C# Class ImageProcessor.Web.Caching.ImageCacheBase

The image cache base provides methods for implementing the IImageCache interface. It is recommended that any implementations inherit from this class.

Inheritance: IImageCache

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Protected Properties

Property	Type	Description
FullPath	string
Querystring	string
RequestPath	string

Public Methods

Method	Description
AddImageToCacheAsync ( Stream stream, string contentType ) : System.Threading.Tasks.Task	Adds the image to the cache in an asynchronous manner.
CreateCachedFileNameAsync ( ) : Task	Gets a string identifying the cached file name.
IsNewOrUpdatedAsync ( ) : Task	Gets a value indicating whether the image is new or updated in an asynchronous manner.
RewritePath ( HttpContext context ) : void	Rewrites the path to point to the cached image.
TrimCacheAsync ( ) : System.Threading.Tasks.Task	Trims the cache of any expired items in an asynchronous manner.

Protected Methods

Method	Description
AugmentSettings ( string>.Dictionary settings ) : void	Provides a means to augment the cache settings taken from the configuration in derived classes. This allows for configuration of cache objects outside the normal configuration files, for example by using app settings in the Azure platform.
ImageCacheBase ( string requestPath, string fullPath, string querystring ) : System	Initializes a new instance of the ImageCacheBase class.
IsExpired ( System.DateTime creationDate ) : bool	Gets a value indicating whether the given images creation date is out with the prescribed limit.

Private Methods

Method	Description
AugmentSettingsCore ( string>.Dictionary settings ) : string>.Dictionary	Provides an entry point to augmentation of the Settings dictionary

Method Details

AddImageToCacheAsync() public abstract method

Adds the image to the cache in an asynchronous manner.

public abstract AddImageToCacheAsync ( Stream stream, string contentType ) : System.Threading.Tasks.Task
stream	Stream	/// The stream containing the image data. ///
contentType	string	/// The content type of the image. ///
return	System.Threading.Tasks.Task

AugmentSettings() protected method

Provides a means to augment the cache settings taken from the configuration in derived classes. This allows for configuration of cache objects outside the normal configuration files, for example by using app settings in the Azure platform.

protected AugmentSettings ( string>.Dictionary settings ) : void
settings	string>.Dictionary	The current settings.
return	void

CreateCachedFileNameAsync() public method

Gets a string identifying the cached file name.

public CreateCachedFileNameAsync ( ) : Task
return	Task

ImageCacheBase() protected method

Initializes a new instance of the ImageCacheBase class.

protected ImageCacheBase ( string requestPath, string fullPath, string querystring ) : System
requestPath	string	/// The request path for the image. ///
fullPath	string	/// The full path for the image. ///
querystring	string	/// The querystring containing instructions. ///
return	System

IsExpired() protected method

Gets a value indicating whether the given images creation date is out with the prescribed limit.

protected IsExpired ( System.DateTime creationDate ) : bool
creationDate	System.DateTime	/// The creation date. ///
return	bool

IsNewOrUpdatedAsync() public abstract method

Gets a value indicating whether the image is new or updated in an asynchronous manner.

public abstract IsNewOrUpdatedAsync ( ) : Task
return	Task

RewritePath() public abstract method

Rewrites the path to point to the cached image.

public abstract RewritePath ( HttpContext context ) : void
context	System.Web.HttpContext	/// The encapsulating all information about the request. ///
return	void

TrimCacheAsync() public abstract method

Trims the cache of any expired items in an asynchronous manner.

public abstract TrimCacheAsync ( ) : System.Threading.Tasks.Task
return	System.Threading.Tasks.Task

Property Details

FullPath protected_oe property

The full path for the image.

protected string FullPath
return	string

Querystring protected_oe property

The querystring containing processing instructions.

protected string Querystring
return	string

RequestPath protected_oe property

The request path for the image.

protected string RequestPath
return	string