org.geotools.tile.util

Class CachedImageLoader

Object

CachedImageLoader

All Implemented Interfaces:

ImageLoader

public class CachedImageLoader
extends Object
implements ImageLoader

The CachedImageLoader is a simple ImageLoader that uses your disk as a cache for tiles. You can plug this implementation into a Tile object. Note that the TileService also has a cache of its own, but for caching tiles, not necessarily their images.

Image loading is an important performance factor to tile clients. Tests have shown that image loading is more important than image rendering. The risk is, however, to fill your disk with tile images, so make sure to empty the directory from time to time. Also note that some tile service may not allow you to save tile locally. If you do so, you might be breaching licenses. So, be nice.

Since:

12

Author:

Ugo Taddei

Constructor Summary

Constructors

Constructor and Description
CachedImageLoader(File cacheDirectory)

Method Summary

Modifier and Type	Method and Description
BufferedImage	loadImageTileImage(Tile tile) Loads an image for the given tile.

Methods inherited from class Object

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

Constructor Detail

CachedImageLoader

public CachedImageLoader(File cacheDirectory)

Method Detail

loadImageTileImage

public BufferedImage loadImageTileImage(Tile tile)
                                 throws IOException

Description copied from interface: ImageLoader

Loads an image for the given tile.

Specified by:

loadImageTileImage in interface ImageLoader

Returns:

an image

Throws:

IOException