public SubselectEvalStrategyNRRelOpAnyDefault(
ExprEvaluator valueEval,
ExprEvaluator selectEval,
bool resultWhenNoMatchingEvents,
RelationalComputer computer,
ExprEvaluator filterEval)
: base(valueEval, selectEval, resultWhenNoMatchingEvents, computer)
{
_filterEval = filterEval;
}
public SubselectEvalStrategyNRRelOpAllWGroupBy(
ExprEvaluator valueEval,
ExprEvaluator selectEval,
bool resultWhenNoMatchingEvents,
RelationalComputer computer,
ExprEvaluator havingEval)
: base(valueEval, selectEval, resultWhenNoMatchingEvents, computer)
{
_havingEval = havingEval;
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
// Must have 2 child nodes
if (ChildNodes.Count != 2)
{
throw new IllegalStateException("Relational op node does not have exactly 2 parameters");
}
_evaluators = ExprNodeUtility.GetEvaluators(ChildNodes);
// Must be either numeric or string
Type typeOne = _evaluators[0].ReturnType.GetBoxedType();
Type typeTwo = _evaluators[1].ReturnType.GetBoxedType();
Type compareType;
if (typeOne == typeTwo)
{
compareType = typeOne;
}
else if ((typeOne == typeof(string)) && (typeTwo == typeof(string)))
{
compareType = typeof(string);
}
else
{
try
{
compareType = typeOne.GetCompareToCoercionType(typeTwo);
}
catch (CoercionException)
{
if (!typeOne.IsNumeric())
{
throw new ExprValidationException(
string.Format("Implicit conversion from datatype '{0}' to numeric is not allowed", typeOne.FullName));
}
else if (!typeTwo.IsNumeric())
{
throw new ExprValidationException(
string.Format("Implicit conversion from datatype '{0}' to numeric is not allowed", typeTwo.FullName));
}
else
{
throw;
}
}
}
_computer = _relationalOpEnum.GetComputer(compareType, typeOne, typeTwo);
return(null);
}
public static SubselectEvalStrategyNR CreateStrategyAnyAllIn(ExprSubselectNode subselectExpression,
bool isNot,
bool isAll,
bool isAny,
RelationalOpEnum?relationalOp)
{
if (subselectExpression.ChildNodes.Count != 1)
{
throw new ExprValidationException("The Subselect-IN requires 1 child expression");
}
ExprNode valueExpr = subselectExpression.ChildNodes[0];
// Must be the same boxed type returned by expressions under this
Type typeOne = subselectExpression.ChildNodes[0].ExprEvaluator.ReturnType.GetBoxedType();
// collections, array or map not supported
if ((typeOne.IsArray) ||
(typeOne.IsImplementsInterface(typeof(ICollection <object>))) ||
(typeOne.IsImplementsInterface(typeof(IDictionary <string, object>))))
{
throw new ExprValidationException("Collection or array comparison is not allowed for the IN, ANY, SOME or ALL keywords");
}
Type typeTwo;
if (subselectExpression.SelectClause != null)
{
typeTwo = subselectExpression.SelectClause[0].ExprEvaluator.ReturnType;
}
else
{
typeTwo = subselectExpression.RawEventType.UnderlyingType;
}
bool aggregated = Aggregated(subselectExpression.SubselectAggregationType);
bool grouped = Grouped(subselectExpression.StatementSpecCompiled.GroupByExpressions);
ExprEvaluator selectEval = subselectExpression.SelectClause == null ? null : subselectExpression.SelectClause[0].ExprEvaluator;
ExprEvaluator valueEval = valueExpr.ExprEvaluator;
ExprEvaluator filterEval = subselectExpression.FilterExpr;
ExprEvaluator havingEval = subselectExpression.HavingExpr;
if (relationalOp != null)
{
if ((typeOne != typeof(string)) || (typeTwo != typeof(string)))
{
if (!typeOne.IsNumeric())
{
throw new ExprValidationException("Implicit conversion from datatype '" + Name.Of(typeOne) + "' to numeric is not allowed");
}
if (!typeTwo.IsNumeric())
{
throw new ExprValidationException("Implicit conversion from datatype '" + Name.Of(typeTwo) + "' to numeric is not allowed");
}
}
Type compareType = typeOne.GetCompareToCoercionType(typeTwo);
RelationalComputer computer = relationalOp.Value.GetComputer(compareType, typeOne, typeTwo);
if (isAny)
{
if (grouped)
{
return(new SubselectEvalStrategyNRRelOpAnyWGroupBy(valueEval, selectEval, false, computer, havingEval));
}
if (aggregated)
{
return(new SubselectEvalStrategyNRRelOpAllAnyAggregated(valueEval, selectEval, false, computer, havingEval));
}
