Error when tried to index with IndexWriter on Luncene 2.0
---------------------------------------------------------
Key: LUCENE-647
URL: http://issues.apache.org/jira/browse/LUCENE-647
Project: Lucene - Java
Issue Type: Bug
Affects Versions: 2.0.0
Environment: Windows 2000/ Jdk 1.4
Reporter: sherin george
Dear Sir,
I am getting the following runtime exception when I tried to integrate Lucene
2.0 with my java application.
500 Internal Server Error
java.lang.ExceptionInInitializerError: java.lang.NullPointerException
at
org.apache.lucene.analysis.standard.StandardAnalyzer.tokenStream(StandardAnalyzer.java:72)
at
org.apache.lucene.index.DocumentWriter.invertDocument(DocumentWriter.java:162)
at org.apache.lucene.index.DocumentWriter.addDocument(DocumentWriter.java:93)
at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:476)
at com.kms.utils.IndexFiles.addToIndex(IndexFiles.java:84)
at
com.kms.document.action.DocumentUploadSubmitAction.execute(DocumentUploadSubmitAction.java:180)
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind[Oracle Application Server Containers for J2EE 10g
(9.0.4.0.0)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
at com.evermind[Oracle Application Server Containers for J2EE 10g
(9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:604)
at com.evermind[Oracle Application Server Containers for J2EE 10g
(9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
at com.evermind[Oracle Application Server Containers for J2EE 10g
(9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
at com.evermind[Oracle Application Server Containers for J2EE 10g
(9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
at com.evermind[Oracle Application Server Containers for J2EE 10g
(9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
at com.evermind[Oracle Application Server Containers for J2EE 10g
(9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
at java.lang.Thread.run(Thread.java:536)
Caused by: java.lang.NullPointerException
at
org.apache.lucene.analysis.standard.StandardFilter.<clinit>(StandardFilter.java:32)
... 21 more
I have identified that the exception occurs at execution of the following line
of code which indexes a document.
package com.kms.utils;
import com.kms.parser.Parser;
import com.kms.parser.ParserFactory;
import com.kms.reuse.Constants;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.Query;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.store.Directory;
import org.apache.lucene.demo.FileDocument;
import java.io.*;
public class IndexFiles
{
public static void addToIndex(String fileName)
{
try
{
Analyzer analyzer = new StandardAnalyzer();
String filePath="D:\docs"; //Folder to files are save
String filePathName=filePath+"/"+fileName;
Directory directory = FSDirectory.getDirectory("D: \index",true); ";
//Folder to which index files are saved
Document doc = new Document();
File file = new File(filePathName);
Parser parser = ParserFactory.getParser(file);
StringBuffer content = null;
String name = "";
String author = "";
String sourceDate = "";
String keywords = "";
if (parser != null)
{
content = parser.getContent();
name = parser.getTitle();
author = parser.getAuthor();
sourceDate = parser.getSourceDate();
keywords = parser.getKeywords();
}
doc.add(new Field("path",filePathName,
Field.Store.YES,Field.Index.TOKENIZED));
doc.add(new Field("name",fileName,Field.Store.YES,Field.Index.TOKENIZED));
doc.add(new
Field("contents",content.toString(),Field.Store.YES,Field.Index.TOKENIZED));
boolean flag=true;
File indexFiles=new File("D: \index");
String[] fileList=indexFiles.list();
if(fileList.length>1)
{
flag=false;
}
else
{
flag=true;
}
IndexWriter iwriter = new IndexWriter(directory,analyzer,flag);
iwriter.setMaxFieldLength(25000);
iwriter.addDocument(doc,analyzer);
iwriter.close();
}
catch(Exception e)
{
System.out.println(e);
}
}
}
I have checked all objects like directory,doc and analayzer for null conditions
but they all have specific values. I have even tried to execute the sample code
provided with the javadoc API documentation but in vain.
Any kind of solutions (including pseudo codes) are welcome
Thanks in advance,
Sherin George
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