1: ……
2: public class U9102 implements ContactDAO {
3: public List<Contact> listContacts() {
4: PersistenceManager pm = getPersistenceManagerFactory().getPersistenceManager();
5: String query = "select from " + Contact.class.getName();
6: try {
7: Properties props = new Properties();
8: String fileName = "contacts.txt";
9: FileInputStream in = new FileInputStream(fileName);
10: if( in != null ) { props.load(in); }
11: in.close();
12: // 외부로 부터 입력을 받는다
13: String name = props.getProperty("name");
14: if( name != null ) {
15: query += " where name = '" + name + " '" ;
16: }
17: } catch (IOException e) { …… }
18:
19: // 와부 입력값이 JDO 객체의 인자로 사용된다.
20: return (List<Contact>) pm.newQuery(query).execute();
21: }
22: ……