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https://issues.apache.org/jira/browse/LUCENE-2423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12862529#action_12862529
]
Shai Erera commented on LUCENE-2423:
------------------------------------
I don't see any Lucene related classes in the stacktrace (org.apache.lucene.*).
This does not look like a Lucene problem. What makes you think it's related to
Lucene?
> NullPointerException when attemping to add a new document to an instance of
> IndexWriter
> ---------------------------------------------------------------------------------------
>
> Key: LUCENE-2423
> URL: https://issues.apache.org/jira/browse/LUCENE-2423
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 3.0.1
> Environment: Windows Vista Home Premium, Lucene version 3.0.1, JRE6,
> org.apache.commons.digester.Digester, org.apache.lucene.index.IndexWriter
> Reporter: Bill Herbert
> Fix For: 3.0.1
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> I'm attempting to run Listing #4 from "Parsing, Indexing, and Searching XML
> with Digester and Lucene"
> <https://www.ibm.com/developerworks/library/j-lucene/> . Using this code
> (with minor modifications), I am able to read and parse an XML input file and
> create a document to be indexed. However, attempting to index the document
> with an instance of IndexWriter (using the statement:
> writer.addDocument(contactDocument);) causes a NullPointerException with the
> following messages:
> Apr 29, 2010 2:57:32 PM org.apache.commons.digester.Digester endElement
> SEVERE: End event threw exception
> java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at
> org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.jav
> a:282)
> at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:217)
> at org.apache.commons.digester.Rule.end(Rule.java:253)
> at org.apache.commons.digester.Digester.endElement(Digester.java:1332)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endEleme
> nt(Unknown Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
> l.scanEndElement(Unknown Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
> l$FragmentContentDriver.next(Unknown Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(U
> nknown Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
> l.scanDocument(Unknown Source)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(U
> nknown Source)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(U
> nknown Source)
> at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown
> So
> urce)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Un
> known Source)
> at
> com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.p
> arse(Unknown Source)
> at org.apache.commons.digester.Digester.parse(Digester.java:1842)
> at DigesterMarriesLucene.main(DigesterMarriesLucene.java:94)
> Caused by: java.lang.NullPointerException
> at DigesterMarriesLucene.addContact(DigesterMarriesLucene.java:46)
> ... 20 more
> Exception in thread "main" java.lang.NullPointerException
> at
> org.apache.commons.digester.Digester.createSAXException(Digester.java
> :3333)
> at
> org.apache.commons.digester.Digester.createSAXException(Digester.java
> :3359)
> at org.apache.commons.digester.Digester.endElement(Digester.java:1335)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endEleme
> nt(Unknown Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
> l.scanEndElement(Unknown Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
> l$FragmentContentDriver.next(Unknown Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(U
> nknown Source)
> at
> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
> l.scanDocument(Unknown Source)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(U
> nknown Source)
> at
> com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(U
> nknown Source)
> at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown
> So
> urce)
> at
> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Un
> known Source)
> at
> com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.p
> arse(Unknown Source)
> at org.apache.commons.digester.Digester.parse(Digester.java:1842)
> at DigesterMarriesLucene.main(DigesterMarriesLucene.java:94)
> Caused by: java.lang.NullPointerException
> at DigesterMarriesLucene.addContact(DigesterMarriesLucene.java:46)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at
> org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.jav
> a:282)
> at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:217)
> at org.apache.commons.digester.Rule.end(Rule.java:253)
> at org.apache.commons.digester.Digester.endElement(Digester.java:1332)
> ... 12 more
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