osmscout::FeatureReader< F > Class Template Reference

#include <libosmscout/include/osmscout/FeatureReader.h>

Public Member Functions
	FeatureReader (const TypeConfig &typeConfig)
bool	GetIndex (const FeatureValueBuffer &buffer, size_t &index) const
bool	IsSet (const FeatureValueBuffer &buffer) const

Detailed Description

template<class F>
class osmscout::FeatureReader< F >

Helper template class for easy access to flag-like Features.

Each type may have stored the feature in request at a different index. The FeatureReader caches the index for each type once in the constructor and later on allows access to the feature in O(1) - without iterating of all feature(values) of an object.

Constructor & Destructor Documentation

FeatureReader()

template<class F>

osmscout::FeatureReader< F >::FeatureReader ( const TypeConfig & typeConfig )

explicit

Member Function Documentation

GetIndex()

template<class F>

bool osmscout::FeatureReader< F >::GetIndex	(	const FeatureValueBuffer &	buffer,
		size_t &	index ) const

Returns the index of the Feature/FeatureValue within the given FeatureValueBuffer.

Parameters

buffer	The FeatureValueBuffer instance
index	The index

Returns

true, if there is a valid index 8because the type has such feature), else false

IsSet()

template<class F>

bool osmscout::FeatureReader< F >::IsSet

(

const FeatureValueBuffer &

buffer

)

const

Returns true, if the feature is set for the given FeatureValueBuffer

Parameters

buffer

The FeatureValueBuffer instance

Returns

true if set, else false

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

• libosmscout/include/osmscout/FeatureReader.h