DO NOT REPLY [Bug 6009] New: - broke in 0.20.3rc: Error:null

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<fo:marker> broke in 0.20.3rc: Error:null

           Summary: <fo:marker> broke in 0.20.3rc: Error:null
           Product: Fop
           Version: all
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Major
          Priority: Other
         Component: general
        AssignedTo: fop-dev@xml.apache.org
        ReportedBy: jens_scheffler@hp.com


TITLE:
<fo:marker> broke in 0.20.3rc: Error:null
BODY:
Hi,
we have problems using <fo:marker> in our fo-documents. 
We use xml+xsl->fo to generate invoices out of our billing system in pdf-
format. Therefore we need to have <fo:marker> to create subtotals at the end of 
each page.

Problem #1:
In the new fop release 0.20.3rc our fo-documents are not working anymore, 
because we get an "ERROR: null" when we try to generate an invoice. In tour 
testing we tried to use the same format for the markers like in the provided 
examples, but in our installation, we get the same error with the 
example "glossary.fo" and "hide.fo".
Is there a possibility to debug the fop application more deeply?
Do we use the wrong .jar files? We copied all the current versions which were 
supplied in the tar-file into the $CLASSPATH directory. The marker was working 
with release 0.20.2RC.
The debug output is like this:
[DEBUG]: Input mode:
[DEBUG]: FO
[DEBUG]: fo input file: C:\Temp\FOP-02~1.TAR\FOP-
02~1.3RC\docs\examples\markers\glossary.fo
[DEBUG]: Output mode:
[DEBUG]: awt on screen
[DEBUG]: OPTIONS
[DEBUG]: no user configuration file is used [default]
[DEBUG]: debug mode on
[DEBUG]: dump configuration
[DEBUG]: quiet mode on
[DEBUG]: base directory: file:/C:/Temp/FOP-02~1.TAR/FOP-
02~1.3RC/docs/examples/markers/
[DEBUG]: using SAX parser org.apache.xerces.parsers.SAXParser
[INFO]: building formatting object tree
[DEBUG]: setting up fonts
[ERROR]: null
org.apache.fop.apps.FOPException
        at org.apache.fop.apps.Driver.render(Driver.java:486)
        at org.apache.fop.apps.AWTStarter.run(AWTStarter.java:116)
        at org.apache.fop.apps.Fop.main(Fop.java:19)

---------

java.lang.NullPointerException
        at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1094)
        at org.apache.fop.apps.Driver.render(Driver.java:481)
        at org.apache.fop.apps.AWTStarter.run(AWTStarter.java:116)
        at org.apache.fop.apps.Fop.main(Fop.java:19)

---------

java.lang.NullPointerException
        at org.apache.fop.fo.FObjMixed.addCharacters(FObjMixed.java:47)
        at org.apache.fop.fo.FOTreeBuilder.characters(FOTreeBuilder.java:166)
        at org.apache.xerces.parsers.SAXParser.characters(SAXParser.java:1579)
        at org.apache.xerces.validators.common.XMLValidator.processCharacters
(XMLValidator.java:866)
        at org.apache.xerces.readers.UTF8Reader.scanContent
(UTF8Reader.java:2377)
        at 
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch
(XMLDocumentScanner.java:1094)
        at org.apache.xerces.framework.XMLDocumentScanner.parseSome
(XMLDocumentScanner.java:381)
        at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1081)
        at org.apache.fop.apps.Driver.render(Driver.java:481)
        at org.apache.fop.apps.AWTStarter.run(AWTStarter.java:116)
        at org.apache.fop.apps.Fop.main(Fop.java:19)


Problem #2:
We have a need to get a subtotal from the last page onto the top of every 
current page and a subtotal on the bottom of every page. Therefore we use a 
second <fo:marker>. Unfortunatly we get an error for every block which is 
containing more than one marker, like this:
(...)
  <fo:block>
    <fo:marker marker-class-name="marker1">last subtotal: $100</fo:marker>
    <fo:marker marker-class-name="marker2">current subtotal: $100</fo:marker>
    1x Potatoe washing machine................. $100
  </fo:block>
(...)
The Output is like this:
"fo:marker must be an initial child,and 'marker-class-name' must be unique for 
same parent"
We are pretty much sure, that we use the right syntax for the two markers, we 
tried to debug through the code and it SHOULD work. The mysterious part of our 
second marker-problem is, that we get an error but the content of the marker is 
shown on the resulting invoice.

Any help appreciated!
Thanks!

Jens Scheffler

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