/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.deltaspike.core.impl.util;
import org.apache.deltaspike.core.api.scope.ConversationGroup;
import org.apache.deltaspike.core.api.scope.ConversationSubGroup;
import org.apache.deltaspike.core.impl.scope.conversation.ConversationKey;
import javax.enterprise.context.spi.Contextual;
import javax.enterprise.inject.Typed;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.PassivationCapable;
import java.lang.annotation.Annotation;
import java.util.Set;
@Typed()
public abstract class ConversationUtils
{
private ConversationUtils()
{
}
public static ConversationKey convertToConversationKey(Contextual<?> contextual, BeanManager beanManager)
{
if (!(contextual instanceof Bean))
{
if (contextual instanceof PassivationCapable)
{
contextual = beanManager.getPassivationCapableBean(((PassivationCapable) contextual).getId());
}
else
{
throw new IllegalArgumentException(
contextual.getClass().getName() + " is not of type " + Bean.class.getName());
}
}
Bean<?> bean = (Bean<?>) contextual;
//don't cache it (due to the support of different producers)
ConversationGroup conversationGroupAnnotation = findConversationGroupAnnotation(bean);
Class<?> conversationGroup;
if (conversationGroupAnnotation != null)
{
conversationGroup = conversationGroupAnnotation.value();
}
else
{
conversationGroup = bean.getBeanClass();
}
Set<Annotation> qualifiers = bean.getQualifiers();
return new ConversationKey(conversationGroup, qualifiers.toArray(new Annotation[qualifiers.size()]));
}
private static ConversationGroup findConversationGroupAnnotation(Bean<?> bean)
{
Set<Annotation> qualifiers = bean.getQualifiers();
for (Annotation qualifier : qualifiers)
{
if (ConversationGroup.class.isAssignableFrom(qualifier.annotationType()))
{
return (ConversationGroup) qualifier;
}
}
return null;
}
public static Class<?> getDeclaredConversationGroup(Class<?> conversationGroup)
{
ConversationSubGroup conversationSubGroup = conversationGroup.getAnnotation(ConversationSubGroup.class);
if (conversationSubGroup == null)
{
return conversationGroup;
}
Class<?> result = conversationSubGroup.of();
if (!ConversationSubGroup.class.equals(result))
{
return result;
}
result = conversationGroup.getSuperclass();
if ((result == null || Object.class.getName().equals(result.getName())) &&
conversationGroup.getInterfaces().length == 1)
{
return conversationGroup.getInterfaces()[0];
}
if (result == null)
{
//TODO move validation to the bootstrapping process
throw new IllegalStateException(conversationGroup.getName() + " hosts an invalid usage of @" +
ConversationSubGroup.class.getName());
}
return result;
}
}