IdentityRack.java

package clear.transaction.identity;
import java.util.HashMap;
import java.util.Map;

public class IdentityRack  {
	private static ThreadLocal<Map<String, Object>>	s_tlsEntityMap	= new ThreadLocal<Map<String, Object>>() {
		protected synchronized Map<String, Object> initialValue() {
			return new HashMap<String, Object>();
		}
	};

	public static Object getIdentity(	String domain,
		String property,
		Object oldValue) {
		Map<String, Object> map = s_tlsEntityMap.get();
		String key = domain + "_" + property + "_" + oldValue;
		Object newValue = map.get(key);
		return (newValue == null) ? oldValue : newValue;
	}
	
	public static void setIdentity(	String domain,
		String property,
		Object oldValue,
		Object newValue) {
		String key = domain + "_" + property + "_" + oldValue;
		Map<String, Object> map = s_tlsEntityMap.get();
		map.put(key, newValue);
	}

}