com.atlassian.jira.issue.index.analyzer
Class ExceptionFilter

java.lang.Object
  extended by org.apache.lucene.analysis.TokenStream
      extended by org.apache.lucene.analysis.TokenFilter
          extended by com.atlassian.jira.issue.index.analyzer.ExceptionFilter
All Implemented Interfaces:
org.apache.lucene.analysis.standard.StandardTokenizerConstants

public class ExceptionFilter
extends org.apache.lucene.analysis.TokenFilter
implements org.apache.lucene.analysis.standard.StandardTokenizerConstants

Currently, the StandardTokenizer takes anything of the 'alpha.alpha.alpha' form, and keeps it all together. This is useful, however it prevents searches on just the 'alpha' form.

An example is searching for 'NullPointerException' when 'java.lang.NullPointerException' has been indexed.

This filter tokenizes the individual words, as well as the full phrase, allowing searching to be done on either.

In addition, a comma separated list of numbers (eg "123,456,789") is not tokenized at the commas. This prevents searching on just "123".

This filter toeknizes the individual numbers, as well as the full phrase, allowing searching to be done on either. (JRA-7774)


Field Summary
 
Fields inherited from class org.apache.lucene.analysis.TokenFilter
input
 
Fields inherited from interface org.apache.lucene.analysis.standard.StandardTokenizerConstants
ACRONYM, ALPHA, ALPHANUM, APOSTROPHE, CJ, COMPANY, DEFAULT, DIGIT, EMAIL, EOF, HAS_DIGIT, HOST, KOREAN, LETTER, NOISE, NUM, P, tokenImage
 
Constructor Summary
ExceptionFilter(org.apache.lucene.analysis.TokenStream tokenStream)
           
 
Method Summary
 org.apache.lucene.analysis.Token next()
           
 
Methods inherited from class org.apache.lucene.analysis.TokenFilter
close
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ExceptionFilter

public ExceptionFilter(org.apache.lucene.analysis.TokenStream tokenStream)
Method Detail

next

public org.apache.lucene.analysis.Token next()
                                      throws IOException
Specified by:
next in class org.apache.lucene.analysis.TokenStream
Throws:
IOException


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