Android - Realm (ORM, Database)

 

ORM: 객체 관계 매핑(Object-relational mapping).
객체 지향 프로그래밍 언어 데이터와 데이터베이스 데이터간 변환하는 프로그래밍 기법.

 

 

 

VO 정의

public class Test1Vo extends RealmObject {
	public String Title1;
}

 

database 읽고 쓰기

		Realm.init(this);
		Realm rm = Realm.getDefaultInstance();

		final String title1 = "tt";

		rm.executeTransaction(new Realm.Transaction() {
			@Override
			public void execute(Realm realm) {
				Test1Vo vo = realm.createObject(Test1Vo.class);
				vo.Title1 = title1;
			}
		});

		RealmQuery<Test1Vo> rq = rm.where(Test1Vo.class).equalTo("Title1", "tt");
		Test1Vo vo1 = rq.findFirst();
		String st1 = vo1.Title1;
		//vo1.deleteFromRealm(); //delete data
		RealmResults<Test1Vo> vs1 = rq.findAllSorted("Title1", Sort.DESCENDING);
		rm.delete(Test1Vo.class); //delete all Test1Vo data

 

RealmT2.zip

0.36MB