AbstractBackend
abstract class AbstractBackend implements BackendInterface (View source)
An abstract caching backend
Constants
| DATETIME_EXPIRYTIME_UNLIMITED |
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| UNLIMITED_LIFETIME |
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Properties
| protected FrontendInterface | $cache | Reference to the cache frontend which uses this backend |
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| protected string | $cacheIdentifier | ||
| protected string | $identifierPrefix | A prefix to seperate stored by appliaction context and cache |
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| protected int | $defaultLifetime | Default lifetime of a cache entry in seconds |
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| protected EnvironmentConfiguration | $environmentConfiguration |
Methods
Constructs this backend
No description
No description
Sets the default lifetime for this cache backend
Calculates the expiry time by the given lifetime. If no lifetime is specified, the default lifetime is used.
Returns the internally used, prefixed entry identifier for the given public entry identifier.
Details
__construct(EnvironmentConfiguration $environmentConfiguration = null, array $options = [])
Constructs this backend
protected void
setProperties(array $properties, bool $throwExceptionIfPropertyNotSettable = true)
No description
protected bool
setProperty(string $propertyName, mixed $propertyValue)
No description
void
setCache(FrontendInterface $cache)
Sets a reference to the cache frontend which uses this backend
void
setDefaultLifetime(int|string $defaultLifetime)
Sets the default lifetime for this cache backend
protected DateTime
calculateExpiryTime(int $lifetime = null)
Calculates the expiry time by the given lifetime. If no lifetime is specified, the default lifetime is used.
string
getPrefixedIdentifier(string $entryIdentifier)
Returns the internally used, prefixed entry identifier for the given public entry identifier.
While Flow applications will mostly refer to the simple entry identifier, it may be necessary to know the actual identifier used by the cache backend in order to share cache entries with other applications. This method allows for retrieving it.
Note that, in case of the AbstractBackend, this method is returns just the given entry identifier.