Clojure 如何使用enum/ref的实体id执行Datomic事务?
我正试图将一个新实体插入到我的Datomic数据库中,其中引用了我创建的枚举/引用类型(Clojure 如何使用enum/ref的实体id执行Datomic事务?,clojure,enums,ref,datomic,Clojure,Enums,Ref,Datomic,我正试图将一个新实体插入到我的Datomic数据库中,其中引用了我创建的枚举/引用类型(:client/gender和:client/reference) :client/reference类型的模式条目如下所示(并且:client/gender定义几乎相同): transaction函数看起来像这样(我已经尝试过它的各种变体): 此特定变化会产生以下错误: java.util.concurrent.ExecutionException: java.lang.IllegalArgumentExc
:client/gender
和:client/reference
)
:client/reference
类型的模式条目如下所示(并且:client/gender
定义几乎相同):
transaction函数看起来像这样(我已经尝试过它的各种变体):
此特定变化会产生以下错误:
java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: :db.error/not-an-entity Unable to resolve entity: 17592186045422 in datom [#db/id[:db.part/user -1000022] :client/gender "17592186045422"]
...
Caused by: datomic.impl.Exceptions$IllegalArgumentExceptionInfo: :db.error/not-an-entity Unable to resolve entity: 17592186045422 in datom [#db/id[:db.part/user -1000022] :client/gender "17592186045422"]
error.clj:57 datomic.error/arg
error.clj:55 datomic.error/arg
db.clj:555 datomic.db/require-id
db.clj:2334 datomic.db/datomic.db.ProcessInpoint
db.clj:2317 datomic.db/datomic.db.ProcessInpoint
db.clj:2512 datomic.db/with-tx[fn]
PersistentVector.java:333 clojure.lang.PersistentVector.reduce
core.clj:6518 clojure.core/reduce
db.clj:2512 datomic.db/with-tx[fn]
db.clj:2516 datomic.db/with-tx
peer.clj:558 datomic.peer.LocalConnection/fn
peer.clj:558 datomic.peer/datomic.peer.LocalConnection
peer.clj:550 datomic.peer/datomic.peer.LocalConnection
api.clj:94 datomic.api/transact
...
我也尝试过这样的变化(除其他外),但没有任何效果:
@(d/transact conn
[{:db/id (d/tempid :db.part/user)
:client/name (:name client)
:client/phone (:phone client)
:client/email (:email client)
:client/date-of-birth (:dateOfBirth client)
:client/gender #db/id[:db.user/part gender]
:client/referral #db/id[:db.user/part referral]}])
我缺少了什么,可能很明显的东西?我切换到使用:db/ident作为引用类型,它解决了这个问题
@(d/transact conn
[{:db/id (d/tempid :db.part/user)
:client/name (:name client)
:client/phone (:phone client)
:client/email (:email client)
:client/date-of-birth (:dateOfBirth client)
:client/gender {:db/ident (:gender client)}
:client/referral {:db/ident (:referral client)}}])
您的输入数据是错误源。观察抛出异常中报告的datom值位置的字符串 [#db/id[:db.part/user-1000022]:客户/性别“17592186045422”] 它应该是性别实体的实体ID,或者是通过:db/ident对其进行标识的关键字 确保您的事务的内容如下:
[:db/add (d/tempid :db.part/user) :client/gender :gender/male]
(假设您的实体具有:db/ident:gender/male
)
(旁注:我相信您的头像Clojure徽标是受版权保护的)您偶然发现的解决方案实际上并没有解决潜在的错误。把它当作是被接受的是误导。引用“值位置中的字符串”的答案提供了正确的分析。在我看来,这是Datomic将事务请求扩展为DATOM的方式中的一个错误,我也被同样的问题所困扰。至少提供的答案提供了一个解决方法。
@(d/transact conn
[{:db/id (d/tempid :db.part/user)
:client/name (:name client)
:client/phone (:phone client)
:client/email (:email client)
:client/date-of-birth (:dateOfBirth client)
:client/gender {:db/ident (:gender client)}
:client/referral {:db/ident (:referral client)}}])
[:db/add (d/tempid :db.part/user) :client/gender :gender/male]