com.sun.jersey.server.impl.ejb.EJBComponentProviderFactory Maven / Gradle / Ivy
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package com.sun.jersey.server.impl.ejb;
import com.sun.jersey.api.container.ContainerException;
import com.sun.jersey.core.spi.component.ComponentContext;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProcessorFactory;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProcessorFactoryInitializer;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProvider;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProviderFactory;
import com.sun.jersey.core.spi.component.ioc.IoCFullyManagedComponentProvider;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.Singleton;
import javax.ejb.Stateless;
import javax.naming.InitialContext;
import javax.naming.NamingException;
/**
*
* @author [email protected]
*/
final class EJBComponentProviderFactory implements
IoCComponentProviderFactory,
IoCComponentProcessorFactoryInitializer {
private static final Logger LOGGER = Logger.getLogger(
EJBComponentProviderFactory.class.getName());
private final EJBInjectionInterceptor interceptor;
public EJBComponentProviderFactory(EJBInjectionInterceptor interceptor) {
this.interceptor = interceptor;
}
// IoCComponentProviderFactory
public IoCComponentProvider getComponentProvider(Class c) {
return getComponentProvider(null, c);
}
public IoCComponentProvider getComponentProvider(ComponentContext cc, Class c) {
String name = getName(c);
if (name == null) {
return null;
}
try {
InitialContext ic = new InitialContext();
Object o = lookup(ic, c, name);
LOGGER.info("Binding the EJB class " + c.getName() +
" to EJBManagedComponentProvider");
return new EJBManagedComponentProvider(o);
} catch (NamingException ex) {
String message = "An instance of EJB class " + c.getName() +
" could not be looked up using simple form name or the fully-qualified form name." +
"Ensure that the EJB/JAX-RS component implements at most one interface.";
LOGGER.log(Level.SEVERE, message, ex);
throw new ContainerException(message);
}
}
private String getName(Class c) {
String name = null;
if (c.isAnnotationPresent(Stateless.class)) {
name = c.getAnnotation(Stateless.class).name();
} else if (c.isAnnotationPresent(Singleton.class)) {
name = c.getAnnotation(Singleton.class).name();
} else {
return null;
}
if (name == null || name.length() == 0) {
name = c.getSimpleName();
}
return name;
}
private Object lookup(InitialContext ic, Class c, String name) throws NamingException {
try {
return lookupSimpleForm(ic, c, name);
} catch (NamingException ex) {
LOGGER.log(Level.WARNING, "An instance of EJB class " + c.getName() +
" could not be looked up using simple form name. " +
"Attempting to look up using the fully-qualified form name.", ex);
return lookupFullyQualfiedForm(ic, c, name);
}
}
private Object lookupSimpleForm(InitialContext ic, Class c, String name) throws NamingException {
String jndiName = "java:module/" + name;
return ic.lookup(jndiName);
}
private Object lookupFullyQualfiedForm(InitialContext ic, Class c, String name) throws NamingException {
String jndiName = "java:module/" + name + "!" + c.getName();
return ic.lookup(jndiName);
}
private static class EJBManagedComponentProvider implements IoCFullyManagedComponentProvider {
private final Object o;
EJBManagedComponentProvider(Object o) {
this.o = o;
}
public ComponentScope getScope() {
return ComponentScope.Singleton;
}
public Object getInstance() {
return o;
}
}
// IoCComponentProcessorFactoryInitializer
public void init(IoCComponentProcessorFactory cpf) {
interceptor.setFactory(cpf);
}
}