public override AlgebraNode VisitAggregateAlgebraNode(AggregateAlgebraNode node)
{
StreamAggregateIterator streamAggregateIterator = new StreamAggregateIterator();
streamAggregateIterator.RowBuffer = new object[node.OutputList.Length];
streamAggregateIterator.Input = ConvertAlgebraNode(node.Input);
streamAggregateIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(streamAggregateIterator.Input.RowBuffer, node.Input.OutputList);
if (node.Groups == null)
{
streamAggregateIterator.GroupByEntries = new IteratorInput[0];
streamAggregateIterator.DefinedValues = GetDefinedValues(node.OutputList, node.DefinedValues, boundRowBufferEntrySet);
}
else
{
streamAggregateIterator.GroupByEntries = GetIteratorInput(node.Input.OutputList, node.Groups);
streamAggregateIterator.DefinedValues = GetDefinedValues(node.OutputList, node.DefinedValues, boundRowBufferEntrySet);
}
SetLastIterator(node, streamAggregateIterator);
return(node);
}
public override AlgebraNode VisitAssertAlgebraNode(AssertAlgebraNode node)
{
string message;
switch (node.AssertionType)
{
case AssertionType.MaxOneRow:
message = Resources.SubqueryReturnedMoreThanRow;
break;
case AssertionType.BelowRecursionLimit:
message = Resources.MaximumRecursionLevelExceeded;
break;
default:
throw ExceptionBuilder.UnhandledCaseLabel(node.AssertionType);
}
AssertIterator assertIterator = new AssertIterator();
assertIterator.RowBuffer = new object[node.OutputList.Length];
assertIterator.Input = ConvertAlgebraNode(node.Input);
assertIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
assertIterator.Message = message;
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(assertIterator.Input.RowBuffer, node.Input.OutputList);
assertIterator.Predicate = CreateRuntimeExpression(node.Predicate, boundRowBufferEntrySet);
SetLastIterator(node, assertIterator);
return(node);
}
private void UpdatePredicateRowBufferReferences(HashMatchIterator hashMatchIterator, HashMatchAlgebraNode node)
{
if (node.ProbeResidual != null)
{
BoundRowBufferEntrySet leftBoundRowBufferEntrySet = new BoundRowBufferEntrySet(hashMatchIterator.Left.RowBuffer, node.Left.OutputList);
BoundRowBufferEntrySet rightBoundRowBufferEntrySet = new BoundRowBufferEntrySet(hashMatchIterator.Right.RowBuffer, node.Right.OutputList);
hashMatchIterator.ProbeResidual = CreateRuntimeExpression(node.ProbeResidual, leftBoundRowBufferEntrySet, rightBoundRowBufferEntrySet);
}
}
public override AlgebraNode VisitFilterAlgebraNode(FilterAlgebraNode node)
{
FilterIterator filterIterator = new FilterIterator();
filterIterator.RowBuffer = new object[node.OutputList.Length];
filterIterator.Input = ConvertAlgebraNode(node.Input);
filterIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(filterIterator.Input.RowBuffer, node.Input.OutputList);
filterIterator.Predicate = CreateRuntimeExpression(node.Predicate, boundRowBufferEntrySet);
SetLastIterator(node, filterIterator);
return(node);
}
private void UpdatePredicateRowBufferReferences(NestedLoopsIterator nestedLoopsIterator, JoinAlgebraNode node)
{
BoundRowBufferEntrySet leftBoundRowBufferEntrySet = new BoundRowBufferEntrySet(nestedLoopsIterator.Left.RowBuffer, node.Left.OutputList);
BoundRowBufferEntrySet rightBoundRowBufferEntrySet = new BoundRowBufferEntrySet(nestedLoopsIterator.Right.RowBuffer, node.Right.OutputList);
if (node.Predicate != null)
{
nestedLoopsIterator.Predicate = CreateRuntimeExpression(node.Predicate, leftBoundRowBufferEntrySet, rightBoundRowBufferEntrySet);
}
if (node.PassthruPredicate != null)
{
nestedLoopsIterator.PassthruPredicate = CreateRuntimeExpression(node.PassthruPredicate, leftBoundRowBufferEntrySet, rightBoundRowBufferEntrySet);
}
}
public override AlgebraNode VisitComputeScalarAlgebraNode(ComputeScalarAlgebraNode node)
{
ComputeScalarIterator computeScalarIterator = new ComputeScalarIterator();
computeScalarIterator.RowBuffer = new object[node.OutputList.Length];
computeScalarIterator.Input = ConvertAlgebraNode(node.Input);
computeScalarIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(computeScalarIterator.Input.RowBuffer, node.Input.OutputList);
computeScalarIterator.DefinedValues = GetDefinedValues(node.OutputList, node.DefinedValues, boundRowBufferEntrySet);
SetLastIterator(node, computeScalarIterator);
return(node);
}
public override AlgebraNode VisitIndexSpoolAlgebraNode(IndexSpoolAlgebraNode node)
{
IndexSpoolIterator indexSpoolIterator = new IndexSpoolIterator();
indexSpoolIterator.RowBuffer = new object[node.OutputList.Length];
indexSpoolIterator.Input = ConvertAlgebraNode(node.Input);
indexSpoolIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
indexSpoolIterator.IndexEntry = GetIteratorInput(node.Input.OutputList, new RowBufferEntry[] { node.IndexEntry })[0];
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(indexSpoolIterator.Input.RowBuffer, node.Input.OutputList);
indexSpoolIterator.ProbeExpression = CreateRuntimeExpression(node.ProbeExpression, boundRowBufferEntrySet);
SetLastIterator(node, indexSpoolIterator);
return(node);
}
private void PushOuterReferences(object[] rowBuffer, JoinAlgebraNode node)
{
if (node.OuterReferences != null && node.OuterReferences.Length > 0)
{
// Important: We cannot use node.OuterReferences as argument for BoundRowBufferEntrySet().
// The replacment strategy below will replace occurences to the entries by their index
// within the array. Therefore we need an array with the same layout as the row buffer.
RowBufferEntry[] outerReferences = new RowBufferEntry[node.Left.OutputList.Length];
for (int i = 0; i < outerReferences.Length; i++)
{
if (ArrayHelpers.Contains(node.OuterReferences, node.Left.OutputList[i]))
{
outerReferences[i] = node.Left.OutputList[i];
}
}
BoundRowBufferEntrySet bufferEntrySet = new BoundRowBufferEntrySet(rowBuffer, outerReferences);
_outerReferenceStack.Push(bufferEntrySet);
}
}
public override AlgebraNode VisitAssertAlgebraNode(AssertAlgebraNode node)
{
string message;
switch(node.AssertionType)
{
case AssertionType.MaxOneRow:
message = Resources.SubqueryReturnedMoreThanRow;
break;
case AssertionType.BelowRecursionLimit:
message = Resources.MaximumRecursionLevelExceeded;
break;
default:
throw ExceptionBuilder.UnhandledCaseLabel(node.AssertionType);
}
AssertIterator assertIterator = new AssertIterator();
assertIterator.RowBuffer = new object[node.OutputList.Length];
assertIterator.Input = ConvertAlgebraNode(node.Input);
assertIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
assertIterator.Message = message;
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(assertIterator.Input.RowBuffer, node.Input.OutputList);
assertIterator.Predicate = CreateRuntimeExpression(node.Predicate, boundRowBufferEntrySet);
SetLastIterator(node, assertIterator);
return node;
}
public override AlgebraNode VisitComputeScalarAlgebraNode(ComputeScalarAlgebraNode node)
{
ComputeScalarIterator computeScalarIterator = new ComputeScalarIterator();
computeScalarIterator.RowBuffer = new object[node.OutputList.Length];
computeScalarIterator.Input = ConvertAlgebraNode(node.Input);
computeScalarIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(computeScalarIterator.Input.RowBuffer, node.Input.OutputList);
computeScalarIterator.DefinedValues = GetDefinedValues(node.OutputList, node.DefinedValues, boundRowBufferEntrySet);
SetLastIterator(node, computeScalarIterator);
return node;
}
public override AlgebraNode VisitFilterAlgebraNode(FilterAlgebraNode node)
{
FilterIterator filterIterator = new FilterIterator();
filterIterator.RowBuffer = new object[node.OutputList.Length];
filterIterator.Input = ConvertAlgebraNode(node.Input);
filterIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(filterIterator.Input.RowBuffer, node.Input.OutputList);
filterIterator.Predicate = CreateRuntimeExpression(node.Predicate, boundRowBufferEntrySet);
SetLastIterator(node, filterIterator);
return node;
}
