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Apache-2.0

sqli 简单的SQL拼写

http://sqli.xream.io

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WIKI

sqli/sqli-builder
sqli/sqli-core
sqli/sqli-dialect
sqli/sqli-repo

sqli-repo

使用方法

sqli仅仅是SQL的编程接口,需要整合到已有的框架或项目中,
在io.xream.x7项目里实现了和Spring-Boot/Spring-JdbcTemplate的整合

@EnableX7Repostory  // code at x7/x7-spring-boot-starter
public class App{
    main() 
    ....
}
    <dependency>
         <groupId>io.xream.x7</groupId>
         <artifactId>x7-spring-boot-starter</artifactId>
         ....
    </dependency>
更多代码片段:

@Repository
public interface FooRepository extends BaseRepository<Foo> {}
@Repository
public interface BarRepository extends RepositoryX {}

@X.Mapping("t_foo")//默认是foo
public class Foo {
    @X.Key //不指定主键的情况下,不支持根据get(id),remove(id)
    private Long id;
    @X.Mapping("full_name") //默认是fullName
    private String fullName;
}

@Service
public class FooServiceImpl implements FooService {

    @Autowired
    private FooRepository fooRepository;
    @Autowired
    private FooFindRepository fooFindRepository;
    
    // 临时表, 原生SQL, 则直接注入, 不支持代理
    @Autowired
    private TemporaryRepository temporaryRepository;
    @Autowired
    private NativeRepository nativeRepository;

BaseRepository API

        1. in(property, inList) //in查询, 例如: 页面上需要的主表ID或记录已经查出后,补充查询其他表的文本说明数据时使用
        2. list(Object) //对象查列表
        3. find(q) //标准拼接查询,返回对象形式记录,返回分页对象
        4. list(q) //标准拼接查询,返回对象形式记录,不返回分页对象
        5. get(Id) //根据主键查询记录
        6. getOne(Object) //数据库只有一条记录时,就返回那条记录
        7. list() //无条件查全表, 几乎没使用场景
        8. creaet(Object) //插入一条, 不支持返回自增键, 框架自带ID生成器
        9. createBatch(List<Object>) //批量插入
        10. refresh( qr) //根据主键更新
        11. refreshUnSafe( qr)//不根据主键更新
        12. remove(Id)//根据主键删除
        13. removeRefreshCreate(RemoveRefreshCreate<T>) //编辑页面列表时写数据库

RepositoryX API

        14. find(xq) //标准拼接查询,返回Map形式记录,返回分页对象
        15. list(xq) //标准拼接查询,返回Map形式记录,不返回分页对象
        16. listPlainValue(Class<K>, qx)//返回没有key的单列数据列表 (结果优化1)
        17. findToHandle(xq, RowHandler<Map<String,Object>>) //流处理API

QueryBuilder拼接API

    QB // 返回q, 查出对象形式记录
    QB.X //xq, 查出Map形式记录,支持连表查询
    QrB //构建要更新的字段和条件
    
    代码片段:
        {
            QB qb = QB.of(Order.class); 
            qb.eq("userId",obj.getUserId()).eq("status","PAID");
            Q q = qb.build();
            orderRepository.find(q);
        }
    
        {
            QB.X qbx =  QB.x();
            qbx.resultKey("o.id");
            qbx.eq("o.status","PAID");
            qbx.and(sub -> sub.gt("o.createAt",obj.getStartTime()).lt("o.createAt",obj.getEndTime()));
            qbx.or(sub -> sub.eq("o.test",obj.getTest()).or().eq("i.test",obj.getTest()));
            qbx.from("FROM order o INNER JOIN orderItem i ON i.orderId = o.id");
            qbx.paged(obj);
            Q.X xq = qbx.build();
            orderRepository.find(xq);
        }
        
        {
            orderRepository.refresh(
                QrB.of(Order.class).refresh("status","PAYING").eq("id",1).eq("status","UN_PAID").build()
            );
        }
    
