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columnar::TestUtils::RNTFieldReader< T > Class Template Referencefinal
Collaboration diagram for columnar::TestUtils::RNTFieldReader< T >:

Public Member Functions

 RNTFieldReader (const std::string &val_fieldName)
 ~RNTFieldReader () noexcept
 RNTFieldReader (const RNTFieldReader &)=delete
RNTFieldReader & operator= (const RNTFieldReader &)=delete
const std::string & fieldName () const
std::string columnName () const
std::string containerName () const
void connectRNTuple (ROOT::RNTupleReader *reader, ROOT::Experimental::RNTupleInspector *inspector)
void connectTree (const Backend &b)
const T & getEntry (Long64_t entry)
const T & getCachedEntry () const
std::optional< float > entrySize () const
std::optional< float > uncompressedSize () const
std::optional< unsigned > numBaskets ()

Private Attributes

std::string m_FieldName
std::unique_ptr< ROOT::RNTupleView< T > > m_view
ROOT::Experimental::RNTupleInspector * m_inspector = nullptr
ROOT::RNTupleReader * m_reader = nullptr
const T * m_data = nullptr

Detailed Description

template<typename T>
class columnar::TestUtils::RNTFieldReader< T >

Definition at line 29 of file ColumnReaderRNTuple.cxx.

Constructor & Destructor Documentation

◆ RNTFieldReader() [1/2]

template<typename T>
columnar::TestUtils::RNTFieldReader< T >::RNTFieldReader ( const std::string & val_fieldName)
inline

Definition at line 38 of file ColumnReaderRNTuple.cxx.

39 : m_FieldName(val_fieldName)
40 {}

◆ ~RNTFieldReader()

template<typename T>
columnar::TestUtils::RNTFieldReader< T >::~RNTFieldReader ( )
inlinenoexcept

Definition at line 42 of file ColumnReaderRNTuple.cxx.

42{}

◆ RNTFieldReader() [2/2]

template<typename T>
columnar::TestUtils::RNTFieldReader< T >::RNTFieldReader ( const RNTFieldReader< T > & )
delete

Member Function Documentation

◆ columnName()

template<typename T>
std::string columnar::TestUtils::RNTFieldReader< T >::columnName ( ) const
inlinenodiscard

Definition at line 51 of file ColumnReaderRNTuple.cxx.

52 {
53 std::string columnName = m_FieldName;
54 if (auto index = columnName.find("AuxDyn:"); index != std::string::npos)
55 columnName.replace(index, 6, "");
56 else if (auto index = columnName.find("Aux:."); index != std::string::npos)
57 columnName.replace(index, 4, "");
58 else if (auto index = columnName.find("Aux:"); index != std::string::npos)
59 columnName.replace(index, 3, "");
60 else if (columnName.find(":") != std::string::npos)
61 throw std::runtime_error("field name does not contain AuxDyn or Aux: " + m_FieldName);
62 std::replace(columnName.begin(), columnName.end(), ':', '.');
63
64 return columnName;
65 }

◆ connectRNTuple()

template<typename T>
void columnar::TestUtils::RNTFieldReader< T >::connectRNTuple ( ROOT::RNTupleReader * reader,
ROOT::Experimental::RNTupleInspector * inspector )
inline

Definition at line 79 of file ColumnReaderRNTuple.cxx.

81 {
82 m_inspector = inspector;
83 m_reader = reader;
84 m_view = std::make_unique<ROOT::RNTupleView<T>>(reader->GetView<T>(m_FieldName));
85
86 if (!m_view)
87 throw std::runtime_error("failed to get field: " + m_FieldName);
88 }
columnar::TestUtils::RNTFieldReader::m_inspector
ROOT::Experimental::RNTupleInspector * m_inspector
Definition ColumnReaderRNTuple.cxx:33
columnar::TestUtils::RNTFieldReader::m_view
std::unique_ptr< ROOT::RNTupleView< T > > m_view
Definition ColumnReaderRNTuple.cxx:32

◆ connectTree()

template<typename T>
void columnar::TestUtils::RNTFieldReader< T >::connectTree ( const Backend & b)
inline

Definition at line 90 of file ColumnReaderRNTuple.cxx.

91 {
92 auto* rntbackend = std::get<RNTupleBackend*>(b); // throws if wrong backend
93
94 if (!rntbackend->reader || !rntbackend->inspector)
95 throw std::runtime_error("RNTuple backend not properly initialized");
96 connectRNTuple(rntbackend->reader, rntbackend->inspector);
97 }
columnar::TestUtils::RNTFieldReader::connectRNTuple
void connectRNTuple(ROOT::RNTupleReader *reader, ROOT::Experimental::RNTupleInspector *inspector)
Definition ColumnReaderRNTuple.cxx:79

◆ containerName()

template<typename T>
std::string columnar::TestUtils::RNTFieldReader< T >::containerName ( ) const
inlinenodiscard

Definition at line 67 of file ColumnReaderRNTuple.cxx.

