JSAdapter

Class Overview

JSAdapter is java.lang.reflect.Proxy equivalent for JavaScript. JSAdapter calls specially named JavaScript methods on an adaptee object when property access is attempted on it. Example: var y = { __get__ : function (name) { ... } __has__ : function (name) { ... } __put__ : function (name, value) {...} __delete__ : function (name) { ... } __getIds__ : function () { ... } }; var x = new JSAdapter(y); x.i; // calls y.__get__ i in x; // calls y.__has__ x.p = 10; // calls y.__put__ delete x.p; // calls y.__delete__ for (i in x) { print(i); } // calls y.__getIds__ If a special JavaScript method is not found in the adaptee, then JSAdapter forwards the property access to the adaptee itself. JavaScript caller of adapter object is isolated from the fact that the property access/mutation/deletion are really calls to JavaScript methods on adaptee. Use cases include 'smart' properties, property access tracing/debugging, encaptulation with easy client access - in short JavaScript becomes more "Self" like. Note that Rhino already supports special properties like __proto__ (to set, get prototype), __parent__ (to set, get parent scope). We follow the same double underscore nameing convention here. Similarly the name JSAdapter is derived from JavaAdapter -- which is a facility to extend, implement Java classes/interfaces by JavaScript.

Summary

[Expand] Inherited Fields
From interface sun.org.mozilla.javascript.internal.Scriptable public static final Object NOT_FOUND

[Expand] Inherited Methods
From class java.lang.Object Object clone() Creates and returns a copy of this object. boolean equals(Object obj) Indicates whether some other object is "equal to" this one. void finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. final Class<?> getClass() Returns the runtime class of this Object. int hashCode() Returns a hash code value for the object. final void notify() Wakes up a single thread that is waiting on this object's monitor. final void notifyAll() Wakes up all threads that are waiting on this object's monitor. String toString() Returns a string representation of the object. final void wait() Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object. final void wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed. final void wait(long timeout) Causes the current thread to wait until either another thread invokes the notify() method or the notifyAll() method for this object, or a specified amount of time has elapsed.
From interface sun.org.mozilla.javascript.internal.Callable abstract Object call(Context arg0, Scriptable arg1, Scriptable arg2, Object[] arg3)
From interface sun.org.mozilla.javascript.internal.Function abstract Object call(Context arg0, Scriptable arg1, Scriptable arg2, Object[] arg3) abstract Scriptable construct(Context arg0, Scriptable arg1, Object[] arg2)
From interface sun.org.mozilla.javascript.internal.Scriptable abstract void delete(int arg0) abstract void delete(String arg0) abstract Object get(String arg0, Scriptable arg1) abstract Object get(int arg0, Scriptable arg1) abstract String getClassName() abstract Object getDefaultValue(Class arg0) abstract Object[] getIds() abstract Scriptable getParentScope() abstract Scriptable getPrototype() abstract boolean has(String arg0, Scriptable arg1) abstract boolean has(int arg0, Scriptable arg1) abstract boolean hasInstance(Scriptable arg0) abstract void put(String arg0, Scriptable arg1, Object arg2) abstract void put(int arg0, Scriptable arg1, Object arg2) abstract void setParentScope(Scriptable arg0) abstract void setPrototype(Scriptable arg0)