ClearDatabaseSchemaIfModelChanges<TContext> Class

Article
05/25/2016

An implementation of IDatabaseInitializer<TContext> that will DELETE all resources (e.g. tables, views, functions, and procedures) within a given database schema, and optionally re-seed the database only if the model has changed since the database was created. This implementation of IDatabaseInitializer<TContext> is useful if the current user only has permission to access resources within a particular database schema and not the entire database.

Namespace: Microsoft.WindowsAzure.Mobile.Service
Assembly: Microsoft.WindowsAzure.Mobile.Service.Entity (in Microsoft.WindowsAzure.Mobile.Service.Entity.dll)

Inheritance Hierarchy

System.Object
System.Data.Entity.CreateDatabaseIfNotExists<TContext>
Microsoft.WindowsAzure.Mobile.Service.ClearDatabaseSchemaAlways<TContext>
Microsoft.WindowsAzure.Mobile.Service.ClearDatabaseSchemaIfModelChanges<TContext>

Syntax

public class ClearDatabaseSchemaIfModelChanges<TContext> : ClearDatabaseSchemaAlways<TContext>
where TContext : DbContext

generic<typename TContext>
where TContext : DbContext
public ref class ClearDatabaseSchemaIfModelChanges : ClearDatabaseSchemaAlways<TContext>

type ClearDatabaseSchemaIfModelChanges<'TContext when 'TContext : DbContext> = 
    class
        inherit ClearDatabaseSchemaAlways<'TContext>
    end

Public Class ClearDatabaseSchemaIfModelChanges(Of TContext As DbContext)
    Inherits ClearDatabaseSchemaAlways(Of TContext)

Type Parameters

TContext
The type of DbContext.

Constructors

	Name	Description
	ClearDatabaseSchemaIfModelChanges<TContext>()	Initializes a new instance of the ClearDatabaseSchemaAlways<TContext> that will DELETE all resources from the default schema derived from the service name in case the model has changed.
	ClearDatabaseSchemaIfModelChanges<TContext>(String)	Initializes a new instance of the ClearDatabaseSchemaIfModelChanges<TContext> class with a given schema.

Properties

	Name	Description
	Schema	Gets the schema to DELETE all resources from.(Inherited from ClearDatabaseSchemaAlways<TContext>.)

Methods

	Name	Description
	DeleteAllResourcesFromSchema(TContext)	DELETE all resources from the Schema.(Inherited from ClearDatabaseSchemaAlways<TContext>.)
	Equals(Object)	(Inherited from Object.)
	Finalize()	(Inherited from Object.)
	GetHashCode()	(Inherited from Object.)
	GetType()	(Inherited from Object.)
	InitializeDatabase(TContext)	(Overrides ClearDatabaseSchemaAlways<TContext>.InitializeDatabase(TContext).)
	MemberwiseClone()	(Inherited from Object.)
	Seed(TContext)	(Inherited from CreateDatabaseIfNotExists<TContext>.)
	ToString()	(Inherited from Object.)

Remarks

Whether or not the model has changed is determined by the CompatibleWithModel method. To seed the database create a derived class and override the Seed method.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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