info.magnolia.imaging.caching

Interface CachingStrategy<P>

Type Parameters:

P - type of ParameterProvider's parameter

All Known Implementing Classes:

AbstractContentBasedCachingStrategy, AbstractNodeBasedCachingStrategy, ContentBasedCachingStrategy, NodeBasedCachingStrategy, NodeDataBasedCachingStrategy, NullCachingStrategy

public interface CachingStrategy<P>

Defines a CachingStrategy.

Method Summary

Modifier and Type	Method and Description
String	getCachePath(ImageGenerator<ParameterProvider<P>> generator, ParameterProvider<P> parameterProvider) Returns a unique path pertinent to the given generator and parameter to use for storing the generated image.
boolean	shouldRegenerate(info.magnolia.cms.core.NodeData cachedBinary, ParameterProvider<P> parameterProvider) Given the currently cached generated image, determine if CachingImageStreamer should regenerate the image.

Method Detail

getCachePath

String getCachePath(ImageGenerator<ParameterProvider<P>> generator,
                    ParameterProvider<P> parameterProvider)

Returns a unique path pertinent to the given generator and parameter to use for storing the generated image. Returns null if the implementation determines caching should not occur.

shouldRegenerate

boolean shouldRegenerate(info.magnolia.cms.core.NodeData cachedBinary,
                         ParameterProvider<P> parameterProvider)

Given the currently cached generated image, determine if CachingImageStreamer should regenerate the image. Implementations will most likely simply compare the timestamp with their parameter if applicable, or use some other mechanism.