dao

使用IntelliJ IDEA创建Maven聚合工程、创建resources文件夹、ssm框架整合、项目运行一体化

由 荒凉一梦 提交于 2019-12-13 16:34:21
一、创建一个空的项目作为存放整个项目的路径 1、选择 File——>new——>Project ——>Empty Project 2、WorkspaceforTest为项目存放文件夹。 二、maven继承：创建父-子项目，聚合工程 比如整个项目。以一个项目来演示。 |--e3-parent：父工程，打包方式pom，管理jar包的版本号。项目中所有工程都应该继承父工程。 　　|--e3-common：通用的工具类通用的pojo。打包方式jar 　　|--e3-manager：服务层工程。聚合工程。Pom工程 　　　　|--e3-manager-dao：打包方式jar 　　　　|--e3-manager-pojo：打包方式jar 　　　　|--e3-manager-interface：打包方式jar 　　　　|--e3-manager-service：打包方式：jar 　　　|--e3-manager-web：表现层工程。打包方式war 1、创建maven父工程 e3-parent File——>New ——>Module.. ——>Maven 2、GroupId一般为公司域名倒过来写。ArtifactId写工程名字。 3、Maven home directory 在这里我选择自己安装的maven，还有User settings file 选择好本地仓库。 4、注意下e3

Node.js Express : How to redirect page after processing post request?

由 纵然是瞬间 提交于 2019-12-13 14:25:30
问题 How to redirect to different page from post request ? module.exports = function(app) { app.post('/createStation', function(request, response){ response.redirect('/'); //This doesn't work, why and how to make this work /*var stationDao = require('./server/stationDao.js'); stationDao.stationDao.createStation(request.body, function(status){ if(status.status == 'successful'){ response.redirect('/'); //This is what actually I wanted to do }*/ }); }); }; Tried using next() as well, app.post('

How to use jndi datasource in dao?

由 て烟熏妆下的殇ゞ 提交于 2019-12-13 05:12:56
问题 I'm trying to do my first web project using tomcat, jsp, servlets and log4j. I have TO like: User, Subject, Faculty etc, and DAO objects like: UserRepository, SubjectRepository, FacultyRepository etc. With repositories I have the following hierarchy (not all entities placed): The initialization of DataSource in AbstractRepository goes this way: public abstract class AbstractRepository<T> implements Repository<T> { private final static Logger LOG = Logger .getLogger(AbstractRepository.class);

How to insert into a snowflake variant field using a DAO?

由 ▼魔方 西西 提交于 2019-12-13 03:30:14
问题 I have the following code: @RegisterMapper(MyEntity.ResultMapper.class) @UseStringTemplate3StatementLocator public interface MyDao { @Transaction(TransactionIsolationLevel.SERIALIZABLE) @SqlBatch("INSERT INTO mySchema.myTable (" + " id, entity_type, entity_id, flags " + " ) VALUES " + "(" + " :stepId , :entityType , :entityId,parse_json(:flags) " + ")") @BatchChunkSize(500) Object create( @BindBean List<MyEntity> entities ); } As you can see, I am bulk inserting a list of entities into my

What is the name of the violating unique index constraint in dao / ms-access

由 余生颓废 提交于 2019-12-13 02:16:01
问题 I am trying to insert a record into a table with DAO (within MS-Access) and doing so, I receive an Error 3022 (which indicates that a unique index is violated). The error is correct since in fact the tried-to-insert record has a value which is already found in the table. Now, I'd like to find out the name of the violated unique index. Does someone have a clue how I'd get this? Thanks for any pointer René 回答1: Here are some notes: Sub WithADO() ''Reference: Microsoft ADO Ext x.x For DLL and

Jersey constructor with parameters

由 妖精的绣舞 提交于 2019-12-12 23:13:07
问题 I want to use a DAO in my RESTful service developed with Jersey, so the DAO implementation should be injected via the constructor of the service: @Path("eventscheduler) public class EventSchedulerService { private IEventSchedulerDao dao; public EventSchedulerService(IEventSchedulerDao dao) { this.dao = dao; } } However, I know Jersey expects a default constructor to setup everything correctly. I have been trying to figure out how to do this for a while but surprisingly this seems to be an

How do a assign a GUID to a DAO parameter in VBA

由 醉酒当歌 提交于 2019-12-12 20:31:23
问题 I have a piece of code that boils down to dim stmt as dao.queryDef dim parId as dao.parameter set stmt = currentDB().createQueryDef("", _ "parameters id guid, ...; insert into tab (id, ... ) values ([id], ...)") I created the table with create table tab ( id guid, ... ) and alter table tab add constraint tab_pk primary key (id) Later, I want to assign a GUID to parId : parId.value = GuidFromString("{936DA01F-9ABD-4D9D-80C7-02AF85C822A8}") This assignment causes a Run-time error 3421 : Data

Is it fine to have several DAOs?

由 倖福魔咒の 提交于 2019-12-12 19:18:23
问题 Let's say I have one database with two tables: companies and employees . Should I create companyDAO and employeeDAO If I select, update, add and remove from those two tables? Or I should create one DAO in which I'll write methods for CRUD operations for every table in the database? 回答1: Yes, it makes sense to have separate DAO s for most of the entities. Often times you'll work with generified DAO s, i.e. you have an abstract super class. In a simplified example, it could look like this:

Why extremely occasionally will one of bof/eof be true for a new non-empty recordset

由 强颜欢笑 提交于 2019-12-12 17:49:38
问题 set recordsetname = databasename.openrecordset(SQLString) if recordsetname.bof <> true and recordsetname.eof <> true then 'do something end if 2 questions : the above test can evaluate to false incorrectly but only extremely rarely (I've had one lurking in my code and it failed today, I believe for the first time in 5 years of daily use-that's how I found it). Why very occasionally will one of bof/eof be true for a non-empty recordset. It seems so rare that I wonder why it occurs at all. Is

Mockito : How to test my Dao with mocking?

由 痴心易碎 提交于 2019-12-12 13:53:05
问题 I am newbie to junit and TDD. I am planning to use Mockito to test my dao. Dao Interface: package com.test.SpringApp.dao; import java.util.List; import com.test.SpringApp.bean.Account; import com.test.SpringApp.bean.Person; public interface TestDao { List<Account> getAccountDetails(int account_id); Person getPersonDetails(int person_id); } DaoImpl Class Code: package com.test.SpringApp.dao; import java.util.ArrayList; import java.util.List; import javax.sql.DataSource; import org.apache.log4j
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