共用方式為

ValueGeneratorCache.GetOrAdd 方法

  • 參考

定義

命名空間:
Microsoft.EntityFrameworkCore.ValueGeneration
組件:
Microsoft.EntityFrameworkCore.dll
套件:
Microsoft.EntityFrameworkCore v1.0.6
套件:
Microsoft.EntityFrameworkCore v1.1.6
套件:
Microsoft.EntityFrameworkCore v2.0.3
套件:
Microsoft.EntityFrameworkCore v2.1.11
套件:
Microsoft.EntityFrameworkCore v2.2.6
套件:
Microsoft.EntityFrameworkCore v3.0.0
套件:
Microsoft.EntityFrameworkCore v3.1.0
套件:
Microsoft.EntityFrameworkCore v5.0.0
套件:
Microsoft.EntityFrameworkCore v6.0.0
套件:
Microsoft.EntityFrameworkCore v7.0.0
套件:
Microsoft.EntityFrameworkCore v8.0.0

多載

GetOrAdd(IProperty, IEntityType, Func<IProperty,IEntityType,ValueGenerator>)

從快取取得現有的值產生器，如果快取中沒有新的值產生器，則建立新的值產生器。
GetOrAdd(IProperty, ITypeBase, Func<IProperty,ITypeBase,ValueGenerator>)

從快取取得現有的值產生器，如果快取中沒有新的值產生器，則建立新的值產生器。

GetOrAdd(IProperty, IEntityType, Func<IProperty,IEntityType,ValueGenerator>)

從快取取得現有的值產生器，如果快取中沒有新的值產生器，則建立新的值產生器。

public virtual Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator GetOrAdd (Microsoft.EntityFrameworkCore.Metadata.IProperty property, Microsoft.EntityFrameworkCore.Metadata.IEntityType entityType, Func<Microsoft.EntityFrameworkCore.Metadata.IProperty,Microsoft.EntityFrameworkCore.Metadata.IEntityType,Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator> factory);
abstract member GetOrAdd : Microsoft.EntityFrameworkCore.Metadata.IProperty * Microsoft.EntityFrameworkCore.Metadata.IEntityType * Func<Microsoft.EntityFrameworkCore.Metadata.IProperty, Microsoft.EntityFrameworkCore.Metadata.IEntityType, Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator> -> Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator
override this.GetOrAdd : Microsoft.EntityFrameworkCore.Metadata.IProperty * Microsoft.EntityFrameworkCore.Metadata.IEntityType * Func<Microsoft.EntityFrameworkCore.Metadata.IProperty, Microsoft.EntityFrameworkCore.Metadata.IEntityType, Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator> -> Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator
Public Overridable Function GetOrAdd (property As IProperty, entityType As IEntityType, factory As Func(Of IProperty, IEntityType, ValueGenerator)) As ValueGenerator

參數

property
IProperty

要為其取得值產生器的 屬性。

entityType
IEntityType

值產生器將用於的實體類型。 在衍生實體類型上的繼承屬性上呼叫時，此實體類型可能與上宣告的實體類型不同 property

factory
Func<IProperty,IEntityType,ValueGenerator>

如果快取中沒有新的值產生器，則為 Factory 建立新的值產生器。

傳回

ValueGenerator

現有或新建立的值產生器。

實作

GetOrAdd(IProperty, IEntityType, Func<IProperty,IEntityType,ValueGenerator>)

適用於

GetOrAdd(IProperty, ITypeBase, Func<IProperty,ITypeBase,ValueGenerator>)

從快取取得現有的值產生器，如果快取中沒有新的值產生器，則建立新的值產生器。

public virtual Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator GetOrAdd (Microsoft.EntityFrameworkCore.Metadata.IProperty property, Microsoft.EntityFrameworkCore.Metadata.ITypeBase typeBase, Func<Microsoft.EntityFrameworkCore.Metadata.IProperty,Microsoft.EntityFrameworkCore.Metadata.ITypeBase,Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator> factory);
abstract member GetOrAdd : Microsoft.EntityFrameworkCore.Metadata.IProperty * Microsoft.EntityFrameworkCore.Metadata.ITypeBase * Func<Microsoft.EntityFrameworkCore.Metadata.IProperty, Microsoft.EntityFrameworkCore.Metadata.ITypeBase, Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator> -> Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator
override this.GetOrAdd : Microsoft.EntityFrameworkCore.Metadata.IProperty * Microsoft.EntityFrameworkCore.Metadata.ITypeBase * Func<Microsoft.EntityFrameworkCore.Metadata.IProperty, Microsoft.EntityFrameworkCore.Metadata.ITypeBase, Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator> -> Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator
Public Overridable Function GetOrAdd (property As IProperty, typeBase As ITypeBase, factory As Func(Of IProperty, ITypeBase, ValueGenerator)) As ValueGenerator

參數

property
IProperty

要為其取得值產生器的 屬性。

typeBase
ITypeBase

值產生器將用於的實體類型。 在衍生實體類型上的繼承屬性上呼叫時，此實體類型可能與上宣告的實體類型不同 property

factory
Func<IProperty,ITypeBase,ValueGenerator>

如果快取中沒有新的值產生器，則為 Factory 建立新的值產生器。

傳回

ValueGenerator

現有或新建立的值產生器。

實作

GetOrAdd(IProperty, ITypeBase, Func<IProperty,ITypeBase,ValueGenerator>)

適用於