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https://issues.apache.org/jira/browse/FOP-2495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14615370#comment-14615370
 ] 

simon steiner commented on FOP-2495:
------------------------------------

You can use a resource resolver to return a inputstream to any files to avoid 
these issues:

    static class MyResourceResolver implements ResourceResolver {
        public Resource getResource(URI uri) throws IOException {
            return new Resource(xxx);
        }
        public OutputStream getOutputStream(URI uri) throws IOException {
            throw new RuntimeException(uri.toString());
        }
    }

    public static void main(String[] args) throws TransformerException, 
SAXException, IOException {
        String fopxconf = "<fop version=\"1.0\"></fop>";

        ResourceResolver cloudResourceResolver = new MyResourceResolver();
        FopFactoryBuilder confBuilder = new FopConfParser(new 
ByteArrayInputStream(fopxconf.getBytes()),
                EnvironmentalProfileFactory.createRestrictedIO(new 
File(".").toURI(), cloudResourceResolver)).getFopFactoryBuilder();
        FopFactory fopFactory = confBuilder.build();
        FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
        FileOutputStream fos = new FileOutputStream("out.png");
        Fop fop = fopFactory.newFop("image/png", foUserAgent, fos);
        TransformerFactory factory = TransformerFactory.newInstance();
        Transformer transformer = factory.newTransformer();
        Source src = new StreamSource(new ByteArrayInputStream(fo.getBytes()));
        Result res = new SAXResult(fop.getDefaultHandler());
        transformer.transform(src, res);
        fos.close();
    }


> Embedding: missing migration documentation from FOP 1.x
> -------------------------------------------------------
>
>                 Key: FOP-2495
>                 URL: https://issues.apache.org/jira/browse/FOP-2495
>             Project: FOP
>          Issue Type: Bug
>          Components: documentation
>    Affects Versions: 2.0
>         Environment: WIndows, Java 8, FOP 1.0
>            Reporter: MH
>            Priority: Blocker
>              Labels: documentation
>
> Because of bug FOP-2177 we couldn't upgrade form FOP 1.0 to FOP 1.1. FOP 2.0 
> has solved this bug (tested with standalone FOP scripts).
> Now we would like to upgrade our Java code from FOP 1.0 to FOP 2.0. The 
> Upgrading page (https://xmlgraphics.apache.org/fop/2.0/upgrading.html) says 
> "You should encounter very few issues in upgrading from FOP 1.0, except as 
> noted in the following: ...". The truth is completely different: starting by 
> replacing fop.jar, our code gets dozens of compiler errors! Many methods are 
> simply gone:
> FopFactory.newInstance()
> FoUserAgent.setBaseURL(String);
> FopFactory.getFontManager().setFontBaseURL(String)
> FopFactory.setURIResolver(URIResolver);
> etc.
> The javadocs from 1.1 to 2.0 simple changed - no deprecated methods, no hints 
> how to replace old methods.
> The FOP 2.0 embedding page 
> (https://xmlgraphics.apache.org/fop/2.0/embedding.html) just shows simple 
> examples to start from the ground. I can't find any migration help how to 
> replace old code. 
> E.g. how can I set the font base? 
> FopFactory.getFontManager().setFontBaseURL(String) is gone and I can't find 
> any equivalent code for FOP 2.0!
> This is a major bug in FOP 2.0 as API changes are not documented to upgrade 
> from FOP 1.x Java API to FOP 2.0!
> Now I just can search and try and experiment if I get our old code somehow 
> running with all those undocumented API changes. Can you please state a 
> migration documentation for all methods (method signatures) that don't exist 
> anymore? We can't start coding all over again from scratch. Thank you very 
> much!



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