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package com.sun.enterprise.deployment.annotation.handlers;
import java.lang.annotation.Annotation;
import java.lang.reflect.AnnotatedElement;
import java.util.logging.Level;
import javax.ejb.MessageDriven;
import javax.ejb.ActivationConfigProperty;
import com.sun.enterprise.deployment.EjbBundleDescriptor;
import com.sun.enterprise.deployment.EjbDescriptor;
import com.sun.enterprise.deployment.EjbMessageBeanDescriptor;
import com.sun.enterprise.deployment.EnvironmentProperty;
import com.sun.enterprise.deployment.annotation.AnnotationInfo;
import com.sun.enterprise.deployment.annotation.AnnotationProcessorException;
import com.sun.enterprise.deployment.annotation.HandlerProcessingResult;
import com.sun.enterprise.deployment.annotation.context.EjbBundleContext;
/**
* This handler is responsible for handling the javax.ejb.MessageDriven
*
* @author Shing Wai Chan
*/
public class MessageDrivenHandler extends AbstractEjbHandler {
/** Creates a new instance of MessageDrivenHandler */
public MessageDrivenHandler() {
}
/**
* @return the annoation type this annotation handler is handling
*/
public Class<? extends Annotation> getAnnotationType() {
return MessageDriven.class;
}
/**
* Return the name attribute of given annotation.
* @param annotation
* @return name
*/
protected String getAnnotatedName(Annotation annotation) {
MessageDriven mdAn = (MessageDriven)annotation;
return mdAn.name();
}
/**
* Check if the given EjbDescriptor matches the given Annotation.
* @param ejbDesc
* @param annotation
* @return boolean check for validity of EjbDescriptor
*/
protected boolean isValidEjbDescriptor(EjbDescriptor ejbDesc,
Annotation annotation) {
return EjbMessageBeanDescriptor.TYPE.equals(ejbDesc.getType());
}
/**
* Create a new EjbDescriptor for a given elementName and AnnotationInfo.
* @param elementName
* @param ainfo
* @return a new EjbDescriptor
*/
protected EjbDescriptor createEjbDescriptor(String elementName,
AnnotationInfo ainfo) throws AnnotationProcessorException {
AnnotatedElement ae = ainfo.getAnnotatedElement();
EjbMessageBeanDescriptor newDescriptor = new EjbMessageBeanDescriptor();
Class ejbClass = (Class)ae;
newDescriptor.setName(elementName);
newDescriptor.setEjbClassName(ejbClass.getName());
return newDescriptor;
}
/**
* Set Annotation information to Descriptor.
* This method will also be invoked for an existing descriptor with
* annotation as user may not specific a complete xml.
* @param ejbDesc
* @param ainfo
* @return HandlerProcessingResult
*/
protected HandlerProcessingResult setEjbDescriptorInfo(
EjbDescriptor ejbDesc, AnnotationInfo ainfo)
throws AnnotationProcessorException {
MessageDriven mdAn = (MessageDriven)ainfo.getAnnotation();
Class ejbClass = (Class)ainfo.getAnnotatedElement();
EjbMessageBeanDescriptor ejbMsgBeanDesc =
(EjbMessageBeanDescriptor)ejbDesc;
HandlerProcessingResult procResult =
setMessageListenerInterface(
mdAn, ejbMsgBeanDesc, ejbClass, ainfo);
doDescriptionProcessing(mdAn.description(), ejbMsgBeanDesc);
doMappedNameProcessing(mdAn.mappedName(), ejbMsgBeanDesc);
for (ActivationConfigProperty acProp : mdAn.activationConfig()) {
EnvironmentProperty envProp = new EnvironmentProperty(
acProp.propertyName(), acProp.propertyValue(), "");
// with empty description
// xml override
if (ejbMsgBeanDesc.getActivationConfigValue(envProp.getName()) == null) {
ejbMsgBeanDesc.putActivationConfigProperty(envProp);
}
}
return procResult;
}
private HandlerProcessingResult setMessageListenerInterface(
MessageDriven mdAn, EjbMessageBeanDescriptor msgEjbDesc,
Class ejbClass, AnnotationInfo ainfo)
throws AnnotationProcessorException {
String intfName = null;
// If @MessageDriven contains message listener interface, that takes
// precedence. Otherwise, the message listener interface is derived
// from the implements clause.
if( mdAn.messageListenerInterface() != Object.class ) {
intfName = mdAn.messageListenerInterface().getName();
} else {
for(Class next : ejbClass.getInterfaces()) {
if( !excludedFromImplementsClause(next) ) {
if( intfName == null ) {
intfName = next.getName();
} else {
EjbBundleDescriptor currentBundle =
((EjbBundleContext)ainfo.getProcessingContext().getHandler()).getDescriptor();
log(Level.SEVERE, ainfo,
localStrings.getLocalString(
"enterprise.deployment.annotation.handlers.ambiguousimplementsclausemdb",
"Implements clause for 3.x message driven bean class {0} in {1} declares more than one potential message-listener interface. In this case, the @MessageDriven.messageListenerInterface() attribute must be used to specify the message listener interface.",
new Object[] { ejbClass,
currentBundle.getModuleDescriptor().getArchiveUri() }));
return getDefaultFailedResult();
}
}
}
}
// if it's still null, check whether it's defined through
// deployment descriptor
// note: the descriptor class has a default value
// for the interface: javax.jms.MessageListener
// so intfName after this set, will never be null
if (intfName == null) {
intfName = msgEjbDesc.getMessageListenerType();
}
msgEjbDesc.setMessageListenerType(intfName);
return getDefaultProcessedResult();
}
}
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