How do I insert a UUID value?
I am using anorm 2.4 in play framework 2.3 supported by postgresql 9.4
Give a model like this:
case class EmailQueue(id:UUID,
send_from:String,
send_to:String,
subject:String,
body:String,
created_date:Date,
is_sent:Boolean,
email_template:String)
This is my parser:
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)
}
}
And this is my insert statement:
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()
}
}
The following error appears when pasting:
[error] PSQLException :: ERROR: the "id" column is of type uuid, but the expression is intrinsically variable [error] Hint: You will need to rewrite or discard the expression. [error] Position: 153 (Xxxxxxxxxx.java:2270)
The database table is created by this request:
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
);
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Anorm is not a DB agent like JDBC, so vendor specific datatype is not supported by default.
You can use {id}::uuid
in statements so that java.util.UUID
passed as String in JDBC parameters is then converted from past VARCHAR
to specific PostgreSQL uuid
.
Using string interpolation is
SQL(s"...")
not recommended (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 a certain type of provider,
anorm.Object
can be used to pass an opaque value as a JDBC parameter (there::uuid
it is better for me).You can also implement a custom
ToStatement[java.util.UUID]
.
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