internal void GetEquiJoinPredicates(
VarVec leftTableDefinitions,
VarVec rightTableDefinitions,
out List <Var> leftTableEquiJoinColumns,
out List <Var> rightTableEquiJoinColumns,
out Predicate otherPredicates)
{
otherPredicates = new Predicate(this.m_command);
leftTableEquiJoinColumns = new List <Var>();
rightTableEquiJoinColumns = new List <Var>();
foreach (System.Data.Entity.Core.Query.InternalTrees.Node part in this.m_parts)
{
Var leftVar;
Var rightVar;
if (Predicate.IsEquiJoinPredicate(part, leftTableDefinitions, rightTableDefinitions, out leftVar, out rightVar))
{
leftTableEquiJoinColumns.Add(leftVar);
rightTableEquiJoinColumns.Add(rightVar);
}
else
{
otherPredicates.AddPart(part);
}
}
}
private static bool IsEquiJoinPredicate(
System.Data.Entity.Core.Query.InternalTrees.Node simplePredicateNode,
VarVec leftTableDefinitions,
VarVec rightTableDefinitions,
out Var leftVar,
out Var rightVar)
{
leftVar = (Var)null;
rightVar = (Var)null;
Var leftVar1;
Var rightVar1;
if (!Predicate.IsEquiJoinPredicate(simplePredicateNode, out leftVar1, out rightVar1))
{
return(false);
}
if (leftTableDefinitions.IsSet(leftVar1) && rightTableDefinitions.IsSet(rightVar1))
{
leftVar = leftVar1;
rightVar = rightVar1;
}
else
{
if (!leftTableDefinitions.IsSet(rightVar1) || !rightTableDefinitions.IsSet(leftVar1))
{
return(false);
}
leftVar = rightVar1;
rightVar = leftVar1;
}
return(true);
}
internal Predicate GetJoinPredicates(
VarVec leftTableDefinitions,
VarVec rightTableDefinitions,
out Predicate otherPredicates)
{
Predicate predicate = new Predicate(this.m_command);
otherPredicates = new Predicate(this.m_command);
foreach (System.Data.Entity.Core.Query.InternalTrees.Node part in this.m_parts)
{
Var leftVar;
Var rightVar;
if (Predicate.IsEquiJoinPredicate(part, leftTableDefinitions, rightTableDefinitions, out leftVar, out rightVar))
{
predicate.AddPart(part);
}
else
{
otherPredicates.AddPart(part);
}
}
return(predicate);
}