content: package com.airhacks.enhydrator.transform;
  
  import com.airhacks.enhydrator.flexpipe.RowTransformation;
  import com.airhacks.enhydrator.in.Column;
  import com.airhacks.enhydrator.in.Row;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Objects;
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlRootElement;
  
  /*
   * #%L
   * enhydrator
   * %%
   * Copyright (C) 2014 Adam Bien
   * %%
   * 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%
   */
  /**
   *
   * @author airhacks.com
   */
  @XmlAccessorType(XmlAccessType.FIELD)
  @XmlRootElement(name = "datatype-name-mapper")
  public class DatatypeNameMapper extends RowTransformation {
  
      private Map<String, Datatype> mappings;
  
      public DatatypeNameMapper() {
          this.mappings = new HashMap<>();
      }
  
      @Override
      public Row execute(Row input) {
          if (input == null) {
              return null;
          }
          this.mappings.entrySet().forEach(e -> changeDataType(input.getColumnByName(e.getKey()), e.getValue()));
          return input;
      }
  
      void changeDataType(Column column, Datatype mapping) {
          if (column == null) {
              return;
          }
          switch (mapping) {
              case DOUBLE:
                  column.convertToDouble();
                  break;
              case INTEGER:
                  column.convertToInteger();
                  break;
              case BOOLEAN:
                  column.convertToBoolean();
                  break;
          }
      }
  
      public DatatypeNameMapper addMapping(String name, Datatype mapping) {
          this.mappings.put(name, mapping);
          return this;
      }
  
      @Override
      public int hashCode() {
          int hash = 3;
          hash = 83 * hash + Objects.hashCode(this.mappings);
          return hash;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (obj == null) {
              return false;
          }
          if (getClass() != obj.getClass()) {
              return false;
          }
          final DatatypeNameMapper other = (DatatypeNameMapper) obj;
          if (!Objects.equals(this.mappings, other.mappings)) {
              return false;
          }
          return true;
      }
  
  }
  