I continued to drill down on this issue. From reading of the BSF source code, I
found that the "bsf" object that was put into the javascript global context is
actually a object of BSFFunctions object which only contains a subset of
BSFManager methods. The BSFFunctions doesn't have a getObjectRegistry method.
This explains the reason of the exception I ran into.
Now my question is
(1) Why BSFFunctions doesn't support the getObjectRegistry method?
(2) How can I retrieve the bean objects from the ObjectRegiestry inside the
script code?
Thanks
Linda
Daling Xu <[EMAIL PROTECTED]> wrote:
Hi Rony,
I think I am following the steps you described, here is my code:
final String BEAN_ANME = "myBeanName";
BSFManager manager = new BSFManager();
ObjectRegistry objReg = new ObjectRegistry( manager.getObjectRegistry() );
objReg.register(BEAN_NAME , new MyBeanClass("my String by objReg"));
manager.setObjectRegistry( objReg );
manager.exec("javascript", "test", 0, 0, "bsf.getObjectRegistry().lookup(\"" +
BEAN_NAME +"\")"+ ".myMethod();" ); //try case 1
//manager.exec("javascript", "test", 0, 0, "bsf.lookupBean(\"" + BEAN_NAME
+"\")"+ ".myMethod();" ); //try case 2
//manager.exec("javascript", "test", 0, 0, BEAN_NAME + ".myMethod();" ); //try
case 3
None of the three tries worked.
For the try case 1, I got this error:
TypeError: Cannot find function getObjectRegistry. although I can directly call
Although I can run the following code successfully in my java code:
Object obj = manager.getObjectRegistry().lookup( BEAN_NAME );
((MyBeanClass)obj).myMethod();
For the case 2, I got a java.lang.ClassCastException, here is part of my
printstacktrace:
at org.apache.bsf.BSFManager.lookupBean(BSFManager.java:736)
at org.apache.bsf.util.BSFFunctions.lookupBean(BSFFunctions.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
For the case 3, I know conceptly it not the right way to do, just use it to
confirm my understanding. As expected, it gave me exception of "myBeanName" is
not defined.
Conceptually, I think the case 1 here is the right way to do it, but why it
didn't work?
Thanks
Linda
"Rony G. Flatscher" wrote:
bm=new org.apache.bsf.BSFManager();
// ... do whatever you need to do (setup, invoking scripsts, maybe
nothing, whatever)
or=new org.apache.bsf.ObjectRegistry();
// or if you want to use bm's ObjectRegistry object as a parent:
or=new org.apache.bsf.ObjectRegistry(bm.getObjectRegistry());
// do whatever you need to do with "or" (registering objects for the
scripts)....
bm.setObjectRegistry(or); // now set "bm" to the new
ObjectRegistry object "or"
// continue to invoke scripts
HTH,
---rony
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