Partition Class

项目
07/25/2011

Provides a logical container for elements in a store.

Inheritance Hierarchy

System.Object
Microsoft.VisualStudio.Modeling.Partition

Namespace: Microsoft.VisualStudio.Modeling
Assembly: Microsoft.VisualStudio.Modeling.Sdk.10.0 (in Microsoft.VisualStudio.Modeling.Sdk.10.0.dll)

Syntax

声明
Public NotInheritable Class Partition _
    Implements IDisposable

public sealed class Partition : IDisposable

public ref class Partition sealed : IDisposable

[<Sealed>]
type Partition =  
    class
        interface IDisposable
    end

public final class Partition implements IDisposable

The Partition type exposes the following members.

Constructors

	Name	Description
	Partition	Constructor

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Properties

	Name	Description
	AlternateId	The AlternateId is used in the
	Contexts	The Contexts that are referenced by the Partition. The Dictionary keys are the IDs of the Contexts. The Dictionary values are the Context instances.
	DirtyCount	Indicates the number of changes to the Partition.
	DomainDataDirectory	Gets domain information directory of the Store this partition belongs to.
	ElementDirectory	Directory of elements contained within partition.
	ElementFactory	The ElementFactory for the model
	Id	The Id of this Partition.
	IsDirty	Indicates true when the Partition is in a dirty state.
	IsReadOnly	Gets whether this partition is read-only.
	StateId	A StateId that defines what state this Partition object is in.
	Store	The Store the Partition belongs to.

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Methods

	Name	Description
	AddContext	Add context to partition
	DeleteElements	Delete the object graphs rooted in the specified collection of elements.
	Dispose	Disposes the state of this object.
	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.)
	FindByAlternateId	Find a partition by its AlternateKey
	GetClosureList(ICollection<ModelElement>, ClosureType)	Gets a closure list of the given type based on the given root element list
	GetClosureList(ICollection<ModelElement>, ClosureType, Boolean)	Gets a closure list of the given type based on the given root element list
	GetClosureList(ICollection<ModelElement>, ClosureType, IEnumerable<DomainRoleInfo>)	Gets a closure list of the given type based on the given root element list
	GetClosureList(ICollection<ModelElement>, ClosureType, Boolean, IEnumerable<DomainRoleInfo>)	Gets a closure list of the given type based on the given root element list
	GetClosureList(ICollection<ModelElement>, ClosureType, IEnumerable<DomainRoleInfo>, IEnumerable<DomainRoleInfo>)	Gets a closure list of the given type based on the given root element list
	GetClosureList(ICollection<ModelElement>, ClosureType, Boolean, IEnumerable<DomainRoleInfo>, IEnumerable<DomainRoleInfo>)	Gets a closure list of the given type based on the given root element list
	GetClosurePrototypeGroup(ICollection<ModelElement>, ClosureType)	Creates an ElementGroupPrototype of the given closure type based on the given list of root Elements
	GetClosurePrototypeGroup(ICollection<ModelElement>, ClosureType, Boolean)	Creates an ElementGroupPrototype of the given closure type based on the given list of root Elements
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	RemoveContext	Method to remove a Context from the Partition
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Events

	Name	Description
	PartitionDisposing	Allows clients to receive PartitionDisposing events

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Extension Methods

	Name	Description
	CanDeleteElements	Query whether a specified set of elements can be deleted, taking into account any IMS locks applicable to any of the elements in the complete delete closure of the elements. The elements cannot be deleted if any element in the closure is Delete locked, or if any element is the target of a link sourced on an element with the RolePlayer lock AND that element is outside the closure. (Defined by ImmutabilityExtensionMethods.)
	GetLocks	Get the lock flags for this Partition instance. This will include any locks enabled on the Store containing the partition. (Defined by ImmutabilityExtensionMethods.)
	IsLocked	Test whether this partition has any of a specified set of locks (Defined by ImmutabilityExtensionMethods.)
	SetLocks	Set the lock flags of the specified Partition instance (Defined by ImmutabilityExtensionMethods.)

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Remarks

A store can have any number of partitions. In most cases, a store only uses one partition, which is called the default partition. If you don't make any changes to the default behavior, all elements are in the default partition.

When you create an element, you can indicate which partition you want it to be created in.

Partitions provide away for you to divide the elements and links of a model into different logical groups. One reason for using multiple partitions is to isolate the undo and redo actions into different queues in the different partitions. Undo and redo actions are applied to a partition.

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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