The input API of the Data Processing Layer This class holds the inputs which are valid for processing. The user can get an instance for it via the ProcessingContext and can use it to retrieve the inputs, either by name or by index. A few utility methods are provided to automatically cast the (deserialized) inputs to known types. More...

#include <InputRecord.h>

Classes
class	Deleter

struct	InputPos

class	InputRecordIterator

class	Iterator

Public Types
using	DataHeader = o2::header::DataHeader

using	iterator = InputRecordIterator< DataRef >

using	const_iterator = InputRecordIterator< const DataRef >

Public Member Functions
	InputRecord (std::vector< InputRoute > const &inputs, InputSpan &span, ServiceRegistryRef)

int	getPos (const char *name) const

int	getPos (ConcreteDataMatcher matcher) const

int	getPos (const std::string &name) const

DataRef	getByPos (int pos, int part=0) const

DataRef	getFirstValid (bool throwOnFailure=false) const
	Get the ref of the first valid input. If requested, throw an error if none is found.

size_t	getNofParts (int pos) const

DataRef	getAtIndices (int pos, DataRefIndices indices) const
	O(1) access to the part described by indices in slot pos.

DataRefIndices	nextIndices (int pos, DataRefIndices current) const
	O(1) advance from current to the next part's indices in slot pos.

DataRef	getDataRefByString (const char *bindingName, int part=0) const

template<typename R > requires std::is_convertible_v<R, char const*>
DataRef	getRef (R binding, int part=0) const

template<typename R > requires requires(R r) { r.c_str(); }
DataRef	getRef (R binding, int part=0) const

template<typename R > requires std::is_convertible_v<R, DataRef>
DataRef	getRef (R ref, int part=0) const

template<typename T = DataRef, typename R >
decltype(auto)	get (R binding, int part=0) const

template<typename T = DataRef, typename R > requires std::same_as<T, CCDBMetadataExtractor>
std::map< std::string, std::string > &	get (R binding, int part=0) const

template<typename T > requires (std::same_as<T, DataRef>)
decltype(auto)	get (ConcreteDataMatcher matcher, int part=0)

template<typename T > requires (std::same_as<T, TableConsumer>)
decltype(auto)	get (ConcreteDataMatcher matcher, int part=0)

bool	isValid (std::string const &s) const
	Helper method to be used to check if a given part of the InputRecord is present.

bool	isValid (char const *s) const
	Helper method to be used to check if a given part of the InputRecord is present.

bool	isValid (int pos) const

size_t	size () const

size_t	countValidInputs () const

const_iterator	begin () const

const_iterator	end () const

InputSpan &	span ()

Static Public Member Functions
static InputPos	getPos (std::vector< InputRoute > const &routes, ConcreteDataMatcher matcher)

static DataRef	getByPos (std::vector< InputRoute > const &routes, InputSpan const &span, int pos, int part=0)

Detailed Description

The input API of the Data Processing Layer This class holds the inputs which are valid for processing. The user can get an instance for it via the ProcessingContext and can use it to retrieve the inputs, either by name or by index. A few utility methods are provided to automatically cast the (deserialized) inputs to known types.

The @ref get(binding) method is implemeted for the following types:

(a) DataRef holding header and payload information, this is also the default get method without template parameter
(b) std::string
(c) const char* this is meant for C-style strings which are 0 terminated, there is no length information
(d) TableConsumer
(f) span over messageable type T
(g) std::vector of messageable type or type with ROOT dictionary
(h) messageable type T
(i) pointer type T* for types with ROOT dictionary or messageable types

The return type of get(binding) is:

(a) DataRef object
(b) std::string copy of the payload
(c) const char* to payload content
(d) unique_ptr of TableConsumer
(e) object by move
(f) span object over original payload
(g) vector by move
(h) reference to object
(i) object with pointer-like behavior (unique_ptr)

Examples

   auto& v1 = get<int>("input1");
   auto v2 = get<vector<int>>("input2");
   auto v3 = get<TList*>("input3");
   auto v4 = get<vector<TParticle>>("input4");

Validity of inputs: Not all input slots are always valid if a custom completion policy is chosen. Validity can be checked using method isValid.

Iterator functionality is implemented to iterate over the list of DataRef objects, including begin() and end() methods.

   for (auto const& ref : inputs) {
     // do something with DataRef object ref
   }

Definition at line 102 of file InputRecord.h.

