NC开发前后台数据库操作的用法

后台数据库操作方法(private端):

以下为后台查询方法

//只能在private端使用
BaseDAO bd = new BaseDAO();

//查询语句只能返回一行一列结果
String sql="select vbillcode from conn_user where pk_user='pk'";
Object result = bd.executeQuery(sql, new ColumnProcessor());

//查询语句可以返回多行多列
String sql="select * from conn_user where dr = 0";
List<Object[]> result = (List<Object[]>) bd.executeQuery(sql, new ArrayListProcessor());   

//查询语句只返回一行结果
String sql="select * from conn_user where pk_user='pk'";
Map<String, Object> result = (Map<String, Object>) bd.executeQuery(sql, new MapProcessor());

//查询语句可以返回多行结果  
String sql="select * from conn_user where dr = 0";
List<Map<String,String>> result = (List<Map<String, String>>) bd.executeQuery(sql, new MapListProcessor());

//查询语句只返回一个VO
String sql="select * from conn_user where pk_user='pk'";
UserVO result =  (UserVO) bd.executeQuery(sql, new BeanProcessor(UserVO.class));

//查询语句返回多个VO
String sql="select * from conn_user where dr = 0";
List<UserVO> result = (List<UserVO>) bd.executeQuery(sql,new BeanListProcessor(UserVO.class));

以下为新增更新删除方法(手写sql)

bd.executeUpdate(sql);

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前台数据库操作方法(client端):

前台提供两个主要接口进行CURD操作:

IVOPersistence  该接口只支持前台增删改操作  
IUAPQueryBS   该接口主要支持前台的查询操作

//processor跟第一点的basedao用法一致
IUAPQueryBS bs = NCLocator.getInstance().lookup(IUAPQueryBS.class);
bs.executeQuery(sql, processor);

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常用查询操作方法:

//后台通过主表主键查询AggVO
 BillQuery<AggUserVO> bq = new BillQuery<>(AggUserVO.class);
 bq.query(pk);

//前台通过主表主键查询AggVO
HYPubBO_Client.queryBillVOByPrimaryKey(AggUserVO.class, pk)

//前后台都能用
IBillQueryService bq = NCLocator.getInstance().lookup(IBillQueryService.class);

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