testcustomhashmapconverter.java

一个javabean的转换与copy非常的好用希望大家好好研究一下

/*
 * Copyright 2005-2007 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
 *
 *      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.
 */
package net.sf.dozer.util.mapping.converters;

import java.util.HashMap;

import net.sf.dozer.util.mapping.MappingException;
import net.sf.dozer.util.mapping.vo.TestCustomConverterHashMapObject;
import net.sf.dozer.util.mapping.vo.TestCustomConverterHashMapPrimeObject;
import net.sf.dozer.util.mapping.vo.TestObject;
import net.sf.dozer.util.mapping.vo.TestObjectPrime;

/**
 * @author garsombke.franz
 */
public class TestCustomHashMapConverter implements CustomConverter {

  public Object convert(Object destination, Object source, Class destClass, Class sourceClass) {

    if (source instanceof TestCustomConverterHashMapObject) {
      TestCustomConverterHashMapPrimeObject dest = null;
      TestCustomConverterHashMapObject testCustomConverterHashMapObject = (TestCustomConverterHashMapObject) source;
      if (destination == null) {
        dest = new TestCustomConverterHashMapPrimeObject();
      } else {
        dest = (TestCustomConverterHashMapPrimeObject) destination;
      }
      HashMap map = new HashMap();
      map.put("object1", testCustomConverterHashMapObject.getTestObject());
      map.put("object2", testCustomConverterHashMapObject.getTestObjectPrime());
      dest.setTestObjects(map);
      return dest;
    } else if (source instanceof TestCustomConverterHashMapPrimeObject) {
      TestCustomConverterHashMapObject dest = null;

      TestCustomConverterHashMapPrimeObject testCustomConverterHashMapPrimeObject = (TestCustomConverterHashMapPrimeObject) source;
      if (destination == null) {
        dest = new TestCustomConverterHashMapObject();
      } else {
        dest = (TestCustomConverterHashMapObject) destination;
      }
      dest.setTestObject((TestObject) testCustomConverterHashMapPrimeObject.getTestObjects().get("object1"));
      dest.setTestObjectPrime((TestObjectPrime) testCustomConverterHashMapPrimeObject.getTestObjects().get("object2"));
      return dest;
    } else {
      throw new MappingException("Converter TestCustomHashMapConverter used incorrectly. Arguments passed in were:"
          + destination + " and " + source);
    }
  }

}