private static bool HasVarReferencesShallow(
System.Data.Entity.Core.Query.InternalTrees.Node node,
VarVec vars,
int childIndex,
out bool continueUp)
{
switch (node.Op.OpType)
{
case OpType.Project:
continueUp = false;
return(VarRefManager.HasVarReferences(((ProjectOp)node.Op).Outputs, vars));
case OpType.Sort:
case OpType.ConstrainedSort:
continueUp = true;
return(VarRefManager.HasVarReferences(((SortBaseOp)node.Op).Keys, vars));
case OpType.GroupBy:
continueUp = false;
return(VarRefManager.HasVarReferences(((GroupByBaseOp)node.Op).Keys, vars));
case OpType.UnionAll:
case OpType.Intersect:
case OpType.Except:
continueUp = false;
return(VarRefManager.HasVarReferences((SetOp)node.Op, vars, childIndex));
case OpType.Distinct:
continueUp = false;
return(VarRefManager.HasVarReferences(((DistinctOp)node.Op).Keys, vars));
case OpType.PhysicalProject:
continueUp = false;
return(VarRefManager.HasVarReferences(((PhysicalProjectOp)node.Op).Outputs, vars));
default:
continueUp = true;
return(false);
}
}
internal bool HasKeyReferences(VarVec keys, System.Data.Entity.Core.Query.InternalTrees.Node definingNode, System.Data.Entity.Core.Query.InternalTrees.Node targetJoinNode)
{
System.Data.Entity.Core.Query.InternalTrees.Node key = definingNode;
System.Data.Entity.Core.Query.InternalTrees.Node node;
for (bool continueUp = true; continueUp& this.m_nodeToParentMap.TryGetValue(key, out node); key = node)
{
if (node != targetJoinNode)
{
if (VarRefManager.HasVarReferencesShallow(node, keys, this.m_nodeToSiblingNumber[key], out continueUp))
{
return(true);
}
for (int index = this.m_nodeToSiblingNumber[key] + 1; index < node.Children.Count; ++index)
{
if (node.Children[index].GetNodeInfo(this.m_command).ExternalReferences.Overlaps(keys))
{
return(true);
}
}
}
}
return(false);
}
private JoinElimination(PlanCompiler compilerState)
{
m_compilerState = compilerState;
m_varRemapper = new VarRemapper(m_compilerState.Command);
m_varRefManager = new VarRefManager(m_compilerState.Command);
}
private JoinElimination(PlanCompiler compilerState)
{
m_compilerState = compilerState;
m_varRemapper = new VarRemapper(m_compilerState.Command);
m_varRefManager = new VarRefManager(m_compilerState.Command);
}
private JoinElimination(System.Data.Entity.Core.Query.PlanCompiler.PlanCompiler compilerState)
{
this.m_compilerState = compilerState;
this.m_varRemapper = new VarRemapper(this.m_compilerState.Command);
this.m_varRefManager = new VarRefManager(this.m_compilerState.Command);
}
