least GetValueSize(). Called by the base class' CreateValue(). | |
void | GenerateColumns () final |
Implementations in derived classes should create the backing columns corresponding to the field type for writing. | |
void | GenerateColumns (const ROOT::RNTupleDescriptor &desc) final |
Implementations in derived classes should create the backing columns corresponding to the field type for reading. | |
const RColumnRepresentations & | GetColumnRepresentations () const final |
Implementations in derived classes should return a static RColumnRepresentations object. | |
std::unique_ptr< RDeleter > | GetDeleter () const final |
std::size_t | ReadBulkImpl (const RBulkSpec &bulkSpec) final |
General implementation of bulk read. | |
void | ReadGlobalImpl (ROOT::NTupleSize_t globalIndex, void *to) final |
void | ReconcileOnDiskField (const RNTupleDescriptor &desc) final |
For non-artificial fields, check compatibility of the in-memory field and the on-disk field. | |
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size_t | AddReadCallback (ReadCallback_t func) |
Set a user-defined function to be called after reading a value, giving a chance to inspect and/or modify the value object. | |
std::size_t | Append (const void *from) |
Write the given value into columns. | |
void | Attach (std::unique_ptr< RFieldBase > child) |
Add a new subfield to the list of nested fields. | |
void | AutoAdjustColumnTypes (const ROOT::RNTupleWriteOptions &options) |
When connecting a field to a page sink, the field's default column representation is subject to adjustment according to the write options. | |
std::uint32_t | CompareOnDiskField (const RFieldDescriptor &fieldDesc, std::uint32_t ignoreBits) const |
Returns a combination of kDiff... flags, indicating peroperties that are different between the field at hand and the given on-disk field. | |
void * | CreateObjectRawPtr () const |
Factory method for the field's type. The caller owns the returned pointer. | |
const ColumnRepresentation_t & | EnsureCompatibleColumnTypes (const ROOT::RNTupleDescriptor &desc, std::uint16_t representationIndex) const |
Returns the on-disk column types found in the provided descriptor for fOnDiskId and the given representation index. | |
RResult< void > | EnsureMatchingOnDiskField (const RFieldDescriptor &fieldDesc, std::uint32_t ignoreBits=0) const |
Compares the field to the provieded on-disk field descriptor. | |
RResult< void > | EnsureMatchingTypePrefix (const RFieldDescriptor &fieldDesc, const std::vector< std::string > &prefixes) const |
Many fields accept a range of type prefixes for schema evolution, e.g. | |
template<typename... ColumnCppTs> | |
void | GenerateColumnsImpl () |
For writing, use the currently set column representative. | |
template<std::uint32_t ColumnIndexT, typename HeadT , typename... TailTs> | |
void | GenerateColumnsImpl (const ColumnRepresentation_t &representation, std::uint16_t representationIndex) |
Helpers for generating columns. | |
template<typename... ColumnCppTs> | |
void | GenerateColumnsImpl (const ROOT::RNTupleDescriptor &desc) |
For reading, use the on-disk column list. | |
virtual ROOT::RExtraTypeInfoDescriptor | GetExtraTypeInfo () const |
virtual bool | HasExtraTypeInfo () const |
void | Read (RNTupleLocalIndex localIndex, void *to) |
Populate a single value with data from the field. | |
void | Read (ROOT::NTupleSize_t globalIndex, void *to) |
Populate a single value with data from the field. | |
std::size_t | ReadBulk (const RBulkSpec &bulkSpec) |
Returns the number of newly available values, that is the number of bools in bulkSpec.fMaskAvail that flipped from false to true. | |
virtual void | ReadInClusterImpl (RNTupleLocalIndex localIndex, void *to) |
void | RemoveReadCallback (size_t idx) |
Protected Attributes | |
std::size_t | fBulkNRepetition = 1 |
RFieldBase * | fBulkSubfield = nullptr |
May be a direct PoD subfield or a sub-subfield of a fixed-size array of PoD. | |
std::size_t | fItemSize |
ROOT::Internal::RColumnIndex | fNWritten |
std::size_t | fValueSize |
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ROOT::Internal::RColumn * | fAuxiliaryColumn = nullptr |
Some fields have a second column in its column representation. | |
std::vector< std::unique_ptr< ROOT::Internal::RColumn > > | fAvailableColumns |
