org.omegahat.Environment.Interpreter
Interface DynamicFieldAccessInt

All Known Implementing Classes:

ObjectDatabase, AbstractUserClass, NamingService, FieldAccessibleInterfaceRepository

public interface DynamicFieldAccessInt

This is a very special interface the mereley flags the interpreter to pass field access expressions directly to a specific routine in the implementing class. This is of particular relevance in UserClass objects have "fields" but which are not actually Java fields. They are interpreted fields. And so we have to treat them specially. Rather than simply looking to see if the class extends AbstractUserClass , we make this more general so that other classes can play by providing an explicit interface.

This interface provides a mechanism by which objects can reflect a named "field" in whatever way they chose, but the user can access fields in a consistent manner. The particular motivation is to allow expressions of the form a.b.c refer to pseudo-fields b and c in their respective parents (a and b) without requiring that they be real Java files. This mechanism is used in the evaluation of FieldAccess to evaluate expression such as those above.

Method Summary

java.lang.Object	getDynamicField(java.lang.String name)
java.lang.Object	setDynamicField(java.lang.String name, java.lang.Object value)

Method Detail

getDynamicField

public java.lang.Object getDynamicField(java.lang.String name)
                                 throws java.lang.Throwable

setDynamicField

public java.lang.Object setDynamicField(java.lang.String name,
                                        java.lang.Object value)
                                 throws java.lang.Throwable