DependentCachedValue<CacheContentType, DependencyType> class
A CachedValue that its validity is defined by a dependency. It holds the last result of the computation callback since the last change on the result of the dependency callback.
This cache will be considered invalid if the overall returned value of the dependency callback changes since the last refresh.
Besides dependency change, this cache can also be manually updated on marked as invalid via refresh and invalidate.
The dependency callback is called in every value access. So it is recommended to keep the dependency callback as declarative as possible.
It can be created via CachedValue.withDependency
- Inheritance
-
- Object
- SingleChildCachedValue<
CacheContentType> - DependentCachedValue
- Available Extensions
Properties
-
child
→ CachedValue<
CacheContentType> -
A CachedValue in which this cache wraps.
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- isValid → bool
-
Check the current state of the cache.
no setteroverride
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value → CacheContentType
-
Access the current cache value.
no setteroverride
Methods
-
invalidate(
) → void -
Marks the cache as invalid.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
refresh(
) → CacheContentType -
Calls refresh on its child and updates the local cache of dependency.
override
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited