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/*
 * Copyright 2010 Lincoln Baxter, III
 * 
 * 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.pretty.faces.config.spi;

import javax.servlet.ServletContext;

import com.ocpsoft.pretty.faces.config.PrettyConfig;
import com.ocpsoft.pretty.faces.config.mapping.UrlMapping;
import com.ocpsoft.pretty.faces.spi.ConfigurationPostProcessor;

/**
 * Ensure that the configuration is properly constructed and compiles.
 * 
 * @author Lincoln Baxter, III
 * 
 */
public class ValidatingPostProcessor implements ConfigurationPostProcessor
{
   public static final String VALIDATION_ENABLED_PARAM = "com.ocpsoft.pretty.VALIDATE_CONFIG";

   public PrettyConfig processConfiguration(ServletContext context, PrettyConfig config)
   {
      String enabled = context.getInitParameter(VALIDATION_ENABLED_PARAM);
      if ((enabled != null) && "false".equalsIgnoreCase(enabled.trim()))
      {
         return config;
      }

      for (UrlMapping m : config.getMappings())
      {
         m.getPatternParser();
      }

      return config;
   }
}