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Micro Distribution of the Payara Project for IBM JDK
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package org.glassfish.ejb.deployment.annotation.handlers;
import java.lang.annotation.Annotation;
import java.lang.annotation.ElementType;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.Set;
import javax.ejb.PostActivate;
import javax.ejb.PrePassivate;
import javax.interceptor.AroundInvoke;
import javax.interceptor.AroundTimeout;
import javax.interceptor.Interceptors;
import com.sun.enterprise.deployment.EjbInterceptor;
import com.sun.enterprise.deployment.LifecycleCallbackDescriptor;
import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.deployment.annotation.context.EjbContext;
import com.sun.enterprise.deployment.annotation.context.EjbInterceptorContext;
import org.glassfish.apf.AnnotationHandlerFor;
import org.glassfish.apf.AnnotationInfo;
import org.glassfish.apf.AnnotationProcessorException;
import org.glassfish.apf.HandlerProcessingResult;
import org.glassfish.apf.ProcessingContext;
import org.glassfish.apf.impl.ComponentDefinition;
import org.glassfish.ejb.deployment.descriptor.EjbBundleDescriptorImpl;
import org.glassfish.ejb.deployment.descriptor.EjbDescriptor;
import org.glassfish.ejb.deployment.descriptor.InterceptorBindingDescriptor;
import org.jvnet.hk2.annotations.Service;
import static com.sun.enterprise.deployment.LifecycleCallbackDescriptor.CallbackType;
/**
* This handler is responsible for handling javax.ejb.Interceptors
*
*/
@Service
@AnnotationHandlerFor(Interceptors.class)
public class InterceptorsHandler extends AbstractAttributeHandler {
public InterceptorsHandler() {
}
protected boolean supportTypeInheritance() {
return true;
}
protected HandlerProcessingResult processAnnotation(AnnotationInfo ainfo,
EjbContext[] ejbContexts) throws AnnotationProcessorException {
Interceptors interceptors = (Interceptors) ainfo.getAnnotation();
EjbBundleDescriptorImpl ejbBundle =
((EjbDescriptor)ejbContexts[0].getDescriptor()).
getEjbBundleDescriptor();
// Process each of the interceptor classes.
for(Class interceptor : interceptors.value()) {
processInterceptorClass(interceptor, ejbBundle, ainfo);
}
for(EjbContext next : ejbContexts) {
EjbDescriptor ejbDescriptor = (EjbDescriptor) next.getDescriptor();
// Create binding information.
InterceptorBindingDescriptor binding =
new InterceptorBindingDescriptor();
binding.setEjbName(ejbDescriptor.getName());
for(Class interceptor : interceptors.value()) {
binding.appendInterceptorClass(interceptor.getName());
}
if(ElementType.METHOD.equals(ainfo.getElementType())) {
Method m = (Method) ainfo.getAnnotatedElement();
MethodDescriptor md =
new MethodDescriptor(m, MethodDescriptor.EJB_BEAN);
binding.setBusinessMethod(md);
} else if(ElementType.CONSTRUCTOR.equals(ainfo.getElementType())) {
Constructor c = (Constructor) ainfo.getAnnotatedElement();
Class cl = c.getDeclaringClass();
Class[] ctorParamTypes = c.getParameterTypes();
String[] parameterClassNames = (new MethodDescriptor()).getParameterClassNamesFor(null, ctorParamTypes);
MethodDescriptor md = new MethodDescriptor(cl.getSimpleName(), null,
parameterClassNames, MethodDescriptor.EJB_BEAN);
binding.setBusinessMethod(md);
}
// All binding information processed from annotations should go
// before the binding information processed from the descriptors.
// Since descriptors are processed first, always place the binding
// info at the front. The binding information from the descriptor
// is ordered, but there is no prescribed order in which the
// annotations are processed, so all that matters is that it's
// before the descriptor bindings and that the descriptor binding
// order is preserved.
ejbBundle.prependInterceptorBinding(binding);
}
return getDefaultProcessedResult();
}
private void processInterceptorClass(Class interceptorClass,
EjbBundleDescriptorImpl ejbBundle, AnnotationInfo ainfo)
throws AnnotationProcessorException {
Set aroundInvokeDescriptors =
new HashSet();
Set aroundTimeoutDescriptors =
new HashSet();
Set postActivateDescriptors =
new HashSet();
Set prePassivateDescriptors =
new HashSet();
ComponentDefinition cdef = new ComponentDefinition(interceptorClass);
for(Method m : cdef.getMethods()) {
if( m.getAnnotation(AroundInvoke.class) != null ) {
aroundInvokeDescriptors.add(getLifecycleCallbackDescriptor(m));
}
if( m.getAnnotation(AroundTimeout.class) != null ) {
aroundTimeoutDescriptors.add(getLifecycleCallbackDescriptor(m));
}
if( m.getAnnotation(PostActivate.class) != null ) {
postActivateDescriptors.add(getLifecycleCallbackDescriptor(m));
}
if( m.getAnnotation(PrePassivate.class) != null ) {
prePassivateDescriptors.add(getLifecycleCallbackDescriptor(m));
}
}
EjbInterceptor interceptor =
ejbBundle.getInterceptorByClassName(interceptorClass.getName());
if (interceptor == null) {
interceptor = new EjbInterceptor();
interceptor.setInterceptorClassName(interceptorClass.getName());
// Add interceptor to the set of all interceptors in the ejb-jar
ejbBundle.addInterceptor(interceptor);
}
if (aroundInvokeDescriptors.size() > 0) {
interceptor.addAroundInvokeDescriptors(aroundInvokeDescriptors);
}
if (aroundTimeoutDescriptors.size() > 0) {
interceptor.addAroundTimeoutDescriptors(aroundTimeoutDescriptors);
}
if (postActivateDescriptors.size() > 0) {
interceptor.addCallbackDescriptors(CallbackType.POST_ACTIVATE,
postActivateDescriptors);
}
if (prePassivateDescriptors.size() > 0) {
interceptor.addCallbackDescriptors(CallbackType.PRE_PASSIVATE,
prePassivateDescriptors);
}
// process resource related annotations
EjbInterceptorContext ejbInterceptorContext =
new EjbInterceptorContext(interceptor);
ProcessingContext procContext = ainfo.getProcessingContext();
procContext.pushHandler(ejbInterceptorContext);
procContext.getProcessor().process(
procContext, new Class[] { interceptorClass });
return;
}
/**
* @return an array of annotation types this annotation handler would
* require to be processed (if present) before it processes it's own
* annotation type.
*/
public Class[] getTypeDependencies() {
return getEjbAnnotationTypes();
}
private LifecycleCallbackDescriptor getLifecycleCallbackDescriptor(Method m) {
LifecycleCallbackDescriptor lccDesc = new LifecycleCallbackDescriptor();
lccDesc.setLifecycleCallbackClass(m.getDeclaringClass().getName());
lccDesc.setLifecycleCallbackMethod(m.getName());
return lccDesc;
}
}
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