org.apache.tapestry5.internal.services.assets

Class DelegatingSRS

java.lang.Object

org.apache.tapestry5.internal.services.assets.DelegatingSRS

All Implemented Interfaces:

StreamableResourceSource

Direct Known Subclasses:

CSSURLRewriter, JavaScriptStackMinimizeDisabler, SRSCachingInterceptor, SRSCompressingInterceptor, SRSMinimizingInterceptor, UTF8ForTextAssets

public abstract class DelegatingSRS
extends Object
implements StreamableResourceSource

Base class for StreamableResourceSource implementations.

Since:

5.4

Field Summary

Fields

Modifier and Type	Field and Description
protected StreamableResourceSource	delegate

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DelegatingSRS(StreamableResourceSource delegate)

Method Summary

Methods

Modifier and Type	Method and Description
Set<String>	fileExtensionsForContentType(ContentType contentType) Given a desired content type, identify which file extensions can be mapped to that extension based on contributed ResourceTransformers that can produce the content type based for a file with that extension.
StreamableResource	getStreamableResource(Resource baseResource, StreamableResourceProcessing processing, ResourceDependencies dependencies) Converts a Resource (which must be non-null and exist) into a streamable resource, along with some additional optional behaviors.

Methods inherited from class java.lang.Object

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

Field Detail

delegate

protected final StreamableResourceSource delegate

Constructor Detail

DelegatingSRS

protected DelegatingSRS(StreamableResourceSource delegate)

Method Detail

fileExtensionsForContentType

public Set<String> fileExtensionsForContentType(ContentType contentType)

Description copied from interface: StreamableResourceSource

Given a desired content type, identify which file extensions can be mapped to that extension based on contributed ResourceTransformers that can produce the content type based for a file with that extension.

Specified by:

fileExtensionsForContentType in interface StreamableResourceSource

Parameters:

contentType - to search for (just a MIME type, such as "text/javascript")

Returns:

set of file extension, possibly empty, in no particular order. These are the bare extensions, e.g., "js", "coffee".

getStreamableResource

public StreamableResource getStreamableResource(Resource baseResource,
                                       StreamableResourceProcessing processing,
                                       ResourceDependencies dependencies)
                                         throws IOException

Description copied from interface: StreamableResourceSource

Converts a Resource (which must be non-null and exist) into a streamable resource, along with some additional optional behaviors.

Specified by:

getStreamableResource in interface StreamableResourceSource

Parameters:

baseResource - the resource to convert

processing - defines additional processing after the resource has been read and possibly transformed

dependencies - Passed to any ResourceTransformer to track additional dependencies of the base resource

Returns:

the contents of the Resource, possibly transformed, in a streamable format.

Throws:

IOException - if the resource does not exist or a URL for the content is not available