/*
* ============================================================================
* GNU Lesser General Public License
* ============================================================================
*
* Beanlet - JSE Application Container.
* Copyright (C) 2006 Leon van Zantvoort
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Leon van Zantvoort
* 243 Acalanes Drive #11
* Sunnyvale, CA 94086
* USA
*
* zantvoort@users.sourceforge.net
* http://beanlet.org
*/
package org.beanlet.web.impl;
import org.beanlet.BeanletValidationException;
import org.beanlet.annotation.AnnotationDomain;
import org.beanlet.annotation.TypeElement;
import org.beanlet.plugin.BeanletConfiguration;
import org.beanlet.plugin.BeanletConfigurationValidator;
import org.beanlet.web.WebFilter;
import org.beanlet.web.WebServlet;
import javax.servlet.*;
import javax.servlet.annotation.WebListener;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionListener;
import java.util.Arrays;
import java.util.List;
/**
*
* @author Leon van Zantvoort
*/
public final class WebBeanletConfigurationValidatorImpl implements
BeanletConfigurationValidator {
private static final List<Class> WEB_LISTENER_CLASSES = Arrays.<Class>asList(ServletContextListener.class,
ServletContextAttributeListener.class, ServletRequestListener.class, ServletRequestAttributeListener.class,
HttpSessionListener.class, HttpSessionAttributeListener.class);
public void validate(BeanletConfiguration configuration) throws
BeanletValidationException {
TypeElement element = TypeElement.instance(configuration.getType());
AnnotationDomain domain = configuration.getAnnotationDomain();
WebServlet webServlet = domain.getDeclaration(WebServlet.class).getAnnotation(element);
if (webServlet != null) {
if (!Servlet.class.isAssignableFrom(element.getType())) {
throw new BeanletValidationException(configuration.getComponentName(),
WebServlet.class.getSimpleName() + " annotation MAY only " +
"be applied to elements of type: '" + Servlet.class + "'.");
}
}
WebFilter webFilter = domain.getDeclaration(WebFilter.class).getAnnotation(element);
if (webFilter != null) {
if (!Filter.class.isAssignableFrom(element.getType())) {
throw new BeanletValidationException(configuration.getComponentName(),
WebFilter.class.getSimpleName() + " annotation MAY only " +
"be applied to elements of type: '" + Filter.class + "'.");
}
if (webFilter.urlPatterns().length > 0 && webFilter.servletNames().length > 0) {
throw new BeanletValidationException(configuration.getComponentName(),
"Filter mapping must specify either a url-pattern or a servlet-name.");
}
}
WebListener webListener = domain.getDeclaration(WebListener.class).getAnnotation(element);
if (webListener != null) {
boolean match = false;
for (Class<?> cls : WEB_LISTENER_CLASSES) {
if (cls.isAssignableFrom(element.getType())) {
match = true;
break;
}
}
if (!match) {
throw new BeanletValidationException(configuration.getComponentName(),
WebListener.class.getSimpleName() + " annotation MAY only " +
"be applied to elements of types: '" + WEB_LISTENER_CLASSES + "'.");
}
}
}
}