public override AlgebraNode VisitAggregateAlgebraNode(AggregateAlgebraNode node)
{
StreamAggregateIterator streamAggregateIterator = new StreamAggregateIterator();
streamAggregateIterator.RowBuffer = new object[node.OutputList.Length];
streamAggregateIterator.Input = ConvertAlgebraNode(node.Input);
streamAggregateIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(streamAggregateIterator.Input.RowBuffer, node.Input.OutputList);
if (node.Groups == null)
{
streamAggregateIterator.GroupByEntries = new IteratorInput[0];
streamAggregateIterator.DefinedValues = GetDefinedValues(node.OutputList, node.DefinedValues, boundRowBufferEntrySet);
}
else
{
streamAggregateIterator.GroupByEntries = GetIteratorInput(node.Input.OutputList, node.Groups);
streamAggregateIterator.DefinedValues = GetDefinedValues(node.OutputList, node.DefinedValues, boundRowBufferEntrySet);
}
SetLastIterator(node, streamAggregateIterator);
return node;
}
private void UpdatePredicateRowBufferReferences(HashMatchIterator hashMatchIterator, HashMatchAlgebraNode node)
{
if (node.ProbeResidual != null)
{
BoundRowBufferEntrySet leftBoundRowBufferEntrySet = new BoundRowBufferEntrySet(hashMatchIterator.Left.RowBuffer, node.Left.OutputList);
BoundRowBufferEntrySet rightBoundRowBufferEntrySet = new BoundRowBufferEntrySet(hashMatchIterator.Right.RowBuffer, node.Right.OutputList);
hashMatchIterator.ProbeResidual = CreateRuntimeExpression(node.ProbeResidual, leftBoundRowBufferEntrySet, rightBoundRowBufferEntrySet);
}
}
private void UpdatePredicateRowBufferReferences(NestedLoopsIterator nestedLoopsIterator, JoinAlgebraNode node)
{
BoundRowBufferEntrySet leftBoundRowBufferEntrySet = new BoundRowBufferEntrySet(nestedLoopsIterator.Left.RowBuffer, node.Left.OutputList);
BoundRowBufferEntrySet rightBoundRowBufferEntrySet = new BoundRowBufferEntrySet(nestedLoopsIterator.Right.RowBuffer, node.Right.OutputList);
if (node.Predicate != null)
nestedLoopsIterator.Predicate = CreateRuntimeExpression(node.Predicate, leftBoundRowBufferEntrySet, rightBoundRowBufferEntrySet);
if (node.PassthruPredicate != null)
nestedLoopsIterator.PassthruPredicate = CreateRuntimeExpression(node.PassthruPredicate, leftBoundRowBufferEntrySet, rightBoundRowBufferEntrySet);
}
public override AlgebraNode VisitIndexSpoolAlgebraNode(IndexSpoolAlgebraNode node)
{
IndexSpoolIterator indexSpoolIterator = new IndexSpoolIterator();
indexSpoolIterator.RowBuffer = new object[node.OutputList.Length];
indexSpoolIterator.Input = ConvertAlgebraNode(node.Input);
indexSpoolIterator.InputOutput = GetIteratorOutput(0, node.Input.OutputList, node.OutputList);
indexSpoolIterator.IndexEntry = GetIteratorInput(node.Input.OutputList, new RowBufferEntry[] { node.IndexEntry })[0];
BoundRowBufferEntrySet boundRowBufferEntrySet = new BoundRowBufferEntrySet(indexSpoolIterator.Input.RowBuffer, node.Input.OutputList);
indexSpoolIterator.ProbeExpression = CreateRuntimeExpression(node.ProbeExpression, boundRowBufferEntrySet);
SetLastIterator(node, indexSpoolIterator);
return node;
}
public RowBufferEntryExpressionUpdater(BoundRowBufferEntrySet[] bufferEntrySets)
{
_bufferEntrySets = bufferEntrySets;
}
private void PushOuterReferences(object[] rowBuffer, JoinAlgebraNode node)
{
if (node.OuterReferences != null && node.OuterReferences.Length > 0)
{
// Important: We cannot use node.OuterReferences as argument for BoundRowBufferEntrySet().
// The replacment strategy below will replace occurences to the entries by their index
// within the array. Therefore we need an array with the same layout as the row buffer.
RowBufferEntry[] outerReferences = new RowBufferEntry[node.Left.OutputList.Length];
for (int i = 0; i < outerReferences.Length; i++)
{
if (ArrayHelpers.Contains(node.OuterReferences, node.Left.OutputList[i]))
outerReferences[i] = node.Left.OutputList[i];
}
BoundRowBufferEntrySet bufferEntrySet = new BoundRowBufferEntrySet(rowBuffer, outerReferences);
_outerReferenceStack.Push(bufferEntrySet);
}
}
