Class FileCacheBase

The base file cache class.

Inheritance
System.Object
MemoryCache
FileCacheBase
FileSystemCache
IsolatedStorageCache
Inherited Members
Namespace: Telerik.Windows.Controls.Map
Assembly: Telerik.Windows.Controls.DataVisualization.dll

Syntax

public abstract class FileCacheBase : MemoryCache, ICacheStorage

Constructors

FileCacheBase()

Initializes a new instance of the FileCacheBase class.

Declaration
protected FileCacheBase()

Fields

CachePathProperty

Identifies the CachePath dependency property.

Declaration
public static readonly DependencyProperty CachePathProperty
Field Value
System.Windows.DependencyProperty

MaxExpirationTimeProperty

Identifies the MaxExpiresTime dependency property.

Declaration
public static readonly DependencyProperty MaxExpirationTimeProperty
Field Value
System.Windows.DependencyProperty

MaxSizeProperty

Identifies the MaxSize dependency property.

Declaration
public static readonly DependencyProperty MaxSizeProperty
Field Value
System.Windows.DependencyProperty

MinExpirationTimeProperty

Identifies the MinExpiresTime dependency property.

Declaration
public static readonly DependencyProperty MinExpirationTimeProperty
Field Value
System.Windows.DependencyProperty

Properties

CachePath

Gets or sets the path to files for a storage. This is a dependency property.

Declaration
public string CachePath { get; set; }
Property Value
System.String

MaxExpirationTime

Gets or sets the maximal expiration timespan for a file in cache. This is a dependency property.

Declaration
public TimeSpan MaxExpirationTime { get; set; }
Property Value
System.TimeSpan

MaxSize

Gets or sets the maximal cache size for a storage. Zero value specifies unlimited cache. This is a dependency property.

Declaration
public long MaxSize { get; set; }
Property Value
System.Int64

MinExpirationTime

Gets or sets the minimal expiration timespan for a file in cache. This is a dependency property.

Declaration
public TimeSpan MinExpirationTime { get; set; }
Property Value
System.TimeSpan

Methods

CreateCacheStream(String)

Creates cache stream.

Declaration
protected abstract Stream CreateCacheStream(string fileName)
Parameters
System.String fileName

File name.
Returns
System.IO.Stream

Stream to saving into cache.

Dispose()

Dispose all resources are used by the FileCacheBase.

Declaration
public void Dispose()

GetFiles(String, String)

Obtains files.

Declaration
protected abstract string[] GetFiles(string cachePath, string fileMask)
Parameters
System.String cachePath

Cache path.
System.String fileMask

File mask.
Returns
System.String[]

Array of file names.

GetFullFilePath(String)

Returns full file path.

Declaration
protected string GetFullFilePath(string fileName)
Parameters
System.String fileName

File name.
Returns
System.String

Full file path.

Load(String)

Loads the file from the storage.

Declaration
public override Stream Load(string fileName)
Parameters
System.String fileName

File name.
Returns
System.IO.Stream

Stream if the file exists and does not expired or null.
Overrides

LoadAsync(String, Action<Byte[]>)

Loaded file from a cache to event arguments.

Declaration
public override void LoadAsync(string fileName, Action<byte[]> callback)
Parameters
System.String fileName

File name.
System.Action<System.Byte[]> callback

Callback which should be called to return tile if it is available or null.
Overrides

LoadFileMetadata(String)

Loads file metadata.

Declaration
protected abstract MemoryCache.ICacheRecordMetadata LoadFileMetadata(string fileName)
Parameters
System.String fileName

File name.
Returns
MemoryCache.ICacheRecordMetadata

ICacheRecordMetadata implementation instance.

OnCachePathChanged(String, String)

Calls when the cache path is changed.

Declaration
protected virtual void OnCachePathChanged(string oldValue, string newValue)
Parameters
System.String oldValue

Old path.
System.String newValue

New path.

OnMaxSizeChanged()

Sets thread safety max size value.

Declaration
protected virtual void OnMaxSizeChanged()

OpenCacheStream(String)

Gets cache stream.

Declaration
protected abstract Stream OpenCacheStream(string fileName)
Parameters
System.String fileName

File name.
Returns
System.IO.Stream

Stream to loading from cache.

RemoveFile(String)

Removes file from cache storage.

Declaration
protected abstract void RemoveFile(string fileName)
Parameters
System.String fileName

File name.

Save(String, DateTime, Byte[])

Saves the file to the storage.

Declaration
public override void Save(string fileName, DateTime expirationDate, byte[] tile)
Parameters
System.String fileName

File name.
System.DateTime expirationDate

Expiration date.
System.Byte[] tile

Byte array which is saved to the file.
Overrides

SaveFileMetadata(MemoryCache.ICacheRecordMetadata)

Saves file metadata.

Declaration
protected abstract void SaveFileMetadata(MemoryCache.ICacheRecordMetadata cacheRecord)
Parameters
MemoryCache.ICacheRecordMetadata cacheRecord

Cache record metadata.

Extension Methods