org.hswebframework.web.crud.query

接口 QueryHelper.JoinSpec<R>

类型参数:

R - 查询结果类型

所有超级接口:

QueryHelper.ExecuteSpec<R>, QueryHelper.SortSpec<R>, QueryHelper.WhereSpec<R>

所有已知子接口:

QueryHelper.FromSpec<R>

封闭接口:

QueryHelper

public static interface QueryHelper.JoinSpec<R>
extends QueryHelper.WhereSpec<R>, QueryHelper.SortSpec<R>

表关联构造器

方法概要

限定符和类型	方法和说明
<T> QueryHelper.JoinSpec<R>	fullJoin(Class<T> type, java.util.function.Consumer<JoinConditionalSpec<?>> on) 对指定的实体类进行 full join // join t1 on t1.id = t2.id fullJoin(DetailEntity.class,spec->spec.is(MyEntity::getId,DetailEntity::getId)
<T> QueryHelper.JoinSpec<R>	innerJoin(Class<T> type, java.util.function.Consumer<JoinConditionalSpec<?>> on) 对指定的实体类进行 inner join // inner join detail on my.id = detail.id innerJoin(DetailEntity.class,spec->spec.is(MyEntity::getId,DetailEntity::getId)
<T> QueryHelper.JoinSpec<R>	leftJoin(Class<T> type, java.util.function.Consumer<JoinConditionalSpec<?>> on) 对指定的实体类进行 left join // left join detail on my.id = detail.id leftJoin(DetailEntity.class,spec->spec.is(MyEntity::getId,DetailEntity::getId)
<T> QueryHelper.JoinSpec<R>	rightJoin(Class<T> type, java.util.function.Consumer<JoinConditionalSpec<?>> on) 对指定的实体类进行 right join // left join detail on my.id = detail.id rightJoin(DetailEntity.class,spec->spec.is(MyEntity::getId,DetailEntity::getId)

从接口继承的方法 org.hswebframework.web.crud.query.QueryHelper.WhereSpec

where, where

从接口继承的方法 org.hswebframework.web.crud.query.QueryHelper.SortSpec

orderBy, orderBy, orderByAsc, orderByAsc, orderByDesc, orderByDesc

从接口继承的方法 org.hswebframework.web.crud.query.QueryHelper.ExecuteSpec

count, fetch, fetchPaged, fetchPaged, fetchPaged, fetchPaged

方法详细资料

leftJoin

<T> QueryHelper.JoinSpec<R> leftJoin(Class<T> type,
                                     java.util.function.Consumer<JoinConditionalSpec<?>> on)

对指定的实体类进行 left join

   // left join detail on my.id = detail.id
   leftJoin(DetailEntity.class,spec->spec.is(MyEntity::getId,DetailEntity::getId)
 

类型参数:

T - T

参数:

type - 实体类型,需要注解Table

on - 关联条件构造器

返回:

表关联构造器

rightJoin

<T> QueryHelper.JoinSpec<R> rightJoin(Class<T> type,
                                      java.util.function.Consumer<JoinConditionalSpec<?>> on)

对指定的实体类进行 right join

   // left join detail on my.id = detail.id
   rightJoin(DetailEntity.class,spec->spec.is(MyEntity::getId,DetailEntity::getId)
 

类型参数:

T - T

参数:

type - 实体类型,需要注解Table

on - 关联条件构造器

返回:

表关联构造器

innerJoin

<T> QueryHelper.JoinSpec<R> innerJoin(Class<T> type,
                                      java.util.function.Consumer<JoinConditionalSpec<?>> on)

对指定的实体类进行 inner join

   // inner join detail on my.id = detail.id
   innerJoin(DetailEntity.class,spec->spec.is(MyEntity::getId,DetailEntity::getId)
 

类型参数:

T - T

参数:

type - 实体类型,需要注解Table

on - 关联条件构造器

返回:

表关联构造器

fullJoin

<T> QueryHelper.JoinSpec<R> fullJoin(Class<T> type,
                                     java.util.function.Consumer<JoinConditionalSpec<?>> on)

对指定的实体类进行 full join

   // join t1 on t1.id = t2.id
   fullJoin(DetailEntity.class,spec->spec.is(MyEntity::getId,DetailEntity::getId)
 

类型参数:

T - T

参数:

type - 实体类型,需要注解Table

on - 关联条件构造器

返回:

表关联构造器