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POJO Cache preserves the inheritance hierarchy of all attached objects.
For example, if a
Student
extends
Person
with an additional field
year
,
then once
Student
is put into the cache, all the class
attributes of
Person
are mapped to the cache as well.
Following is a code snippet that illustrates how the inheritance behavior of a POJO is maintained. Again, no special configuration is needed.
import org.jboss.test.cache.test.standAloneAop.Student; Student joe = new Student(); // Student extends Person class joe.setName("Joe Black"); // This is base class attributes joe.setAge(22); // This is also base class attributes joe.setYear("Senior"); // This is Student class attribute cache.attach("pojo/student/joe", joe); //... joe = (Student)cache.attach("pojo/student/joe"); Person person = (Person)joe; // it will be correct here joe.setYear("Junior"); // will be intercepted by the cache joe.setName("Joe Black II"); // also intercepted by the cache