DataStorm::MultiKeyReader< Key, Value, UpdateTag > Class Template Reference

The key reader to read the data element associated with a given set of keys. More...

#include <DataStorm/DataStorm.h>

Inheritance diagram for DataStorm::MultiKeyReader< Key, Value, UpdateTag >:

Public Member Functions
template<typename SampleFilterCriteria>
	MultiKeyReader (const Topic< Key, Value, UpdateTag > &topic, const std::vector< Key > &keys, const Filter< SampleFilterCriteria > &sampleFilter, std::string name=std::string(), const ReaderConfig &config=ReaderConfig())
	Constructs a new reader for the given keys and sample filter criteria.
	MultiKeyReader (const Topic< Key, Value, UpdateTag > &topic, const std::vector< Key > &keys, std::string name=std::string(), const ReaderConfig &config=ReaderConfig())
	Constructs a new reader for the given keys.
	MultiKeyReader (MultiKeyReader &&reader) noexcept
	Move constructor.
MultiKeyReader &	operator= (MultiKeyReader &&reader) noexcept
	Move assignment operator.

Detailed Description

template<typename Key, typename Value, typename UpdateTag = std::string>
class DataStorm::MultiKeyReader< Key, Value, UpdateTag >

The key reader to read the data element associated with a given set of keys.

A multi-key reader retains the current value of every key it has received and not since seen removed, so that it can resolve later partial updates against it. This per-key state is independent of the reader's sampleCount and sampleLifetime history settings, and is released when the reader receives the key's remove sample. A reader connected to writers over an unbounded set of keys therefore accumulates one current value per key.

Definition at line 510 of file DataStorm.h.

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

• DataStorm/DataStorm.h