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输入图片说明

写在前面

这里陆续写几篇文章大概做一些对这个框架的介绍,包含一些实例。

打算主要介绍框架里面自己封装的ORM框架(基于对象关系映射的数据库访问框架)代号“TURBO”(涡轮增压),因为他是系统的内核,所以就想用发动机来起名。后面会陆续分享框架里面对权限验证、单点登录,监控,传输等组件。

最新的代码做了模块化拆分,同时将项目中其他用到的组件也提交上来了,感兴趣可以下载围观。地址:https://gitee.com/base100/turbo.git

整套ORM基于springjdbc封装,利用java反射机制实现,这里有同学会问,外面已经有hibernate,MyBatis这些牛逼的框架了你还封装个毛线。

初衷是啥

1、受不了hibernate,MyBatis太多的xml配置,就想能不配置就不配置。这种思想也一直延续到自己做产品,简单就是美。

2、由于自己曾经是orale的dba,所以就自己控制底层拼装sql,为未来的优化留后门,不想啥都让hibernate和mybatis做了,还是透明的方式,无法在底层插入自己的优化手段。

3、想用对象查询用对象查询,想写sql写sql,想混合就混合。

4、为了适应自己的前端框架,使得mvc各层对接更加轻量级,让各种什么PO,BO,VO,DTO,POJO来回转换都见鬼去吧。

5、多数据源的无缝切换,0代码修改。首先配置要尽可能的少,第二是底层要适配各种数据库的常用语法。

6、多个数据源的支持更简单。

7、可动态创建数据源。

8、mvc能不能不要DAO层。

9、方便对接自己写的各种分表分区查询啥的。

10、(50%的初衷)当初年少轻狂,也没女票,对代码爱的痴狂,半夜2点还在撸代码,觉得有必要写一个展示一下自己的能力。

11、头发重要。

下面就从实际例子来介绍一下这个ORM吧。

整个ORM目前已经适配数据库包括:Oracle、Mysql、SQLserver、Postgresql,可扩展支持及其数据库。

本文打算按以下流程来介绍,着重第三部分:

1.数据源配置;2.对象关系配置;3.增删改查,事务操作、多数据源、动态创建数据源支撑等操作实例。

1、数据源配置

可以同时配置多个数据源,驱动也不用配置(底层直接根据链接查找不同数据库的驱动名),那种万年不变的老驱动,还天天配置个啥,一到配置的时候小伙子们就各种查百度。

#默认数据库配置

db.default.url=jdbc:mysql://localhost:3306/test

db.default.username=root

db.default.password=root

db.default.initPoolSize=5

db.default.maxPoolSize=5

db.default.schema=test

#第二个数据源(可无限多个),下面的v2代表第二个数据源的别名,可以自定义,实际操作中用到。

db.v2.url=jdbc:postgresql://10.237.33.127:5432/test

db.v2.username=test

db.v2.password=123456

db.v2.initPoolSize=5

db.v2.maxPoolSize=5

2、对象关系配置和注入;

我们内部将整个支持MVC三层的对象统一叫做VO,没有绝对的标准。采用注解(annotation)的方式,但已经尽量简化了。后面介绍,mvc各层就一个,可作为前端对象接收表单传值,也可根据annotation配置直接入库。

举个栗子。

先建个表吧!

为了表示这个框架支撑各种字段的能力,所以建了几个不同数据类型的字段。如:字符,CLOB,BLOB,时间戳啥的。

DROP TABLE IF EXISTS `t_user`;

CREATE TABLE `t_user` (

  `id` char(32) DEFAULT '' COMMENT '用户id',

  `name` varchar(255) DEFAULT NULL COMMENT '用户名',

  `email` varchar(255) DEFAULT NULL COMMENT '邮箱',

  `head_sculpture` blob COMMENT '头像图片',

  `resume` longtext COMMENT '简历',

  `ts` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP COMMENT '时间戳'

