How to access datetime field outside of transaction with kotlin exposed - kotlin

Question

I've got an exposed DAO-style setup with a datetime-column and want to access it after I received the row from the schema.
Table:
object Entries : IntIdTable() {
val date = datetime(name = "date").nullable()
}
Entity:
class Entry(id: EntityID<Int>) : IntEntity(id) {
companion object : EntityClass<Entry>(Entries)
var date by Entries.date
}
DAO:
object DB {
private val pool = BasicDataSource()
private val database: Database
init {
pool.url = "jdbc:mysql://127.0.0.1:3306/test"
pool.driverClassName = "com.mysql.cj.jdbc.Driver"
pool.username = "user"
pool.password = "secret"
pool.minIdle = 5
pool.maxIdle = 10
database = Database.connect(pool)
}
infix fun <T> query(block: DB.() -> T): T {
return transaction {
block.invoke(this#DB)
}
}
}
Main:
fun main() {
val entry = DB.query {
Entry.all().single() // There is only one row at this point
}
println(entry.date) //! Error is thrown on this line
}
It throws a java.lang.IllegalStateException: No transaction in context.. When I move the println into the transaction, it works as expected. If I change the type of the column to varchar and expect a string it works in both cases.
How can I get the date outside of the transaction? I think it worked a few versions back, but I'm unsure.

Answer 1

I solved the problem by updating the Exposed dependencies to the latest version, which has a new naming pattern.
Old dependencies:
<dependency>
<groupId>org.jetbrains.exposed</groupId>
<artifactId>exposed</artifactId>
<version>0.17.14</version>
</dependency>
New dependencies:
<dependency>
<groupId>org.jetbrains.exposed</groupId>
<artifactId>exposed-core</artifactId>
<version>0.36.1</version>
</dependency>
<dependency>
<groupId>org.jetbrains.exposed</groupId>
<artifactId>exposed-dao</artifactId>
<version>0.36.1</version>
</dependency>
<dependency>
<groupId>org.jetbrains.exposed</groupId>
<artifactId>exposed-jdbc</artifactId>
<version>0.36.1</version>
</dependency>
<dependency>
<groupId>org.jetbrains.exposed</groupId>
<artifactId>exposed-java-time</artifactId>
<version>0.36.1</version>
</dependency>
Looks a little more bloated, but I guess it's cleaner to not have every possible module of Exposed loaded every time.
Side note:
I needed to update some imports (IntIdTable, EntityId, etc. and datetime are now located in new packages) and replace Entries.date eq null by Entries.date.isNull() in queries.