package com.github.mygreen.supercsv.builder;
   
   import java.lang.reflect.Constructor;
   import java.lang.reflect.Modifier;
   import java.util.Objects;
   
   import org.supercsv.exception.SuperCsvReflectionException;
   import org.supercsv.util.BeanInterfaceProxy;
   
  
  /**
   * Beanのインスタンスを生成する標準のクラス。
   *
   * @version 2.2
   * @since 2.0
   * @author T.TSUCHIE
   *
   */
  public class DefaultBeanFactory implements BeanFactory<Class<?>, Object> {
  
      @Override
      public Object create(final Class<?> clazz) {
          Objects.requireNonNull(clazz, "clazz should not be null.");
  
          try {
              if(clazz.isInterface()) {
                  return BeanInterfaceProxy.createProxy(clazz);
  
              } else {
  
                  final Class<?> declaredClass = clazz.getDeclaringClass();
  
                  if(declaredClass != null && !Modifier.isStatic(clazz.getModifiers())) {
                      // 非staticな内部クラスの場合
                      Constructor<?> cons = clazz.getDeclaredConstructor(declaredClass);
                      cons.setAccessible(true);
                      return cons.newInstance((Object)null);
                  }
  
                  Constructor<?> cons = clazz.getDeclaredConstructor();
                  cons.setAccessible(true);
                  return cons.newInstance();
  
              }
          } catch (ReflectiveOperationException  e) {
              throw new SuperCsvReflectionException(String.format("fail create Bean instance of '%s'", clazz.getName()), e);
          }
      }
  }