// <summary>
// Apply the rules that belong to the specified group to the given query tree.
// </summary>
internal static bool Process(PlanCompiler compilerState, TransformationRulesGroup rulesGroup)
{
ReadOnlyCollection <ReadOnlyCollection <Rule> > rulesTable = null;
switch (rulesGroup)
{
case TransformationRulesGroup.All:
rulesTable = AllRulesTable;
break;
case TransformationRulesGroup.PostJoinElimination:
rulesTable = PostJoinEliminationRulesTable;
break;
case TransformationRulesGroup.Project:
rulesTable = ProjectRulesTable;
break;
case TransformationRulesGroup.NullSemantics:
rulesTable = NullSemanticsRulesTable;
break;
}
// If any rule has been applied after which reapplying nullability rules may be useful,
// reapply nullability rules.
bool projectionPrunningRequired;
if (Process(compilerState, rulesTable, out projectionPrunningRequired))
{
bool projectionPrunningRequired2;
Process(compilerState, NullabilityRulesTable, out projectionPrunningRequired2);
projectionPrunningRequired = projectionPrunningRequired || projectionPrunningRequired2;
}
return(projectionPrunningRequired);
}
// <summary>
// Helper method for applying transformation rules
// </summary>
private bool ApplyTransformations(ref string dumpString, TransformationRulesGroup rulesGroup)
{
if (MayApplyTransformationRules)
{
dumpString = SwitchToPhase(PlanCompilerPhase.Transformations);
return(TransformationRules.Process(this, rulesGroup));
}
return(false);
}
/// <summary>
/// Helper method for applying transformation rules
/// </summary>
/// <param name="dumpString"> </param>
/// <param name="rulesGroup"> </param>
/// <returns> </returns>
private bool ApplyTransformations(ref string dumpString, TransformationRulesGroup rulesGroup)
{
if (MayApplyTransformationRules)
{
dumpString = SwitchToPhase(PlanCompilerPhase.Transformations);
return TransformationRules.Process(this, rulesGroup);
}
return false;
}
// <summary>
// Apply the rules that belong to the specified group to the given query tree.
// </summary>
internal static bool Process(PlanCompiler compilerState, TransformationRulesGroup rulesGroup)
{
ReadOnlyCollection<ReadOnlyCollection<Rule>> rulesTable = null;
switch (rulesGroup)
{
case TransformationRulesGroup.All:
rulesTable = AllRulesTable;
break;
case TransformationRulesGroup.PostJoinElimination:
rulesTable = PostJoinEliminationRulesTable;
break;
case TransformationRulesGroup.Project:
rulesTable = ProjectRulesTable;
break;
case TransformationRulesGroup.NullSemantics:
rulesTable = NullSemanticsRulesTable;
break;
}
// If any rule has been applied after which reapplying nullability rules may be useful,
// reapply nullability rules.
bool projectionPrunningRequired;
if (Process(compilerState, rulesTable, out projectionPrunningRequired))
{
bool projectionPrunningRequired2;
Process(compilerState, NullabilityRulesTable, out projectionPrunningRequired2);
projectionPrunningRequired = projectionPrunningRequired || projectionPrunningRequired2;
}
return projectionPrunningRequired;
}
internal static bool Process(System.Data.Entity.Core.Query.PlanCompiler.PlanCompiler compilerState, TransformationRulesGroup rulesGroup)
{
ReadOnlyCollection <ReadOnlyCollection <System.Data.Entity.Core.Query.InternalTrees.Rule> > rulesTable = (ReadOnlyCollection <ReadOnlyCollection <System.Data.Entity.Core.Query.InternalTrees.Rule> >)null;
switch (rulesGroup)
{
case TransformationRulesGroup.All:
rulesTable = TransformationRules.AllRulesTable;
break;
case TransformationRulesGroup.Project:
rulesTable = TransformationRules.ProjectRulesTable;
break;
case TransformationRulesGroup.PostJoinElimination:
rulesTable = TransformationRules.PostJoinEliminationRulesTable;
break;
case TransformationRulesGroup.NullSemantics:
rulesTable = TransformationRules.NullSemanticsRulesTable;
break;
}
bool projectionPruningRequired1;
if (TransformationRules.Process(compilerState, rulesTable, out projectionPruningRequired1))
{
bool projectionPruningRequired2;
TransformationRules.Process(compilerState, TransformationRules.NullabilityRulesTable, out projectionPruningRequired2);
projectionPruningRequired1 = projectionPruningRequired1 || projectionPruningRequired2;
}
return(projectionPruningRequired1);
}