The columns are connected either to a sink or to a source (not to both); they are owned by the field. | |
std::vector< std::reference_wrapper< const ColumnRepresentation_t > > | fColumnRepresentatives |
Pointers into the static vector returned by RColumnRepresentations::GetSerializationTypes() when SetColumnRepresentatives() is called. | |
std::uint32_t | fOnDiskTypeChecksum = 0 |
TClass checksum cached from the descriptor after a call to ConnectPageSource(). | |
std::uint32_t | fOnDiskTypeVersion = kInvalidTypeVersion |
C++ type version cached from the descriptor after a call to ConnectPageSource() | |
RFieldBase * | fParent |
Subfields point to their mother field. | |
ROOT::Internal::RColumn * | fPrincipalColumn = nullptr |
All fields that have columns have a distinct main column. | |
std::vector< ReadCallback_t > | fReadCallbacks |
List of functions to be called after reading a value. | |
std::vector< std::unique_ptr< RFieldBase > > | fSubfields |
Collections and classes own subfields. | |
std::uint32_t | fTraits = 0 |
Properties of the type that allow for optimizations of collections of that type. | |
std::string | fTypeAlias |
A typedef or using name that was used when creating the field. | |
Static Private Member Functions | |
static unsigned char * | ResizeRVec (void *rvec, std::size_t nItems, std::size_t itemSize, const RFieldBase *itemField, RDeleter *itemDeleter) |
Private Attributes | |
std::unique_ptr< RDeleter > | fItemDeleter |
Friends | |
class | RArrayAsRVecField |
Additional Inherited Members | |
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enum | { kTraitTriviallyConstructible = 0x01 , kTraitTriviallyDestructible = 0x02 , kTraitMappable = 0x04 , kTraitTypeChecksum = 0x08 , kTraitInvalidField = 0x10 , kTraitEmulatedField = 0x20 , kTraitTrivialType = kTraitTriviallyConstructible | kTraitTriviallyDestructible } |
using | ColumnRepresentation_t = std::vector<ROOT::ENTupleColumnType> |
enum class | EState { kUnconnected , kConnectedToSink , kConnectedToSource } |
During its lifetime, a field undergoes the following possible state transitions: More... | |
using | RConstSchemaIterator = RSchemaIteratorTemplate<true> |
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. | |
static RResult< std::unique_ptr< RFieldBase > > | Create (const std::string &fieldName, const std::string &typeName) |
Factory method to create a field from a certain type given as string. | |
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static constexpr std::uint32_t | kInvalidTypeVersion = -1U |
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enum | { kDiffFieldVersion = 0x01 , kDiffTypeVersion = 0x02 , kDiffStructure = 0x04 , kDiffTypeName = 0x08 , kDiffNRepetitions = 0x10 } |
Bits used in CompareOnDisk() More... | |
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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. | |
static void | CallConstructValueOn (const RFieldBase &other, void *where) |
Allow derived classes to call ConstructValue(void *) and GetDeleter() on other (sub)fields. | |
static void * | CallCreateObjectRawPtrOn (RFieldBase &other) |
static void | CallReadOn (RFieldBase &other, RNTupleLocalIndex localIndex, void *to) |
static void | CallReadOn (RFieldBase &other, ROOT::NTupleSize_t globalIndex, void *to) |
static void | CallSetArtificialOn (RFieldBase &other) |
Allow parents to mark their childs as artificial fields (used in class and record fields) | |
static RResult< std::unique_ptr< RFieldBase > > | Create (const std::string &fieldName, const std::string &typeName, const ROOT::RCreateFieldOptions &options, const ROOT::RNTupleDescriptor *desc, ROOT::DescriptorId_t fieldId) |
Factory method to resurrect a field from the stored on-disk type information. | |
static std::unique_ptr< RDeleter > | GetDeleterOf (const RFieldBase &other) |
static ROOT::Internal::RColumn * | GetPrincipalColumnOf (const RFieldBase &other) |
Fields may need direct access to the principal column of their subfields, e.g. in RRVecField::ReadBulk() | |
static void | SetTypeAliasOf (RFieldBase &other, const std::string &alias) |
Allow class fields to adjust the type alias of their members. | |
#include <ROOT/RField/RFieldSequenceContainer.hxx>
ROOT::RRVecField::RRVecField | ( | std::string_view | fieldName, |
std::unique_ptr< RFieldBase > | itemField ) |
Definition at line 226 of file RFieldSequenceContainer.cxx.
