Examples of org.eweb4j.orm.dao.DAO

org.eweb4j.orm.dao.DAO

这是一个通用的非常灵活的数据库操作接口。使用方法：

  1.先实例化DAO接口，默认实现类是@see org.eweb4j.orm.dao.DAOImpl 2.DAO dao = DAOFactory.getDAOImpl({TargetEntityClass},{dsName}); 3.dao.clear() 4.dao.xxx().toSql()这种是输出拼凑好的sql语句。 5.dao.xxx().execute()这种是执行sql语句，一般用于添加、修改、删除语句 6.dao.xxx().query()这种是执行sql语句，不过是查询语句，返回多个结果 7.dao.xxx().queryOne()这种是查询单个结果 8.dao.xxx()可以多种多样的操作，每个方法返回都是DAO自己，可以执行链式的编程。 9.dao.selectAll().field("id").equal(3).query() = select * from table where id = '3' 
 
@version 1.8
@since JDK 1.5
@author weiwei




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147     return t;
  }


  public Query find() {
    Class<?> clazz = getClass();
    DAO dao = DAOFactory.getDAO(clazz, dsName);
    dao.selectAll();
    Query _query = new QueryImpl(dao);


    return _query;
  }

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157     return _query;
  }


  public Query find(String query, Object... params) {
    Class<?> clazz = getClass();
    DAO dao = DAOFactory.getDAO(clazz, dsName);


    dao.selectAll().where().append(query).fillArgs(params);
    Query _query = new QueryImpl(dao);


    return _query;
  }

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66     // }
  }
  
  @Test
  public void testDAO(){
    DAO dao = DAOFactory.getDAO(Pet.class);
    List<Pet> pets = dao.clear().selectAll().query(1,4);
    System.out.println(pets);
  }

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Related Classes of org.eweb4j.orm.dao.DAO

org.eweb4j.orm.Model
test.dao.DAOTest



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