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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.Method;
import java.util.logging.Level;
import jakarta.ejb.Asynchronous;
import jakarta.ejb.Local;
import jakarta.ejb.Remote;
import jakarta.ejb.Singleton;
import jakarta.ejb.Stateful;
import jakarta.ejb.Stateless;
import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.deployment.annotation.context.EjbContext;
import com.sun.enterprise.deployment.annotation.handlers.PostProcessor;
import org.glassfish.apf.AnnotationHandlerFor;
import org.glassfish.apf.AnnotationInfo;
import org.glassfish.apf.AnnotationProcessorException;
import org.glassfish.apf.HandlerProcessingResult;
import org.glassfish.ejb.deployment.descriptor.EjbDescriptor;
import org.glassfish.ejb.deployment.descriptor.EjbSessionDescriptor;
import org.jvnet.hk2.annotations.Service;
/**
* This handler is responsible for handling the jakarta.ejb.Asynchronous
* annotation on the Bean class.
*
* @author Marina Vatkina
*/
@Service
@AnnotationHandlerFor(Asynchronous.class)
public class AsynchronousHandler extends AbstractAttributeHandler
implements PostProcessor {
public AsynchronousHandler() {
}
protected HandlerProcessingResult processAnnotation(AnnotationInfo ainfo,
EjbContext[] ejbContexts) throws AnnotationProcessorException {
for (EjbContext ejbContext : ejbContexts) {
EjbDescriptor ejbDesc = (EjbDescriptor) ejbContext.getDescriptor();
if (ElementType.TYPE.equals(ainfo.getElementType())) {
ejbContext.addPostProcessInfo(ainfo, this);
} else {
Method annMethod = (Method) ainfo.getAnnotatedElement();
setAsynchronous(annMethod, ejbDesc);
}
}
return getDefaultProcessedResult();
}
/**
* @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 new Class[] {
Local.class, Remote.class, Stateful.class, Stateless.class, Singleton.class};
}
protected boolean supportTypeInheritance() {
return true;
}
/**
* Set the default value (from class type annotation) on all
* methods that don't have a value.
* Class type annotation applies to all EJB 3.x Local/Remote/no-interface
* views in which that business method is exposed for that bean.
*/
public void postProcessAnnotation(AnnotationInfo ainfo, EjbContext ejbContext)
throws AnnotationProcessorException {
EjbDescriptor ejbDesc = (EjbDescriptor) ejbContext.getDescriptor();
Class classAn = (Class)ainfo.getAnnotatedElement();
Method[] methods = classAn.getDeclaredMethods();
for (Method m0 : methods) {
setAsynchronous(m0, ejbDesc);
}
}
private void setAsynchronous(Method m0, EjbDescriptor ejbDesc)
throws AnnotationProcessorException {
// All methods processed on bean class / superclass apply to all local/remote
// business interfaces
setAsynchronous(m0, ejbDesc, null);
}
/**
* Designate a method as asynchronous in the deployment descriptor
* @param methodIntf null if processed on bean class / superclass. Otherwise,
* set to the remote/local client view of the associated interface
* @throws AnnotationProcessorException
*/
private void setAsynchronous(Method m0, EjbDescriptor ejbDesc, String methodIntf)
throws AnnotationProcessorException {
if( !ejbDesc.getType().equals(EjbSessionDescriptor.TYPE)) {
throw new AnnotationProcessorException("Invalid asynchronous method " + m0 +
"@Asynchronous is only permitted for session beans");
}
EjbSessionDescriptor sessionDesc = (EjbSessionDescriptor) ejbDesc;
MethodDescriptor methodDesc = (methodIntf == null) ?
new MethodDescriptor(m0) : new MethodDescriptor(m0, methodIntf);
if (logger.isLoggable(Level.FINE)) {
logger.fine("Adding asynchronous method " + methodDesc);
}
// There is no way to "turn off" the asynchronous designation in the
// deployment descriptor, so we don't need to do any override checks
// here. Just always add any async methods.
sessionDesc.addAsynchronousMethod(methodDesc);
}
}