/*
* $Id: DWRValidator.java 670170 2008-06-21 09:40:34Z hermanns $
*
* 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.struts2.validators;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.dispatcher.ApplicationMap;
import org.apache.struts2.dispatcher.Dispatcher;
import org.apache.struts2.dispatcher.RequestMap;
import org.apache.struts2.dispatcher.SessionMap;
import org.apache.struts2.dispatcher.mapper.ActionMapper;
import org.apache.struts2.dispatcher.mapper.ActionMapping;
import uk.ltd.getahead.dwr.WebContextFactory;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.ActionProxy;
import com.opensymphony.xwork2.ActionProxyFactory;
import com.opensymphony.xwork2.DefaultActionInvocation;
import com.opensymphony.xwork2.ValidationAware;
import com.opensymphony.xwork2.ValidationAwareSupport;
import com.opensymphony.xwork2.config.Configuration;
import com.opensymphony.xwork2.config.entities.ActionConfig;
import com.opensymphony.xwork2.inject.Inject;
import com.opensymphony.xwork2.util.logging.Logger;
import com.opensymphony.xwork2.util.logging.LoggerFactory;
/**
* <p/>
* Use the dwr configuration as follows :-
*
* <pre>
* <!-- START SNIPPET: dwrConfiguration -->
*
* <dwr>
* <allow>
* <create creator="new" javascript="validator" class="org.apache.struts2.validators.DWRValidator"/>
* <convert converter="bean" match="com.opensymphony.xwork2.ValidationAwareSupport"/>
* </allow>
* </dwr>
*
* <!-- END SNIPPET: dwrConfiguration -->
* </pre>
*/
public class DWRValidator {
private static final Logger LOG = LoggerFactory.getLogger(DWRValidator.class);
public ValidationAwareSupport doPost(String namespace, String action, Map params) throws Exception {
HttpServletRequest req = WebContextFactory.get().getHttpServletRequest();
ServletContext servletContext = WebContextFactory.get().getServletContext();
HttpServletResponse res = WebContextFactory.get().getHttpServletResponse();
Map<String, Object> requestParams = new HashMap<String, Object>(req.getParameterMap());
if (params != null) {
requestParams.putAll(params);
} else {
params = requestParams;
}
Map requestMap = new RequestMap(req);
Map session = new SessionMap(req);
Map application = new ApplicationMap(servletContext);
Dispatcher du = Dispatcher.getInstance();
HashMap<String, Object> ctx = du.createContextMap(requestMap,
params,
session,
application,
req,
res,
servletContext);
try {
ActionMapper actionMapper = du.getContainer().getInstance(ActionMapper.class);
ActionMapping mapping = actionMapper.getMappingFromActionName(action);
ActionInvocation inv = new ValidatorActionInvocation(ctx, true);
ActionProxyFactory actionProxyFactory = du.getContainer().getInstance(ActionProxyFactory.class);
ActionProxy proxy = actionProxyFactory.createActionProxy(inv, namespace, mapping.getName(), mapping.getMethod(), true, true);
proxy.execute();
Object a = proxy.getAction();
if (a instanceof ValidationAware) {
ValidationAware aware = (ValidationAware) a;
ValidationAwareSupport vas = new ValidationAwareSupport();
vas.setActionErrors(aware.getActionErrors());
vas.setActionMessages(aware.getActionMessages());
vas.setFieldErrors(aware.getFieldErrors());
return vas;
} else {
return null;
}
} catch (Exception e) {
LOG.error("Error while trying to validate", e);
return null;
}
}
public static class ValidatorActionInvocation extends DefaultActionInvocation {
private static final long serialVersionUID = -7645433725470191275L;
protected ValidatorActionInvocation(Map<String, Object> extraContext, boolean pushAction) throws Exception {
super(extraContext, pushAction);
}
protected String invokeAction(Object action, ActionConfig actionConfig) throws Exception {
return Action.NONE; // don't actually execute the action
}
}
}