DbFunctionBuilder Class

Reference

Definition

Namespace:: Microsoft.EntityFrameworkCore.Metadata.Builders

Assembly:: Microsoft.EntityFrameworkCore.Relational.dll

Package:: Microsoft.EntityFrameworkCore.Relational v2.0.3

Package:: Microsoft.EntityFrameworkCore.Relational v2.1.11

Package:: Microsoft.EntityFrameworkCore.Relational v2.2.6

Package:: Microsoft.EntityFrameworkCore.Relational v3.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v3.1.0

Package:: Microsoft.EntityFrameworkCore.Relational v5.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v6.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v7.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v8.0.0

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Provides a simple API for configuring a IMutableDbFunction.

public class DbFunctionBuilder

public class DbFunctionBuilder : Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionDbFunctionBuilder

public class DbFunctionBuilder : Microsoft.EntityFrameworkCore.Metadata.Builders.DbFunctionBuilderBase

type DbFunctionBuilder = class

type DbFunctionBuilder = class
    interface IConventionDbFunctionBuilder

type DbFunctionBuilder = class
    inherit DbFunctionBuilderBase

Public Class DbFunctionBuilder

Public Class DbFunctionBuilder
Implements IConventionDbFunctionBuilder

Public Class DbFunctionBuilder
Inherits DbFunctionBuilderBase

Inheritance: Object
DbFunctionBuilder

Inheritance: Object

DbFunctionBuilderBase
DbFunctionBuilder

Implements: IConventionDbFunctionBuilder

Remarks

See Database functions for more information and examples.

Constructors

DbFunctionBuilder(DbFunction)	This API supports the Entity Framework Core infrastructure and is not intended to be used directly from your code. This API may change or be removed in future releases.
DbFunctionBuilder(IMutableDbFunction)	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.

Properties

Builder	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. (Inherited from DbFunctionBuilderBase)
Metadata	The function being configured.
Metadata	The function being configured. (Inherited from DbFunctionBuilderBase)

Methods

HasAnnotation(String, Object)	Adds or updates an annotation on the database function. If an annotation with the key specified in `annotation` already exists, its value will be updated.
HasName(String)	Sets the name of the database function.
HasParameter(String, Action<DbFunctionParameterBuilder>)	Returns an object that can be used to configure a parameter with the given name. If no parameter with the given name exists, then a new parameter will be added.
HasParameter(String, Action<DbFunctionParameterBuilder>)	Returns an object that can be used to configure a parameter with the given name. If no parameter with the given name exists, then a new parameter will be added. (Inherited from DbFunctionBuilderBase)
HasParameter(String)	Creates a DbFunctionParameterBuilder for a parameter with the given name.
HasParameter(String)	Returns an object that can be used to configure a parameter with the given name. If no parameter with the given name exists, then a new parameter will be added. (Inherited from DbFunctionBuilderBase)
HasSchema(String)	Sets the schema of the database function.
HasStoreType(String)	Sets the return store type of the database function.
HasTranslation(Func<IReadOnlyCollection<Expression>,Expression>)	Sets a callback that will be invoked to perform custom translation of this function. The callback takes a collection of expressions corresponding to the parameters passed to the function call. The callback should return an expression representing the desired translation. See https://go.microsoft.com/fwlink/?linkid=852477 for more information.
HasTranslation(Func<IReadOnlyCollection<SqlExpression>,SqlExpression>)	Sets a callback that will be invoked to perform custom translation of this function. The callback takes a collection of expressions corresponding to the parameters passed to the function call. The callback should return an expression representing the desired translation. See https://go.microsoft.com/fwlink/?linkid=852477 for more information.
HasTranslation(Func<IReadOnlyList<SqlExpression>,SqlExpression>)	Sets a callback that will be invoked to perform custom translation of this function. The callback takes a collection of expressions corresponding to the parameters passed to the function call. The callback should return an expression representing the desired translation.
IsBuiltIn(Boolean)	Marks whether the database function is built-in.
IsNullable(Boolean)	Marks whether the database function can return null value.

Explicit Interface Implementations

IConventionDbFunctionBuilder.CanSetName(String, Boolean)	Returns a value indicating whether the given name can be set for the database function.
IConventionDbFunctionBuilder.CanSetSchema(String, Boolean)	Returns a value indicating whether the given schema can be set for the database function.
IConventionDbFunctionBuilder.CanSetStoreType(String, Boolean)	Returns a value indicating whether the given store type can be set for the database function.
IConventionDbFunctionBuilder.CanSetTranslation(Func<IReadOnlyCollection<SqlExpression>,SqlExpression>, Boolean)	Returns a value indicating whether the given translation can be set for the database function.
IConventionDbFunctionBuilder.CanSetTypeMapping(RelationalTypeMapping, Boolean)	Returns a value indicating whether the given return type mapping can be set for the database function.
IConventionDbFunctionBuilder.HasName(String, Boolean)	Sets the name of the database function.
IConventionDbFunctionBuilder.HasSchema(String, Boolean)	Sets the schema of the database function.
IConventionDbFunctionBuilder.HasStoreType(String, Boolean)	Sets the store type of the function in the database.
IConventionDbFunctionBuilder.HasTranslation(Func<IReadOnlyCollection<SqlExpression>,SqlExpression>, Boolean)	Sets a callback that will be invoked to perform custom translation of this function. The callback takes a collection of expressions corresponding to the parameters passed to the function call. The callback should return an expression representing the desired translation. See https://go.microsoft.com/fwlink/?linkid=852477 for more information.
IConventionDbFunctionBuilder.HasTypeMapping(RelationalTypeMapping, Boolean)	Sets the return type mapping of the database function.
IConventionDbFunctionBuilder.Metadata	The function being configured.
IInfrastructure<IConventionDbFunctionBuilder>.Instance	Gets the value of the property being hidden. (Inherited from DbFunctionBuilderBase)

Extension Methods

GetInfrastructure<T>(IInfrastructure<T>)

Gets the value from a property that is being hidden using IInfrastructure<T>.

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

Applies to

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