return(new SubselectEvalStrategyNRRelOpAnyDefault(valueEval, selectEval, false, computer, filterEval));
}
// handle ALL
if (grouped)
{
return(new SubselectEvalStrategyNRRelOpAllWGroupBy(valueEval, selectEval, true, computer, havingEval));
}
if (aggregated)
{
return(new SubselectEvalStrategyNRRelOpAllAnyAggregated(valueEval, selectEval, true, computer, havingEval));
}
return(new SubselectEvalStrategyNRRelOpAllDefault(valueEval, selectEval, true, computer, filterEval));
}
Coercer coercer = GetCoercer(typeOne, typeTwo);
if (isAll)
{
if (grouped)
{
return(new SubselectEvalStrategyNREqualsAllWGroupBy(valueEval, selectEval, true, isNot, coercer, havingEval));
}
if (aggregated)
{
return(new SubselectEvalStrategyNREqualsAllAnyAggregated(valueEval, selectEval, true, isNot, coercer, havingEval));
}
return(new SubselectEvalStrategyNREqualsAllDefault(valueEval, selectEval, true, isNot, coercer, filterEval));
}
else if (isAny)
{
if (grouped)
{
return(new SubselectEvalStrategyNREqualsAnyWGroupBy(valueEval, selectEval, false, isNot, coercer, havingEval));
}
if (aggregated)
{
return(new SubselectEvalStrategyNREqualsAllAnyAggregated(valueEval, selectEval, true, isNot, coercer, havingEval));
}
return(new SubselectEvalStrategyNREqualsAnyDefault(valueEval, selectEval, false, isNot, coercer, filterEval));
}
else
{
if (grouped)
{
return(new SubselectEvalStrategyNREqualsInWGroupBy(valueEval, selectEval, isNot, coercer, havingEval));
}
if (aggregated)
{
return(new SubselectEvalStrategyNREqualsInAggregated(valueEval, selectEval, isNot, coercer, havingEval));
}
if (filterEval == null)
{
return(new SubselectEvalStrategyNREqualsInUnfiltered(valueEval, selectEval, isNot, coercer));
}
return(new SubselectEvalStrategyNREqualsInFiltered(valueEval, selectEval, isNot, coercer, filterEval));
}
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
// Must have 2 child nodes
var childNodes = ChildNodes;
if (childNodes.Count < 1)
{
throw new IllegalStateException("Group relational op node must have 1 or more parameters");
}
_evaluators = ExprNodeUtility.GetEvaluators(childNodes);
var typeOne = _evaluators[0].ReturnType.GetBoxedType();
// collections, array or map not supported
if ((typeOne.IsArray) ||
(typeOne.IsGenericCollection()) ||
(typeOne.IsGenericDictionary()))
{
throw new ExprValidationException(
"Collection or array comparison is not allowed for the IN, ANY, SOME or ALL keywords");
}
_transformList = new Func <object, object> [childNodes.Count];
var comparedTypes = new List <Type>();
comparedTypes.Add(typeOne);
_hasCollectionOrArray = false;
for (int i = 1; i < childNodes.Count; i++)
{
var propType = _evaluators[i].ReturnType;
if (propType.IsArray)
{
_hasCollectionOrArray = true;
if (propType.GetElementType() != typeof(Object))
{
comparedTypes.Add(propType.GetElementType());
}
}
else if (propType.IsGenericDictionary())
{
var baseTransform = MagicMarker.GetDictionaryFactory(propType);
_transformList[i] = o => baseTransform(o);
_hasCollectionOrArray = true;
}
else if (propType.IsGenericCollection())
{
var baseTransform = MagicMarker.GetCollectionFactory(propType);
_transformList[i] = o => baseTransform(o);
_hasCollectionOrArray = true;
}
else
{
comparedTypes.Add(propType);
}
}
// Determine common denominator type
Type coercionType;
try
{
coercionType = TypeHelper.GetCommonCoercionType(comparedTypes.ToArray());
}
catch (CoercionException ex)
{
throw new ExprValidationException("Implicit conversion not allowed: " + ex.Message);
}
// Must be either numeric or string
if (coercionType != typeof(String))
{
if (!coercionType.IsNumeric())
{
throw new ExprValidationException(string.Format("Implicit conversion from datatype '{0}' to numeric is not allowed", Name.Clean(coercionType)));
}
}
_computer = _relationalOp.GetComputer(coercionType, coercionType, coercionType);
return(null);
}
protected SubselectEvalStrategyNRRelOpBase(ExprEvaluator valueEval, ExprEvaluator selectEval, bool resultWhenNoMatchingEvents, RelationalComputer computer)
: base(valueEval, selectEval, resultWhenNoMatchingEvents)
{
Computer = computer;
}