Page Class

Each Database consist of a number of variable sized pages. A page can be compressed and may be encrypted and contains one or more objects. Page compression is controlled by the DatabaseLocation of the Database containing a page. Each page has a PageInfo that provides info about a page and can be updated to turn on/off compression and encryption for a specific page.

Inheritance Hierarchy

SystemObject
VelocityDbPage

Namespace: VelocityDb
Assembly: VelocityDb (in VelocityDb.dll) Version: 11.1.0.0 (11.1)

Syntax

C++

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public class Page : IComparable<Page>, IEnumerable<IOptimizedPersistable>, 
	IEnumerable, IDisposable

Public Class Page
	Implements IComparable(Of Page), IEnumerable(Of IOptimizedPersistable), 
	IEnumerable, IDisposable

public ref class Page : IComparable<Page^>, 
	IEnumerable<IOptimizedPersistable^>, IEnumerable, IDisposable

type Page =  
    class
        interface IComparable<Page>
        interface IEnumerable<IOptimizedPersistable>
        interface IEnumerable
        interface IDisposable
    end

The Page type exposes the following members.

Constructors

	Name	Description
	Page	Internal use and usage in VelocityDbExteanions project

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Properties

	Name	Description
	ByteCount
	Database	The Database of this Page.
	Id	The Oid (encoded as UInt64) of this page
	IsUpdated	Is this Page updated?
	Offset	Current page version starts at this offset in conatining Database.
	Oid	The Oid of this page
	OnlyStub	Is this Page fully read into memory or just the PageInfo?
	PageInfo	Gets the PageInfo for this Page
	PageNumber	The page number of this Page in the containing Database
	ShortId	The OidShort (encoded as UInt32) of this page

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Methods

	Name	Description
	ClearCashedObjects	Clears all objects cached on the page but does not clear objects cached by weak references.
	CompareTo	Compares Pages by PageNumber
	DeleteObject	Use this as an alternative to Unpersist(SessionBase) or when using the interface class IOptimizedPersistable
	Dispose	Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
	FinishUpCsvImport	Schema page requires special handling in Import from CSV files
	GetEnumerator	Enumerates all objects on this Page
	ObjectsLazyLoaded	Enumerates all objects on this Page. Object graph loaded up to specified max depth.
	PageShortIds	Enumerates all objects short ids on this Page
	Slot	Retrieves an object from persistent storage
	StringToByteArray	Converts a string into an UTF8 encoded byte array
	ToString	Returns a string that represents the current object. (Overrides ObjectToString.)
	UnpersistObject	Use this as an alternative to Unpersist(SessionBase) or when using the interface class IOptimizedPersistable

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Reference

VelocityDb Namespace