[jira] [Created] (FOP-2762) Serialisation issues when Accessibility is turned on

["Vincent Bonnefoy (JIRA)" <ji...@apache.org>]

Vincent Bonnefoy created FOP-2762:
-------------------------------------

             Summary: Serialisation issues when Accessibility is turned on
                 Key: FOP-2762
                 URL: https://issues.apache.org/jira/browse/FOP-2762
             Project: FOP
          Issue Type: Bug
          Components: renderer/afp, renderer/pdf
    Affects Versions: 2.2, 2.1
            Reporter: Vincent Bonnefoy
         Attachments: cfg-accessibility.xml, name.xml, name2fo.xsl, stacktrace-intermediate-fo-afp.txt, stacktrace-intermediate-fo-pdf.txt, stacktrace-pdf.txt

When rendering PDF or AFP using the conserve-memory and accessibility flag "on" a serialisation error is thrown.

I'm using the "representation of document in intermediate format XML" and get the following error when the CachedRenderPagesModel.java class is trying to save the page to disk.
{code:java}
SEVERE: Error while serializing page 1. Reason: java.io.NotSerializableException: org.apache.fop.render.intermediate.IFStructureTreeBuilder$IFStructureTreeElement
java.io.NotSerializableException: org.apache.fop.render.intermediate.IFStructureTreeBuilder$IFStructureTreeElement
{code}
It then leads to a NullPointerException when later the process tries to retrieve the page.

I saw the same behaviour when the output is set as "pdf" and uses the PDFStructElem.java object even though that's not the mode I'm using that also needs to be fixed.
{code:java}
SEVERE: Error while serializing page 1. Reason: java.io.NotSerializableException: org.apache.fop.pdf.PDFStructElem$Placeholder
java.io.NotSerializableException: org.apache.fop.pdf.PDFStructElem$Placeholder
{code}

I'm using fop within a java application but I reproduced using fop binaries:
- name.xml - _comes from the fop website_
- name2fo.xsl - _comes from the fop website_
A page citation reference has been added +to force the conserve-memory flag to serialise the page to disk+ for unresolved references.
- cfg-accessibility.xml - _comes from the fop website_
2 renderer have been added, PDF and AFP, since that's the ones I'm using.
The <accessibility>true</accessibility> flag has been turned on




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