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a java development framework with aggregation, repository and process

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package arp.repository.copy;

import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;

import arp.util.Unsafe;

public class HashMapFieldCopier extends BaseFieldCopier {

	public HashMapFieldCopier(Field field) {
		super(field);
	}

	@Override
	public void copyField(Object fromEntity, Object toEntity) {
		HashMap map = (HashMap) Unsafe.getObjectFieldOfObject(fromEntity,
				fieldOffset);
		HashMap copiedMap = new HashMap(map.size());
		Iterator i = map.entrySet().iterator();
		while (i.hasNext()) {
			Entry e = i.next();
			copiedMap.put(e.getKey(), EntityCopier.copy(e.getValue()));
		}
		Unsafe.setObjectFieldOfObject(toEntity, fieldOffset, copiedMap);
	}
}