IDML: Merging empty target segment results in exception

[David Meikle]

Merging a translation kit with an empty target segment results in an "Error adding events to sub document writer" as the XMLEvents result in an unopened tag.

[Chase Tingley]

Hi @dmeikle, can you post a stacktrace and (if possible) email me a sample source file offline that shows the problem? I tried reproducing this with a couple of IDML files I had handy, but it looks like the problem may depend on the document structure.

[David Meikle]

Hi @tingley, let me dig them out. I did a quick hack to workaround the issue, as we had to turn around the files quickly, and was planning to come back to it - but suspect you will be far quicker than me on this one.

[David Meikle]

Hi @tingley - Shared privately from my L24 account.

[Chase Tingley]

Weird, I can reproduce this with some effort in Rainbow, but not in tikal, using the same filter/xliff options.

Anyways, the underlying exception (which is not displayed in Rainbow) is:

javax.xml.stream.XMLStreamException: No open start element, when trying to write end element
    at com.ctc.wstx.sw.BaseStreamWriter.throwOutputError(BaseStreamWriter.java:1537)
    at com.ctc.wstx.sw.BaseStreamWriter.reportNwfStructure(BaseStreamWriter.java:1566)
    at com.ctc.wstx.sw.BaseNsStreamWriter.doWriteEndTag(BaseNsStreamWriter.java:648)
    at com.ctc.wstx.sw.BaseNsStreamWriter.writeEndElement(BaseNsStreamWriter.java:280)
    at org.codehaus.stax2.ri.Stax2EventWriterImpl.add(Stax2EventWriterImpl.java:70)
    at net.sf.okapi.filters.idml.SubDocumentWriter.addEvents(SubDocumentWriter.java:209)
    at net.sf.okapi.filters.idml.SubDocumentWriter.handleEndDocumentEvent(SubDocumentWriter.java:197)
    at net.sf.okapi.filters.idml.SubDocumentWriter.handleEvent(SubDocumentWriter.java:114)
    at net.sf.okapi.filters.idml.IDMLFilterWriter.processEndSubDocument(IDMLFilterWriter.java:317)
    at net.sf.okapi.filters.idml.IDMLFilterWriter.handleEvent(IDMLFilterWriter.java:160)
    at net.sf.okapi.steps.rainbowkit.postprocess.Merger.processUntilTextUnit(Merger.java:441)
    at net.sf.okapi.steps.rainbowkit.postprocess.Merger.processTextUnit(Merger.java:262)
    at net.sf.okapi.steps.rainbowkit.postprocess.Merger.handleEvent(Merger.java:111)

[Virgil Ierubino]

Just noting that I am still seeing this bug.

[Devesh kumar]

I am facing the same issue, has anyone tried and found any update on this yet?

[Denis Konovalyenko]

Devesh, thank you for your confirmation! Would it be possible for you to attach a document that causes this error?

[Devesh kumar]

it can be downloaded from this temporary link : https://tmpfiles.org/118470/text1.idml

[Denis Konovalyenko]

Thank you for sharing the document! I will attach it to the issue.

Below is a bit more verbose stack trace:

net.sf.okapi.common.exceptions.OkapiIOException: Error adding events to sub document writer

    at net.sf.okapi.filters.idml.SubDocumentWriter.handleEndDocumentEvent(SubDocumentWriter.java:205)
    at net.sf.okapi.filters.idml.SubDocumentWriter.handleEvent(SubDocumentWriter.java:120)
    at net.sf.okapi.filters.idml.IDMLFilterWriter.processEndSubDocument(IDMLFilterWriter.java:340)
    at net.sf.okapi.filters.idml.IDMLFilterWriter.handleEvent(IDMLFilterWriter.java:169)
    at net.sf.okapi.steps.rainbowkit.postprocess.Merger.processUntilTextUnit(Merger.java:289)
    at net.sf.okapi.steps.rainbowkit.postprocess.Merger.processTextUnit(Merger.java:245)
    at net.sf.okapi.steps.rainbowkit.postprocess.Merger.handleEvent(Merger.java:97)
    at net.sf.okapi.steps.rainbowkit.postprocess.MergingStep.handleEvent(MergingStep.java:84)
    at net.sf.okapi.common.pipeline.Pipeline.execute(Pipeline.java:117)
    at net.sf.okapi.common.pipeline.Pipeline.process(Pipeline.java:227)
    at net.sf.okapi.common.pipeline.Pipeline.process(Pipeline.java:199)
    at net.sf.okapi.common.pipelinedriver.PipelineDriver.processBatch(PipelineDriver.java:182)
...
Caused by: javax.xml.stream.XMLStreamException: No open start element, when trying to write end element
    at com.ctc.wstx.sw.BaseStreamWriter.throwOutputError(BaseStreamWriter.java:1589)
    at com.ctc.wstx.sw.BaseStreamWriter.reportNwfStructure(BaseStreamWriter.java:1618)
    at com.ctc.wstx.sw.BaseNsStreamWriter.doWriteEndTag(BaseNsStreamWriter.java:658)
    at com.ctc.wstx.sw.BaseNsStreamWriter.writeEndElement(BaseNsStreamWriter.java:285)
    at org.codehaus.stax2.ri.Stax2EventWriterImpl.add(Stax2EventWriterImpl.java:71)
    at net.sf.okapi.filters.idml.SubDocumentWriter.addEvents(SubDocumentWriter.java:211)
    at net.sf.okapi.filters.idml.SubDocumentWriter.handleEndDocumentEvent(SubDocumentWriter.java:203)

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[Denis Konovalyenko]

A related pull request #563 was opened.

By the way, to simplify things, a document under test has the following look:

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[Chase Tingley]

Fixed by https://bitbucket.org/okapiframework/okapi/pull-requests/563

[Devesh kumar]

@Denis thanks for the solution