    条件构建API  (QB | QB.X)
        1. or(sub) // or(sql)
        2. or() // OR
        3. eq // = (eq, 以及其它的API, 值为null,不会被拼接到SQL)
        4. ne // !=
        5. gt // >
        6. gte // >=
        7. lt // <
        8. lte // <=
        9. like //like %xxx%, if likeLeftRight => xxx, likeLeft => xxx%, then like => %xxx%
        10. likeLeft // like xxx%
        11. notLike // not like %xxx%
        12. in // in
        13. nin // not in
        14. isNull // is null
        15. nonNull // is not null
        16. x // 简单的手写sql片段, 例如 x("foo.amount = bar.price * bar.qty") , x("item.quantity = 0")
        17. sub(sql, sub) //
        18. and(sub)

    MAP查询结果构建API  (QB.X)
        19. distinct //去重
        20. reduce //归并计算
                // .reduce(ReduceType.SUM, "dogTest.petId") 
                // .reduce(ReduceType.SUM, "dogTest.petId", Having.of(Op.GT, 1))
                //含Having接口 (仅仅在reduc查询后,有限支持Having)
        21. groupBy //分组
        22. select //指定返回列
        23. selectWithFunc //返回列函数支持
                // .selectWithFunc(ResultKeyAlia.of("o","at"),"FFF(o.createAt, ?)", 100000) 
        24. resultWithDottedKey //连表查询返回非JSON格式数据,map的key包含"."  (结果优化2)
       
    连表构建API  (QB.X)
        25. from(joinSql) //简单的连表SQL,不支持LEFT JOIN  ON 多条件; 多条件,请用API[28]
        26. fromBuilder.of(Order.class).alia("o") //连表里的主表, API: .fromX(FromX fromX)
        27. fromBuilder.JOIN(LEFT).of(OrderItem.class).alia("i")
                                          .on("i.orderId = o.id", 
        28                  on -> on.gt(...)) //LEFT JOIN等, 更多条件
        29. fromBuilder.sub(....) // INNER JOIN (....) i  有限支持clickhouse等数据库
                        .alia("i").JOIN("ANY INNER JOIN").on(....) //fluent构建连表sql
    
    分页及排序API  (QB | QB.X)
        30. sort("o.id", Direction.DESC)
        31. paged(pb -> pb.ignoreTotalRows().page(1).rows(10).last(10000)) //设置last(long),会忽略page(int); 
                                       
    更新构建API  ( qr)
        32. refresh
        
    框架优化
        froms/fromBuilder
            如果条件和返回都不包括sourceScript里的连表,框架会优化移除连接(但目标连接表有用时,中间表不会
            被移除)。
            关闭优化: qb.withoutOptimization()
        in
            每500个条件会切割出一次in查询
        
    不支持项
        union // 过于复杂

二级缓存

在x7项目里实现了springBoot的Enable
    
@EnableX7L2Caching
public class App{
    main()

二级缓存是基于redis.multiGet的高速缓存实现。

二级缓存建议返回记录条数不超过20条。调用带二级缓存的API,返回记录条数超过了
20条,请关闭二级缓存。
如果需要开启二级缓存,所有对数据库的写操作项目都需要开启二级缓存。

支持二级缓存的BaseRepository的API:
        1. in(property, inList)
        2. list(Object)
        3. find(q)
        4. list(q)
        5. get(Id)
        6. getOne(Object)
    
不支持二级缓存的BaseRepository, RepositoryX的API:
        1. list()
        2. findX(xq)
        3. listX(xq)
        4. listPlainValue(xq)
    
以上设计意味着,如果in和list查询返回记录条数超过20条, 二级缓存
会失去高速响应的效果,请务必关闭二级缓存. 
如果需要返回很多条记录,需要自定义返回列, 请使用:
    findX(xq)
    listX(xq)
    listPlainValue(xq)
    
用户级的过滤
{
    CacheFilter.filter(userId);
    this.orderRepository.create(order); // refresh and remove
}

{
    CacheFilter.filter(userId);
    this.orderRepository.find(q);
}
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简介

orm sql interface, Criteria, CriteriaBuilder, ResultMapBuilder. Topics: orm jdbc mysql clickhouse impala presto xream 展开 收起
Java
Apache-2.0
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