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IDaoGetScalar Method (IEntityFields, ITransaction, IPredicate, IRelationCollection, IGroupByCollection, Boolean)

Executes the expression defined with the field in the fields collection specified, using the various elements defined. The expression is executed as a scalar query and a single value is returned.

Namespace:  SD.LLBLGen.Pro.ORMSupportClasses
Assembly:  SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.4.0.0 (5.4.0)
Syntax
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Object GetScalar(
	IEntityFields fields,
	ITransaction containingTransaction,
	IPredicate filter,
	IRelationCollection relations,
	IGroupByCollection groupByClause,
	bool allowDuplicates
)

Parameters

fields
Type: SD.LLBLGen.Pro.ORMSupportClassesIEntityFields
IEntityFields instance with a single field with an expression defined and eventually aggregates
containingTransaction
Type: SD.LLBLGen.Pro.ORMSupportClassesITransaction
A containing transaction, if caller is added to a transaction, or null if not.
filter
Type: SD.LLBLGen.Pro.ORMSupportClassesIPredicate
filter to use
relations
Type: SD.LLBLGen.Pro.ORMSupportClassesIRelationCollection
The relations to walk
groupByClause
Type: SD.LLBLGen.Pro.ORMSupportClassesIGroupByCollection
The list of fields to group by on. When not specified or an empty collection is specified, no group by clause is added to the query. A check is performed for each field in the selectList. If a field in the selectList is not present in the groupByClause collection, an exception is thrown.
allowDuplicates
Type: SystemBoolean
Allow duplicates in the resultset.

Return Value

Type: Object
the value which is the result of the expression defined on the specified field
See Also