org.alfresco.repo.search.impl.lucene
Class AbstractLuceneIndexerAndSearcherFactory

java.lang.Object
  org.alfresco.repo.search.impl.lucene.AbstractLuceneIndexerAndSearcherFactory

All Implemented Interfaces:

javax.transaction.xa.XAResource, LuceneConfig, LuceneIndexerAndSearcher, IndexerAndSearcher

Direct Known Subclasses:

ADMLuceneIndexerAndSearcherFactory, AVMLuceneIndexerAndSearcherFactory

public abstract class AbstractLuceneIndexerAndSearcherFactory
extends java.lang.Object
implements LuceneIndexerAndSearcher, javax.transaction.xa.XAResource

This class is resource manager LuceneIndexers and LuceneSearchers. It supports two phase commit inside XA transactions and outside transactions it provides thread local transaction support. TODO: Provide pluggable support for a transaction manager TODO: Integrate with Spring transactions

Nested Class Summary

static class	AbstractLuceneIndexerAndSearcherFactory.LuceneIndexBackupComponent This component is able to safely perform backups of the Lucene indexes while the server is running.
static class	AbstractLuceneIndexerAndSearcherFactory.LuceneIndexBackupJob Job that lock uses the AbstractLuceneIndexerAndSearcherFactory.LuceneIndexBackupComponent to perform safe backups of the Lucene indexes.

Nested classes/interfaces inherited from interface org.alfresco.repo.search.impl.lucene.LuceneIndexerAndSearcher

LuceneIndexerAndSearcher.WithAllWriteLocksWork

Field Summary

protected TenantService

tenantService

Fields inherited from interface javax.transaction.xa.XAResource

TMENDRSCAN, TMFAIL, TMJOIN, TMNOFLAGS, TMONEPHASE, TMRESUME, TMSTARTRSCAN, TMSUCCESS, TMSUSPEND, XA_OK, XA_RDONLY

Constructor Summary

AbstractLuceneIndexerAndSearcherFactory()
Private constructor for the singleton TODO: FIt in with IOC

