如何插入UUID的值?
How to insert value of UUID?
我在 play framework 2.3 支持的 postgresql 9.4 中使用 anorm 2.4
给出这样的模型:
case class EmailQueue(id:UUID,
send_from:String,
send_to:String,
subject:String,
body:String,
created_date:Date,
is_sent:Boolean,
email_template:String)
这是我的解析器:
val parser: RowParser[EmailQueue] = {
get[UUID]("id") ~
get[String]("send_from") ~
get[String]("send_to") ~
get[String]("subject") ~
get[String]("body") ~
get[Date]("created_date") ~
get[Boolean]("is_sent") ~
get[String]("email_template") map {
case id ~ send_from ~ send_to ~ subject ~ body ~
created_date ~ is_sent ~ email_template=> EmailQueue(id,
send_from,
send_to,
subject,
body,
created_date,
is_sent,
email_template)
}
}
这是我的插入语句:
def insert(email:EmailQueue): Unit ={
DB.withTransaction { implicit c =>
SQL(s"""
INSERT INTO "email_queue" ( "body", "created_date", "id", "is_sent", "send_from", "send_to", "subject", "email_template")
VALUES ( {body}, {created_date}, {id}, {is_sent}, {send_from}, {send_to}, {subject}, {email_template} );
""").on(
"body" -> email.body,
"created_date" -> email.created_date,
"id" -> email.id,
"is_sent" -> email.is_sent,
"send_from" -> email.send_from,
"send_to" -> email.send_to,
"subject" -> email.subject,
"email_template" -> email.email_template
).executeInsert()
}
}
我在插入时收到以下错误:
[error] PSQLException: : ERROR: column "id" is of type uuid but
expression is of type character varying [error] Hint: You will need
to rewrite or cast the expression. [error] Position: 153
(xxxxxxxxxx.java:2270)
数据库 table 是由此查询创建的:
CREATE TABLE email_queue (
id UUID PRIMARY KEY,
send_from VARCHAR(255) NOT NULL,
send_to VARCHAR(255) NOT NULL,
subject VARCHAR(2000) NOT NULL,
body text NOT NULL,
created_date timestamp without time zone DEFAULT now(),
is_sent BOOLEAN NOT NULL DEFAULT FALSE,
email_template VARCHAR(2000) NOT NULL
);
Anorm 与数据库无关,因为 JDBC,因此默认情况下不支持特定于供应商的数据类型。
您可以在语句中使用 {id}::uuid
,这样在 JDBC 参数中作为字符串传递的 java.util.UUID
然后从传递的 VARCHAR
转换为特定的 PostgreSQL uuid
.
Using string interpolation in SQL(s"...")
is not recommanded (SQL injection), but Anorm interpolation can be used.
def insert(email:EmailQueue): Unit = DB.withTransaction { implicit c =>
SQL"""
INSERT INTO "email_queue" ( "body", "created_date", "id", "is_sent", "send_from", "send_to", "subject", "email_template")
VALUES ( ${email.body}, ${email.created_date}, ${email.id}::uuid, ${email.is_sent}, ${email.send_from}, ${email.send_to}, ${email.subject}, ${email.email_template} )
""").executeInsert()
}
Not recommended, but can be useful sometimes for vendor specific type, the anorm.Object
can be used to pass an opaque value as JDBC parameter (there the ::uuid
is nicer for me).
You can also implement a custom ToStatement[java.util.UUID]
.
我在 play framework 2.3 支持的 postgresql 9.4 中使用 anorm 2.4
给出这样的模型:
case class EmailQueue(id:UUID,
send_from:String,
send_to:String,
subject:String,
body:String,
created_date:Date,
is_sent:Boolean,
email_template:String)
这是我的解析器:
val parser: RowParser[EmailQueue] = {
get[UUID]("id") ~
get[String]("send_from") ~
get[String]("send_to") ~
get[String]("subject") ~
get[String]("body") ~
get[Date]("created_date") ~
get[Boolean]("is_sent") ~
get[String]("email_template") map {
case id ~ send_from ~ send_to ~ subject ~ body ~
created_date ~ is_sent ~ email_template=> EmailQueue(id,
send_from,
send_to,
subject,
body,
created_date,
is_sent,
email_template)
}
}
这是我的插入语句:
def insert(email:EmailQueue): Unit ={
DB.withTransaction { implicit c =>
SQL(s"""
INSERT INTO "email_queue" ( "body", "created_date", "id", "is_sent", "send_from", "send_to", "subject", "email_template")
VALUES ( {body}, {created_date}, {id}, {is_sent}, {send_from}, {send_to}, {subject}, {email_template} );
""").on(
"body" -> email.body,
"created_date" -> email.created_date,
"id" -> email.id,
"is_sent" -> email.is_sent,
"send_from" -> email.send_from,
"send_to" -> email.send_to,
"subject" -> email.subject,
"email_template" -> email.email_template
).executeInsert()
}
}
我在插入时收到以下错误:
[error] PSQLException: : ERROR: column "id" is of type uuid but expression is of type character varying [error] Hint: You will need to rewrite or cast the expression. [error] Position: 153 (xxxxxxxxxx.java:2270)
数据库 table 是由此查询创建的:
CREATE TABLE email_queue (
id UUID PRIMARY KEY,
send_from VARCHAR(255) NOT NULL,
send_to VARCHAR(255) NOT NULL,
subject VARCHAR(2000) NOT NULL,
body text NOT NULL,
created_date timestamp without time zone DEFAULT now(),
is_sent BOOLEAN NOT NULL DEFAULT FALSE,
email_template VARCHAR(2000) NOT NULL
);
Anorm 与数据库无关,因为 JDBC,因此默认情况下不支持特定于供应商的数据类型。
您可以在语句中使用 {id}::uuid
,这样在 JDBC 参数中作为字符串传递的 java.util.UUID
然后从传递的 VARCHAR
转换为特定的 PostgreSQL uuid
.
Using string interpolation in
SQL(s"...")
is not recommanded (SQL injection), but Anorm interpolation can be used.
def insert(email:EmailQueue): Unit = DB.withTransaction { implicit c =>
SQL"""
INSERT INTO "email_queue" ( "body", "created_date", "id", "is_sent", "send_from", "send_to", "subject", "email_template")
VALUES ( ${email.body}, ${email.created_date}, ${email.id}::uuid, ${email.is_sent}, ${email.send_from}, ${email.send_to}, ${email.subject}, ${email.email_template} )
""").executeInsert()
}
Not recommended, but can be useful sometimes for vendor specific type, the
anorm.Object
can be used to pass an opaque value as JDBC parameter (there the::uuid
is nicer for me).You can also implement a custom
ToStatement[java.util.UUID]
.