gistfile1.txt

/*
 * Copyright 2011 <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
 * 
 * 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.rewrite.servlet.config.parameters;

import javax.servlet.ServletContext;

import com.ocpsoft.rewrite.EvaluationContext;
import com.ocpsoft.rewrite.config.Configuration;
import com.ocpsoft.rewrite.config.ConfigurationBuilder;
import com.ocpsoft.rewrite.config.Direction;
import com.ocpsoft.rewrite.servlet.config.HttpConfigurationProvider;
import com.ocpsoft.rewrite.servlet.config.HttpOperation;
import com.ocpsoft.rewrite.servlet.config.Path;
import com.ocpsoft.rewrite.servlet.config.RequestParameter;
import com.ocpsoft.rewrite.servlet.config.SendStatus;
import com.ocpsoft.rewrite.servlet.config.UrlMapping;
import com.ocpsoft.rewrite.servlet.http.event.HttpServletRewrite;

/**
 * @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
 * 
 */
public class UrlMappingConfigurationProvider extends HttpConfigurationProvider
{
   @Override
   public int priority()
   {
      return 0;
   }

   /**
    * <b>Inbound:</b><br>
    * -----------<br>
    * If URL matches pattern, forward to resource with parameters converted into request parameters.
    * <p>
    * <b>Outbound:</b><br>
    * -----------<br>
    * If URL matches resource, and parameters specified in pattern exist as query parameters, convert the URL to the
    * form specified by pattern.
    */
   @Override
   public Configuration getConfiguration(final ServletContext context)
   {
      Configuration config = ConfigurationBuilder.begin()

               .add(UrlMapping.pattern("/p/{project}").resource("/viewProject.xhtml"))

               /*
                * Now verify that we actually did what we said we did.
                */
               .defineRule().when(Direction.isInbound().and(Path.matches("/viewProject.xhtml"))
                        .and(RequestParameter.exists("project")))
               .perform(new HttpOperation() {

                  @Override
                  public void performHttp(final HttpServletRewrite event, final EvaluationContext context)
                  {
                     String projectName = event.getRequest().getParameter("project");
                     String encodedURL = event.getResponse().encodeURL(
                              event.getContextPath() + "/viewProject.xhtml?project=" + projectName);
                     if ("rewrite".equals(projectName) && "/rewrite-test/p/rewrite".equals(encodedURL))
                     {
                        SendStatus.code(203).perform(event, context);
                     }
                  }
               });

      return config;
   }
}