Question

I have a caching bean that I use to look up/store information about objects in an app. I want to do as few fetching of Views as possible as I would imagine each Database.getView comes at some cost.

What is the least expensive way to trigger “View has been recycled”?

Answer 1

After inspiration from Sven Hasselbach, I created this method:

/*
Classes that need to be imported:
import java.lang.reflect.Method;
import lotus.domino.Base;
import lotus.domino.local.NotesBase;
*/

public static boolean isRecycled( Base object ) {
    boolean isRecycled = true;
    if( ! ( object instanceof NotesBase ) ) { 
        // No reason to test non-NotesBase objects -> isRecycled = true
        return isRecycled;
    }

    try {
        NotesBase notesObject = (NotesBase) object;
        Method isDead = notesObject.getClass().getSuperclass().getDeclaredMethod( "isDead" );
        isDead.setAccessible( true );       

        isRecycled = (Boolean) isDead.invoke( notesObject );
    } catch ( Throwable exception ) {
        // Exception handling
    }

    return isRecycled;
}

Update: It seems using this method requires changes to java.policy. Specifically this line: notesObject.getClass().getSuperclass().getDeclaredMethod( “isDead” )