osmscout::IndexedDataFile< I, N > Class Template Reference

Extension of DataFile to allow loading data not only by offset but by id using an additional index file, mapping objects id to object file offset. More...

#include <DataFile.h>

Inheritance diagram for osmscout::IndexedDataFile< I, N >:

Public Types
using	ValueType = std::shared_ptr< N >
Public Types inherited from osmscout::DataFile< N >
using	ValueCache = Cache< FileOffset, std::shared_ptr< N > >
using	ValueCacheEntry = typename Cache< FileOffset, ValueType >::CacheEntry
using	ValueCacheRef = typename Cache< FileOffset, ValueType >::CacheRef
using	ValueType = std::shared_ptr< N >

Public Member Functions
bool	Close () override
	Close the index.
bool	Get (const std::list< I > &ids, std::vector< ValueType > &data) const
bool	Get (const std::set< I > &ids, std::unordered_map< I, ValueType > &data) const
bool	Get (const std::set< I > &ids, std::vector< ValueType > &data) const
bool	Get (const std::vector< I > &ids, std::vector< ValueType > &data) const
bool	Get (I id, ValueType &entry) const
bool	GetOffset (I id, FileOffset &offset) const
template<typename IteratorIn >
bool	GetOffsets (IteratorIn begin, IteratorIn end, size_t size, std::vector< FileOffset > &offsets) const
	IndexedDataFile (const std::string &datafile, const std::string &indexfile, size_t indexCacheSize, size_t dataCacheSize)
bool	IsOpen () const override
	Return true, if index is currently opened.
bool	Open (const TypeConfigRef &typeConfig, const std::string &path, bool memoryMappedIndex, bool memoryMappedData)
Public Member Functions inherited from osmscout::DataFile< N >
	DataFile (const DataFile &)=delete
	DataFile (const std::string &datafile, size_t cacheSize)
	DataFile (DataFile &&)=delete
void	FlushCache ()
bool	GetByBlockSpan (const DataBlockSpan &span, std::vector< ValueType > &data) const
	Read data values from the given DataBlockSpan.
template<typename IteratorIn >
bool	GetByBlockSpans (IteratorIn begin, IteratorIn end, std::vector< ValueType > &data) const
	Read data values from the given DataBlockSpans.
bool	GetByOffset (FileOffset offset, ValueType &entry) const
	Read one data value from the given file offset.
template<typename IteratorIn >
bool	GetByOffset (IteratorIn begin, IteratorIn end, size_t size, const GeoBox &boundingBox, std::vector< ValueType > &data) const
	Read data values from the given file offsets.
template<typename IteratorIn >
bool	GetByOffset (IteratorIn begin, IteratorIn end, size_t size, std::unordered_map< FileOffset, ValueType > &dataMap) const
	Read data values from the given file offsets.
template<typename IteratorIn >
bool	GetByOffset (IteratorIn begin, IteratorIn end, size_t size, std::vector< ValueType > &data) const
	Reads data for the given file offsets.
std::string	GetFilename () const
bool	Open (const TypeConfigRef &typeConfig, const std::string &path, bool memoryMappedData)
	Open the index file.
DataFile &	operator= (const DataFile &)=delete
DataFile &	operator= (DataFile &&)=delete
virtual	~DataFile ()

Additional Inherited Members
Protected Attributes inherited from osmscout::DataFile< N >
TypeConfigRef	typeConfig

Detailed Description

template<class I, class N>
class osmscout::IndexedDataFile< I, N >

Extension of DataFile to allow loading data not only by offset but by id using an additional index file, mapping objects id to object file offset.

Member Typedef Documentation

ValueType

template<class I , class N >

using osmscout::IndexedDataFile< I, N >::ValueType = std::shared_ptr<N>

Constructor & Destructor Documentation

IndexedDataFile()

template<class I , class N >

osmscout::IndexedDataFile< I, N >::IndexedDataFile	(	const std::string &	datafile,
		const std::string &	indexfile,
		size_t	indexCacheSize,
		size_t	dataCacheSize
	)

Member Function Documentation

Close()

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::Close ( )

overridevirtual

Close the index.

Method is NOT thread-safe.

Reimplemented from osmscout::DataFile< N >.

Get() [1/5]

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::Get	(	const std::list< I > &	ids,
		std::vector< ValueType > &	data
	)		const

References osmscout::DataFile< N >::GetByOffset().

Get() [2/5]

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::Get	(	const std::set< I > &	ids,
		std::unordered_map< I, ValueType > &	data
	)		const

Get() [3/5]

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::Get	(	const std::set< I > &	ids,
		std::vector< ValueType > &	data
	)		const

References osmscout::DataFile< N >::GetByOffset().

Get() [4/5]

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::Get	(	const std::vector< I > &	ids,
		std::vector< ValueType > &	data
	)		const

References osmscout::DataFile< N >::GetByOffset().

Get() [5/5]

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::Get	(	I	id,
		ValueType &	entry
	)		const

References osmscout::DataFile< N >::GetByOffset().

GetOffset()

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::GetOffset	(	I	id,
		FileOffset &	offset
	)		const

GetOffsets()

template<class I , class N >

template<typename IteratorIn >

bool osmscout::IndexedDataFile< I, N >::GetOffsets	(	IteratorIn	begin,
		IteratorIn	end,
		size_t	size,
		std::vector< FileOffset > &	offsets
	)		const

IsOpen()

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::IsOpen ( ) const

overridevirtual

Return true, if index is currently opened.

Method is NOT thread-safe.

Reimplemented from osmscout::DataFile< N >.

References osmscout::DataFile< N >::IsOpen().

Open()

template<class I , class N >

bool osmscout::IndexedDataFile< I, N >::Open	(	const TypeConfigRef &	typeConfig,
		const std::string &	path,
		bool	memoryMappedIndex,
		bool	memoryMappedData
	)

References osmscout::DataFile< N >::Open().

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

• DataFile.h