/*
* Copyright 2010 Lincoln Baxter, III
*
* Licensed 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 com.ocpsoft.pretty.faces.el.resolver;
import javax.faces.bean.ManagedBean;
import javax.servlet.ServletContext;
import com.ocpsoft.pretty.faces.spi.ELBeanNameResolver;
/**
* <p>
* Implementation of {@link ELBeanNameResolver} handling beans configured via the
* JSF 2.0 ManagedBean annotation.
* </p>
*
* @author Christian Kaltepoth
*
*/
public class ManagedBeanAnnotationResolver implements ELBeanNameResolver
{
/*
* @see com.ocpsoft.pretty.faces.el.BeanNameResolver#init(javax.servlet.ServletContext, java.lang.ClassLoader)
*/
public boolean init(ServletContext servletContext, ClassLoader classLoader)
{
// nothing to do here
return true;
}
/*
* @see com.ocpsoft.pretty.faces.el.BeanNameResolver#getBeanName(java.lang.Class)
*/
public String getBeanName(Class<?> clazz)
{
// Try to get ManagedBean annotation
ManagedBean annotation = clazz.getAnnotation(ManagedBean.class);
// No annotation? Abort!
if (annotation == null)
{
return null;
}
// read name property
String beanName = annotation.name();
// we have found a valid value in the name attribute
if (beanName != null && beanName.trim().length() > 0)
{
return beanName.trim();
}
// return default name as specified
else
{
return deriveBeanName(clazz);
}
}
/**
* <p>
* Creates a bean name from a class as described in the specification:
* </p>
* <p>
* If the value of the name attribute is unspecified or is the empty String,
* the managed-bean-name is derived from taking the unqualified class name
* portion of the fully qualified class name and converting the first
* character to lower case.
* </p>
*
* @param beanClass
* class to generate name for
* @return the bean name
*/
private String deriveBeanName(Class<?> beanClass)
{
String className = beanClass.getSimpleName();
return Character.toLowerCase(className.charAt(0)) + className.substring(1);
}
}