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Chapter 5. Adapter Class Reference
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FJ-JAVA-BASE class
The FJ-JAVA-BASE class is the super class of every adapter class.
The FJ-JAVA-BASE class has the methods shown below.
Method name
Type
Function
J-NARROW
Factory
Assigns an object to a subclass.
J-DUPLICATE
Object
Duplicates an adapter object.
J-EQUALS
Object
Checks whether the Java objects indicated by two adapter
objects are equal.
J-NARROW Method (factory method)
Explanation
This method assigns an adapter object to a subclass.
Syntax
INVOKE class-name "J-NARROW" USING object-1 RETURNING object-2
Parameter and return value
class-name:
Specifies the class name of assignment target data.
•
object-1 (attribute: OBJECT REFERENCE FJ-JAVA-BASE)
Specifies the object to be assigned.
•
object-2 (attribute: OBJECT REFERENCE SELF)
Returns the object that was converted into the assignment target class.
J-DUPLICATE Method (object method)
Explanation
This method duplicates an adapter object. It duplicates no Java object. A duplicated
adapter object points to the same Java object as the original adapter object.
Syntax
INVOKE anObject "J-DUPLICATE" RETURNING duplicatedObject
Parameter and return value
•
anObject (attribute: OBJECT REFERENCE adapter class)
Specifies the adapter object to be duplicated.
•
duplicatedObject (attribute: OBJECT REFERENCE CLASS OF SELF)
Returns the duplicated object.