Interface cornell.slk.jkernel.core.Resolver

Implementing Classes:

GenCodeResolver, SystemResolver, CompoundResolver, TableResolver, FilterResolver, URLResolver, FileResolver

public interface Resolver

extends Remote

Method Summary
java.lang.Object	resolveClassName(java.lang.String name) resolveClassName decides what class should be used for a particular class name.

 

Method Detail

resolveClassName

public java.lang.Object resolveClassName(java.lang.String name) throws RemoteException

resolveClassName decides what class should be used for a particular class name. Given a name (which must be a fully qualified class name), resolveClassName must do one of the following three things:

• To create a new class based on bytecode, resolveClassName should return a byte array that contains the bytecode for the class.
• To use an existing shared class (which may come from another task), resolveClassName should return the SharedClass object that represents the class.
• Otherwise, the resolver should return null, indicating that it does not know what class to associate with the given class name.

If resolveClassName returns an invalid argument, then some exception (such as ClassNotFoundException) may be thrown by the virtual machine. The exact behavior hasn't been specified yet.

A task has a resolver or list of resolvers that it uses to resolve class names. A task will never query its resolver(s) with the same class name twice. Therefore, a resolver object that handles requests for a single task does not need to keep a table caching the answers that it gave. It is possible, by using cross-task communication, for a resolver to handle requests for more than one task. In this case, the resolver may cache information if it desires (for performace reasons), although it is generally not necessary.