Method Summary

void	commit() Commit the transaction
void	commit(javax.transaction.xa.Xid xid, boolean onePhase)
protected abstract LuceneIndexer	createIndexer(StoreRef storeRef, java.lang.String deltaId) Encapsulate creating an indexer
static void	deleteDirectory(java.io.File directory)
java.lang.Object	doWithAllWriteLocks(LuceneIndexerAndSearcher.WithAllWriteLocksWork lockWork)
void	end(javax.transaction.xa.Xid xid, int flag)
void	flush() Do any indexing that may be pending on behalf of the current transaction.
void	forget(javax.transaction.xa.Xid xid)
protected abstract java.util.List	getAllStores()
BulkLoader	getBulkLoader() Get preloader - may be null if preloading is not supported
long	getCommitLockTimeout() Get the commit lock timout.
MLAnalysisMode	getDefaultMLIndexAnalysisMode() The default mode for analysing ML text during index.
MLAnalysisMode	getDefaultMLSearchAnalysisMode() The default mode for analysis of ML text during search.
LuceneIndexer	getIndexer(StoreRef storeRef) Get an indexer for the store to use in the current transaction for this thread of control.
int	getIndexerBatchSize() The batch size in which to group flushes of the index.
int	getIndexerMaxFieldLength() Get the max number of tokens in the field
java.lang.String	getIndexRootLocation() The path to the index location
java.lang.String	getLockDirectory() Get the directory where any lock files are written (by default there are none)
int	getMaxDocIdCacheSize() How many document ids to cache (-ve => unbounded)
int	getMaxDocsForInMemoryMerge() Max doc number that will merged in memory (and not on disk)
int	getMaxDocumentCacheSize() How many documents to cache (-ve => unbounded)
int	getMaxIsCategoryCacheSize() How many categories to cache (-ve => unbounded)
int	getMaxLinkAspectCacheSize() How many link aspects to cache (-ve => unbounded)
int	getMaxParentCacheSize() How many parents to cache (-ve => unbounded)
int	getMaxPathCacheSize() How many paths to cache (-ve => unbounded)
long	getMaxTransformationTime() Get the max time for an atomic transform
int	getMaxTypeCacheSize() How many types to cache (-ve => unbounded)
int	getMergerMaxMergeDocs() Lucene merger config
int	getMergerMergeFactor() Lucene merger config
int	getMergerMinMergeDocs() Lucene merger config
int	getMergerTargetIndexCount() Target index count.
int	getMergerTargetOverlayCount() Target overlays (will apply deletions and create indexes if over this limit)
int	getQueryMaxClauses() The maximum numbr of sub-queries the can be generated out of wild card expansion etc
QueryRegisterComponent	getQueryRegister() Get the query register.
LuceneSearcher	getSearcher(StoreRef storeRef, boolean searchDelta) Encapsulate creating a searcher over the main index
protected abstract LuceneSearcher	getSearcher(StoreRef storeRef, LuceneIndexer indexer) Get a searcher over the index and the current delta
int	getTermIndexInterval() Lucene term index interval
java.util.concurrent.ThreadPoolExecutor	getThreadPoolExecutor() Get the thread pool for index merging etc
int	getTransactionTimeout()
boolean	getUseNioMemoryMapping() Use the nio memory mapping (work arounf for bugs with some JVMs)
long	getWriteLockTimeout() Get the write lock timeout
int	getWriterMaxMergeDocs() Lucene writer config
int	getWriterMergeFactor() Lucene writer config
int	getWriterMinMergeDocs() Lucene writer config
boolean	isCacheEnabled() Is caching enabled for each index fragment?
boolean	isSameRM(javax.transaction.xa.XAResource xar)
static void	main(java.lang.String[] args)
int	prepare() Prepare the transaction TODO: Store prepare results
int	prepare(javax.transaction.xa.Xid xid)
javax.transaction.xa.Xid[]	recover(int arg0)
void	rollback() Roll back the transaction
void	rollback(javax.transaction.xa.Xid xid)
void	setBulkLoader(BulkLoader bulkLoader)
void	setCacheEnabled(boolean cacheEnabled)
void	setCommitLockTimeout(long timeout) Set the lucene commit lock timeout (no longer used with lucene 2.1)
void	setDefaultMLIndexAnalysisMode(MLAnalysisMode mode) Set the ML analysis mode at index time.
void	setDefaultMLSearchAnalysisMode(MLAnalysisMode mode) Set the ML analysis mode at search time
void	setIndexerBatchSize(int indexerBatchSize) Set the batch six to use for background indexing
void	setIndexerMaxFieldLength(int indexerMaxFieldLength) Set the max field length.
void	setIndexRootLocation(java.lang.String indexRootLocation) Set the directory that contains the indexes
void	setLockDirectory(java.lang.String lockDirectory) Set the lock dir - just to make sure - this should no longer be used.
void	setLockPollInterval(long time) Set the lock poll interval in ms
void	setMaxAtomicTransformationTime(long maxAtomicTransformationTime) Set the maximum average transformation time allowed to a transformer in order to have the transformation performed in the current transaction.
void	setMaxDocIdCacheSize(int maxDocIdCacheSize)
void	setMaxDocsForInMemoryMerge(int maxDocsForInMemoryMerge)
void	setMaxDocumentCacheSize(int maxDocumentCacheSize)
void	setMaxIsCategoryCacheSize(int maxIsCategoryCacheSize)
void	setMaxLinkAspectCacheSize(int maxLinkAspectCacheSize)
void	setMaxParentCacheSize(int maxParentCacheSize)
void	setMaxPathCacheSize(int maxPathCacheSize)
void	setMaxTypeCacheSize(int maxTypeCacheSize)
void	setMergerMaxMergeDocs(int mergerMaxMergeDocs)
void	setMergerMergeFactor(int mergerMergeFactor)
void	setMergerMinMergeDocs(int mergerMinMergeDocs)
void	setMergerTargetIndexCount(int mergerTargetIndexCount)
void	setMergerTargetOverlayCount(int mergerTargetOverlayCount)
void	setQueryMaxClauses(int queryMaxClauses) Set the max number of queries in a llucen boolean query
void	setQueryRegister(QueryRegisterComponent queryRegister) Set the query register
void	setTenantService(TenantService tenantService) Set the tenant service
void	setTermIndexInterval(int termIndexInterval)
void	setThreadPoolExecutor(java.util.concurrent.ThreadPoolExecutor threadPoolExecutor)
boolean	setTransactionTimeout(int timeout)
void	setUseNioMemoryMapping(boolean useNioMemoryMapping)
void	setWriteLockTimeout(long timeout) Set the lucene write lock timeout
void	setWriterMaxMergeDocs(int writerMaxMergeDocs)
void	setWriterMergeFactor(int writerMergeFactor)
void	setWriterMinMergeDocs(int writerMinMergeDocs)
void	start(javax.transaction.xa.Xid xid, int flag)

