package org.codehaus.plexus.component.configurator.converters.composite;
   
   /*
    * The MIT License
    *
    * Copyright (c) 2004, The Codehaus
    *
    * Permission is hereby granted, free of charge, to any person obtaining a copy of
    * this software and associated documentation files (the "Software"), to deal in
   * the Software without restriction, including without limitation the rights to
   * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
   * of the Software, and to permit persons to whom the Software is furnished to do
   * so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  import java.lang.reflect.Array;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.codehaus.plexus.component.configurator.ComponentConfigurationException;
  import org.codehaus.plexus.component.configurator.ConfigurationListener;
  import org.codehaus.plexus.component.configurator.converters.AbstractConfigurationConverter;
  import org.codehaus.plexus.component.configurator.converters.ConfigurationConverter;
  import org.codehaus.plexus.component.configurator.converters.lookup.ConverterLookup;
  import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
  import org.codehaus.plexus.configuration.PlexusConfiguration;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * @author <a href="mailto:kenney@codehaus.org">Kenney Westerhof</a>
   */
  public class ArrayConverter extends AbstractConfigurationConverter {
      public boolean canConvert(Class type) {
          return type.isArray();
      }
  
      public Object fromConfiguration(
              ConverterLookup converterLookup,
              PlexusConfiguration configuration,
              Class type,
              Class baseType,
              ClassLoader classLoader,
              ExpressionEvaluator expressionEvaluator,
              ConfigurationListener listener)
              throws ComponentConfigurationException {
          Object retValue = fromExpression(configuration, expressionEvaluator, type);
          if (retValue != null) {
              return retValue;
          }
  
          List values = new ArrayList();
  
          for (int i = 0; i < configuration.getChildCount(); i++) {
              PlexusConfiguration childConfiguration = configuration.getChild(i);
  
              String configEntry = childConfiguration.getName();
  
              String name = fromXML(configEntry);
  
              Class childType = getClassForImplementationHint(null, childConfiguration, classLoader);
  
              // check if the name is a fully qualified classname
  
              if (childType == null && name.indexOf('.') > 0) {
                  try {
                      childType = classLoader.loadClass(name);
                  } catch (ClassNotFoundException e) {
                      // doesn't exist - continue processing
                  }
              }
  
              if (childType == null) {
                  // try to find the class in the package of the baseType
                  // (which is the component being configured)
  
                  String baseTypeName = baseType.getName();
  
                  int lastDot = baseTypeName.lastIndexOf('.');
  
                  String className;
  
                  if (lastDot == -1) {
                      className = name;
                  } else {
                      String basePackage = baseTypeName.substring(0, lastDot);
                      className = basePackage + "." + StringUtils.capitalizeFirstLetter(name);
                  }
  
                 try {
                     childType = classLoader.loadClass(className);
                 } catch (ClassNotFoundException e) {
                     // doesn't exist, continue processing
                 }
             }
 
             // finally just try the component type of the array
 
             if (childType == null) {
                 childType = type.getComponentType();
             }
 
             ConfigurationConverter converter = converterLookup.lookupConverterForType(childType);
 
             Object object = converter.fromConfiguration(
                     converterLookup,
                     childConfiguration,
                     childType,
                     baseType,
                     classLoader,
                     expressionEvaluator,
                     listener);
 
             values.add(object);
         }
 
         try {
             return values.toArray((Object[]) Array.newInstance(type.getComponentType(), 0));
         } catch (ArrayStoreException e) {
             throw new ComponentConfigurationException("Cannot assign configuration values to array of type "
                     + type.getComponentType().getName() + ": " + values);
         }
     }
 }