org.springframework.web.servlet.resource

Class DefaultResourceTransformerChain

java.lang.Object

org.springframework.web.servlet.resource.DefaultResourceTransformerChain

All Implemented Interfaces:

ResourceTransformerChain

class DefaultResourceTransformerChain
extends java.lang.Object
implements ResourceTransformerChain

A default implementation of ResourceTransformerChain for invoking a list of ResourceTransformers.

Since:

4.1

Author:

Rossen Stoyanchev

Field Summary

Fields

Modifier and Type	Field and Description
private int	index
private ResourceResolverChain	resolverChain
private java.util.List<ResourceTransformer>	transformers

Constructor Summary

Constructors

Constructor and Description
DefaultResourceTransformerChain(ResourceResolverChain resolverChain, java.util.List<ResourceTransformer> transformers)

Method Summary

Modifier and Type	Method and Description
private ResourceTransformer	getNext()
ResourceResolverChain	getResolverChain() Return the ResourceResolverChain that was used to resolve the Resource being transformed.
Resource	transform(HttpServletRequest request, Resource resource) Transform the given resource.

Methods inherited from class java.lang.Object

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

Field Detail

resolverChain

private final ResourceResolverChain resolverChain

transformers

private final java.util.List<ResourceTransformer> transformers

index

private int index

Constructor Detail

DefaultResourceTransformerChain

public DefaultResourceTransformerChain(ResourceResolverChain resolverChain,
                                       java.util.List<ResourceTransformer> transformers)

Method Detail

getResolverChain

public ResourceResolverChain getResolverChain()

Description copied from interface: ResourceTransformerChain

Return the ResourceResolverChain that was used to resolve the Resource being transformed. This may be needed for resolving related resources, e.g. links to other resources.

Specified by:

getResolverChain in interface ResourceTransformerChain

transform

public Resource transform(HttpServletRequest request,
                          Resource resource)
                   throws java.io.IOException

Description copied from interface: ResourceTransformerChain

Transform the given resource.

Specified by:

transform in interface ResourceTransformerChain

Parameters:

request - the current request

resource - the candidate resource to transform

Returns:

the transformed or the same resource, never null

Throws:

java.io.IOException - if transformation fails

getNext

private ResourceTransformer getNext()