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default |
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delete |
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overridedefault |
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finalvirtual |
Reimplemented from ROOT::RFieldBase.
Definition at line 521 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
Operations on values of complex types, e.g.
ones that involve multiple columns or for which no direct column type exists.
Reimplemented from ROOT::RFieldBase.
Definition at line 257 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
Called by ConnectPageSource() before connecting; derived classes may override this as appropriate, e.g.
for the application of I/O rules. In the process, the field at hand or its subfields may be marked as "artifical", i.e. introduced by schema evolution and not backed by on-disk information. May return a field substitute that fits the on-disk schema as a replacement for the field at hand. A field substitute must read into the same in-memory layout than the original field and field substitutions must not be cyclic.
Reimplemented from ROOT::RFieldBase.
Definition at line 447 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
Called by Clone(), which additionally copies the on-disk ID.
Implements ROOT::RFieldBase.
Definition at line 251 of file RFieldSequenceContainer.cxx.
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inlinefinalprotectedvirtual |
Reimplemented from ROOT::RFieldBase.
Definition at line 164 of file RFieldSequenceContainer.hxx.
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finalprotectedvirtual |
Constructs value in a given location of size at least GetValueSize(). Called by the base class' CreateValue().
Implements ROOT::RFieldBase.
Definition at line 468 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
Implementations in derived classes should create the backing columns corresponding to the field type for writing.
The default implementation does not attach any columns to the field.
Reimplemented from ROOT::RFieldBase.
Definition at line 437 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
Implementations in derived classes should create the backing columns corresponding to the field type for reading.
The default implementation does not attach any columns to the field. The method should check, using the page source and fOnDiskId
, if the column types match and throw if they don't.
Reimplemented from ROOT::RFieldBase.
Definition at line 442 of file RFieldSequenceContainer.cxx.
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finalvirtual |
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::RFieldBase.
Definition at line 516 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
Implementations in derived classes should return a static RColumnRepresentations object.
The default implementation does not attach any columns to the field.
Reimplemented from ROOT::RFieldBase.
Definition at line 427 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
Reimplemented from ROOT::RFieldBase.
Definition at line 491 of file RFieldSequenceContainer.cxx.
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finalvirtual |
The number of bytes taken by a value of the appropriate type.
Implements ROOT::RFieldBase.
Definition at line 511 of file RFieldSequenceContainer.cxx.
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default |
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delete |
General implementation of bulk read.
Loop over the required range and read values that are required and not already present. Derived classes may implement more optimized versions of this method. See ReadBulk() for the return value.
Reimplemented from ROOT::RFieldBase.
Definition at line 361 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
Reimplemented from ROOT::RFieldBase.
Definition at line 338 of file RFieldSequenceContainer.cxx.
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finalprotectedvirtual |
For non-artificial fields, check compatibility of the in-memory field and the on-disk field.
In the process, the field at hand may change its on-disk ID or perform other tasks related to automatic schema evolution. If the on-disk field is incompatible with the in-memory field at hand, an exception is thrown.
Reimplemented from ROOT::RFieldBase.
Definition at line 463 of file RFieldSequenceContainer.cxx.
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staticprivate |
Definition at line 276 of file RFieldSequenceContainer.cxx.
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finalvirtual |
Creates the list of direct child values given an existing value for this field.
E.g. a single value for the correct std::variant
or all the elements of a collection. The default implementation assumes no subvalues and returns an empty vector.
Reimplemented from ROOT::RFieldBase.
Definition at line 498 of file RFieldSequenceContainer.cxx.
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friend |
Definition at line 115 of file RFieldSequenceContainer.hxx.
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protected |
Definition at line 145 of file RFieldSequenceContainer.hxx.
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protected |
May be a direct PoD subfield or a sub-subfield of a fixed-size array of PoD.
Definition at line 147 of file RFieldSequenceContainer.hxx.
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private |
Definition at line 137 of file RFieldSequenceContainer.hxx.
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protected |
Definition at line 140 of file RFieldSequenceContainer.hxx.
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protected |
Definition at line 141 of file RFieldSequenceContainer.hxx.
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protected |
Definition at line 142 of file RFieldSequenceContainer.hxx.