[jira] [Commented] (FOP-2495) Embedding: missing migration documentation from FOP 1.x

["Jess Holle (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FOP-2495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14612020#comment-14612020 ] 

Jess Holle commented on FOP-2495:
---------------------------------

I have to concur with the original complaint here -- the level of API change from 1.1 to 2.0 without any form of migration guidance whatsoever makes migrating calling code quite challenging -- and needlessly so.

I've got all my calling code compiling and apparently working, but I'm still not actually clear that the new code is doing the equivalent things to the old code.  I'm sure I missed some test cases and there's no high-level guidance as to how to safely replace calls to xx.yy() that no longer exists, etc.

> 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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