ARTICLE
Weak References
An object in the system class
CL_ABAP_WEAK_REFERENCE represents a
weak reference to an object in a
class. Unlike regular object references
, a weak reference is ignored during execution of the
garbage collector . This means that
a weak reference does not prevent the referenced object from being
deleted when the garbage collector is executed.
A weak reference to an existing object is created by passing an object
reference to the instance constructor of CL_ABAP_WEAK_REFERENCE .
You can then use the functional method
GET to retrieve the reference afterwards. If the object was
deleted in the meantime, the return value is initial.
Note
A different type of reference retains objects until the available memory
becomes limited. The class CL_ABAP_SOFT_REFERENCE is available
for these soft references , but
this class is currently still implemented in the same way as class
CL_ABAP_WEAK_REFERENCE .
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved