Class IndexBuilder<T>

Namespace

Microsoft.EntityFrameworkCore.Metadata.Builders

Assembly

Microsoft.EntityFrameworkCore.dll

Provides a simple API for configuring an IMutableIndex.

public class IndexBuilder<T> : IndexBuilder, IInfrastructure<IConventionIndexBuilder>

Type Parameters

T

Inheritance

object

IndexBuilder

IndexBuilder<T>

Implements

IInfrastructure<IConventionIndexBuilder>

Inherited Members

IndexBuilder.Metadata

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Extension Methods

AccessorExtensions.GetInfrastructure<T>(IInfrastructure<T>)

Remarks

Instances of this class are returned from methods when using the ModelBuilder API and it is not designed to be directly constructed in your application code.

See Modeling entity types and relationships for more information and examples.

Constructors

IndexBuilder(IMutableIndex)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

[EntityFrameworkInternal]
public IndexBuilder(IMutableIndex index)

Parameters

index IMutableIndex

Methods

HasAnnotation(string, object?)

Adds or updates an annotation on the index. If an annotation with the key specified in annotation already exists its value will be updated.

public virtual IndexBuilder<T> HasAnnotation(string annotation, object? value)

Parameters

annotation string

The key of the annotation to be added or updated.

value object

The value to be stored in the annotation.

Returns

IndexBuilder<T>

The same builder instance so that multiple configuration calls can be chained.

IsDescending(params bool[])

Configures the sort order(s) for the columns of this index (ascending or descending).

public virtual IndexBuilder<T> IsDescending(params bool[] descending)

Parameters

descending bool[]

A set of values indicating whether each corresponding index column has descending sort order. An empty list indicates that all index columns will have descending sort order.

Returns

IndexBuilder<T>

The same builder instance so that multiple configuration calls can be chained.

IsUnique(bool)

Configures whether this index is unique (i.e. the value(s) for each instance must be unique).

public virtual IndexBuilder<T> IsUnique(bool unique = true)

Parameters

unique bool

A value indicating whether this index is unique.

Returns

IndexBuilder<T>

The same builder instance so that multiple configuration calls can be chained.