ObjectTransactionFindFirstOrDefault Method (Repository, ExpressionFuncDomainObject, Boolean)

Searches through both committed and uncommitted objects for a single object, matching the predicate. Returns null if not found. This variant

Namespace: Aloe.SystemFrameworks.Domain
Assembly: Aloe.SystemFrameworks.Domain (in Aloe.SystemFrameworks.Domain.dll) Version: 20.1.3.5

Syntax

C++

Copy

public DomainObject FindFirstOrDefault(
	Repository repository,
	Expression<Func<DomainObject, bool>> predicate
)

Public Function FindFirstOrDefault ( 
	repository As Repository,
	predicate As Expression(Of Func(Of DomainObject, Boolean))
) As DomainObject

public:
DomainObject^ FindFirstOrDefault(
	Repository^ repository, 
	Expression<Func<DomainObject^, bool>^>^ predicate
)

member FindFirstOrDefault : 
        repository : Repository * 
        predicate : Expression<Func<DomainObject, bool>> -> DomainObject

Parameters

repository: Type: Aloe.SystemFrameworks.DomainRepository
The repository to search.
predicate: Type: System.Linq.ExpressionsExpressionFuncDomainObject, Boolean
The predicate to match.

Return Value

Type: DomainObject
The found object or null.

Remarks

Because it knows, that it has to find only a single object, the method searches first locally and queries the data source only if no object is found locally.

Reference

ObjectTransaction Class

FindFirstOrDefault Overload

Aloe.SystemFrameworks.Domain Namespace