UserRoleCache Class

Represents a secured inter-process cache for a DictionaryTKey, TValue of serialized user role information.

Inheritance Hierarchy

SystemObject
GSF.IOInterprocessCache
GSF.SecurityUserRoleCache

Namespace: GSF.Security
Assembly: GSF.Security (in GSF.Security.dll) Version: 2.4.257-beta

Syntax

C++

JavaScript

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public class UserRoleCache : InterprocessCache

Public Class UserRoleCache
	Inherits InterprocessCache

public ref class UserRoleCache : public InterprocessCache

type UserRoleCache = 
    class
        inherit InterprocessCache
    end

GSF.Security.UserRoleCache = function();

Type.createClass(
	'GSF.Security.UserRoleCache',
	GSF.IO.InterprocessCache);

View Source

The UserRoleCache type exposes the following members.

Constructors

	Name	Description
	UserRoleCache	Creates a new instance of the UserRoleCache with the specified number of maximumConcurrentLocks.

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Properties

	Name	Description
	AutoSave	Gets or sets flag that determines if InterprocessCache should automatically initiate a save when FileData has been updated. (Inherited from InterprocessCache)
	FileData	Gets or sets file data for the cache to be saved or that has been loaded. (Inherited from InterprocessCache)
	FileName	Path and file name for the cache needing inter-process synchronization. (Inherited from InterprocessCache)
	Item	Gets or sets access roles for given userName.
	MaximumConcurrentLocks	Gets the maximum concurrent reader locks allowed. (Inherited from InterprocessCache)
	MaximumRetryAttempts	Maximum retry attempts allowed for loading or saving cache file data. (Inherited from InterprocessCache)
	ReloadOnChange	Gets or sets flag that enables system to monitor for changes in FileName and automatically reload FileData. (Inherited from InterprocessCache)
	RetryDelayInterval	Wait interval, in milliseconds, before retrying load or save of cache file data. (Inherited from InterprocessCache)
	UserRoles	Gets a copy of the internal user role dictionary.

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Methods

	Name	Description
	Dispose	Releases all the resources used by the InterprocessCache object. (Inherited from InterprocessCache)
	Dispose(Boolean)	Releases the unmanaged resources used by the InterprocessCache object and optionally releases the managed resources. (Inherited from InterprocessCache)
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
	Finalize	Releases the unmanaged resources before the InterprocessCache object is reclaimed by GC. (Inherited from InterprocessCache)
	GetCurrentCache	Loads the UserRoleCache for the current local user.
	GetHashCode	Serves as the default hash function. (Inherited from Object)
	GetType	Gets the Type of the current instance. (Inherited from Object)
	HashLoginID	Calculates the hash of the userName used as the key for the user roles dictionary.
	Load	Initiates inter-process synchronized cache file load. (Inherited from InterprocessCache)
	LoadFileData	Handles deserialization of file from disk; virtual method allows customization (e.g., pre-load decryption and/or data merge). (Overrides InterprocessCacheLoadFileData(FileStream))
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object)
	MergeLeft	Merge user roles from another UserRoleCache, local cache taking precedence.
	MergeRight	Merge user roles from another UserRoleCache, other cache taking precedence.
	Save	Initiates inter-process synchronized save of user role cache. (Overrides InterprocessCacheSave)
	SaveFileData	Handles serialization of file to disk; virtual method allows customization (e.g., pre-save encryption and/or data merge). (Overrides InterprocessCacheSaveFileData(FileStream, Byte))
	SaveUserRole	Serializes the roles for the given userName into the UserRoleCache.
	ToString	Returns a string that represents the current object. (Inherited from Object)
	TryGetUserRole	Attempts to retrieve access role for given userName.
	WaitForLoad	Blocks current thread and waits for any pending load to complete; wait time is RetryDelayInterval * MaximumRetryAttempts. (Inherited from InterprocessCache)
	WaitForLoad(Int32)	Blocks current thread and waits for specified millisecondsTimeout for any pending load to complete. (Inherited from InterprocessCache)
	WaitForSave	Blocks current thread and waits for any pending save to complete; wait time is RetryDelayInterval * MaximumRetryAttempts. (Inherited from InterprocessCache)
	WaitForSave(Int32)	Blocks current thread and waits for specified millisecondsTimeout for any pending save to complete. (Inherited from InterprocessCache)

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Extension Methods

	Name	Description
	GetEnumValueOrDefault	Gets the enumeration constant for value, if defined in the enumeration, or a default value. (Defined by EnumExtensions)
	GetEnumValueOrDefaultT	Gets the enumeration constant for this value, if defined in the enumeration, or a default value. (Defined by EnumExtensions)

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Remarks

This is a system cache that contains the role assignments for each user that has logged in successfully. This cache is used to check for changes in role assignments for a user - that is, a role change in the database that may now be different than what is in the current cache. Any kind of role changes are logged as security events in the Windows event log for auditing. Note that this is kept as a separate cache from the AdoSecurityCache since the user role cache is used for auditing and contains information relative to a user's roles at last login.

Reference

GSF.Security Namespace