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This project is about configuration of applications and about parameterization of Objects. This library offers annotations (and annotation processors), parsers, typing, observing changes, serialization, cloning and more when working with settings and/or object parameters. Settings and its features can be declared using an xml format. The library offers syntax support for settings and parameters in a loosely coupled manner. You are not restricted to built in syntax, you can provide your own. At runtime this library tracks keys for which a default is used because they are not found in settings. Also it tracks unused keys. You can stack features for settings such as caching, preparing keys and values, readonlyness, threadsafety, helpsupport, reading / parsing from input. You can easily develop your own features for settings.

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package com.vectorprint.configuration.binding.parameters;

/*-
 * #%L
 * Config
 * %%
 * Copyright (C) 2015 - 2018 VectorPrint
 * %%
 * 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.
 * #L%
 */

import com.vectorprint.configuration.EnhancedMap;
import com.vectorprint.configuration.parameters.Parameterizable;
import java.util.Arrays;
import java.util.logging.Level;
import java.util.logging.Logger;

public class ParameterHelper {

   private static final Logger log = Logger.getLogger(ParameterHelper.class.getName());


   public enum SUFFIX {set_default, set_value}
   
   /**
    * looks for a default value for a key based on the simpleName of a class suffixed by .key and .suffix. This method
    * will traverse all Parameterizable superclasses in search of a default.
    * @param key the key to find
    * @param clazz
    * @param settings
    * @param suffix 
    * @return the key pointing to default setting or null
    */
   public static String findKey(String key, Class clazz, EnhancedMap settings, SUFFIX suffix) {
      String simpleName = clazz.getSimpleName() + "." + key + "." + suffix;
      while (!settings.containsKey(simpleName)) {
         Class c = clazz.getSuperclass();
         if (!Parameterizable.class.isAssignableFrom(c)) {
            return null;
         }
         clazz=c;
         if (clazz == null) {
            return null;
         }
         simpleName = clazz.getSimpleName() + "." + key + "." + suffix;
      }
      if (log.isLoggable(Level.FINE)) {
         log.fine("found default " + simpleName + ": " + Arrays.toString(settings.get(simpleName)));
      }
      return simpleName;
   }

   /**
    * compares two arrays
    * @param o
    * @param p
    * @return the boolean 
    */

}