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

看看vo的注解吧(简书的排版简直让人抓狂,ε=(´ο`*))),不支持插入代码,为了好看这里及截图了,后面get和set我省略了,实际是有的)。

下图中可以看到,只要是和数据库字段名相同的属性都不用注释。不向数据库插入,但是用来接收前端表单数据的属性用@WsdNotDbColumn标注即可。

@WsdTable(name="T_USER")
public class UserVo extends ModuleFeatureBean{
  
    /**
     * 用户id
     */
    @WsdColumn(isId=true)
	private String id;
	/**
	 * 用户名
	 */
    private String name;
    
    /**
     * 用户邮箱
     */
    private String email;
    
    /**
     * 简历
     */
    @WsdColumn(type=TYPE.CLOB)
    private String  resume;
    /**
     * 头像图片
     */
    @WsdColumn(type=TYPE.BLOB,name="head_sculpture")
    private byte[] headSculpture;
    
    /**
     * 时间戳
     */
    private Date ts;
    
    /**
     * 接收界面传递的值用于server的属性,不往数据库插入
     */
    @WsdNotDbColumn
    private String token;

这里看一下封装的annotation吧,和ORM相关的也就2个,如下:

1)表的注解(wsdTable):

@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface WsdTable {

	/**
	 * 此表在数据的schema名称
	 * @return
	 */
	 String schema()default "";
	/**
	 * 表名称
	 * @return
	 */
	String name() default "";
	/**
	 * 是否sharding 分表 需要在class-path 的名为table_sharding.xml里面查找和当前表名对应的分区配置
	 * @return
	 */
	boolean sharding() default false;
	
}

2)字段注解(WsdColumn关键注解)

这里面定义了不同数据库字段类型的映射关系,以方便一个别名适配各种数据库的类型。

例如NUMBER,可映射到("number","int","tinyint","decimal","float","double","bigint","numeric"),代表不同数据库相同类型的别名。

@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface WsdColumn {
	/**
	 * 字段名
	 * @return
	 */
	String name() default "";
	/**
	 * 如果使用@see _DEFAULT值,将会使用Field的类型
	 * @return
	 */
	TYPE type() default TYPE._DEFAULT;	
	boolean isId() default false;
	boolean UUID() default false;
    enum TYPE{
    	_DEFAULT,
    	NUMBER(Integer.class,Long.class,Double.class,int.class,double.class,long.class),
    	TIMESTEMP(Date.class),
    	VARCHAR2(String.class),
    	BLOB(byte[].class),
    	CLOB(String.class);
    	
    	private TYPE(){
    		this.equalClazz = new Class<?>[]{};
    	}
    	private Class<?>[] equalClazz;
    	private TYPE(Class<?>... equalClazz){
    		this.equalClazz = equalClazz;
    	}
    	public Class<?>[] getequalClazz(){
    		return equalClazz;
    	}
    }
    /**
     * 数据库字段分组
     * @author 公众号:18岁fantasy
     * @2014-11-21 @下午7:53:24
     */
    public static enum DB_TYPE_GROUP{
    	NUMBER("number","int","tinyint","decimal","float","double","bigint","numeric"),
    	TIMESTAMP("timestamp","timestamp with local time zone","timestamp with time zone"),
    	DATE("date","datetime","time"),
    	STR("varchar2","varchar","char","nvarchar2","nvarchar"),
    	BLOB("blob"),
    	CLOB("clob","ntext","text","longtext");
    	private String[] dbType;
    	DB_TYPE_GROUP(String... dbType){
    		this.dbType = dbType;
    	}
		public String[] getDbType() {
			return dbType;
		}

