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package org.glassfish.ejb.deployment.annotation.handlers;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.logging.Level;
import javax.ejb.AfterBegin;
import javax.ejb.Stateful;
import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.deployment.annotation.context.EjbContext;
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.EjbSessionDescriptor;
import org.jvnet.hk2.annotations.Service;
/**
* This handler is responsible for handling the javax.ejb.AfterBegin
* annotation on a Bean method.
*
* @author Marina Vatkina
*/
@Service
@AnnotationHandlerFor(AfterBegin.class)
public class AfterBeginHandler extends AbstractAttributeHandler {
public AfterBeginHandler() {
}
protected HandlerProcessingResult processAnnotation(AnnotationInfo ainfo,
EjbContext[] ejbContexts) throws AnnotationProcessorException {
for (EjbContext ejbContext : ejbContexts) {
EjbSessionDescriptor ejbDesc =
(EjbSessionDescriptor) ejbContext.getDescriptor();
Method annMethod = (Method) ainfo.getAnnotatedElement();
checkValid(annMethod);
if (logger.isLoggable(Level.FINE)) {
logger.fine("Setting AfterBegin method " + annMethod);
}
ejbDesc.setAfterBeginMethodIfNotSet(new MethodDescriptor(annMethod));
}
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<? extends Annotation>[] getTypeDependencies() {
return new Class[] { Stateful.class};
}
protected boolean supportTypeInheritance() {
return true;
}
/**
* Verify that the return type is void and it's a no-arg method
*/
private void checkValid(Method m) throws AnnotationProcessorException {
if ( !(m.getReturnType().equals(Void.TYPE) &&
m.getParameterTypes().length == 0) ) {
throw new AnnotationProcessorException("Method " + m +
"annotated as @AfterBegin is not valid");
}
}
}