content: package act.inject.param;
  
  /*-
   * #%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 act.Act;
  import act.data.Sensitive;
  import act.util.ActContext;
  import act.validation.Password;
  import org.osgl.$;
  import org.osgl.Lang;
  import org.osgl.inject.InjectException;
  import org.osgl.util.S;
  
  import java.lang.reflect.Field;
  
  /**
   * Load instance loaded by {@link ParamValueLoader} into {@link java.lang.reflect.Field}
   */
  class FieldLoader {
      private final Field field;
      private final Class<?> fieldType;
      private final boolean isString;
      private final ParamValueLoader loader;
      private final ParamValueLoader stringValueLoader;
      private final boolean isSensitive;
      private final boolean isPassword;
      private Lang.TypeConverter<Object, Object> converter;
  
      FieldLoader(Field field, ParamValueLoader loader, ParamValueLoader stringValueLoader, Lang.TypeConverter<Object, Object> converter) {
          Class<?> type = field.getType();
          boolean isString = String.class == type;
          boolean isCharArray = char[].class == type;
          this.isString = isString;
          this.isSensitive = isString && null != field.getAnnotation(Sensitive.class);
          this.isPassword = (isString || isCharArray) && null != field.getAnnotation(Password.class);
          this.field = field;
          this.fieldType = type;
          this.loader = $.requireNotNull(loader);
          this.stringValueLoader = stringValueLoader;
          this.converter = converter;
      }
  
      FieldLoader(Field field, ParamValueLoader loader) {
          this(field, loader, null, null);
      }
  
      public void applyTo($.Func0<Object> beanSource, ActContext context) {
          Object fieldValue = loader.load(null, context, true);
          if (null == fieldValue && null != converter) {
              // try converter
              Object o = stringValueLoader.load(null, context, true);
              if (null != o) {
                  fieldValue = converter.convert(o);
              }
          }
          // #429 ensure POJO instance get initialized
          if (null == fieldValue) {
              // counter effect to #429 - We don't want to leave an empty reference for JPA model entities
              //beanSource.apply();
              // #689 initialize field if it is an array or a container
              if (fieldType.isArray()) {
                  return;
              }
              return;
          }
          try {
              if (isSensitive) {
                  fieldValue = Act.crypto().encrypt((String)fieldValue);
              } else if (isPassword) {
                  if (isString) {
                      fieldValue = Act.crypto().passwordHash((String) fieldValue);
                  } else {
                      char[] ca = $.convert(fieldValue).to(char[].class);
                      fieldValue = Act.crypto().passwordHash(ca);
                  }
              }
              Object bean = beanSource.apply();
              field.set(bean, fieldValue);
          } catch (Exception e) {
              throw new InjectException(e);
          }
      }
  
      @Override
      public String toString() {
          return S.concat("field loader|", loader);
      }
  }
  