/*
    * Copyright 2004-2022 the original author or authors.
    *
    * 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
    *
    *    https://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.
   */
  package com.ibatis.sqlmap.engine.exchange;
  
  import com.ibatis.common.beans.Probe;
  import com.ibatis.common.beans.ProbeFactory;
  import com.ibatis.sqlmap.engine.mapping.parameter.ParameterMap;
  import com.ibatis.sqlmap.engine.mapping.parameter.ParameterMapping;
  import com.ibatis.sqlmap.engine.mapping.result.ResultMap;
  import com.ibatis.sqlmap.engine.mapping.result.ResultMapping;
  import com.ibatis.sqlmap.engine.mapping.result.ResultObjectFactoryUtil;
  import com.ibatis.sqlmap.engine.scope.StatementScope;
  import com.ibatis.sqlmap.engine.type.TypeHandlerFactory;
  
  import java.util.Map;
  
  /**
   * A DataExchange implemtation for working with beans.
   */
  public class ComplexDataExchange extends BaseDataExchange implements DataExchange {
  
    /** The Constant PROBE. */
    private static final Probe PROBE = ProbeFactory.getProbe();
  
    /**
     * Constructor for the factory.
     *
     * @param dataExchangeFactory
     *          - the factory
     */
    public ComplexDataExchange(DataExchangeFactory dataExchangeFactory) {
      super(dataExchangeFactory);
    }
  
    public void initialize(Map properties) {
    }
  
    public Object[] getData(StatementScope statementScope, ParameterMap parameterMap, Object parameterObject) {
      TypeHandlerFactory typeHandlerFactory = getDataExchangeFactory().getTypeHandlerFactory();
      if (parameterObject == null) {
        return new Object[1];
      } else {
        if (typeHandlerFactory.hasTypeHandler(parameterObject.getClass())) {
          ParameterMapping[] mappings = parameterMap.getParameterMappings();
          Object[] data = new Object[mappings.length];
          for (int i = 0; i < mappings.length; i++) {
            data[i] = parameterObject;
          }
          return data;
        } else {
          Object[] data = new Object[parameterMap.getParameterMappings().length];
          ParameterMapping[] mappings = parameterMap.getParameterMappings();
          for (int i = 0; i < mappings.length; i++) {
            data[i] = PROBE.getObject(parameterObject, mappings[i].getPropertyName());
          }
          return data;
        }
      }
    }
  
    public Object setData(StatementScope statementScope, ResultMap resultMap, Object resultObject, Object[] values) {
      TypeHandlerFactory typeHandlerFactory = getDataExchangeFactory().getTypeHandlerFactory();
      if (typeHandlerFactory.hasTypeHandler(resultMap.getResultClass())) {
        return values[0];
      } else {
        Object object = resultObject;
        if (object == null) {
          try {
            object = ResultObjectFactoryUtil.createObjectThroughFactory(resultMap.getResultClass());
          } catch (Exception e) {
            throw new RuntimeException("JavaBeansDataExchange could not instantiate result class.  Cause: " + e, e);
          }
        }
        ResultMapping[] mappings = resultMap.getResultMappings();
        for (int i = 0; i < mappings.length; i++) {
          PROBE.setObject(object, mappings[i].getPropertyName(), values[i]);
        }
        return object;
      }
    }
  
    public Object setData(StatementScope statementScope, ParameterMap parameterMap, Object parameterObject,
        Object[] values) {
      TypeHandlerFactory typeHandlerFactory = getDataExchangeFactory().getTypeHandlerFactory();
      if (typeHandlerFactory.hasTypeHandler(parameterMap.getParameterClass())) {
        return values[0];
     } else {
       Object object = parameterObject;
       if (object == null) {
         try {
           object = ResultObjectFactoryUtil.createObjectThroughFactory(parameterMap.getParameterClass());
         } catch (Exception e) {
           throw new RuntimeException("JavaBeansDataExchange could not instantiate result class.  Cause: " + e, e);
         }
       }
       ParameterMapping[] mappings = parameterMap.getParameterMappings();
       for (int i = 0; i < mappings.length; i++) {
         if (mappings[i].isOutputAllowed()) {
           PROBE.setObject(object, mappings[i].getPropertyName(), values[i]);
         }
       }
       return object;
     }
   }
 
 }