| QxOrm 1.4.4 C++ Object Relational Mapping library

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Namespaces | Functions
qx::cache Namespace Reference
QxCache : QxOrm library basic thread-safe cache feature to backup and restore any kind of objects (for example, object fetched from database)

Provide basic thread-safe cache feature to backup and restore any kind of objects (for example, object fetched from database) More...

## Namespaces
namespace | detail
| Internal helper tools for qx::cache namespace.
## Functions
void | max_cost (long l)
| Set the maximum allowed total cost of the cache to l. If the current total cost is greater than l, some objects are deleted immediately.
long | max_cost ()
| Return the maximum allowed total cost of the cache.
long | current_cost ()
| Return the current cost used by the cache.
long | count ()
| Return the number of objects in the cache.
bool | is_empty ()
| Return true if the cache contains no object; otherwise return false.
void | clear ()
| Delete all the objects in the cache.
bool | exist (const QString &sKey)
| Return true if the cache contains an object associated with key sKey; otherwise return false.
bool | remove (const QString &sKey)
| Delete the object associated with key sKey. Return true if the object was found in the cache; otherwise return false.
template<typename T >
bool | set (const QString &sKey, T &t, long lCost=1, const QDateTime &dt=QDateTime())
| Insert object t into the cache with key sKey, associated cost lCost and insertion date-time dt. Any object with the same key already in the cache will be removed.
template<typename T >
T | get (const QString &sKey)
| Return the object of type T associated with key sKey, or return default instance of T() if the key does not exist in the cache.
template<typename T >
qx_bool | get (const QString &sKey, T &t, QDateTime &dt)
| Return true if object t can be fetched with associated key sKey and insertion date-time dt; otherwise return false with an error description.
template<typename T >
qx_bool | get (const QString &sKey, T &t)
| Return true if object t can be fetched with associated key sKey; otherwise return false with an error description.

## Detailed Description

Provide basic thread-safe cache feature to backup and restore any kind of objects (for example, object fetched from database)