CachingResourceTransformer (Spring Framework 4.3.30.RELEASE API)

java.lang.Object
- org.springframework.web.servlet.resource.CachingResourceTransformer

All Implemented Interfaces:
ResourceTransformer
```
public class CachingResourceTransformer
extends Object
implements ResourceTransformer
```
A ResourceTransformer that checks a Cache to see if a previously transformed resource exists in the cache and returns it if found, and otherwise delegates to the resolver chain and saves the result in the cache.
Since:
4.1
Author:
Rossen Stoyanchev

Constructor Summary
Constructors
Constructor Description
CachingResourceTransformer(Cache cache)
CachingResourceTransformer(CacheManager cacheManager, String cacheName)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Cache`	`getCache()`	Return the configured `Cache`.
`Resource`	`transform(HttpServletRequest request, Resource resource, ResourceTransformerChain transformerChain)`	Transform the given resource.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CachingResourceTransformer

public CachingResourceTransformer(CacheManager cacheManager,
                                  String cacheName)

CachingResourceTransformer

public CachingResourceTransformer(Cache cache)

Method Detail
- getCache
```
public Cache getCache()
```
  Return the configured Cache.
- transform
```
public Resource transform(HttpServletRequest request,
                          Resource resource,
                          ResourceTransformerChain transformerChain)
                   throws IOException
```
  Description copied from interface: ResourceTransformer
  Transform the given resource.
  Specified by:
  transform in interface ResourceTransformer
  Parameters:
  request - the current request
  resource - the resource to transform
  transformerChain - the chain of remaining transformers to delegate to
  Returns:
  the transformed resource (never null)
  Throws:
  IOException - if the transformation fails