/*
    * Copyright 2004-2025 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.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.scope.StatementScope;
  
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * DataExchange implementation for Map objects.
   */
  public class MapDataExchange extends BaseDataExchange implements DataExchange {
  
    /**
     * Instantiates a new map data exchange.
     *
     * @param dataExchangeFactory
     *          the data exchange factory
     */
    protected MapDataExchange(DataExchangeFactory dataExchangeFactory) {
      super(dataExchangeFactory);
    }
  
    @Override
    public void initialize(Map properties) {
    }
  
    @Override
    public Object[] getData(StatementScope statementScope, ParameterMap parameterMap, Object parameterObject) {
      if (!(parameterObject instanceof Map)) {
        throw new RuntimeException("Error.  Object passed into MapDataExchange was not an instance of Map.");
      }
  
      Object[] data = new Object[parameterMap.getParameterMappings().length];
      Map map = (Map) parameterObject;
      ParameterMapping[] mappings = parameterMap.getParameterMappings();
      for (int i = 0; i < mappings.length; i++) {
        data[i] = map.get(mappings[i].getPropertyName());
      }
      return data;
    }
  
    @Override
    public Object setData(StatementScope statementScope, ResultMap resultMap, Object resultObject, Object[] values) {
      if (resultObject != null && !(resultObject instanceof Map)) {
        throw new RuntimeException("Error.  Object passed into MapDataExchange was not an instance of Map.");
      }
  
      Map map = (Map) resultObject;
      if (map == null) {
        map = new HashMap<>();
      }
  
      ResultMapping[] mappings = resultMap.getResultMappings();
      for (int i = 0; i < mappings.length; i++) {
        map.put(mappings[i].getPropertyName(), values[i]);
      }
  
      return map;
    }
  
    @Override
    public Object setData(StatementScope statementScope, ParameterMap parameterMap, Object parameterObject,
        Object[] values) {
      if (parameterObject != null && !(parameterObject instanceof Map)) {
        throw new RuntimeException("Error.  Object passed into MapDataExchange was not an instance of Map.");
      }
  
      Map map = (Map) parameterObject;
      if (map == null) {
        map = new HashMap<>();
      }
  
      ParameterMapping[] mappings = parameterMap.getParameterMappings();
      for (int i = 0; i < mappings.length; i++) {
        if (mappings[i].isOutputAllowed()) {
          map.put(mappings[i].getPropertyName(), values[i]);
        }
      }
  
      return map;
   }
 
 }