RColumnElement.hxx File Reference

#include <ROOT/RColumnModel.hxx>
#include <ROOT/RConfig.hxx>
#include <ROOT/RError.hxx>
#include <ROOT/RFloat16.hxx>
#include <ROOT/RNTupleUtil.hxx>
#include <Byteswap.h>
#include <TError.h>
#include <cstring>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <string>
#include <type_traits>
#include <typeinfo>
#include <utility>

Include dependency graph for RColumnElement.hxx:

This graph shows which files directly or indirectly include this file:

Classes
class	ROOT::Experimental::Internal::RColumnElement< CppT, ColumnT >
class	ROOT::Experimental::Internal::RColumnElement< bool, EColumnType::kBit >
class	ROOT::Experimental::Internal::RColumnElement< bool, EColumnType::kUnknown >
class	ROOT::Experimental::Internal::RColumnElement< char, EColumnType::kByte >
class	ROOT::Experimental::Internal::RColumnElement< char, EColumnType::kChar >
class	ROOT::Experimental::Internal::RColumnElement< char, EColumnType::kUnknown >
class	ROOT::Experimental::Internal::RColumnElement< ClusterSize_t, EColumnType::kIndex32 >
class	ROOT::Experimental::Internal::RColumnElement< ClusterSize_t, EColumnType::kIndex64 >
class	ROOT::Experimental::Internal::RColumnElement< ClusterSize_t, EColumnType::kSplitIndex32 >
class	ROOT::Experimental::Internal::RColumnElement< ClusterSize_t, EColumnType::kSplitIndex64 >
class	ROOT::Experimental::Internal::RColumnElement< ClusterSize_t, EColumnType::kUnknown >
class	ROOT::Experimental::Internal::RColumnElement< double, EColumnType::kReal32 >
class	ROOT::Experimental::Internal::RColumnElement< double, EColumnType::kReal64 >
class	ROOT::Experimental::Internal::RColumnElement< double, EColumnType::kSplitReal32 >
class	ROOT::Experimental::Internal::RColumnElement< double, EColumnType::kSplitReal64 >
class	ROOT::Experimental::Internal::RColumnElement< double, EColumnType::kUnknown >
class	ROOT::Experimental::Internal::RColumnElement< float, EColumnType::kReal16 >
class	ROOT::Experimental::Internal::RColumnElement< float, EColumnType::kReal32 >
class	ROOT::Experimental::Internal::RColumnElement< float, EColumnType::kSplitReal32 >
class	ROOT::Experimental::Internal::RColumnElement< float, EColumnType::kUnknown >
class	ROOT::Experimental::Internal::RColumnElement< RColumnSwitch, EColumnType::kSwitch >
class	ROOT::Experimental::Internal::RColumnElement< RColumnSwitch, EColumnType::kUnknown >
class	ROOT::Experimental::Internal::RColumnElementBase
	A column element encapsulates the translation between basic C++ types and their column representation. More...
class	ROOT::Experimental::Internal::RColumnElementCastLE< CppT, NarrowT >
	Base class for columns storing elements of wider in-memory types, such as 64bit in-memory offsets to Index32 columns. More...
class	ROOT::Experimental::Internal::RColumnElementDeltaSplitLE< CppT, NarrowT >
	Base class for delta + split columns (index columns) whose on-storage representation is little-endian. More...
class	ROOT::Experimental::Internal::RColumnElementLE< CppT >
	Base class for columns whose on-storage representation is little-endian. More...
class	ROOT::Experimental::Internal::RColumnElementSplitLE< CppT, NarrowT >
	Base class for split columns whose on-storage representation is little-endian. More...
class	ROOT::Experimental::Internal::RColumnElementZigzagSplitLE< CppT, NarrowT >
	Base class for zigzag + split columns (signed integer columns) whose on-storage representation is little-endian. More...
struct	ROOT::Experimental::Internal::RColumnElement< RColumnSwitch, EColumnType::kSwitch >::RSwitchElement

Namespaces
namespace	ROOT
	tbb::task_arena is an alias of tbb::interface7::task_arena, which doesn't allow to forward declare tbb::task_arena without forward declaring tbb::interface7
namespace	ROOT::Experimental
namespace	ROOT::Experimental::Internal

Macros
#define	__RCOLUMNELEMENT_SPEC_BODY(CppT, BaseT, BitsOnStorage)
#define	DECLARE_RCOLUMNELEMENT_SPEC(CppT, ColumnT, BitsOnStorage, BaseT, ...)
	These macros are used to declare RColumnElement template specializations below.
#define	DECLARE_RCOLUMNELEMENT_SPEC_SIMPLE(CppT, ColumnT, BitsOnStorage)
#define	R__LITTLE_ENDIAN   0

Detailed Description

Author

Jakob Blomer jblom.nosp@m.er@c.nosp@m.ern.c.nosp@m.h

Date

2018-10-09

Warning

This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!

Definition in file RColumnElement.hxx.

Macro Definition Documentation

__RCOLUMNELEMENT_SPEC_BODY

#define __RCOLUMNELEMENT_SPEC_BODY	(		CppT,
			BaseT,
			BitsOnStorage
	)

Value:

   static constexpr std::size_t kSize = sizeof(CppT);           \
   static constexpr std::size_t kBitsOnStorage = BitsOnStorage; \
   RColumnElement() : BaseT(kSize, kBitsOnStorage) {}           \
   bool IsMappable() const final                                \
   {                                                            \
      return kIsMappable;                                       \
   }

Definition at line 650 of file RColumnElement.hxx.

DECLARE_RCOLUMNELEMENT_SPEC

#define DECLARE_RCOLUMNELEMENT_SPEC	(		CppT,
			ColumnT,
			BitsOnStorage,
			BaseT,
			...
	)

Value:

   template <>                                                                \
   class RColumnElement<CppT, ColumnT> : public BaseT __VA_ARGS__ {           \
   public:                                                                    \
      __RCOLUMNELEMENT_SPEC_BODY(CppT, BaseT, BitsOnStorage)                  \
   }

These macros are used to declare RColumnElement template specializations below.

Additional arguments can be used to forward template parameters to the base class, e.g.

DECLARE_RCOLUMNELEMENT_SPEC(std::int64_t, EColumnType::kInt32, 32,
                            RColumnElementCastLE, <std::int64_t, std::int32_t>);

Definition at line 664 of file RColumnElement.hxx.

DECLARE_RCOLUMNELEMENT_SPEC_SIMPLE

#define DECLARE_RCOLUMNELEMENT_SPEC_SIMPLE	(		CppT,
			ColumnT,
			BitsOnStorage
	)

Value:

   template <>                                                            \
   class RColumnElement<CppT, ColumnT> : public RColumnElementBase {      \
   public:                                                                \
      static constexpr bool kIsMappable = true;                           \
      __RCOLUMNELEMENT_SPEC_BODY(CppT, RColumnElementBase, BitsOnStorage) \
   }

Definition at line 670 of file RColumnElement.hxx.

R__LITTLE_ENDIAN

#define R__LITTLE_ENDIAN   0

Definition at line 42 of file RColumnElement.hxx.