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¥¸¥§¥Í¥ê¥Ã¥¯¡¦¥×¥í¥°¥é¥ß¥ó¥° ¤È JPA

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public class GenericsImpl<T> {
private Class<T> type;

public Generics(Class<T> type){
this.type = type;
}
public T getXXXX() {
return (T) ¥¯¥é¥¹T¤òÊÖ¤¹½èÍý;
}
}

<»ÈÍÑÎã1>
public class TestMain {
public static void main(String args[]){
GenericsImpl<String> obj = new GenericsImpl<String>
String str = obj.getXXXX();
}
}

<»ÈÍÑÎã2>
public class TestMain {
public static void main(String args[]){
GenericsImpl<Long> obj = new GenericsImpl Long lng = obj.getXXXX();
}
}



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/**
* GenericDao¤Î¥¤¥ó¥¿¥Õ¥§¡¼¥¹
*/
package dao.generic;

import java.io.Serializable;
import java.util.List;

import javax.persistence.LockModeType;

/**
* ¥¸¥§¥Í¥ê¥Ã¥¯¤ò»ÈÍѤ·¤¿CRUDÁàºî¤Î¥¤¥ó¥¿¥Õ¥§¡¼¥¹
* @author forplus
*
*/
public interface GenericDao<T, PK extends Serializable> {

/**
* CreateÁàºî
* @param newInstance¡¡±Ê³²½ÂоÝPOJO
* @return ±Ê³²½POJO
*/
T create(T newInstance);

/**
* ReadÁàºî
* @param id¡¡¥­¡¼¾ðÊó
* @return ±Ê³²½POJO
*/
T read(PK id);

/**
* ReadÁàºî(ÃÙ±ä¥í¡¼¥Ç¥£¥ó¥°)
* @param id¡¡¥­¡¼¾ðÊó
* @return ±Ê³²½POJO¤Ø¤Î¥ª¥Ö¥¸¥§¥¯¥È»²¾È¤òÊÖ¤¹
*/
T getReference(PK id);

/**
* ReadÁàºî(¥í¥Ã¥¯¤¢¤ê)
* @param id¡¡¥­¡¼¾ðÊó
* @param lockModeType¡¡¥í¥Ã¥¯¥¿¥¤¥×
* @return ±Ê³²½POJO
*/
T read(PK id, LockModeType lockModeType);

/**
* ReadÁàºî(ÃÙ±ä¥í¡¼¥Ç¥£¥ó¥°,¡¡¥í¥Ã¥¯¤¢¤ê)
* @param id¡¡¥­¡¼¾ðÊó
* @param lockModeType¡¡¥í¥Ã¥¯¥¿¥¤¥×
* @return ±Ê³²½POJO¤Ø¤Î¥ª¥Ö¥¸¥§¥¯¥È»²¾È¤òÊÖ¤¹
*/
T getReference(PK id, LockModeType lockModeType);

/**
* UpdateÁàºî
* @param transientObject¡¡¹¹¿·ÂоÝPOJO
*/
void update(T transientObject);

/**
* DeleteÁàºî
* @param persistentObject¡¡ºï½üÂоÝPOJO
*/
void delete(T persistentObject);

/**
* Á´¤Æ¤ÎPOJO¤ò¼èÆÀ¤¹¤ë
* @return ±Ê³²½POJO¤Î¥ê¥¹¥È
*/
List<T> findAll();

/**
* »ØÄêÈϰϤǼèÆÀ¤¹¤ë
* @param firstResult ¼èÆÀ°ÌÃÖ
* @param maxResults ¼èÆÀºÇÂç¿ô
* @return¡¡±Ê³²½POJO¤Î¥ê¥¹¥È
*/
List<T> findRange(int firstResult, int maxResults);

/**
* ±Ê³²½POJO¤Î¥í¥Ã¥¯
* @param persistentObject¡¡±Ê³²½POJO
* @param lockModeType
*/
void lock(T persistentObject, LockModeType lockModeType);

/**
* ¥¨¥ó¥Æ¥£¥Æ¥£¤¬±Ê³¥³¥ó¥Æ¥­¥¹¥È¤Ë´ÉÍý¤µ¤ì¤Æ¤¤¤ë¤«È½Äꤹ¤ë¡¥
* @param persistentObject ȽÄêÂоÝPOJO
* @return ȽÄê·ë²Ì
*/
boolean contains(T persistentObject);

/**
* ±Ê³²½POJO¤ÎºÆ¼èÆÀ
* @param persistentObject¡¡±Ê³²½POJO
*/
void refresh(T persistentObject);
}


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