/// <summary>
/// Creates a transitively generated join edge
/// </summary>
/// <param name="left"> the left table </param>
/// <param name="right"> the right table </param>
/// <param name="joinKind"> the join kind </param>
/// <param name="leftVars"> left equijoin vars </param>
/// <param name="rightVars"> right equijoin vars </param>
/// <returns> the join edge </returns>
internal static JoinEdge CreateTransitiveJoinEdge(
AugmentedTableNode left, AugmentedTableNode right, JoinKind joinKind,
List <ColumnVar> leftVars, List <ColumnVar> rightVars)
{
var joinEdge = new JoinEdge(left, right, null, joinKind, leftVars, rightVars);
return(joinEdge);
}
internal static JoinEdge CreateJoinEdge(
AugmentedTableNode left, AugmentedTableNode right,
AugmentedJoinNode joinNode,
ColumnVar leftVar, ColumnVar rightVar)
{
var leftVars = new List <ColumnVar>();
var rightVars = new List <ColumnVar>();
leftVars.Add(leftVar);
rightVars.Add(rightVar);
var joinOpType = joinNode.Node.Op.OpType;
PlanCompiler.Assert(
(joinOpType == OpType.LeftOuterJoin || joinOpType == OpType.InnerJoin),
"Unexpected join type for join edge: " + joinOpType);
var joinKind = joinOpType == OpType.LeftOuterJoin ? JoinKind.LeftOuter : JoinKind.Inner;
var joinEdge = new JoinEdge(left, right, joinNode, joinKind, leftVars, rightVars);
return(joinEdge);
}
// <summary>
// Creates a transitively generated join edge
// </summary>
// <param name="left"> the left table </param>
// <param name="right"> the right table </param>
// <param name="joinKind"> the join kind </param>
// <param name="leftVars"> left equijoin vars </param>
// <param name="rightVars"> right equijoin vars </param>
// <returns> the join edge </returns>
internal static JoinEdge CreateTransitiveJoinEdge(
AugmentedTableNode left, AugmentedTableNode right, JoinKind joinKind,
List<ColumnVar> leftVars, List<ColumnVar> rightVars)
{
var joinEdge = new JoinEdge(left, right, null, joinKind, leftVars, rightVars);
return joinEdge;
}
internal static JoinEdge CreateJoinEdge(
AugmentedTableNode left, AugmentedTableNode right,
AugmentedJoinNode joinNode,
ColumnVar leftVar, ColumnVar rightVar)
{
var leftVars = new List<ColumnVar>();
var rightVars = new List<ColumnVar>();
leftVars.Add(leftVar);
rightVars.Add(rightVar);
var joinOpType = joinNode.Node.Op.OpType;
PlanCompiler.Assert(
(joinOpType == OpType.LeftOuterJoin || joinOpType == OpType.InnerJoin),
"Unexpected join type for join edge: " + joinOpType);
var joinKind = joinOpType == OpType.LeftOuterJoin ? JoinKind.LeftOuter : JoinKind.Inner;
var joinEdge = new JoinEdge(left, right, joinNode, joinKind, leftVars, rightVars);
return joinEdge;
}