SingletonBean.java

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package com.acme;

import javax.ejb.*;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;

import java.util.concurrent.TimeUnit;

import javax.annotation.*;

@Startup
@Singleton
@LocalBean
public class SingletonBean implements RemoteSingleton {


    @EJB 
    private StatefulBean sf;

    @Resource
    private SessionContext ctx;

    @EJB
    private SingletonBean me;

    private boolean gotTimeout;

    @PostConstruct
    private void init() {
	System.out.println("In SingletonBean::init()");

	// Call a method marked as async in .xml.  This would block
	// if it's not correctly identified as an async method since
	// we're not out of PostConstruct yet.
	me.foo();

	SingletonBean2 sb2 = (SingletonBean2) 
	    ctx.lookup("java:module/SingletonBean2");

	// Call read-lock async method and have it sleep for a little
	// while
	sb2.fooAsync(10);

	// Sleep for a short time to allow enough time for fooAsync() to
	// block
	try {
	    Thread.sleep(1000);
	} catch(Exception e) {
	    e.printStackTrace();
	}

	// Call a sychronous write-lock method with a .xml specified
	// timeout that's less than the fooAsync sleep time
	try {
	    sb2.foo();
	    throw new EJBException("Should have gotten timeout exception");
	} catch(ConcurrentAccessTimeoutException cate) {
	    System.out.println("Got expected timeout exception");
	}

	RemoteSingleton lookup1 = (RemoteSingleton)
	    ctx.lookup("java:comp/env/ejb/lookup1");
	System.out.println("lookup1 = " + lookup1);

	SingletonBean2 lookup2 = (SingletonBean2)
	    ctx.lookup("java:comp/env/ejb/lookup2");
	System.out.println("lookup2 = " + lookup2);

	// Now call a synchronous read-lock method.  This should just
	// proceed.
	sb2.foo2();

	sf.foo();

	System.out.println("Leaving SingletonBean::init()");
    }

    @AccessTimeout(value=10, unit=TimeUnit.DAYS)
    public void foo() {
	System.out.println("In SingletonBean::foo()");
    }

    @PreDestroy
    private void destroy() {
	System.out.println("In SingletonBean::destroy()");
    }

    @Schedule(second="1", minute="*", hour="*", persistent=false)
    private void mytimeout(Timer t) {
	System.out.println("In SingletonBean::mytimeout, info = " + t.getInfo() + "t = " + 
			   t.getSchedule());	

	try {
	    t.getHandle();
	    System.out.println("Successfully got handle for persistent timer");
	} catch(IllegalStateException e) {
	    throw new EJBException(e);
	}

	if( t.getInfo().equals("info") && t.isPersistent() && t.isCalendarTimer() ) {
	    gotTimeout = true;
	} else {
	    throw new EJBException("Timer metadata doesn't match descriptor " + t);
	}
    }

    private void mytimeout2() {
	System.out.println("In SingletonBean::mytimeout");
    }

    private void mytimeout1(Timer t) {
	System.out.println("In SingletonBean::mytimeout1");
    }

    public boolean getTestResult() {
	System.out.println("In SingletonBean::testPassed");
	return gotTimeout;
    }
}