calasql-query_3.0.1.5.source-code.Column.scala Maven / Gradle / Ivy
package scalasql.query
import scalasql.core.{Context, Expr, SqlStr, TypeMapper}
import scalasql.core.SqlStr.SqlStringSyntax
/**
* A variant of [[Expr]] representing a raw table column; allows assignment in updates
* and inserts
*/
class Column[T](tableRef: TableRef, val name: String)(implicit val mappedType: TypeMapper[T])
extends Expr[T] {
def :=(v: Expr[T]) = Column.Assignment(this, v)
def renderToSql0(implicit ctx: Context) = {
val suffix = SqlStr.raw(ctx.config.columnNameMapper(name))
ctx.fromNaming.get(tableRef) match {
case Some("") => suffix
case Some(s) => SqlStr.raw(s) + sql".$suffix"
case None =>
sql"SCALASQL_MISSING_TABLE_${SqlStr.raw(Table.name(tableRef.value))}.$suffix"
}
}
}
object Column {
case class Assignment[T](column: Column[T], value: Expr[T])
}