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https://issues.apache.org/jira/browse/UIMA-2101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13011643#comment-13011643
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Richard Eckart de Castilho commented on UIMA-2101:
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Actually that depends on how you treat the XML data - document oriented or data
oriented. In data-oriented XML, whitespace between two opening and two closing
tags is so-called "ignorable whitespace" and may be added or omitted for sake
for readability. Only whitespace between an opening and a closing tag needs to
be preserved. If you look at the SAX handler interface, there are two different
methods for receiving whitespace.
Thus, preserving the content in a round trip depends on what you had in mind
when you implemented your parser and serializer. Looks like UIMA has
data-oriented XML in mind when serializing. You should only need to respect
that when parsing again.
> CasToInlineXml adds whitespace
> ------------------------------
>
> Key: UIMA-2101
> URL: https://issues.apache.org/jira/browse/UIMA-2101
> Project: UIMA
> Issue Type: Bug
> Affects Versions: 2.3.1SDK
> Reporter: Steven Bethard
>
> CasToInlineXml adds indentation between adjacent XML elements. E.g. for a
> single character document with a single annotation covering that one
> character, it will write:
> {noformat}
> <?xml version="1.0" encoding="UTF-8"?>
> <Document>
> <uima.tcas.DocumentAnnotation sofa="Sofa" begin="0" end="1"
> language="x-unspecified">
> <uima.tcas.Annotation sofa="Sofa" begin="0" end="1">
> </uima.tcas.Annotation>
> </uima.tcas.DocumentAnnotation>
> </Document>
> {noformat}
> I think it should instead write everything in a single line, that is:
> {noformat}
> <?xml version="1.0" encoding="UTF-8"?>
> <Document><uima.tcas.DocumentAnnotation sofa="Sofa" begin="0" end="1"
> language="x-unspecified"><uima.tcas.Annotation sofa="Sofa" begin="0" end="1">
> </uima.tcas.Annotation></uima.tcas.DocumentAnnotation></Document>
> {noformat}
> I believe this could be fixed by replacing the line:
> {noformat}
> XMLSerializer sax2xml = new XMLSerializer(byteArrayOutputStream);
> {noformat}
> with the line:
> {noformat}
> XMLSerializer sax2xml = new XMLSerializer(byteArrayOutputStream, false);
> {noformat}
> I think it's a bug that CasToInlineXml is changing the character offsets, but
> I would also be happy if there was an alternate constructor or a method on
> CasToInlineXml that allowed disabling the formatting.
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