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

java.lang.Object
  org.apache.lucene.analysis.Analyzer
      com.atlassian.jira.issue.index.analyzer.GermanAnalyzer

All Implemented Interfaces:

Closeable

public class GermanAnalyzer
extends org.apache.lucene.analysis.Analyzer

Extends the functionality of the standard GermanAnalyzer provided by Lucene by adding the SubtokenFilter.

Note: checked for Lucene 2.9 compatibility.

See Also:

SubtokenFilter

Constructor Summary

GermanAnalyzer(org.apache.lucene.util.Version version, boolean includeSubTokenFilter, com.google.common.base.Function<org.apache.lucene.analysis.TokenStream,org.apache.lucene.analysis.TokenStream> stemmingFilter)

Method Summary

boolean	isIndexing()
org.apache.lucene.analysis.TokenStream	reusableTokenStream(String fieldName, Reader reader)
org.apache.lucene.analysis.TokenStream	tokenStream(String fieldName, Reader reader) Creates a TokenStream which tokenizes all the text in the provided Reader.
protected org.apache.lucene.analysis.TokenStream	wrapStreamForIndexing(org.apache.lucene.analysis.TokenStream input) Applies a SubtokenFilter to the input token stream at document indexing time.
protected org.apache.lucene.analysis.TokenStream	wrapStreamForWilcardSearchSupport(org.apache.lucene.analysis.TokenStream input) Applies a KeywordRepeatFilter to the input token stream at document indexing time to store the original tokens as keywords before any stemming filter is applied and therefore support wildcard searches and exact phrase queries on document fields.

Methods inherited from class org.apache.lucene.analysis.Analyzer

close, getOffsetGap, getPositionIncrementGap, getPreviousTokenStream, setPreviousTokenStream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GermanAnalyzer

public GermanAnalyzer(org.apache.lucene.util.Version version,
                      boolean includeSubTokenFilter,
                      com.google.common.base.Function<org.apache.lucene.analysis.TokenStream,org.apache.lucene.analysis.TokenStream> stemmingFilter)

Method Detail

tokenStream

public final org.apache.lucene.analysis.TokenStream tokenStream(String fieldName,
                                                                Reader reader)

Creates a TokenStream which tokenizes all the text in the provided Reader.

Specified by:

tokenStream in class org.apache.lucene.analysis.Analyzer

Returns:

A TokenStream build from a StandardTokenizer filtered with StandardFilter, LowerCaseFilter, StopFilter, GermanStemFilter

isIndexing

public boolean isIndexing()

wrapStreamForIndexing

protected org.apache.lucene.analysis.TokenStream wrapStreamForIndexing(org.apache.lucene.analysis.TokenStream input)

Applies a SubtokenFilter to the input token stream at document indexing time.

Parameters:

input - token stream

Returns:

A TokenStream filtered by the sub-token filter during indexing, otherwise the input token stream is returned.

wrapStreamForWilcardSearchSupport

protected org.apache.lucene.analysis.TokenStream wrapStreamForWilcardSearchSupport(org.apache.lucene.analysis.TokenStream input)

Applies a KeywordRepeatFilter to the input token stream at document indexing time to store the original tokens as keywords before any stemming filter is applied and therefore support wildcard searches and exact phrase queries on document fields.

Parameters:

input - token stream

Returns:

A TokenStream filtered by the sub-token filter during indexing, otherwise the input token stream is returned.

reusableTokenStream

public final org.apache.lucene.analysis.TokenStream reusableTokenStream(String fieldName,
                                                                        Reader reader)
                                                                 throws IOException

Overrides:

reusableTokenStream in class org.apache.lucene.analysis.Analyzer

Throws:

IOException