Methods inherited from class java.lang.Object

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

Field Detail

tenantService

protected TenantService tenantService

Constructor Detail

AbstractLuceneIndexerAndSearcherFactory

public AbstractLuceneIndexerAndSearcherFactory()

Private constructor for the singleton TODO: FIt in with IOC

Method Detail

setIndexRootLocation

public void setIndexRootLocation(java.lang.String indexRootLocation)

Set the directory that contains the indexes

Parameters:

indexRootLocation -

setTenantService

public void setTenantService(TenantService tenantService)

Set the tenant service

Parameters:

tenantService -

setQueryRegister

public void setQueryRegister(QueryRegisterComponent queryRegister)

Set the query register

Parameters:

queryRegister -

getQueryRegister

public QueryRegisterComponent getQueryRegister()

Get the query register.

Returns:

- the query register.

setMaxAtomicTransformationTime

public void setMaxAtomicTransformationTime(long maxAtomicTransformationTime)

Set the maximum average transformation time allowed to a transformer in order to have the transformation performed in the current transaction. The default is 20ms.

Parameters:

maxAtomicTransformationTime - the maximum average time that a text transformation may take in order to be performed atomically.

getMaxTransformationTime

public long getMaxTransformationTime()

Get the max time for an atomic transform

Returns:

- milliseconds as a long

getBulkLoader

public BulkLoader getBulkLoader()

Description copied from interface: LuceneConfig

Get preloader - may be null if preloading is not supported

Specified by:

getBulkLoader in interface LuceneConfig

Returns:

setBulkLoader

public void setBulkLoader(BulkLoader bulkLoader)

getIndexer

public LuceneIndexer getIndexer(StoreRef storeRef)
                         throws IndexerException

Get an indexer for the store to use in the current transaction for this thread of control.

Specified by:

getIndexer in interface IndexerAndSearcher

Parameters:

storeRef - - the id of the store

Returns:

Throws:

IndexerException

createIndexer

protected abstract LuceneIndexer createIndexer(StoreRef storeRef,
                                               java.lang.String deltaId)

Encapsulate creating an indexer

Parameters:

storeRef -

deltaId -

Returns:

- the indexer made by the concrete implemntation

getSearcher

public LuceneSearcher getSearcher(StoreRef storeRef,
                                  boolean searchDelta)
                           throws SearcherException

Encapsulate creating a searcher over the main index

Specified by:

getSearcher in interface IndexerAndSearcher

searchDelta - - serach the in progress transaction as well as the main index (this is ignored for searches that do full text)

Returns:

Throws:

SearcherException

getSearcher

protected abstract LuceneSearcher getSearcher(StoreRef storeRef,
                                              LuceneIndexer indexer)
                                       throws SearcherException

Get a searcher over the index and the current delta

Parameters:

storeRef -

deltaId -

Returns:

- the searcher made by the concrete implementation.

