content: package act.app.util;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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 org.osgl.$;
  import org.osgl.util.C;
  
  import java.lang.reflect.Type;
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.util.Map;
  
  /**
   * Some simple type does not have default constructor, e.g. Integer etc.
   * Let's put their factory method here.
   *
   * Note only Immutable simple type supported
   */
  public class SimpleTypeInstanceFactory {
      private static Map<Class, Object> prototypes = C.Map(
              Boolean.class, Boolean.FALSE,
              boolean.class, Boolean.FALSE,
              Character.class, '\0',
              char.class, '\0',
              Byte.class, 0,
              byte.class, 0,
              Short.class, 0,
              short.class, 0,
              Integer.class, 0,
              int.class, 0,
              Float.class, 0F,
              float.class, 0F,
              Long.class, 0L,
              long.class, 0L,
              Double.class, 0D,
              double.class, 0D,
              BigInteger.class, BigInteger.valueOf(0L),
              BigDecimal.class, BigDecimal.valueOf(0L),
              String.class, ""
      );
  
      public static boolean isSimpleType(Type type) {
          return prototypes.containsKey(type);
      }
  
      public static <T> T newInstance(Class<T> c) {
          return $.cast(prototypes.get(c));
      }
  }
  