#Yet Another Zeratul
Yet Another Zeratul(YAZ) is a new version of Zeratul.
YAZ provides a fundamental BaseDao, with convenient method for querying.
##Usage
Maven dependency:
<dependency>
<groupId>com.exmertec.yaz</groupId>
<artifactId>yaz</artifactId>
<version>0.06</version>
<type>jar</type>
<scope>compile</scope>
</dependency>To use it just:
public class UserDao extends BaseDao<User> {
public UserDao() {
super(User.class);
}
@PersistenceContext
public void injectEntityManager(EntityManager entityManager) {
super.setEntityManager(entityManager);
}
public List<User> findUserByName(String key) {
return where(field("name").like(key), field("status").ne(DISABLED)).queryList();
}
}To make it easier, it's recommended to add a BaseDaoWrapper in your project:
public abstract class BaseDaoWrapper<T> extends BaseDao<T> {
protected BaseDaoWrapper(Class<T> prototype) {
super(prototype);
}
@PersistenceContext
public void injectEntityManager(EntityManager entityManager) {
super.setEntityManager(entityManager);
}
}
public class UserDao extends BaseDaoWrapper<User> {
public UserDao() {
super(User.class);
}
public List<User> findUserByName(String key) {
return where(field("name").like(key), field("status").ne(DISABLED)).queryList();
}
}Or if you're trying to use DDD repository pattern:
public class UserDao extends BaseDaoWrapper<User> {
public UserDao() {
super(User.class);
}
}
public class UserRepository extends BaseRepository<User> {
private UserDao userDao;
public User find(String userId) {
return userDao.idEquals(userId).querySingle();
}
}Please refer to the test source code, which shows how to use different query methods provided by YAZ.