gnu.expr
Class ModuleContext

java.lang.Object
  gnu.expr.ModuleContext

public class ModuleContext
extends java.lang.Object

Maps modules to module instances. Given a class, species a specific instance object for that class.

Constructor Summary

ModuleContext(ModuleManager manager)

Method Summary

java.lang.Object	checkInstance(ModuleInfo info)
ModuleInfo	findFromInstance(java.lang.Object instance)
java.lang.Object	findInstance(ModuleInfo info) If there is no instance of the argument's class, allocated one.
static ModuleContext	getContext() For now returns the shared global ModuleContext.
ModuleManager	getManager()
java.lang.Object	makeInstance(ModuleInfo info) Allocate a new instance of the class corresponding to the argument.
void	setInstance(ModuleInfo info, java.lang.Object instance)

Methods inherited from class java.lang.Object

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

Constructor Detail

ModuleContext

public ModuleContext(ModuleManager manager)

Method Detail

getContext

public static ModuleContext getContext()

For now returns the shared global ModuleContext. Later provide a means for thread-specific overriding.

getManager

public ModuleManager getManager()

checkInstance

public java.lang.Object checkInstance(ModuleInfo info)

makeInstance

public java.lang.Object makeInstance(ModuleInfo info)

Allocate a new instance of the class corresponding to the argument.

findInstance

public java.lang.Object findInstance(ModuleInfo info)

If there is no instance of the argument's class, allocated one.

setInstance

public void setInstance(ModuleInfo info,
                        java.lang.Object instance)

findFromInstance

public ModuleInfo findFromInstance(java.lang.Object instance)