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Provides Spring integration for Vaadin applications.
/*
* Copyright 2015 The original authors
*
* 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.vaadin.spring.server;
import java.util.List;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import com.vaadin.server.DeploymentConfiguration;
import com.vaadin.server.RequestHandler;
import com.vaadin.server.ServiceException;
import com.vaadin.server.VaadinServlet;
import com.vaadin.server.VaadinServletService;
import com.vaadin.server.communication.ServletBootstrapHandler;
/**
* Servlet service class that allows customization of the service URL
* (client-server communication base URL).
*/
public class SpringVaadinServletService extends VaadinServletService {
private String serviceUrl;
/**
* Create a servlet service instance that allows the use of a custom service
* URL.
*
* @param servlet
* @param deploymentConfiguration
* @param serviceUrl
* custom service URL to use (relative to context path, starting
* with a slash) or null for default
* @throws ServiceException
*/
public SpringVaadinServletService(VaadinServlet servlet,
DeploymentConfiguration deploymentConfiguration, String serviceUrl)
throws ServiceException {
super(servlet, deploymentConfiguration);
this.serviceUrl = serviceUrl;
}
@Override
protected List createRequestHandlers()
throws ServiceException {
List handlers = super.createRequestHandlers();
// replace bootstrap handler with a custom one if service URL set
if (serviceUrl != null) {
// need to keep the position of the handler on the list
for (int i = 0; i < handlers.size(); ++i) {
if (handlers.get(i) instanceof ServletBootstrapHandler) {
handlers.set(i, new ServletBootstrapHandler() {
@Override
protected String getServiceUrl(BootstrapContext context) {
return context.getRequest().getContextPath()
+ serviceUrl;
}
});
}
}
}
return handlers;
}
/**
* Find the Spring web application context related to the servlet context.
*
*/
public WebApplicationContext getWebApplicationContext() {
return WebApplicationContextUtils
.getWebApplicationContext(getServlet().getServletContext());
}
}
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