QueryCache Class Reference

#include <QueryCache.h>

Collaboration diagram for QueryCache:

Public Member Functions
std::shared_ptr< const CacheEntry::CacheIndex >	getBestCache (const std::shared_ptr< joda::query::Predicate > &pred)
std::shared_ptr< const CacheEntry::CacheIndex >	getBestCache (const std::unique_ptr< joda::query::Predicate > &pred)
std::shared_ptr< const CacheEntry::CacheIndex >	getBestCache (const std::string &predStr)
bool	cacheAvailable (const std::shared_ptr< joda::query::Predicate > &pred)
bool	cacheAvailable (const std::string &predStr)
void	addQueryResult (std::unique_ptr< CacheEntry > &&ce)
void	addQueryResult (std::shared_ptr< const CacheEntry::CacheIndex > docs, const std::shared_ptr< joda::query::Predicate > &predicate)
void	reset ()

Protected Attributes
std::unordered_map< std::string, std::unique_ptr< CacheEntry > >	queryMap

Detailed Description

This class is responsible for managing a cache for previously exectuted queries.

Member Function Documentation

addQueryResult() [1/2]

void QueryCache::addQueryResult	(	std::shared_ptr< const CacheEntry::CacheIndex >	docs,
		const std::shared_ptr< joda::query::Predicate > &	predicate
	)

Creates and adds an CacheEntry to the QueryCache

Parameters

docs	The set of DOC_IDs to add to the CacheEntry
predicate	The predicate that produced docs

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addQueryResult() [2/2]

void QueryCache::addQueryResult

(

std::unique_ptr< CacheEntry > &&

ce

)

Adds an already created CacheEntry

Parameters

ce	CacheEntry to insert to the QueryCache

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cacheAvailable() [1/2]

bool QueryCache::cacheAvailable

(

const std::shared_ptr< joda::query::Predicate > &

pred

)

Checks if the given predicate is stored in the cache

Parameters

pred	Predicate to check for

Returns

True if a cache exists; False else

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cacheAvailable() [2/2]

bool QueryCache::cacheAvailable

(

const std::string &

predStr

)

Checks if the given predicate is stored in the cache

Parameters

predStr

Predicate to check for

Returns

True if a cache exists; False else

getBestCache() [1/3]

std::shared_ptr< const CacheEntry::CacheIndex > QueryCache::getBestCache

(

const std::shared_ptr< joda::query::Predicate > &

pred

)

Returns the cached DOC_IDs for the given predicate

Parameters

pred	The predicated in internal representation

Returns

A set of DOC_IDs stored by a previous query execution

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getBestCache() [2/3]

std::shared_ptr< const CacheEntry::CacheIndex > QueryCache::getBestCache

(

const std::string &

predStr

)

Returns the cached DOC_IDs for the given predicate

Parameters

predStr

The predicated in string representation

Returns

A set of DOC_IDs stored by a previous query execution

getBestCache() [3/3]

std::shared_ptr< const CacheEntry::CacheIndex > QueryCache::getBestCache

(

const std::unique_ptr< joda::query::Predicate > &

pred

)

Returns the cached DOC_IDs for the given predicate

Parameters

pred	The predicated in internal representation

Returns

A set of DOC_IDs stored by a previous query execution

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reset()

void QueryCache::reset

(

)

Resets the QueryCache and removes all CacheEntries

Field Documentation

queryMap

std::unordered_map<std::string, std::unique_ptr<CacheEntry> > QueryCache::queryMap

protected

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

• /home/nico/joda_tmp/tmp-joda-dirs/JODA-gh/libs/joda/core/modules/indexing/include/joda/indexing/QueryCache.h
• /home/nico/joda_tmp/tmp-joda-dirs/JODA-gh/libs/joda/core/modules/indexing/src/cache/QueryCache.cpp