Throws:

SearcherException

commit

public void commit(javax.transaction.xa.Xid xid,
                   boolean onePhase)
            throws javax.transaction.xa.XAException

Specified by:

commit in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

end

public void end(javax.transaction.xa.Xid xid,
                int flag)
         throws javax.transaction.xa.XAException

Specified by:

end in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

forget

public void forget(javax.transaction.xa.Xid xid)
            throws javax.transaction.xa.XAException

Specified by:

forget in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

getTransactionTimeout

public int getTransactionTimeout()
                          throws javax.transaction.xa.XAException

Specified by:

getTransactionTimeout in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

isSameRM

public boolean isSameRM(javax.transaction.xa.XAResource xar)
                 throws javax.transaction.xa.XAException

Specified by:

isSameRM in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

prepare

public int prepare(javax.transaction.xa.Xid xid)
            throws javax.transaction.xa.XAException

Specified by:

prepare in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

recover

public javax.transaction.xa.Xid[] recover(int arg0)
                                   throws javax.transaction.xa.XAException

Specified by:

recover in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

rollback

public void rollback(javax.transaction.xa.Xid xid)
              throws javax.transaction.xa.XAException

Specified by:

rollback in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

setTransactionTimeout

public boolean setTransactionTimeout(int timeout)
                              throws javax.transaction.xa.XAException

Specified by:

setTransactionTimeout in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

start

public void start(javax.transaction.xa.Xid xid,
                  int flag)
           throws javax.transaction.xa.XAException

Specified by:

start in interface javax.transaction.xa.XAResource

Throws:

javax.transaction.xa.XAException

commit

public void commit()
            throws IndexerException

Commit the transaction

Specified by:

commit in interface LuceneIndexerAndSearcher

Throws:

IndexerException

prepare

public int prepare()
            throws IndexerException

Prepare the transaction TODO: Store prepare results

Specified by:

prepare in interface LuceneIndexerAndSearcher

Returns:

- the tx code

Throws:

IndexerException

rollback

public void rollback()

Roll back the transaction

Specified by:

rollback in interface LuceneIndexerAndSearcher

flush

public void flush()

Description copied from interface: IndexerAndSearcher

Do any indexing that may be pending on behalf of the current transaction.

Specified by:

flush in interface IndexerAndSearcher

getIndexRootLocation

public java.lang.String getIndexRootLocation()

Description copied from interface: LuceneConfig

The path to the index location

Specified by:

getIndexRootLocation in interface LuceneConfig

Returns:

getIndexerBatchSize

public int getIndexerBatchSize()

Description copied from interface: LuceneConfig

The batch size in which to group flushes of the index.

Specified by:

getIndexerBatchSize in interface LuceneConfig

Returns:

setIndexerBatchSize

public void setIndexerBatchSize(int indexerBatchSize)

Set the batch six to use for background indexing

Parameters:

indexerBatchSize -

getLockDirectory

public java.lang.String getLockDirectory()

Get the directory where any lock files are written (by default there are none)

Returns:

- the path to the directory

setLockDirectory

public void setLockDirectory(java.lang.String lockDirectory)

Description copied from interface: LuceneConfig

Set the lock dir - just to make sure - this should no longer be used.

Specified by:

setLockDirectory in interface LuceneConfig

getQueryMaxClauses

public int getQueryMaxClauses()

Description copied from interface: LuceneConfig

The maximum numbr of sub-queries the can be generated out of wild card expansion etc

Specified by:

getQueryMaxClauses in interface LuceneConfig

Returns:

setQueryMaxClauses

public void setQueryMaxClauses(int queryMaxClauses)

Set the max number of queries in a llucen boolean query

Parameters:

queryMaxClauses -

setWriteLockTimeout

public void setWriteLockTimeout(long timeout)

Set the lucene write lock timeout

Parameters:

timeout -

setCommitLockTimeout

public void setCommitLockTimeout(long timeout)

Set the lucene commit lock timeout (no longer used with lucene 2.1)

Parameters:

timeout -

getCommitLockTimeout

public long getCommitLockTimeout()

Get the commit lock timout.

