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From "sherin george (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-647) Error when tried to index with IndexWriter on Luncene 2.0
Date Fri, 04 Aug 2006 07:18:13 GMT
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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