com.esri.gpt.server.assertion.index
Class AsnBaseIndexAdapter

java.lang.Object
  com.esri.gpt.server.assertion.index.AsnBaseIndexAdapter

Direct Known Subclasses:

AsnIndexAdapter

public class AsnBaseIndexAdapter
extends Object

Base class for an adapter that handles read/write operations against a Lucene index of assertions.

Constructor Summary

AsnBaseIndexAdapter()
Default constructor

Method Summary

void	closeReader(org.apache.lucene.index.IndexReader reader) Closes an index reader.
void	closeSearcher(org.apache.lucene.search.IndexSearcher searcher) Closes an index searcher.
void	closeWriter(org.apache.lucene.index.IndexWriter writer) Closes an index writer.
void	configure(AsnIndexReference indexReference) Configures the adapter from an index configuration reference.
protected org.apache.lucene.store.Directory	getDirectory() Gets the Lucene Directory assoctated with the index.
AsnIndexReference	getIndexReference() Gets the configuration reference for the index.
protected org.apache.lucene.store.NativeFSLockFactory	getNativeLockFactory() Gets the native lock factory if it has been configured for use.
org.apache.lucene.index.IndexReader	makeIndexReader() Makes an index reader.
org.apache.lucene.index.IndexWriter	makeIndexWriter(org.apache.lucene.analysis.Analyzer analyzer) Makes an index writer.
org.apache.lucene.analysis.Analyzer	newAnalyzer(AsnContext context) Instantiates a new analyzer.
void	optimize() Optimizes the index.
void	setIndexReference(AsnIndexReference indexReference) Sets the configuration reference for the index.
void	touch() Opens and closes a writer.

Methods inherited from class java.lang.Object

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

Constructor Detail

AsnBaseIndexAdapter

public AsnBaseIndexAdapter()

Default constructor

Method Detail

getIndexReference

public AsnIndexReference getIndexReference()

Gets the configuration reference for the index.

Returns:

the index configuration reference

setIndexReference

public void setIndexReference(AsnIndexReference indexReference)

Sets the configuration reference for the index.

Parameters:

indexReference - index configuration reference

closeReader

public void closeReader(org.apache.lucene.index.IndexReader reader)

Closes an index reader.

Parameters:

reader - the reader to close

closeSearcher

public void closeSearcher(org.apache.lucene.search.IndexSearcher searcher)

Closes an index searcher.

Parameters:

searcher - the searcher to close

closeWriter

public void closeWriter(org.apache.lucene.index.IndexWriter writer)

Closes an index writer.

Parameters:

writer - the writer to close

configure

public void configure(AsnIndexReference indexReference)

Configures the adapter from an index configuration reference.

Parameters:

indexReference - index configuration reference

getDirectory

protected org.apache.lucene.store.Directory getDirectory()
                                                  throws IOException

Gets the Lucene Directory assoctated with the index.

Returns:

the directory

Throws:

IOException - if an I/O exception occurs

getNativeLockFactory

protected org.apache.lucene.store.NativeFSLockFactory getNativeLockFactory()
                                                                    throws IOException

Gets the native lock factory if it has been configured for use.

Returns:

the native lock factory (null if not configured for use)

Throws:

IOException - if an I/O exception occurs

makeIndexReader

public org.apache.lucene.index.IndexReader makeIndexReader()
                                                    throws org.apache.lucene.index.CorruptIndexException,
                                                           IOException

Makes an index reader.
The reader must be closed following use.

Returns:

the reader

Throws:

org.apache.lucene.index.CorruptIndexException - if the index is corrupt

IOException - if an I/O exception occurs

makeIndexWriter

public org.apache.lucene.index.IndexWriter makeIndexWriter(org.apache.lucene.analysis.Analyzer analyzer)
                                                    throws org.apache.lucene.index.CorruptIndexException,
                                                           org.apache.lucene.store.LockObtainFailedException,
                                                           IOException

Makes an index writer.
The writer must be closed following use.

Parameters:

analyzer - the analyzer

Returns:

the writer

Throws:

org.apache.lucene.index.CorruptIndexException - if the index is corrupt

org.apache.lucene.store.LockObtainFailedException - if a write lock cannot be obtained

IOException - if an I/O exception occurs

newAnalyzer

public org.apache.lucene.analysis.Analyzer newAnalyzer(AsnContext context)

Instantiates a new analyzer.

Parameters:

context - the assertion operation context

Returns:

the analyzer

optimize

public void optimize()
              throws org.apache.lucene.index.CorruptIndexException,
                     org.apache.lucene.store.LockObtainFailedException,
                     IOException

Optimizes the index.

Throws:

org.apache.lucene.index.CorruptIndexException - if the index is corrupt

org.apache.lucene.store.LockObtainFailedException - if a write lock cannot be obtained

IOException - if an I/O exception occurs

touch

public void touch()
           throws org.apache.lucene.index.CorruptIndexException,
                  org.apache.lucene.store.LockObtainFailedException,
                  IOException

Opens and closes a writer.
This ensures that a directory folder structure exists.

Throws:

org.apache.lucene.index.CorruptIndexException - if the index is corrupt

org.apache.lucene.store.LockObtainFailedException - if a write lock cannot be obtained

IOException - if an I/O exception occurs