jdk.nashorn.internal classes are ... "internal" implementation classes.
In fact, if you are running with security manager enabled, you'll get
access exception when attempting to access classes from
jdk.nashorn.internal.* packages.
For the specific problem you've - namely to expose your own script
functions from java code, there are two solutions:
*) Implement any @FunctionalInterface interface in JDK (or your own
@FunctionalInterface) and pass/put object of the same in a
javax.script.Bindings or even global scope. Script can access these as
though these are functions.
*) Implement jdk.nashorn.api.scripting.JSObject in your class and
implement "call" method on it. Again, nashorn's flexible dynalink based
linker will treat your JSObject impl. as though it is a function. This
can also be used to implement "constructor" (newObject method) in Java
code and so on.
Hope this helps,
Sundar
On Thursday 05 December 2013 11:13 AM, buddhi mihara wrote:
hi, i need to add a script function like NativeBoolean written in nashorn
jdk.nashorn.internal.objects; package , to javascript context.let say my
function is ContextifyImpl.it work just fine when i added that ContextifyImpl
class to jdk.nashorn.internal.objects package.i configure nasgen tool to
generate $Constructor and $Prototype and when i added my ContextifyImpl class
to my own package let say jdk.nashorn.internal.Dilan it giving me error as
follow.
Exception in thread "main" java.lang.IllegalAccessError: tried to access method
jdk.nashorn.internal.objects.ScriptFunctionImpl.<init>(Ljava/lang/String;Ljava/lang/invoke/MethodHandle;Ljdk/nashorn/internal/runtime/PropertyMap;[Ljava/lang/invoke/MethodHandle;)V
from class jdk.nashorn.internal.Dilan.ContextifyImpl$Constructor at
jdk.nashorn.internal.Dilan.ContextifyImpl$Constructor.<init>(Unknown Source) at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:414) at
java.lang.Class.newInstance(Class.java:432) at
jdk.nashorn.internal.Dilan.contextify.initConstructors(contextify.java:70) at
jdk.nashorn.internal.Dilan.contextify.makeContextImpl(contextify.java:54) at
jdk.nashorn.internal.Dilan.contextify.makeContext(contextify.java:110) at
jdk.nashorn.internal.scripts.Script$buddhi.runScript(/home/buddhi/Desktop/buddhi.js:4) at
jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:518) at
jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:204) at
jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:365) at
jdk.nashorn.tools.Shell.apply(Shell.java:373) at
jdk.nashorn.tools.Shell.runScripts(Shell.java:302) at jdk.nashorn.tools.Shell.run(Shell.java:166)
at jdk.nashorn.tools.Shell.main(Shell.java:130) at jdk.nashorn.tools.Shell.main(Shell.java:109) i
need to send a javascript function to javascript exection environment which is written inside my own
package.in my projecr consider nashorn is an dependancy.for sake of maintainability i need to place
all my code in my own package not in nashorn packages.how could i do that thank.
if u can please send me the proper way to configure javascript function using
nashorn
thanks and best regards