3、配置启动扫描。

这里要说一下,框架设计了一个引擎启动的配置文件,里面会配置要扫描的VO对象的位置,多个要扫描的包用竖线隔开几个。

这样项目启动的时候就会对这些包进行扫描,并将所有扫描到的VO的元数据存入内容中或者缓存服务中。具体过程大家有兴趣可查看源码。


<BootParam>
	<!-- 要扫描的实体包 -->
	<modulePackage>
		<package>com.zlxd.*|core.*</package>
	</modulePackage>
	<!-- Spring初始化之前的监听器 -->
	<beforeSpringListener>
	</beforeSpringListener>
	<!-- Spring初始化之后的监听器 -->
	<afterSpringListener>
	</afterSpringListener>
	<!-- 拦截器按顺序执行 -->
	<interceptors>
	</interceptors>
</BootParam>

扫描的类似产考spring源码自己写的。具体类名为:ModuleParser。大家可以自己看。

4、各种数据操作

从曾删改查、事务操作、多数据源、非spring环境使用进行示例说明。

以下示例都可在类DaoTest里,可查看源码。 ** 已经封装数据库操作常用方法列表** 输入图片说明

4.1插入操作 如果对于小型项目,我们一般不写DAO层。直接在service层通过CM,CM为服务获取入口类(当然服务也可以用用spring注入的方式)。

1)对象Insert

这里和常用的框架类似。

/**
   * 测试插入对象
   */
  @Test
  public void testInsert() {
    try {
      UserVo u = new UserVo();
      u.setId(UUIDGenerator.getUUID());
      u.setName("n_n");
      u.setEmail("email@163.com");
      u.setHeadSculpture(FileUtil.readFileToByteArray(new File("d:\\hp.png")));
      u.setResume("简历内容");
      u.setTs(new Date());
      CM.getDao().insertModule("测试插入对象", u);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

2)批量插入

  @Test
  public void testBatchInsert() throws IOException {
    try {
      List<UserVo> users = new ArrayList<UserVo>();
      for (int i = 0; i < 50; i++) {
        UserVo u = new UserVo();
        u.setId(UUIDGenerator.getUUID());
        u.setName("n_" + i);
        u.setEmail("email@" + i + ".com");
        u.setHeadSculpture(FileUtil.readFileToByteArray(new File("d:\\hp.png")));
        u.setResume("简历内容" + i);
        u.setTs(new Date());
        users.add(u);
      }
      CM.getDao().batchInsertModule("测试批量插入对象", users);
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

4.2查询操作 1)列表查询

@Test
  public void testListModule() {
    try {

      List<UserVo> users = CM.getDao().listModule("测试基于对象查询列表", UserVo.class, null);
      CollectionUtil.printCollection(users);
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

2)根据id查询

  @Test
  public void testGetById() {
    try {

      String[] idValuds = {"3f1d35b12ab544fdb73badc750e534e2"};
      UserVo user = CM.getDao().getModuleById("根据id获取对象", UserVo.class, idValuds);
      FileUtil.writeByteArrayToFile(new File("d:\\hp2.png"), user.getHeadSculpture());
      System.out.println(user);

    } catch (Exception e) {
      e.printStackTrace();
    }
  }

3)条件查询

所有的条件组合封装在了WhereCondition这个类中,采用链式封装,操作非常简洁。

  @Test
  public void listModuleByWhereCondition() {
    try {
      WhereCondition condition = new WhereCondition();
      condition.where().eq("name", "n_21");
      List<UserVo> users = CM.getDao().listModule("测试查询", UserVo.class, condition);
      CollectionUtil.printCollection(users);
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

3)多条件组合查询

WhereCondition封装了对所有sql基本语法的支撑,如:

=、!= 、>、>=、<、<= 、 like、not like 、between and 、in 、 and、 or 、EXISTS 、NOT EXISTS、 IS NULL、 IS NOT NULL;

  @Test
  public void listModuleByMultWhereCondition() {
    try {
      WhereCondition condition = new WhereCondition();
      condition.where1Eq1().andLike("email", "%email%")
          .andGreaterThanOrEq("ts", "2019-5-8 11:08:43").and().isNotNull("resume");
      List<UserVo> users = CM.getDao().listModule("测试查询", UserVo.class, condition);
      CollectionUtil.printCollection(users);
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

