sorms简易 ORM 框架
简易ORM框架
此框架主要为在使用Spring框架的以下用户考虑:
喜欢JPA注解,但讨厌hibernate和spring data jpa效率低下的.同时又不想失去sql灵活性的.
喜欢Mybatis的直接,但对mybatis的易用性和可维护性提出质疑的.
此框架在hibernate和mybatis做了折中,并且执行性能超过两者.
此框架主要基于ef-orm框架理念
使用jpa注解,但不完全实现jpa规范,单表增,删,改比较方便,同时对级联也做了支持,但不实现延迟加载功能,必须手动调用,才能加载级联对象(此处主要降低jpa实现复杂度).
jpa支持注解如下: @Column,@Table,@Entity,@Id,@OneToOne,@OneToMany,@ManyToMany,@ManyToOne.@JoinColumn,@JoinTable,@Version
使用了代码增强技术,增强了实体类.需要继承DBObject类.并使用配置实现代码增强.继承DBObject类的java bean 只要调用set方法即可精确修改数据库对象.
支持级联配置
支持Map格式的数据对象返回.
支持使用模板写sql,主要使用jetbrick-template实现.
支持对象操作的乐观锁功能.
支持实体对象生成功能
不支持一级,二级缓存(Spring cache已经足够好)
整合支持querydsl,jooq用法,提高系统可维护性.能降低80%~90%的sql硬编码.极大提高系统的可维护性.
支持mybatis的resultMap,但无需编写xml,只需使用@Column注解和数据库字段映射即可,对于一条sql语句对应一个主类带子类对象,使用@OneToOne注解标记即可实现主类、子类的组装.
此框架为整合性框架,感谢ef-orm,jfinal,BeetlSQL,Nutz,mybatis,jetbrick-orm
快速预览
spring 环境下
@Bean
public OrmConfig getOrmConfig(DaoTemplate dt) {
OrmConfig config = new OrmConfig();
config.setPackagesToScan(StringUtils.split("db.domain",","));
config.setDbClient(dt);
config.setUseTail(true);
config.setFastBeanMethod(false);
config.init();
return config;
}
@Bean(name="daoTemplate")
public DaoTemplate geDaoTemplate(DataSource ds) {
DaoTemplate dt = new DaoTemplate(ds);
return dt;
}
spring boot直接配置 application.properties中配置
#jpa实体类所在的包 smallorm.packages=db.domain ...
spring boot中的main方法启动中加入增强的代码
public static void main(String[] args) throws Exception {
//jpa实体类所在的包
new EntityEnhancerJavassist().enhance("db.domain");
SpringApplication.run(SefApplication.class, args);
}
引入spring-boot-jdbc-starter
3.编写jpa实体类
package db.domain;
import sf.database.DBCascadeField;
import sf.database.DBField;
import sf.database.annotations.Comment;
import sf.database.annotations.FetchDBField;
import sf.database.annotations.Type;
import sf.database.jdbc.extension.ObjectJsonMapping;
import sf.database.DBObject;
import javax.persistence.*;
import java.math.BigDecimal;
import java.util.*;
@Entity
@Table(name = "wp_users")
@Comment("用户表")
public class User extends DBObject {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@Column(name = "login_name", length = 60, nullable = false)
private String loginName;// 登陆名
@Column(length = 64)
private String password;
@Column(length = 50)
private String nicename;
@Column(length = 100)
private String email;
@Column(length = 100)
private String url;
@Column
@Temporal(TemporalType.TIMESTAMP)
private Date registered;
/**
* 激活码
*/
@Column(name = "activation_key", length = 60, nullable = false)
private String activationKey;
@Column
private int status;
@Column(name = "display_name", length = 250)
@Enumerated(EnumType.STRING)
private Names displayName;
@Column
private Boolean spam;
@Column
private boolean deleted;
@Column(precision = 10,scale = 5)
private BigDecimal weight;
@Transient
private boolean lock;
@Column(name = "maps",length = 1500)
@Type(ObjectJsonMapping.class)
private Map<String,String> maps;
@ManyToMany
@Transient
@OrderBy("id asc,role desc")
@JoinTable(name = "user_role", joinColumns = {
@JoinColumn(name = "user_id", referencedColumnName = "id")}, inverseJoinColumns = {
@JoinColumn(name = "role_id", referencedColumnName = "id")})
private List<Role> roles;
@OrderBy
@Transient
@FetchDBField({"id","key"})
@OneToMany(targetEntity = UserMeta.class)
@JoinColumn(name = "id", referencedColumnName = "userId")
private Set<UserMeta> userMetaSet = new LinkedHashSet<UserMeta>();
public enum Names {
zhangshang, lisi
}
/**
* 普通字段
*/
public enum Field implements DBField {
id, loginName, password, nicename, email, url, registered, activationKey, status, displayName,maps, spam, deleted,weight;
}
/**
* 级联字段
*/
public enum CascadeField implements DBCascadeField {
roles, userMetaSet
}
public User() {
}
... get set方法
}
在dao中引入
@Resource private DaoTemplate dt;
以daoTemplate操作sql方法.
插入对象
User user = dt.selectOne(new User());
User u = new User();
u.setLoginName(UUID.randomUUID().toString());
u.setDeleted(false);
u.setCreated(new Date());
u.setActivationKey("23k4j2k3j4i234j23j4");
//插入对象,生成的语句为:insert into wp_users(activation_key,created,deleted,login_name) values(?,?,?,?)
int i = dt.insert(u);
执行原生sql
String sql = "select * from wp_users"; List<User> list = dt.selectList(User.class, sql);
执行模板sql
#tag loadSql("queryUserByName")
#[[
select * from wp_users
#tag where()
#if(id)
and id=${p(id)}
#end
#if(username)
and login_name=${p(username)}
#end
#if(nicename)
and nicename=${p(nicename)}
#end
#end
]]#
#end
java代码
Map<String, Object> query = new HashMap<>();
query.put("id", 1);
List<User> list2 = dt.selectListTemplate(User.class, "queryUserByName", query);
执行Querydsl
SQLRelationalPath<User> q = QueryDSLTables.relationalPathBase(User.class); SQLQuery<User> query = new SQLQuery<User>(); query.select(q).from(q).where(q.string(User.Field.displayName).isNotNull()) .orderBy(new OrderSpecifier<>(Order.ASC, q.column(User.Field.id))); Page<User> page = dt.sqlQueryPage(query, 2, 3);
执行jooq代码
JooqTable<?> quser = JooqTables.getTable(User.class); JooqTable<?> qrole = JooqTables.getTable(Role.class); Select<?> query = DSL.select(quser.fields()).from(quser, qrole).where(quser.column(User.Field.id).eq(1)); User u = dt.jooqSelectOne(query);
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