public abstract class AbstractRequestAttributesScope extends java.lang.Object implements Scope
Scopeimplementation that reads from a particular scope in the current thread-bound
Subclasses may wish to override the
get(java.lang.String, org.springframework.beans.factory.ObjectFactory<?>) and
methods to add synchronization around the call back into this super class.
|Constructor and Description|
|Modifier and Type||Method and Description|
Return the object with the given name from the underlying scope,
Template method that determines the actual target scope.
Register a callback to be executed on destruction of the specified object in the scope (or at destruction of the entire scope, if the scope does not destroy individual objects but rather only terminates in its entirety).
Remove the object with the given
Resolve the contextual object for the given key, if any.
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public java.lang.Object get(java.lang.String name, ObjectFactory<?> objectFactory)
creating itif not found in the underlying storage mechanism.
This is the central operation of a Scope, and the only operation that is absolutely required.
@Nullable public java.lang.Object remove(java.lang.String name)
namefrom the underlying scope.
null if no object was found; otherwise
returns the removed
Note that an implementation should also remove a registered destruction callback for the specified object, if any. It does, however, not need to execute a registered destruction callback in this case, since the object will be destroyed by the caller (if appropriate).
Note: This is an optional operation. Implementations may throw
UnsupportedOperationException if they do not support explicitly
removing an object.
name- the name of the object to remove
nullif no object was present
public void registerDestructionCallback(java.lang.String name, java.lang.Runnable callback)
Note: This is an optional operation. This method will only be called for scoped beans with actual destruction configuration (DisposableBean, destroy-method, DestructionAwareBeanPostProcessor). Implementations should do their best to execute a given callback at the appropriate time. If such a callback is not supported by the underlying runtime environment at all, the callback must be ignored and a corresponding warning should be logged.
Note that 'destruction' refers to automatic destruction of
the object as part of the scope's own lifecycle, not to the individual
scoped object having been explicitly removed by the application.
If a scoped object gets removed via this facade's
method, any registered destruction callback should be removed as well,
assuming that the removed object will be reused or manually destroyed.
name- the name of the object to execute the destruction callback for
callback- the destruction callback to be executed. Note that the passed-in Runnable will never throw an exception, so it can safely be executed without an enclosing try-catch block. Furthermore, the Runnable will usually be serializable, provided that its target object is serializable as well.
@Nullable public java.lang.Object resolveContextualObject(java.lang.String key)