4)根据sql查询,返回对象列表

  @Test
  public void listModuleBySql() {
    try {
      WhereCondition condition = new WhereCondition();
      condition.where().greaterThanOrEq("ts", "2019-5-8 14:08:43");
      List<UserVo> users =
          CM.getDao().listModule("测试查询", "select * from t_user  ", UserVo.class, condition);
      CollectionUtil.printCollection(users);
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

5)分页查询

分页主要看Pager这个类,大家可以查看源码。

  @Test
  public void listPaginationModule() {
    try {
      WhereCondition condition = new WhereCondition();
      condition.where().greaterThanOrEq("ts", "2019-5-8 14:08:43");
      Pager pager = new Pager(0, 10);
      PagerData<UserVo> users =
          CM.getDao().getPagerModuleList("测试分页查询", UserVo.class, condition, pager);
      System.out.println("总条数:" + users.getTotal());
      CollectionUtil.printCollection(users.getRows());
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

分页主要看Pager这个对象。 4.3修改操作 根据id修改

  @Test
  public void testUpdateById() {
    try {
      UserVo user = new UserVo();
      user.setId("3cccc60b170848b1a53e3db9d519bd48");
      user.setName("new_name");
      
      CM.getDao().updateModuleById("测试根据id更新", user, new String[] {"headSculpture"});//可设置哪些字段不更新
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

自动排除值为空的属性。 ` @Test public void updateModuleByIdExecuteNull() { try { UserVo user = new UserVo(); user.setId("bc17b776523241479354f6a4e6a2e26e"); user.setName("new_name");

  CM.getDao().updateModuleByIdExecuteNull("测试根据id更新不包含值为空的对象", user);
} catch (DaoException e) {
  e.printStackTrace();
}

}`

手动设置哪些字段不更新 @Test public void saveOrUpdateModuleById() { try { UserVo user = new UserVo(); user.setId("bc17b776523241479354f6a4e6a2e261"); user.setName("new_name");

  CM.getDao().saveOrUpdateModuleById("save or update", user, new String[] {"headSculpture"});
} catch (DaoException e) {
  e.printStackTrace();
}

} 2)根据条件批量修改

  @Test
  public void testBatchUpdate() {
    try {
      UserVo user = new UserVo();
      user.setName("new_name");
      
      WhereCondition condition = new WhereCondition();
      condition.where().lessThan("Ts", "2019-05-08 15:47:11");
      
      CM.getDao().updateModule("测试删除", user, condition, new String[] {"headSculpture"});//可设置哪些字段不更新
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

4.5 SaveOrUpdate 根据数据库是否有着id来判断新增还是插入。

  @Test
  public void saveOrUpdateModuleById() {
    try {
      UserVo user = new UserVo();
      user.setId("bc17b776523241479354f6a4e6a2e261");
      user.setName("new_name");
      
      CM.getDao().saveOrUpdateModuleById("save or update", user, new String[] {"headSculpture"});
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

4.4删除操作 条件删除

  @Test
  public void testDelete() {
    WhereCondition condition = new WhereCondition();
    condition.where().isNotNull("ts").andBetween("ts",
        new BetweenValue("2019-5-8 11:17:51", "2019-5-8 16:17:51", true, true));
    try {
      CM.getDao().deleteModule("测试删除", UserVo.class, condition);
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

2)根据id删除

  @Test
  public void testDeleteById() {
    try {
      CM.getDao().deleteModuleById("测试删除", UserVo.class,
          new Object[] {"06e773fb69404bf7b64a156bada11846"});
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

4.5事务操作 在一个事务中执行多个ddl操作。

  @Test
  public void doInSingleTransationCircle() {
    try {
     
      UserVo user = new UserVo();
      user.setId("bc17b776423241479354f6a4e6a2e261");
      user.setName("new_name");
      
