Class ValueGeneratorCache

Namespace

Microsoft.EntityFrameworkCore.ValueGeneration

Assembly

Microsoft.EntityFrameworkCore.dll

Keeps a cache of value generators for properties.

This type is typically used by database providers (and other extensions). It is generally not used in application code.

public class ValueGeneratorCache : IValueGeneratorCache

Inheritance

object

ValueGeneratorCache

Implements

IValueGeneratorCache

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Remarks

The service lifetime is Singleton. This means a single instance is used by many DbContext instances. The implementation must be thread-safe. This service cannot depend on services registered as Scoped.

See Implementation of database providers and extensions for more information and examples.

Constructors

ValueGeneratorCache(ValueGeneratorCacheDependencies)

Initializes a new instance of the ValueGeneratorCache class.

public ValueGeneratorCache(ValueGeneratorCacheDependencies dependencies)

Parameters

dependencies ValueGeneratorCacheDependencies

Parameter object containing dependencies for this service.

Properties

Dependencies

Dependencies for this service.

protected virtual ValueGeneratorCacheDependencies Dependencies { get; }

Property Value

ValueGeneratorCacheDependencies

Methods

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

Gets the existing value generator from the cache, or creates a new one if one is not present in the cache.

public virtual ValueGenerator GetOrAdd(IProperty property, ITypeBase typeBase, Func<IProperty, ITypeBase, ValueGenerator> factory)

Parameters

property IProperty

The property to get the value generator for.

typeBase ITypeBase

The entity type that the value generator will be used for. When called on inherited properties on derived entity types, this entity type may be different from the declared entity type on property

factory Func<IProperty, ITypeBase, ValueGenerator>

Factory to create a new value generator if one is not present in the cache.

Returns

ValueGenerator

The existing or newly created value generator.