/* | |
* Copyright 2013 gitblit.com. | |
* | |
* 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.gitblit.dagger; | |
import javax.servlet.Filter; | |
import javax.servlet.FilterConfig; | |
import javax.servlet.ServletContext; | |
import javax.servlet.ServletException; | |
import dagger.ObjectGraph; | |
/** | |
* Uses Dagger to manually inject dependencies into a servlet filter. | |
* This class is useful for servlet containers that offer CDI and are | |
* confused by Dagger. | |
* | |
* @author James Moger | |
* | |
*/ | |
public abstract class DaggerFilter implements Filter { | |
@Override | |
public final void init(FilterConfig filterConfig) throws ServletException { | |
ServletContext context = filterConfig.getServletContext(); | |
ObjectGraph objectGraph = (ObjectGraph) context.getAttribute(DaggerContext.INJECTOR_NAME); | |
inject(objectGraph, filterConfig); | |
} | |
protected abstract void inject(ObjectGraph dagger, FilterConfig filterConfig) throws ServletException; | |
@Override | |
public void destroy() { | |
} | |
} |