      Dao dao =  CM.getDao();
      
      CM.getDao().doInSingleTransationCircle("事务操作", new SingleTransationCircleWithOutResult() {
        
        @Override
        public void actionInCircle() throws RuntimeException {
          try {
            dao.insertModule("插入", user);
            
            user.setEmail("email@1.1");
            WhereCondition condition = new WhereCondition();
            condition.where().lessThan("Ts", "2019-05-08 15:47:11");
            dao.updateModule("修改", user, condition);
            
            dao.deleteModuleById("删除", user);
          } catch (DaoException e) {
            throw new RuntimeException(e);
          }
        }
      });
      
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

4.6多数据源操作 1.首先需提前在配置文件中配置多数据源信息。配置很简单,个支持多个。如下:

#默认数据库配置 
db.default.url=jdbc:mysql://localhost:3306/test
db.default.username=root
db.default.password=root
db.default.initPoolSize=5
db.default.maxPoolSize=5
db.default.schema=test

#其他数据源
db.pg.url=jdbc:postgresql://10.237.33.127:5432/test
db.pg.username=test
db.pg.password=123456
db.pg.initPoolSize=5
db.pg.maxPoolSize=5

2.在CM中定义。

public class CM extends CmCommon{


  private static final String PG_DBNAME = "pg";
  /**
   * 获另外的的数据源操作类
   */
  public static Dao getPGDao() {
    
    return getDao(PG_DBNAME);
    
  }
}

3.然后就可以直接调用了

  @Test
  public void multDataSource() {
    try {
     
      //默认数据源
      CM.getDao().listModule("测试基于对象查询列表", UserVo.class, null);
      //另外的数据源
      CM.getPGDao().listModule("测试基于对象查询列表", UserVo.class, null);
      
    } catch (DaoException e) {
      e.printStackTrace();
    }
  }

4.7动态创建数据源 主要用在通过界面添加数据源的情况,比如动态添加一个数据库对其进行定时监控,或者ETL中的数据源动态配置


  /**
   * 可在非spring环境下使用各种方法。常用场景如,比如要动态添加一个对数据库对其进行监控
   */
  public static void main(String[] args) throws Exception {
    
    //数据源参数
    DataSourceProperty dataSourceProperty = new DataSourceProperty();
    dataSourceProperty.setJdbcUrl("jdbc:mysql://localhost:3306/test");
    dataSourceProperty.setUsername("root");
    dataSourceProperty.setPassword("root");
    dataSourceProperty.setInitialSize(1);
    dataSourceProperty.setMaxActive(1);
    
    Dao dmDao = DaoFactory.createDao("动态数据源数据源", dataSourceProperty);
    List<Map<String, Object>> users = dmDao.listMap("查询", "select *  from t_user where ts<?", new Object[] {"2019-5-8 15:08:43"});
    CollectionUtil.printCollection(users);
  }

~~以上便是对本框架中ORMd的介绍。

大家可以从指定git地址上把代码pull下来,按步骤测试。

老司机再次共勉。祭奠写代码折腾框架的日子。也欢迎关注。公众号,duomi88,欢迎关注!

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Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.) These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it. Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely by you; rather, the intent is to exercise the right to control the distribution of derivative or collective works based on the Program. In addition, mere aggregation of another work not based on the Program with the Program (or with a work based on the Program) on a volume of a storage or distribution medium does not bring the other work under the scope of this License. 3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.) The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable. If distribution of executable or object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code. 4. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance. 5. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute the Program or its derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. 7. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program. If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances. It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice. This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. 8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. <one line to give the program's name and a brief idea of what it does.> Copyright (C) <year> <name of author> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. <signature of Ty Coon>, 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License.

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基于Sping JDBC封装的ORM框架,仅供学习。个人公众号“duomi88” ,会写一些关于产品、研发的一些心得分享,欢迎关注。最新代码维护地址:https://gitee.com/base100/turbo.git。 展开 收起
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