org.orbroker.QuerySession.scala Maven / Gradle / Ivy
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package org.orbroker
import java.sql._
import org.orbroker.exception._
/**
* The public interface for querying and
* calling procedures in either
* read-only mode, or transactional.
*/
trait QuerySession extends Queryable {
private def call[OP, T](
token: Token[T],
cstm: CallStatement,
parms: Seq[(String, Any)],
receivers: Seq[T ⇒ Boolean],
outParmHandler: Option[(OutParms) ⇒ OP]): OP = {
try {
val (rowsUpdated, outParm) =
cstm.call(token, this, toMap(parms), None, receivers, outParmHandler)
if (readOnly && rowsUpdated > 0) {
throw new StoredProcedureUpdateException(token.id, rowsUpdated)
}
outParm
} catch {
case e: SQLException ⇒ throw evaluate(token.id, e)
}
}
protected def queryFromCall[T](token: Token[T], cs: CallStatement, parms: Seq[(String, Any)], receiver: T ⇒ Boolean) = {
token.extractor match {
case ph: OutParmExtractor[_] ⇒ {
val pef = (op: OutParms) ⇒ ph.extract(op)
val op = call[T, T](token, cs, parms, Seq.empty, Some(pef))
receiver.apply(op)
}
case _ ⇒ call(token, cs, parms, Seq(receiver), None)
}
}
def callForParms[T](token: Token[_], parms: (String, Any)*)(ph: OutParms ⇒ T): T = {
val cs = getCallStatement(token)
call[T, Any](token.asInstanceOf[Token[Any]], cs, parms, Seq.empty, Some(ph))
}
}