Akonadi::CachePolicy

Akonadi::CachePolicy Class Reference

#include <cachepolicy.h>

Public Member Functions

 CachePolicy ()
 
 CachePolicy (const CachePolicy &other)
 
 ~CachePolicy ()
 
int cacheTimeout () const
 
bool inheritFromParent () const
 
int intervalCheckTime () const
 
QStringList localParts () const
 
CachePolicyoperator= (const CachePolicy &other)
 
bool operator== (const CachePolicy &other) const
 
void setCacheTimeout (int timeout)
 
void setInheritFromParent (bool inherit)
 
void setIntervalCheckTime (int time)
 
void setLocalParts (const QStringList &parts)
 
void setSyncOnDemand (bool enable)
 
bool syncOnDemand () const
 

Detailed Description

Represents the caching policy for a collection.

There is one cache policy per collection. It can either specify that all properties of the policy of the parent collection will be inherited (the default) or specify the following values:

  • The item parts that should be permanently kept locally and are downloaded during a collection sync (e.g. full mail vs. just the headers).
  • A minimum time for which non-permanently cached item parts have to be kept (0 - infinity).
  • Whether or not a collection sync is triggered on demand, i.e. as soon as it is accessed by a client.
  • An optional time interval for regular collection sync (aka interval mail check).

Syncing means fetching updates from the Akonadi database. The cache policy does not affect updates of the Akonadi database from the backend, since backend updates will normally immediately trigger the resource to update the Akonadi database.

The cache policy applies only to reading from the collection. Writing to the collection is independent of cache policy - all updates are written to the backend as soon as the resource can schedule this.

policy.setCacheTimeout( 30 );
policy.setIntervalCheckTime( 20 );
Akonadi::Collection collection = ...
collection.setCachePolicy( policy );
Todo:

Do we also need a size limit for the cache as well?

on a POP3 account, is should not be possible to change locally cached parts, find a solution for that

Author
Volker Krause vkrau[email protected][email protected][email protected]de.or[email protected]g

Definition at line 59 of file cachepolicy.h.

Constructor & Destructor Documentation

CachePolicy::CachePolicy ( )

Creates an empty cache policy.

Definition at line 25 of file cachepolicy.cpp.

CachePolicy::CachePolicy ( const CachePolicy other)

Creates a cache policy from an other cache policy.

Definition at line 31 of file cachepolicy.cpp.

CachePolicy::~CachePolicy ( )

Destroys the cache policy.

Definition at line 36 of file cachepolicy.cpp.

Member Function Documentation

int CachePolicy::cacheTimeout ( ) const

Returns the cache timeout for non-permanently cached parts in minutes; -1 means indefinitely.

Definition at line 77 of file cachepolicy.cpp.

bool CachePolicy::inheritFromParent ( ) const

Returns whether it inherits cache policy from the parent collection.

Definition at line 57 of file cachepolicy.cpp.

int CachePolicy::intervalCheckTime ( ) const

Returns the interval check time in minutes, -1 for never.

Definition at line 87 of file cachepolicy.cpp.

QStringList CachePolicy::localParts ( ) const

Returns the parts to permanently cache locally.

Definition at line 67 of file cachepolicy.cpp.

CachePolicy & CachePolicy::operator= ( const CachePolicy other)

.

Parameters
otherother cache policy

Definition at line 40 of file cachepolicy.cpp.

bool Akonadi::CachePolicy::operator== ( const CachePolicy other) const
Parameters
otherother cache policy

Definition at line 46 of file cachepolicy.cpp.

void CachePolicy::setCacheTimeout ( int  timeout)

Sets cache timeout for non-permanently cached parts.

Parameters
timeoutTimeout in minutes, -1 for indefinitely.

Definition at line 82 of file cachepolicy.cpp.

void CachePolicy::setInheritFromParent ( bool  inherit)

Sets whether the cache policy should be inherited from the parent collection.

Definition at line 62 of file cachepolicy.cpp.

void CachePolicy::setIntervalCheckTime ( int  time)

Sets interval check time.

Parameters
timeCheck time interval in minutes, -1 for never.

Definition at line 92 of file cachepolicy.cpp.

void CachePolicy::setLocalParts ( const QStringList parts)

Specifies the parts to permanently cache locally.

Definition at line 72 of file cachepolicy.cpp.

void CachePolicy::setSyncOnDemand ( bool  enable)

Sets whether the collection shall be synced automatically when necessary, i.e.

as soon as it is accessed by a client.

Parameters
enableIf true the collection is synced.

Definition at line 102 of file cachepolicy.cpp.

bool CachePolicy::syncOnDemand ( ) const

Returns whether the collection will be synced automatically when necessary, i.e.

as soon as it is accessed by a client.

Definition at line 97 of file cachepolicy.cpp.


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