org.apache.tapestry5.services.assets

Interface ResourceTransformer

All Known Implementing Classes:

CoffeeScriptCompiler, DelegatingResourceTransformer, LessResourceTransformer

public interface ResourceTransformer

A transformer is used to read a Resource and pass it through a transformation stage, to get a stream that can be used on the client side. Examples of this are languages that "compile" to JavaScript, or any of a few higher-level versions of CSS that are compiled to standard CSS. ResourceTransformers are contributed to the StreamableResourceSource service.

Since:

5.3

See Also:

StreamableResourceSource

Method Summary

Methods

Modifier and Type	Method and Description
ContentType	getTransformedContentType() Returns the MIME type of a transformed stream.
InputStream	transform(Resource source, ResourceDependencies dependencies) Read the source input stream and provide a new input stream of the transformed content.

Method Detail

getTransformedContentType

ContentType getTransformedContentType()

Returns the MIME type of a transformed stream.

Since:

5.4

transform

InputStream transform(Resource source,
                    ResourceDependencies dependencies)
                      throws IOException

Read the source input stream and provide a new input stream of the transformed content.

Parameters:

source - input content

dependencies - allows additional dependencies of the source to be tracked

Returns:

stream of output content

Throws:

IOException