Member Typedef Documentation

◆ const_iterator

using o2::framework::InputRecord::const_iterator = InputRecordIterator<const DataRef>

Definition at line 743 of file InputRecord.h.

◆ DataHeader

using o2::framework::InputRecord::DataHeader = o2::header::DataHeader

Definition at line 105 of file InputRecord.h.

◆ iterator

using o2::framework::InputRecord::iterator = InputRecordIterator<DataRef>

Definition at line 742 of file InputRecord.h.

Constructor & Destructor Documentation

◆ InputRecord()

o2::framework::InputRecord::InputRecord	(	std::vector< InputRoute > const &	inputs,
		InputSpan &	span,
		ServiceRegistryRef	registry
	)

Definition at line 36 of file InputRecord.cxx.

Member Function Documentation

◆ begin()

const_iterator o2::framework::InputRecord::begin ( ) const

inline

Definition at line 745 of file InputRecord.h.

◆ countValidInputs()

size_t o2::framework::InputRecord::countValidInputs ( ) const

Returns: the total number of valid inputs in the InputRecord. Invalid inputs might happen if the CompletionPolicy allows incomplete records to be consumed or processed.

Definition at line 178 of file InputRecord.cxx.

◆ end()

const_iterator o2::framework::InputRecord::end ( ) const

inline

Definition at line 750 of file InputRecord.h.

◆ get() [1/4]

template<typename T >
requires (std::same_as<T, DataRef>)

decltype(auto) o2::framework::InputRecord::get	(	ConcreteDataMatcher	matcher,
		int	part = `0`
	)

inline

Definition at line 527 of file InputRecord.h.

◆ get() [2/4]

template<typename T >
requires (std::same_as<T, TableConsumer>)

decltype(auto) o2::framework::InputRecord::get	(	ConcreteDataMatcher	matcher,
		int	part = `0`
	)

inline

Definition at line 539 of file InputRecord.h.

◆ get() [3/4]

template<typename T = DataRef, typename R >

decltype(auto) o2::framework::InputRecord::get	(	R	binding,
		int	part = `0`
	)		const

inline

Get the object of specified type T for the binding R. If R is a string like object, we look up by name the InputSpec and return the data associated to the given label. If R is a DataRef, we extract the result object from the Payload, following the information provided by the Header. The actual operation and cast depends on the target data type and the serialization type of the incoming data. By default we return a DataRef, which is the pair of pointers to the header and payload of the O2 Message. See Inputrecord class description for supported types.

Parameters

ref	DataRef with pointers to input spec, header, and payload

substitution for container of non-messageable objects with ROOT dictionary Notice that this will return a copy of the actual contents of the buffer, because the buffer is actually serialised. The extracted container is swaped to local, container, C++11 and beyond will implicitly apply return value optimization.

Returns: std container object

Definition at line 259 of file InputRecord.h.

◆ get() [4/4]

template<typename T = DataRef, typename R >
requires std::same_as<T, CCDBMetadataExtractor>

std::map< std::string, std::string > & o2::framework::InputRecord::get	(	R	binding,
		int	part = `0`
	)		const

inline

Definition at line 483 of file InputRecord.h.

◆ getAtIndices()

DataRef o2::framework::InputRecord::getAtIndices	(	int	pos,
		DataRefIndices	indices
	)		const

O(1) access to the part described by indices in slot pos.

Definition at line 143 of file InputRecord.cxx.

◆ getByPos() [1/2]

DataRef o2::framework::InputRecord::getByPos	(	int	pos,
		int	part = `0`
	)		const

Definition at line 86 of file InputRecord.cxx.

◆ getByPos() [2/2]

DataRef o2::framework::InputRecord::getByPos	(	std::vector< InputRoute > const &	routes,
		InputSpan const &	span,
		int	pos,
		int	part = `0`
	)

static

Definition at line 91 of file InputRecord.cxx.

◆ getDataRefByString()

DataRef o2::framework::InputRecord::getDataRefByString	(	const char *	bindingName,
		int	part = `0`
	)		const

inline

Definition at line 216 of file InputRecord.h.

