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https://issues.apache.org/jira/browse/FOP-2495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14616385#comment-14616385
 ] 

MH commented on FOP-2495:
-------------------------

Next problem: when I try to change the base URI:

builder.setBaseURI(uri);

I get this exception:

------------
java.lang.IllegalStateException: The final FOP Factory configuration has 
already been built
        at 
org.apache.fop.apps.FopFactoryBuilder$CompletedFopFactoryConfigBuilder.throwIllegalStateException(FopFactoryBuilder.java:515)
        at 
org.apache.fop.apps.FopFactoryBuilder$CompletedFopFactoryConfigBuilder.setBaseURI(FopFactoryBuilder.java:528)
        at 
org.apache.fop.apps.FopFactoryBuilder.setBaseURI(FopFactoryBuilder.java:182)
-------------


Very bad! That means I have to create everything from scratch for each 
document: (!!!):

---
 if (resolver != null) {
                builder = new FopFactoryBuilder(fontBase, resolver);
            } else {
                builder = new FopFactoryBuilder(fontBase);
            }
            builder.setConfiguration(cfg);
            builder.setBaseURI(fontBase); //since FOP 2.0
            //builder.setStrictFOValidation(false);
            fopFactory = builder.build();
-----

In FOP 1.0, I was able to change the baseURI via

foUserAgent.setBaseURL();

for each document - but FOP 2.0 does nott have such a method anymore. :-(

> 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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