LLBLGen Pro v5.4 Runtime Framework Reference Manual
Namespaces
SD.LLBLGen.Pro.LinqSupportClasses Namespaces
SD.LLBLGen.Pro.LinqSupportClasses
LinqUtils Class
LinqUtils Methods
AddFieldToProjectionIfNotPresent Method
AddFromClauseDirectivesToRelationsCollection Method
AddPathEdgesToPrefetchPath Method
AddPathEdgesToPrefetchPathElement Method
AddRelationsRangeToRelationsCollection Method
CalculateRowHashForSpecifiedValues Method
CheckIfImplicitCast Method
CheckifJoinIsFullQuery Method
CloneField Method
CoerceBooleanExpressionToDbFunctionCallParameter Method
CoercePredicateToPredicateExpression Method
CoerceSetReferenceExpressionToEntityFieldExpressionIfRequired Method
CoerceToSet Method
CoerceToType Method
ConvertLocalExpressionToRealObject Method
CorrectRenamedFieldIfRequired Method
CreateBoolProducerLambda Method
CreateConstantBoolPredicate Method
CreateDbFunctionCallAsLLBLExpression Method
CreateDerivedTable Method
CreateEntityInstanceFromEntityType Method
CreateHashValueKeyFromIndices Method
CreateObjectCreatorFuncInstance Method
CreatePkfieldPkFieldFilterFromEntity Method
CreatePkFilterFromEntity Method
CreatePredicate Method
CreatePredicateExpressionFromCorrelationRelation Method
CreateProjectionLambdaForTypedViewExpression Method
CreateProperReferenceFieldFromSourceFieldFromProjection Method
CreateScalarQueryFromQueryExpression Method
CreateUsableDbFunctionCallParameterValue Method
DetermineComparisonOperatorForPredicate Method
DetermineDifferentValuesForNestedQueryFilter Method
DetermineEntityTypeFromEntityCollectionType Method
DetermineEntityTypeFromMemberExpression Method
DetermineEntityTypeFromSetExpression Method
DetermineEntityTypeFromType Method
DetermineInheritanceHierarchyTypeOfEntity Method
DetermineSetElementType Method
GetAllFieldsForEntity Method
GetAllFieldsFromProjection Method
GetAllPkFieldsOfEntity Method
GetElementCreator Method
GetEntityFactory(T) Method
GetEntityName Method
GetEntityNameFromType Method
GetEntityTypeEnumAsIntFromType Method
GetFieldObject Method
GetFieldObjectAndSetObjectAlias Method
GetFirstFieldInProjection Method
GetTypeOfValue Method
GrabFirstUsuableFieldInProjection Method
IsNullableOfT Method
IsSingleValueType Method
ObtainObjectValuesFromListOfObjects Method
ObtainPkValuesFromListOfEntities Method
ObtainRealValueFromConstantWrapped Method
ObtainTypeFilterForEntity Method
ObtainValidFieldFromEntity Method
ProduceBooleanProducerLambdaFromBooleanTypedExpression Method
ProduceInvocationLambdaFromInvocationExpression Method
ProduceProperBooleanExpressionLambda Method
RemoveConvertExpressionWrappers Method
RemovePredicatesFromFilter Method
RemoveUnaryQuoteExpressionWrappers Method
ReplaceFirstFieldInProjection Method
SafeExpressionToString Method
SetProperHintForJoin Method
StripOutProjectionFromJoinResultExpression Method
UnwrapNotExpression Method
ValuesAreEqual Method
WrapProjectionElementInSelectIfRequired Method
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LinqUtilsProduceBooleanProducerLambdaFromBooleanTypedExpression Method

Produces the boolean producer lambda from boolean typed expression (which can be a filter or an LLBLGen expression with boolean operator) boolean expression in projection means it has to be wrapped inside a scalarquery expression which should be wrapped inside a field which then should be the parameter of a dbfunction call which represents a CASE statement. This db function call's result has to be processed by a lambda which checks if the dbfunction call's case statement returned 1 or 0 and returns true or false.

Namespace:  SD.LLBLGen.Pro.LinqSupportClasses
Assembly:  SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.4.0.0 (5.4.0)
Syntax
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public static LambdaExpression ProduceBooleanProducerLambdaFromBooleanTypedExpression(
	IExpression booleanTypedExpression,
	FunctionMappingsContainer functionMappings,
	ITemplateGroupSpecificCreator frameworkElementCreator,
	out Dictionary<int, Expression> boolProducerArguments
)

Parameters

booleanTypedExpression
Type: SD.LLBLGen.Pro.ORMSupportClassesIExpression
The boolean typed expression.
functionMappings
Type: SD.LLBLGen.Pro.LinqSupportClassesFunctionMappingsContainer
The function mappings.
frameworkElementCreator
Type: SD.LLBLGen.Pro.LinqSupportClassesITemplateGroupSpecificCreator
The framework element creator.
boolProducerArguments
Type: System.Collections.GenericDictionaryInt32, Expression
The bool producer arguments.

Return Value

Type: LambdaExpression
Lambda which can be used to obtain a boolean value from a resultset from a projectionfetch.
See Also