◆ getFirstValid()

DataRef o2::framework::InputRecord::getFirstValid ( bool throwOnFailure = false ) const

Get the ref of the first valid input. If requested, throw an error if none is found.

Definition at line 120 of file InputRecord.cxx.

◆ getNofParts()

size_t o2::framework::InputRecord::getNofParts ( int pos ) const

Definition at line 135 of file InputRecord.cxx.

◆ getPos() [1/4]

int o2::framework::InputRecord::getPos ( ConcreteDataMatcher matcher ) const

Definition at line 61 of file InputRecord.cxx.

◆ getPos() [2/4]

int o2::framework::InputRecord::getPos ( const char * name ) const

Definition at line 45 of file InputRecord.cxx.

◆ getPos() [3/4]

int o2::framework::InputRecord::getPos ( const std::string & name ) const

Definition at line 81 of file InputRecord.cxx.

◆ getPos() [4/4]

InputRecord::InputPos o2::framework::InputRecord::getPos	(	std::vector< InputRoute > const &	routes,
		ConcreteDataMatcher	matcher
	)

static

Definition at line 66 of file InputRecord.cxx.

◆ getRef() [1/3]

template<typename R >
requires std::is_convertible_v<R, char const*>

DataRef o2::framework::InputRecord::getRef	(	R	binding,
		int	part = `0`
	)		const

inline

Definition at line 228 of file InputRecord.h.

◆ getRef() [2/3]

template<typename R >
requires requires(R r) { r.c_str(); }

DataRef o2::framework::InputRecord::getRef	(	R	binding,
		int	part = `0`
	)		const

inline

Definition at line 235 of file InputRecord.h.

◆ getRef() [3/3]

template<typename R >
requires std::is_convertible_v<R, DataRef>

DataRef o2::framework::InputRecord::getRef	(	R	ref,
		int	part = `0`
	)		const

inline

Definition at line 242 of file InputRecord.h.

◆ isValid() [1/3]

bool o2::framework::InputRecord::isValid ( char const * s ) const

Helper method to be used to check if a given part of the InputRecord is present.

Definition at line 157 of file InputRecord.cxx.

◆ isValid() [2/3]

bool o2::framework::InputRecord::isValid ( int pos ) const

Definition at line 166 of file InputRecord.cxx.

◆ isValid() [3/3]

bool o2::framework::InputRecord::isValid ( std::string const & s ) const

inline

Helper method to be used to check if a given part of the InputRecord is present.

Definition at line 547 of file InputRecord.h.

◆ nextIndices()

DataRefIndices o2::framework::InputRecord::nextIndices	(	int	pos,
		DataRefIndices	current
	)		const

inline

O(1) advance from current to the next part's indices in slot pos.

Definition at line 210 of file InputRecord.h.

◆ size()

size_t o2::framework::InputRecord::size ( ) const

Returns: the total number of inputs in the InputRecord. Notice that these will include both valid and invalid inputs (i.e. inputs which have not arrived yet), depending on the CompletionPolicy you have (using the default policy all inputs will be valid).

Definition at line 152 of file InputRecord.cxx.

◆ span()

InputSpan & o2::framework::InputRecord::span ( )

inline

Definition at line 755 of file InputRecord.h.

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

/home/runner/work/AliceO2/AliceO2/Framework/Core/include/Framework/InputRecord.h
/home/runner/work/AliceO2/AliceO2/Framework/Core/src/InputRecord.cxx

Classes

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

Member Typedef Documentation

◆ const_iterator

◆ DataHeader

◆ iterator

Constructor & Destructor Documentation

◆ InputRecord()

Member Function Documentation

◆ begin()

◆ countValidInputs()

◆ end()

◆ get() [1/4]

◆ get() [2/4]

◆ get() [3/4]

◆ get() [4/4]

◆ getAtIndices()

◆ getByPos() [1/2]

◆ getByPos() [2/2]

◆ getDataRefByString()

◆ getFirstValid()

◆ getNofParts()

◆ getPos() [1/4]

◆ getPos() [2/4]

◆ getPos() [3/4]

◆ getPos() [4/4]

◆ getRef() [1/3]

◆ getRef() [2/3]

◆ getRef() [3/3]

◆ isValid() [1/3]

◆ isValid() [2/3]

◆ isValid() [3/3]

◆ nextIndices()

◆ size()

◆ span()