Class ImageRequestHandler

java.lang.Object

is.galia.resource.ImageRequestHandler

public class ImageRequestHandler
extends Object

High-level image request handler. Use the return value of builder() to create new instances.

This class provides a simple interface that image-serving endpoints can use to convert client arguments into images. Simplicity is achieved by abstracting away as much of the tedium of image request handling (caching, format detection, connecting sources to processors, etc.) as possible. There is also no coupling to any particular image-serving protocol.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	ImageRequestHandler.Builder	Builds ImageRequestHandler instances.
static interface	ImageRequestHandler.Callback	Callback for various events that occur during a call to handle(Response).

Field Summary

Fields

Modifier and Type	Field	Description
static final Set<String>	CACHE_BYPASS_ARGUMENTS	URL argument values that can be used with the cache query key to bypass all caching.
static final Set<String>	CACHE_READ_BYPASS_ARGUMENTS

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ImageRequestHandler()

Method Summary

Modifier and Type	Method	Description
static ImageRequestHandler.Builder	builder()
void	handle(Response response)	Handles an image request.

Methods inherited from class java.lang.Object

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

Field Details

CACHE_BYPASS_ARGUMENTS

public static final Set<String> CACHE_BYPASS_ARGUMENTS

URL argument values that can be used with the cache query key to bypass all caching.

CACHE_READ_BYPASS_ARGUMENTS

public static final Set<String> CACHE_READ_BYPASS_ARGUMENTS

Constructor Details

ImageRequestHandler

protected ImageRequestHandler()

Method Details

builder

public static ImageRequestHandler.Builder builder()

handle

public void handle(Response response)
            throws Exception

Handles an image request.

Parameters:

response - Response to write the resulting image to.

Throws:

Exception