ModelSchema Class

Artikel
11/05/2012

Represents the metadata that is required to instantiate a ModelStore.

Inheritance Hierarchy

System.Object
Microsoft.Data.Schema.SchemaModel.ModelSchema

Namespace: Microsoft.Data.Schema.SchemaModel
Assembly: Microsoft.Data.Schema (in Microsoft.Data.Schema.dll)

Syntax

'Declaration
Public NotInheritable Class ModelSchema

public sealed class ModelSchema

public ref class ModelSchema sealed

[<Sealed>]
type ModelSchema =  class end

public final class ModelSchema

The ModelSchema type exposes the following members.

Properties

	Name	Description
	AnnotationClasses	Gets a list of annotation metadata objects.
	ElementClasses
	MaxIdentifierPartLength	Gets the maximum length of any part of a model identifier.
	MaxIdentifierParts	Represents the maximum number of identifier parts that can be in a model identifier.
	RootParentElementClasses	Gets all the element metadata objects that are root parents of any composed or hierarchical relationships for this model.
	Version	Gets or sets the schema version.

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Methods

	Name	Description
	AddAnnotationClass	Adds an annotation class to this schema.
	AddElementClass	Adds an element class to this schema.
	CreateIdentifierGroup	Creates an identifier group.
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	FindAnnotationClass(String)	Finds and returns the annotation metadata object by name.
	FindAnnotationClass(Type)	Returns the annotation metadata object that is associated with an annotation of the given type.
	FindElementClass(String)	Finds and returns the element metadata object that has the matching name.
	FindElementClass(Type)	Finds and returns the element metadata object for the element that implements the given type.
	GetAllLevelChildElementClasses
	GetAllLevelParentElementClasses
	GetChildElementClasses	Gets a list of composed or hierarchical children of an element metadata object.
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetImplementingElementClasses	Returns the list of element metadata objects that are associated with elements that implement the given interface.
	GetInstantiatingAnnotationClass	Returns the annotation metadata object that is used to instantiate the given type.
	GetInstantiatingElementClass	Returns the element metadata object that is used to instantiate the given type.
	GetInstantiatingElementClassMapping	Returns the mapping of element metadata objects to interface types.
	GetInterfaceTypeByName	Returns the type that matches the given interface name.
	GetParentElementClasses(Type)	Gets direct composed or hierarchical parent element metadata objects for a specified interface type.
	GetParentElementClasses(ModelElementClass)	Gets direct composed or hierarchical parents for a given element metadata object.
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	HasComposingParent
	HasHierarchicalParent
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	SetupIdentifierCreation
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Fields

	Name	Description
	MaxPossibleIdentifierParts	Represents the maximum possible number of identifier parts that can be in a model identifier.

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Remarks

One of the important initialization steps of a DatabaseSchemaProvider (DSP) is the population of a ModelSchema object. The concrete implementation of the RegisterStoreTypes(ModelSchema) is passed a ModelSchema instance, which the implementation must then use to register elements, properties, relationships, and annotations that describe the model.

Once a ModelSchema object is created, the instance is reused for the life of the DSP instance in order to instantiate DSP-derived (and therefore ModelStore-derived) objects.

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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