/*
    * Copyright 2004-2023 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.client.SqlMapException;
  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.Map;
  
  import javax.xml.parsers.DocumentBuilderFactory;
  import javax.xml.parsers.ParserConfigurationException;
  
  import org.w3c.dom.Document;
  
  /**
   * A DataExchange implemtation for working with DOM objects.
   */
  public class DomDataExchange extends BaseDataExchange implements DataExchange {
  
    /**
     * Constructor for the factory.
     *
     * @param dataExchangeFactory
     *          - the factory
     */
    public DomDataExchange(DataExchangeFactory dataExchangeFactory) {
      super(dataExchangeFactory);
    }
  
    public void initialize(Map properties) {
    }
  
    public Object[] getData(StatementScope statementScope, ParameterMap parameterMap, Object parameterObject) {
      Probe probe = ProbeFactory.getProbe(parameterObject);
  
      ParameterMapping[] mappings = parameterMap.getParameterMappings();
      Object[] values = new Object[mappings.length];
  
      for (int i = 0; i < mappings.length; i++) {
        values[i] = probe.getObject(parameterObject, mappings[i].getPropertyName());
      }
  
      return values;
    }
  
    public Object setData(StatementScope statementScope, ResultMap resultMap, Object resultObject, Object[] values) {
  
      String name = ((ResultMap) resultMap).getXmlName();
      if (name == null) {
        name = "result";
      }
  
      if (resultObject == null) {
        try {
          Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
          doc.appendChild(doc.createElement(name));
          resultObject = doc;
        } catch (ParserConfigurationException e) {
          throw new SqlMapException("Error creating new Document for DOM result.  Cause: " + e, e);
        }
      }
  
      Probe probe = ProbeFactory.getProbe(resultObject);
  
      ResultMapping[] mappings = resultMap.getResultMappings();
  
      for (int i = 0; i < mappings.length; i++) {
        if (values[i] != null) {
          probe.setObject(resultObject, mappings[i].getPropertyName(), values[i]);
        }
      }
  
      return resultObject;
    }
  
    public Object setData(StatementScope statementScope, ParameterMap parameterMap, Object parameterObject,
        Object[] values) {
      Probe probe = ProbeFactory.getProbe(parameterObject);
  
      ParameterMapping[] mappings = parameterMap.getParameterMappings();
 
     for (int i = 0; i < mappings.length; i++) {
       if (values[i] != null) {
         if (mappings[i].isOutputAllowed()) {
           probe.setObject(parameterObject, mappings[i].getPropertyName(), values[i]);
         }
       }
     }
 
     return parameterObject;
   }
 
 }