PartitionCache< Type > Class Template Reference

Cache (with potential synchronization) of a Partition. More...

#include <Storage.hpp>

Public Member Functions
	PartitionCache (Partition< Type > &ref, size_t nbItemsCache, system::ISynchronizer *synchro=0)
	PartitionCache (const PartitionCache< Type > &p)
	~PartitionCache ()
size_t	size () const
collections::impl::CollectionCache< Type > &	operator[] (size_t idx)
void	flush ()
void	remove ()

Detailed Description

template<typename Type>
class gatb::core::tools::storage::impl::PartitionCache< Type >

Cache (with potential synchronization) of a Partition.

This class implements a cache for a Partition instance: -> an 'insert' is first cached in memory; when the cache is full, all the items are inserted in the real partition -> flushing the cache in the real partition is protected with a synchronizer

A typical use case is to create several PartitionCache referring the same Partition, and use them independently in different threads => in each thread, we will work on the local (cached) partition like a normal partition (ie. use 'insert'), but without taking care to the concurrent accesses to the referred partition (it is checked by the PartitionCache class).

Constructor & Destructor Documentation

PartitionCache	(	Partition< Type > &	ref,
		size_t	nbItemsCache,
		system::ISynchronizer *	synchro = 0
	)

Constructor

PartitionCache

(

const PartitionCache< Type > &

p

)

Copy constructor.

~PartitionCache

(

)

Destructor.

Member Function Documentation

void flush

(

)

Flush the whole partition (ie flush each collection).

collections::impl::CollectionCache<Type>& operator[]

(

size_t

idx

)

Get the ith collection

Parameters

[in]

idx

: index of the collection to be retrieved

Returns

the wanted collection.

void remove

(

)

Remove physically the partition (ie. remove each collection).

size_t size

(

)

const

Return the number of collections for this partition.

Returns

the number of collections.

---

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

• /builds/workspace/publish-doc-api-gitlab/gatb-core/src/gatb/tools/storage/impl/Storage.hpp