/*
* 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.myfaces.extensions.cdi.core.impl.util;
import org.apache.myfaces.extensions.cdi.core.api.AbstractClassDeactivator;
import org.apache.myfaces.extensions.cdi.core.api.ClassDeactivator;
import javax.enterprise.inject.Typed;
import java.util.logging.Logger;
/**
* @author Gerhard Petracek
*/
@Typed()
public class ClassDeactivation
{
private static final Logger LOGGER = Logger.getLogger(ClassDeactivation.class.getName());
private ClassDeactivation()
{
}
/**
* Evaluates if the given class is active
* @param targetClass current class
* @return true if it is active, false otherwise
*/
public static boolean isClassActivated(Class targetClass)
{
ClassDeactivator classDeactivator = ClassDeactivatorStorage.getClassDeactivator();
if(classDeactivator == null)
{
classDeactivator = getClassDeactivator();
}
boolean classDeactivated = classDeactivator.getDeactivatedClasses().contains(targetClass);
return !classDeactivated;
}
/**
* Allows to provide a custom {@link ClassDeactivator}
* @param classDeactivator class-deactivator which should be used
*/
public static void setClassDeactivator(ClassDeactivator classDeactivator)
{
ClassDeactivatorStorage.setClassDeactivator(classDeactivator);
}
private static ClassDeactivator getClassDeactivator()
{
ClassDeactivator classDeactivator =
CodiUtils.lookupFromEnvironment(ClassDeactivator.class, new ClassDeactivatorAggregator(), null);
// use default deactivator
if (classDeactivator == null)
{
classDeactivator = createClassDeactivatorPlaceholder();
}
else
{
LOGGER.info("used class deactivator: " + classDeactivator.toString());
// display deactivated classes here once
// NOTE that isClassActivated() will be called many times for the same class
for (Class<?> deactivatedClass : classDeactivator.getDeactivatedClasses())
{
LOGGER.info("deactivate: " + deactivatedClass);
}
}
ClassDeactivatorStorage.setClassDeactivator(classDeactivator);
return classDeactivator;
}
private static AbstractClassDeactivator createClassDeactivatorPlaceholder()
{
return new AbstractClassDeactivator()
{
private static final long serialVersionUID = 3365575383802245760L;
protected void deactivateClasses()
{
//do nothing
}
};
}
}