Namespaces |
| namespace | qx::cache |
| | Provide basic thread-safe cache feature to backup and restore any kind of objects (for example, object fetched from database)
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| namespace | qx::cache::detail |
| | Internal helper tools for qx::cache namespace.
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Files |
| file | QxCache.h |
| | qx::cache : based on singleton pattern, provide basic thread-safe cache feature to backup and restore any kind of objects (for example, object fetched from database)
|
Functions |
| void | qx::cache::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.
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| long | qx::cache::max_cost () |
| | Return the maximum allowed total cost of the cache.
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| long | qx::cache::current_cost () |
| | Return the current cost used by the cache.
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| long | qx::cache::count () |
| | Return the number of objects in the cache.
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| bool | qx::cache::is_empty () |
| | Return true if the cache contains no object; otherwise return false.
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| void | qx::cache::clear () |
| | Delete all the objects in the cache.
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| bool | qx::cache::exist (const QString &sKey) |
| | Return true if the cache contains an object associated with key sKey; otherwise return false.
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| bool | qx::cache::remove (const QString &sKey) |
| | Delete the object associated with key sKey. Return true if the object was found in the cache; otherwise return false.
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| template<typename T > |
| bool | qx::cache::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.
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| template<typename T > |
| T | qx::cache::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.
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| template<typename T > |
| qx_bool | qx::cache::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.
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| template<typename T > |
| qx_bool | qx::cache::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.
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1.7.5.1 
