WstxEOFException: Unexpected EOF in prolog #34
Description
Hello, I am getting a strange exception when trying to index some documents. The exception is as follows:
May 09, 2018 8:42:41 PM cz.muni.fi.mir.mathmlcanonicalization.modules.ElementMinimizer execute
SEVERE: error while parsing the input file.
com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
at [row,col {unknown-source}]: [1,0]
at com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:686)
at com.ctc.wstx.sr.BasicStreamReader.handleEOF(BasicStreamReader.java:2134)
at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2040)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1069)
at cz.muni.fi.mir.mathmlcanonicalization.modules.ElementMinimizer.minimizeElements(ElementMinimizer.java:134)
at cz.muni.fi.mir.mathmlcanonicalization.modules.ElementMinimizer.execute(ElementMinimizer.java:84)
at cz.muni.fi.mir.mathmlcanonicalization.MathMLCanonicalizer.executeStreamModules(MathMLCanonicalizer.java:375)
at cz.muni.fi.mir.mathmlcanonicalization.MathMLCanonicalizer.canonicalize(MathMLCanonicalizer.java:326)
at cz.muni.fi.mias.math.MathTokenizer.parseMathML(MathTokenizer.java:304)
at cz.muni.fi.mias.math.MathTokenizer.processFormulae(MathTokenizer.java:280)
at cz.muni.fi.mias.math.MathTokenizer.reset(MathTokenizer.java:246)
at org.apache.lucene.index.DefaultIndexingChain$PerField.invert(DefaultIndexingChain.java:613)
at org.apache.lucene.index.DefaultIndexingChain.processField(DefaultIndexingChain.java:359)
at org.apache.lucene.index.DefaultIndexingChain.processDocument(DefaultIndexingChain.java:318)
at org.apache.lucene.index.DocumentsWriterPerThread.updateDocument(DocumentsWriterPerThread.java:241)
at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:465)
at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1526)
at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:1500)
at cz.muni.fi.mias.indexing.Indexing.indexDocsThreaded(Indexing.java:145)
at cz.muni.fi.mias.indexing.Indexing.indexFiles(Indexing.java:89)
at cz.muni.fi.mias.MIaS.main(MIaS.java:39)
I run a command:
java -jar MIaS-1.6.6-4.10.4-SNAPSHOT.jar -conf ~/sandbox/mias/mias.properties -overwrite ~/sandbox/mias/data/samples/sample-mathml.xhtml ~/sandbox/mias/data/samples
My setup is:
MathMLCan: develop branch
MIaS: master branch
MIaSMath: master branch
$ java -version
java version "1.8.0_171"
Java(TM) SE Runtime Environment (build 1.8.0_171-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.171-b11, mixed mode)
The mias.properties configuration is:
INDEXDIR=~/sandbox/mias/indexes/index-0
UPDATE=false
THREADS=16
MAXRESULTS=10000
DOCLIMIT=-1
FORMULA_DOCUMENTS=true
The sample-mathml.xhtml file is as simple as:
<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
</head>
<body>
<math>
<mfrac linethickness="1">
<!-- numerator -->
<mrow>
<mi> x </mi>
<mo> + </mo>
<mi mathcolor="red"> y </mi>
<mo> + </mo>
<mi> z </mi>
</mrow>
<!-- denominator -->
<mrow>
<mi> x </mi>
<mphantom>
<mo> + </mo>
<mi> y </mi>
</mphantom>
<mo> + </mo>
<mi> z </mi>
</mrow>
</mfrac>
<mfenced open=":" close="?">
</mfenced>
</math>
</body>
</html>Is there please any help out there or any ideas what could be a problem here?