org.apache.clerezza.rdf.cris

Class LuceneTools

java.lang.Object

org.apache.clerezza.rdf.cris.LuceneTools

public class LuceneTools
extends Object

Provides Lucene tools such as IndexWriter and IndexSearcher.

Author:

tio

Constructor Summary

Constructors

Constructor and Description
LuceneTools(org.apache.lucene.store.Directory indexDir, org.apache.lucene.analysis.Analyzer analyzer) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	closeIndexSearcher() Closes the IndexSearcher
void	closeIndexWriter() Closes the IndexWriter
protected void	commitChanges() Commits all pending changes to the index
protected void	finalize()
org.apache.lucene.analysis.Analyzer	getAnalyzer() Returns the Analyzer;
org.apache.lucene.search.IndexSearcher	getIndexSearcher() Returns a IndexSearcher
org.apache.lucene.index.IndexWriter	getIndexWriter() Return a IndexWriter
org.apache.lucene.index.IndexWriter	getIndexWriter(boolean createDir) Return a IndexWriter
void	optimizeIndex() Starts index optimization.

Methods inherited from class java.lang.Object

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

Constructor Detail

LuceneTools

public LuceneTools(org.apache.lucene.store.Directory indexDir,
           org.apache.lucene.analysis.Analyzer analyzer)

Constructor.

Parameters:

indexDir - the directory where the index is.

analyzer - the analyzer to use.

Method Detail

getIndexWriter

public org.apache.lucene.index.IndexWriter getIndexWriter()
                                                   throws RuntimeException

Return a IndexWriter

Throws:

RuntimeException

getIndexWriter

public org.apache.lucene.index.IndexWriter getIndexWriter(boolean createDir)

Return a IndexWriter

Parameters:

createDir - specifies the path to a directory where the index should be stored.

closeIndexWriter

public void closeIndexWriter()

Closes the IndexWriter

getIndexSearcher

public org.apache.lucene.search.IndexSearcher getIndexSearcher()
                                                        throws RuntimeException

Returns a IndexSearcher

Throws:

RuntimeException

closeIndexSearcher

public void closeIndexSearcher()

Closes the IndexSearcher

getAnalyzer

public org.apache.lucene.analysis.Analyzer getAnalyzer()

Returns the Analyzer;

Returns:

analyzer;

optimizeIndex

public void optimizeIndex()

Starts index optimization. Optimization is started in a separate thread. This method does not wait for optimization to finish but returns immediately after starting the optimize thread. //no more, see: http://www.searchworkings.org/blog/-/blogs/simon-says%3A-optimize-is-bad-for-you

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

commitChanges

protected void commitChanges()

Commits all pending changes to the index