[COCOON-1169] issue with javaflow continuations

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.1.5
• Component/s: Blocks: Java Flow
• Environment: Operating System: All; Platform: All
• Bugzilla Id: 29308
• Assignee: Unassigned
• Reporter: tester
• Created: 31/May/04 12:36
• Updated: 16/Feb/11 13:54
• Resolved: 25/Oct/05 07:58

Description

hi,

i rewrote SimpleFlow.java testcase to try out returning of objects in java
continuations like below (attached). I am getting a exception when i execute the
test case :

java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at
org.apache.cocoon.components.flow.java.test.FlowTest.testSimple(FlowTest.java:117)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at com.intellij.rt.execution.junit2.JUnitStarter.main(Unknown Source)
Caused by: java.lang.IllegalAccessError: tried to access class
org.apache.cocoon.components.flow.java.test.FooInner from class
org.apache.cocoon.components.flow.java.test.SimpleFlow
at org.apache.cocoon.components.flow.java.test.SimpleFlow.foo(SimpleFlow.java:42)
at org.apache.cocoon.components.flow.java.test.SimpleFlow.run(SimpleFlow.java:46)
... 23 more






package org.apache.cocoon.components.flow.java.test;

import org.apache.cocoon.components.flow.java.*;
import org.apache.cocoon.forms.FormContext;
import java.util.Locale;
class FooInner {
    public FooInner(int i, int j) {

    }
}

public class SimpleFlow extends AbstractSimpleFlow {

    public SimpleFlow() {
        if (Continuation.currentContinuation() != null)
            throw new RuntimeException("Conitnuation should not exist");
        //sendPageAndWait("should not stop");
    }
    public FooInner foo() {
        float a = 1;
        sendPageAndWait("getNumberA");
        System.out.println("old a=" + a);
        a = Float.parseFloat(getRequest().getParameter("a"));
        System.out.println("a=" + a);
        sendPage("result", new VarMap().add("result", a + 1));
        System.out.println("end of flow");
        return new FooInner(12,12);
    }
    public boolean run() {
        System.out.println("start of flow");
        Object res = foo();
        System.out.println("Result of foo is " + res);
        return true;
    }

    public void testNew(Locale locale) {
        FormContext formContext = new FormContext(getRequest(), locale);
    }

    public void testCatch() {
        try {
            sendPageAndWait("getNumberA");
            float a = Float.parseFloat(getRequest().getParameter("a"));
        } catch (NumberFormatException nfe) {
            sendPageAndWait("error");
        }
        sendPage("result");
    }

    public void testFinally() {
        try {
            sendPageAndWait("getNumberA");
            float a = Float.parseFloat(getRequest().getParameter("a"));
        } finally {
            sendPageAndWait("result");
        }
    }

    public void testEmpty() {
        //nothing
    }

    public void testAbstract() {
        super.parent();
    }

    public void testDelegate() {
        CalculatorFlow flow = new CalculatorFlow();
        flow.run();
    }
}



I checked the sourcecode generated out of the continuationclassloader and it
seems to be ok. not sure why it is giving this error. The sourcecode (decompiled
using jad tool) says

        System.out.println("end of flow");
        12;
        continuationstack.pushInt(12);
        continuationstack;
        JVM INSTR swap ;
        pushInt();
        return new FooInner(continuationstack.popInt(), continuationstack.popInt());