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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LinqUtilsGrabFirstUsuableFieldInProjection Method

Grabs the first usable field in the projection definition passed in. For entity projections, this is the *last* field as due to inheritance it can be the first field is in the root of the hierarchy. For the caller this shouldn't matter.

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 IEntityFieldCore GrabFirstUsuableFieldInProjection(
	ProjectionDefinition projectionDefinition,
	IElementCreatorCore generatedCodeElementCreator
)

Parameters

projectionDefinition
Type: SD.LLBLGen.Pro.LinqSupportClassesProjectionDefinition
The projection definition.
generatedCodeElementCreator
Type: SD.LLBLGen.Pro.ORMSupportClassesIElementCreatorCore
The generated code element creator.

Return Value

Type: IEntityFieldCore
First field object in the projection passed in.
See Also