Some fields have multiple possible column representations, e.g.
with or without split encoding. All column representations supported for writing also need to be supported for reading. In addition, fields can support extra column representations for reading only, e.g. a 64bit integer reading from a 32bit column. The defined column representations must be supported by corresponding column packing/unpacking implementations, i.e. for the example above, the unpacking of 32bit ints to 64bit pages must be implemented in RColumnElement.hxx
Definition at line 142 of file RFieldBase.hxx.
Public Types | |
using | Selection_t = std::vector< ColumnRepresentation_t > |
A list of column representations. | |
Public Member Functions | |
RColumnRepresentations () | |
RColumnRepresentations (const Selection_t &serializationTypes, const Selection_t &deserializationExtraTypes) | |
const Selection_t & | GetDeserializationTypes () const |
const ColumnRepresentation_t & | GetSerializationDefault () const |
The first column list from fSerializationTypes is the default for writing. | |
const Selection_t & | GetSerializationTypes () const |
Private Attributes | |
Selection_t | fDeserializationTypes |
The union of the serialization types and the deserialization extra types. | |
Selection_t | fSerializationTypes |
#include <ROOT/RFieldBase.hxx>
using ROOT::Experimental::RFieldBase::RColumnRepresentations::Selection_t = std::vector<ColumnRepresentation_t> |
A list of column representations.
Definition at line 145 of file RFieldBase.hxx.
ROOT::Experimental::RFieldBase::RColumnRepresentations::RColumnRepresentations | ( | ) |
Definition at line 427 of file RField.cxx.
ROOT::Experimental::RFieldBase::RColumnRepresentations::RColumnRepresentations | ( | const Selection_t & | serializationTypes, |
const Selection_t & | deserializationExtraTypes | ||
) |
Definition at line 434 of file RField.cxx.
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inline |
Definition at line 153 of file RFieldBase.hxx.
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inline |
The first column list from fSerializationTypes is the default for writing.
Definition at line 151 of file RFieldBase.hxx.
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inline |
Definition at line 152 of file RFieldBase.hxx.
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private |
The union of the serialization types and the deserialization extra types.
Duplicates the serialization types list but the benenfit is that GetDeserializationTypes does not need to compile the list.
Definition at line 159 of file RFieldBase.hxx.
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private |
Definition at line 156 of file RFieldBase.hxx.