68 {
69 if (auto index = m_FieldName.find("AuxDyn:"); index != std::string::npos)
70 return m_FieldName.substr(0, index);
71 else if (auto index = m_FieldName.find("Aux:"); index != std::string::npos)
72 return m_FieldName.substr(0, index);
73 else if (m_FieldName.find(":") == std::string::npos)
74 return m_FieldName;
75 else
76 throw std::runtime_error("field name does not contain AuxDyn or Aux: " + m_FieldName);
77 }

◆ entrySize()

template<typename T>
std::optional< float > columnar::TestUtils::RNTFieldReader< T >::entrySize ( ) const
inline

Definition at line 117 of file ColumnReaderRNTuple.cxx.

118 {
119
120 const ROOT::Experimental::RNTupleInspector::RFieldTreeInspector& fieldTreeInspector = m_inspector->GetFieldTreeInspector(m_FieldName);
121 return static_cast<float>(fieldTreeInspector.GetCompressedSize()) /
122 m_inspector->GetDescriptor().GetNEntries();
123 }

◆ fieldName()

template<typename T>
const std::string & columnar::TestUtils::RNTFieldReader< T >::fieldName ( ) const
inlinenodiscard

Definition at line 46 of file ColumnReaderRNTuple.cxx.

47 {
48 return m_FieldName;
49 }

◆ getCachedEntry()

template<typename T>
const T & columnar::TestUtils::RNTFieldReader< T >::getCachedEntry ( ) const
inline

Definition at line 112 of file ColumnReaderRNTuple.cxx.

113 {
114 return *m_data;
115 }

◆ getEntry()

template<typename T>
const T & columnar::TestUtils::RNTFieldReader< T >::getEntry ( Long64_t entry)
inline

Definition at line 100 of file ColumnReaderRNTuple.cxx.

101 {
102 if (!m_view)
103 throw std::runtime_error("field not connected: " + m_FieldName);
104
105 m_data = &((*m_view)(static_cast<ROOT::NTupleSize_t>(entry)));
106
107 if (m_data == nullptr)
108 throw std::runtime_error("got nullptr reading data for field: " + m_FieldName);
109 return *m_data;
110 }

◆ numBaskets()

template<typename T>
std::optional< unsigned > columnar::TestUtils::RNTFieldReader< T >::numBaskets ( )
inline

Definition at line 134 of file ColumnReaderRNTuple.cxx.

135 {
136 // placeholder
137 return std::nullopt;
138 }

◆ operator=()

template<typename T>
RNTFieldReader & columnar::TestUtils::RNTFieldReader< T >::operator= ( const RNTFieldReader< T > & )
delete

◆ uncompressedSize()

template<typename T>
std::optional< float > columnar::TestUtils::RNTFieldReader< T >::uncompressedSize ( ) const
inline

Definition at line 125 of file ColumnReaderRNTuple.cxx.

126 {
127
128 const ROOT::Experimental::RNTupleInspector::RFieldTreeInspector& fieldTreeInspector = m_inspector->GetFieldTreeInspector(m_FieldName);
129
130 return static_cast<float>(fieldTreeInspector.GetUncompressedSize()) /
131 m_inspector->GetDescriptor().GetNEntries();
132 }

Member Data Documentation

◆ m_data

template<typename T>
const T* columnar::TestUtils::RNTFieldReader< T >::m_data = nullptr
private

Definition at line 35 of file ColumnReaderRNTuple.cxx.

◆ m_FieldName

template<typename T>
std::string columnar::TestUtils::RNTFieldReader< T >::m_FieldName
private

Definition at line 31 of file ColumnReaderRNTuple.cxx.

◆ m_inspector

template<typename T>
ROOT::Experimental::RNTupleInspector* columnar::TestUtils::RNTFieldReader< T >::m_inspector = nullptr
private

Definition at line 33 of file ColumnReaderRNTuple.cxx.

◆ m_reader

template<typename T>
ROOT::RNTupleReader* columnar::TestUtils::RNTFieldReader< T >::m_reader = nullptr
private

Definition at line 34 of file ColumnReaderRNTuple.cxx.

◆ m_view

template<typename T>
std::unique_ptr<ROOT::RNTupleView<T> > columnar::TestUtils::RNTFieldReader< T >::m_view
private

Definition at line 32 of file ColumnReaderRNTuple.cxx.

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