index-group=Unrevised type=page status=published title=Decorators
*Help us document this example! Click the blue pencil icon in the upper right to edit this page.* ## AccessDeniedException package org.superbiz.cdi.decorators; import javax.ejb.ApplicationException; /** * @version $Revision$ $Date$ */ @ApplicationException public class AccessDeniedException extends RuntimeException { public AccessDeniedException(String s) { super(s); } } ## Calculator package org.superbiz.cdi.decorators; /** * @version $Revision$ $Date$ */ public interface Calculator { public int add(int a, int b); public int subtract(int a, int b); public int multiply(int a, int b); public int divide(int a, int b); public int remainder(int a, int b); } ## CalculatorBean package org.superbiz.cdi.decorators; import javax.annotation.Resource; import javax.ejb.SessionContext; import javax.ejb.Stateless; import javax.enterprise.inject.Produces; @Stateless public class CalculatorBean implements Calculator { @Produces @Resource private SessionContext sessionContext; public int add(int a, int b) { return a + b; } public int subtract(int a, int b) { return a - b; } public int multiply(int a, int b) { return a * b; } public int divide(int a, int b) { return a / b; } public int remainder(int a, int b) { return a % b; } } ## CalculatorLogging package org.superbiz.cdi.decorators; import javax.decorator.Decorator; import javax.decorator.Delegate; import javax.inject.Inject; import java.util.logging.Logger; @Decorator public class CalculatorLogging implements Calculator { private Logger logger = Logger.getLogger("Calculator"); @Inject @Delegate private Calculator calculator; @Override public int add(int a, int b) { logger.fine(String.format("add(%s, %s)", a, b)); return calculator.add(a, b); } @Override public int subtract(int a, int b) { return calculator.subtract(a, b); } @Override public int multiply(int a, int b) { logger.finest(String.format("multiply(%s, %s)", a, b)); return calculator.multiply(a, b); } @Override public int divide(int a, int b) { return calculator.divide(a, b); } @Override public int remainder(int a, int b) { logger.info(String.format("remainder(%s, %s)", a, b)); return calculator.remainder(a, b); } } ## CalculatorSecurity package org.superbiz.cdi.decorators; import javax.decorator.Decorator; import javax.decorator.Delegate; import javax.ejb.SessionContext; import javax.inject.Inject; @Decorator public class CalculatorSecurity implements Calculator { @Inject @Delegate private Calculator calculator; @Inject private SessionContext sessionContext; @Override public int add(int a, int b) { return calculator.add(a, b); } @Override public int subtract(int a, int b) { // Caller must pass a security check to call subtract if (!sessionContext.isCallerInRole("Manager")) throw new AccessDeniedException(sessionContext.getCallerPrincipal().getName()); return calculator.subtract(a, b); } @Override public int multiply(int a, int b) { return calculator.multiply(a, b); } @Override public int divide(int a, int b) { return calculator.divide(a, b); } @Override public int remainder(int a, int b) { return calculator.remainder(a, b); } } ## beans.xml <beans> <!-- Explicitly declaring decorators is required by the CDI specification. The order decorators are listed in the xml is the order in which they are invoked. --> <decorators> <class>org.superbiz.cdi.decorators.CalculatorSecurity</class> <class>org.superbiz.cdi.decorators.CalculatorLogging</class> </decorators> </beans> ## CalculatorTest package org.superbiz.cdi.decorators; import junit.framework.TestCase; import javax.annotation.security.RunAs; import javax.ejb.EJB; import javax.ejb.Stateless; import javax.ejb.embeddable.EJBContainer; import java.util.concurrent.Callable; public class CalculatorTest extends TestCase { @EJB private Calculator calculator; @EJB private ManagerBean manager; /** * Bootstrap the Embedded EJB Container * * @throws Exception */ protected void setUp() throws Exception { EJBContainer.createEJBContainer().getContext().bind("inject", this); } /** * Test Add method */ public void testAdd() { assertEquals(10, calculator.add(4, 6)); } /** * Test Subtract method */ public void testSubtract() { try { calculator.subtract(4, 6); fail("AccessDeniedException should have been thrown for unauthenticated access"); } catch (AccessDeniedException expected) { // pass } final int result = manager.call(new Callable<Integer>() { public Integer call() { return calculator.subtract(4, 6); } }); assertEquals(-2, result); } /** * Test Multiply method */ public void testMultiply() { assertEquals(24, calculator.multiply(4, 6)); } /** * Test Divide method */ public void testDivide() { assertEquals(2, calculator.divide(12, 6)); } /** * Test Remainder method */ public void testRemainder() { assertEquals(4, calculator.remainder(46, 6)); } @Stateless @RunAs("Manager") public static class ManagerBean { public <V> V call(Callable<V> callable) { try { return callable.call(); } catch (Exception e) { throw new RuntimeException(e); } } } } # Running ------------------------------------------------------- T E S T S ------------------------------------------------------- Running org.superbiz.cdi.decorators.CalculatorTest Apache OpenEJB 4.0.0-beta-1 build: 20111002-04:06 http://tomee.apache.org/ INFO - openejb.home = /Users/dblevins/examples/decorators INFO - openejb.base = /Users/dblevins/examples/decorators INFO - Using 'javax.ejb.embeddable.EJBContainer=true' INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service) INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager) INFO - Found EjbModule in classpath: /Users/dblevins/examples/decorators/target/classes INFO - Found EjbModule in classpath: /Users/dblevins/examples/decorators/target/test-classes INFO - Beginning load: /Users/dblevins/examples/decorators/target/classes INFO - Beginning load: /Users/dblevins/examples/decorators/target/test-classes INFO - Configuring enterprise application: /Users/dblevins/examples/decorators WARN - Method 'lookup' is not available for 'javax.annotation.Resource'. Probably using an older Runtime. INFO - Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container) INFO - Auto-creating a container for bean decorators.Comp: Container(type=MANAGED, id=Default Managed Container) INFO - Configuring Service(id=Default Stateless Container, type=Container, provider-id=Default Stateless Container) INFO - Auto-creating a container for bean CalculatorBean: Container(type=STATELESS, id=Default Stateless Container) INFO - Enterprise application "/Users/dblevins/examples/decorators" loaded. INFO - Assembling app: /Users/dblevins/examples/decorators INFO - Jndi(name="java:global/decorators/decorators.Comp!org.apache.openejb.BeanContext$Comp") INFO - Jndi(name="java:global/decorators/decorators.Comp") INFO - Jndi(name="java:global/decorators/CalculatorBean!org.superbiz.cdi.decorators.Calculator") INFO - Jndi(name="java:global/decorators/CalculatorBean") INFO - Jndi(name="java:global/decorators/ManagerBean!org.superbiz.cdi.decorators.CalculatorTest$ManagerBean") INFO - Jndi(name="java:global/decorators/ManagerBean") INFO - Jndi(name="java:global/EjbModule628834558/org.superbiz.cdi.decorators.CalculatorTest!org.superbiz.cdi.decorators.CalculatorTest") INFO - Jndi(name="java:global/EjbModule628834558/org.superbiz.cdi.decorators.CalculatorTest") INFO - Created Ejb(deployment-id=CalculatorBean, ejb-name=CalculatorBean, container=Default Stateless Container) INFO - Created Ejb(deployment-id=decorators.Comp, ejb-name=decorators.Comp, container=Default Managed Container) INFO - Created Ejb(deployment-id=ManagerBean, ejb-name=ManagerBean, container=Default Stateless Container) INFO - Created Ejb(deployment-id=org.superbiz.cdi.decorators.CalculatorTest, ejb-name=org.superbiz.cdi.decorators.CalculatorTest, container=Default Managed Container) INFO - Started Ejb(deployment-id=CalculatorBean, ejb-name=CalculatorBean, container=Default Stateless Container) INFO - Started Ejb(deployment-id=decorators.Comp, ejb-name=decorators.Comp, container=Default Managed Container) INFO - Started Ejb(deployment-id=ManagerBean, ejb-name=ManagerBean, container=Default Stateless Container) INFO - Started Ejb(deployment-id=org.superbiz.cdi.decorators.CalculatorTest, ejb-name=org.superbiz.cdi.decorators.CalculatorTest, container=Default Managed Container) INFO - Deployed Application(path=/Users/dblevins/examples/decorators) INFO - EJBContainer already initialized. Call ejbContainer.close() to allow reinitialization Oct 29, 2011 11:41:04 AM org.apache.webbeans.decorator.DelegateHandler invoke SEVERE: Exception in calling method : [subtract] in decorator class : [org.superbiz.cdi.decorators.CalculatorSecurity]. Look in the log for target checked exception. org.superbiz.cdi.decorators.AccessDeniedException: guest at org.superbiz.cdi.decorators.CalculatorSecurity.subtract(CalculatorSecurity.java:43) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.webbeans.decorator.DelegateHandler.invoke(DelegateHandler.java:98) at org.apache.openejb.cdi.CdiInterceptor.invoke(CdiInterceptor.java:127) at org.apache.openejb.cdi.CdiInterceptor.access$000(CdiInterceptor.java:45) at org.apache.openejb.cdi.CdiInterceptor$1.call(CdiInterceptor.java:66) at org.apache.openejb.cdi.CdiInterceptor.aroundInvoke(CdiInterceptor.java:72) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181) at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163) at org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:130) at org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:226) at org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:178) at org.apache.openejb.core.ivm.EjbObjectProxyHandler.synchronizedBusinessMethod(EjbObjectProxyHandler.java:255) at org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:235) at org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:92) at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:284) at $Proxy44.subtract(Unknown Source) at org.superbiz.cdi.decorators.CalculatorTest.testSubtract(CalculatorTest.java:59) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at junit.framework.TestCase.runTest(TestCase.java:168) at junit.framework.TestCase.runBare(TestCase.java:134) at junit.framework.TestResult$1.protect(TestResult.java:110) at junit.framework.TestResult.runProtected(TestResult.java:128) at junit.framework.TestResult.run(TestResult.java:113) at junit.framework.TestCase.run(TestCase.java:124) at junit.framework.TestSuite.runTest(TestSuite.java:232) at junit.framework.TestSuite.run(TestSuite.java:227) at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83) at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:35) at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:115) at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:97) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.maven.surefire.booter.ProviderFactory$ClassLoaderProxy.invoke(ProviderFactory.java:103) at $Proxy0.invoke(Unknown Source) at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:150) at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcess(SurefireStarter.java:91) at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:69) INFO - EJBContainer already initialized. Call ejbContainer.close() to allow reinitialization INFO - EJBContainer already initialized. Call ejbContainer.close() to allow reinitialization INFO - EJBContainer already initialized. Call ejbContainer.close() to allow reinitialization Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.338 sec Results : Tests run: 5, Failures: 0, Errors: 0, Skipped: 0