oracle.cabo.image.cache
Class FileSystemImageCache

java.lang.Object
  |
  +--oracle.cabo.image.cache.FileSystemImageCache

All Implemented Interfaces:

ImageConstants, ImageProvider

public class FileSystemImageCache

extends java.lang.Object

implements ImageProvider, ImageConstants

FileSystemImageCache is an ImageProvider implementation which caches images on the file system. Since the FileSystemImageCache are fairly expensive objects to create, FileSystemImageCache instances are shared across applications in the same VM. Clients can access the shared FileSystemImageCache instance for a particular file system cache location via the getSharedCache method.

See Also:

ImageProvider

Fields inherited from interface oracle.cabo.image.ImageConstants

ACCESS_KEY_KEY, BACKGROUND_KEY, BORDER_COLOR_KEY, BUTTON_NAME, COLORIZED_ICON_NAME, DARK_ACCENT_COLOR_KEY, DARK_COLOR_KEY, DIRECTION_KEY, DISABLED_BACKGROUND_KEY, DISABLED_FONT_KEY, DISABLED_FOREGROUND_KEY, DISABLED_KEY, ENCODING_TYPE_KEY, END_ROUNDED_KEY, FLIPPED_ICON_NAME, FONT_KEY, FOREGROUND_KEY, GLOBAL_BUTTON_NAME, HEIGHT_RESPONSE_KEY, IMAGE_MAP_AREAS_RESPONSE_KEY, IMAGE_PROVIDER_PROPERTY, IMAGE_TYPE_MANAGER_PROPERTY, LAF_KEY, NAME_KEY, SELECTED_BACKGROUND_KEY, SELECTED_FONT_KEY, SELECTED_FOREGROUND_KEY, SELECTED_INDEX_KEY, SELECTED_KEY, SERVLET_URL_PROPERTY, SOURCE_INPUT_STREAM_PROVIDER_KEY, SOURCE_KEY, START_ROUNDED_KEY, SURROUNDING_COLOR_KEY, TAB_BAR_NAME, TABS_KEY, TECATE_NAMESPACE, TEXT_ANTIALIAS_KEY, TEXT_KEY, WIDTH_RESPONSE_KEY

Constructor Summary

protected

FileSystemImageCache(java.lang.String realPath) Creates a FileSystemImageCache.

Method Summary

ImageProviderResponse	getImage(ImageContext context, ImageProviderRequest request) Implementation of ImageCache.getImage().
static ImageProvider	getSharedCache(java.lang.String realPath) Returns a shared cache instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FileSystemImageCache

protected FileSystemImageCache(java.lang.String realPath)

Creates a FileSystemImageCache. Clients should use getSharedCache() to obtain FileSystemImageCache instances.

Parameters:

realPath - The real path of the root directory of the cache. If the specified path does not exist and can not be created, and IllegalArgumentException is thrown.

Method Detail

getSharedCache

public static ImageProvider getSharedCache(java.lang.String realPath)

Returns a shared cache instance.

Parameters:

realPath - The real path of the root directory of the cache. If the specified path does not exist and can not be created, and IllegalArgumentException is thrown.

Returns:

Returns an ImageProvider instance which can be used to obtain cached images.

getImage

public ImageProviderResponse getImage(ImageContext context,
                                      ImageProviderRequest request)

Implementation of ImageCache.getImage().

Specified by:

getImage in interface ImageProvider

See Also:

ImageProvider.getImage(oracle.cabo.image.ImageContext, oracle.cabo.image.ImageProviderRequest)