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package com.sun.jersey.server.impl.ejb;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProcessor;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProcessorFactory;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import javax.annotation.ManagedBean;
import javax.annotation.PostConstruct;
import javax.interceptor.InvocationContext;
import javax.ws.rs.ext.Provider;
final class EJBInjectionInterceptor {
private IoCComponentProcessorFactory cpf;
private final ConcurrentMap<Class, IoCComponentProcessor> componentProcessorMap =
new ConcurrentHashMap<Class, IoCComponentProcessor>();
public void setFactory(IoCComponentProcessorFactory cpf) {
this.cpf = cpf;
}
@PostConstruct
private void init(final InvocationContext context) throws Exception {
if (cpf == null) {
// Not initialized
return;
}
final Object beanInstance = context.getTarget();
final IoCComponentProcessor icp = get(beanInstance.getClass());
if (icp != null)
icp.postConstruct(beanInstance);
// Invoke next interceptor in chain
context.proceed();
}
private static final IoCComponentProcessor NULL_COMPONENT_PROCESSOR = new IoCComponentProcessor() {
public void preConstruct() {
}
public void postConstruct(Object o) {
}
};
private IoCComponentProcessor get(final Class c) {
IoCComponentProcessor cp = componentProcessorMap.get(c);
if (cp != null) {
return (cp == NULL_COMPONENT_PROCESSOR) ? null : cp;
}
synchronized (componentProcessorMap) {
cp = componentProcessorMap.get(c);
if (cp != null) {
return (cp == NULL_COMPONENT_PROCESSOR) ? null : cp;
}
final ComponentScope cs = c.isAnnotationPresent(ManagedBean.class)
? c.isAnnotationPresent(Provider.class)
? ComponentScope.Singleton
: cpf.getScope(c)
: ComponentScope.Singleton;
cp = cpf.get(c, cs);
if (cp != null) {
componentProcessorMap.put(c, cp);
} else {
componentProcessorMap.put(c, NULL_COMPONENT_PROCESSOR);
}
}
return cp;
}
}