XHTML to PDF using flying-saucer how to cache css
===

In my production pipeline I need to generate a few hundred PDF from HTML. For this scenario I first convert the HTML into XHTML.
Than im passing the 'cleaned' XHTML and the uri to the renderer.

Since the *.css and imageFiles are equal for all the XHTML files I dont need to resolve them all the time I process a file.
Im successfully using the following code for caching images. How can I cache .css files aswell? I want to avoid putting all files into my classpath.


	ITextRenderer renderer = new ITextRenderer();

	ResourceLoaderUserAgent callback = new ResourceLoaderUserAgent(renderer.getOutputDevice());
	callback.setSharedContext(renderer.getSharedContext());

	for (MyObject myObject : myObjectList) {

		OutputStream os = new FileOutputStream(tempFile);

		final DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
		documentBuilderFactory.setValidating(false);
		DocumentBuilder builder = documentBuilderFactory.newDocumentBuilder();
		org.w3c.dom.Document document = builder.parse(myObject.getLocalPath); // full path to .xhtml

		renderer.getSharedContext().setUserAgentCallback(callback);

		renderer.setDocument(document, myObject.getUri());
		renderer.layout();
		renderer.createPDF(os);

		os.flush();
		os.close();
	}
        ...


	private static class ResourceLoaderUserAgent extends ITextUserAgent
	{
		public ResourceLoaderUserAgent(ITextOutputDevice outputDevice) {
			super(outputDevice);
		}

		protected InputStream resolveAndOpenStream(String uri) {
			InputStream is = super.resolveAndOpenStream(uri);
			System.out.println("IN resolveAndOpenStream() " + uri);

			return is;
		}
	}