harpoon.Backend.Runtime1
Class ObjectBuilder.RootOracle

java.lang.Object
  harpoon.Backend.Runtime1.ObjectBuilder.RootOracle

All Implemented Interfaces:

Serializable

Enclosing class:

ObjectBuilder

public abstract static class ObjectBuilder.RootOracle
extends Object
implements Serializable

A RootOracle allows a transformation to add fields to java.lang.Object (or any other class, really) and provide the initial values for that field in the various runtime constant objects without having to directly extend every ObjectInfo used in this Generic.Runtime implementation. The RootOracle will be consulted for the value of every field *before* the ObjectInfo, allowing an override -- if no override is desired, the RootOracle.get() method should return NOT_A_VALUE.

See Also:

Serialized Form

Field Summary

static Object

NOT_A_VALUE This is the constant value returned which this oracle doesn't wish to override the given field.

Constructor Summary

ObjectBuilder.RootOracle()

Method Summary

abstract Object

get(HField hf, Runtime.ObjectBuilder.Info addlinfo) Returns the override value of the given field hf (more information about the object in question is provided by addlinfo); if this RootOracle doesn't wish to override this field, it should return the constant NOT_A_VALUE.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NOT_A_VALUE

public static final Object NOT_A_VALUE

This is the constant value returned which this oracle doesn't wish to override the given field.

Constructor Detail

ObjectBuilder.RootOracle

public ObjectBuilder.RootOracle()

Method Detail

get

public abstract Object get(HField hf,
                           Runtime.ObjectBuilder.Info addlinfo)

Returns the override value of the given field hf (more information about the object in question is provided by addlinfo); if this RootOracle doesn't wish to override this field, it should return the constant NOT_A_VALUE.