Returns:

- the timeout

getWriteLockTimeout

public long getWriteLockTimeout()

Get the write lock timeout

Returns:

- the timeout in ms

setLockPollInterval

public void setLockPollInterval(long time)

Set the lock poll interval in ms

Parameters:

time -

getIndexerMaxFieldLength

public int getIndexerMaxFieldLength()

Get the max number of tokens in the field

Specified by:

getIndexerMaxFieldLength in interface LuceneConfig

Returns:

- the max tokens considered.

setIndexerMaxFieldLength

public void setIndexerMaxFieldLength(int indexerMaxFieldLength)

Set the max field length.

Parameters:

indexerMaxFieldLength -

getThreadPoolExecutor

public java.util.concurrent.ThreadPoolExecutor getThreadPoolExecutor()

Description copied from interface: LuceneConfig

Get the thread pool for index merging etc

Specified by:

getThreadPoolExecutor in interface LuceneConfig

Returns:

setThreadPoolExecutor

public void setThreadPoolExecutor(java.util.concurrent.ThreadPoolExecutor threadPoolExecutor)

getDefaultMLIndexAnalysisMode

public MLAnalysisMode getDefaultMLIndexAnalysisMode()

Description copied from interface: LuceneConfig

The default mode for analysing ML text during index.

Specified by:

getDefaultMLIndexAnalysisMode in interface LuceneConfig

Returns:

setDefaultMLIndexAnalysisMode

public void setDefaultMLIndexAnalysisMode(MLAnalysisMode mode)

Set the ML analysis mode at index time.

Parameters:

mode -

getDefaultMLSearchAnalysisMode

public MLAnalysisMode getDefaultMLSearchAnalysisMode()

Description copied from interface: LuceneConfig

The default mode for analysis of ML text during search.

Specified by:

getDefaultMLSearchAnalysisMode in interface LuceneConfig

Returns:

setDefaultMLSearchAnalysisMode

public void setDefaultMLSearchAnalysisMode(MLAnalysisMode mode)

Set the ML analysis mode at search time

Parameters:

mode -

getMaxDocIdCacheSize

public int getMaxDocIdCacheSize()

Description copied from interface: LuceneConfig

How many document ids to cache (-ve => unbounded)

Specified by:

getMaxDocIdCacheSize in interface LuceneConfig

Returns:

setMaxDocIdCacheSize

public void setMaxDocIdCacheSize(int maxDocIdCacheSize)

getMaxDocsForInMemoryMerge

public int getMaxDocsForInMemoryMerge()

Description copied from interface: LuceneConfig

Max doc number that will merged in memory (and not on disk)

Specified by:

getMaxDocsForInMemoryMerge in interface LuceneConfig

Returns:

setMaxDocsForInMemoryMerge

public void setMaxDocsForInMemoryMerge(int maxDocsForInMemoryMerge)

getMaxDocumentCacheSize

public int getMaxDocumentCacheSize()

Description copied from interface: LuceneConfig

How many documents to cache (-ve => unbounded)

Specified by:

getMaxDocumentCacheSize in interface LuceneConfig

Returns:

setMaxDocumentCacheSize

public void setMaxDocumentCacheSize(int maxDocumentCacheSize)

getMaxIsCategoryCacheSize

public int getMaxIsCategoryCacheSize()

Description copied from interface: LuceneConfig

How many categories to cache (-ve => unbounded)

Specified by:

getMaxIsCategoryCacheSize in interface LuceneConfig

Returns:

setMaxIsCategoryCacheSize

public void setMaxIsCategoryCacheSize(int maxIsCategoryCacheSize)

getMaxLinkAspectCacheSize

public int getMaxLinkAspectCacheSize()

Description copied from interface: LuceneConfig

How many link aspects to cache (-ve => unbounded)

Specified by:

getMaxLinkAspectCacheSize in interface LuceneConfig

Returns:

setMaxLinkAspectCacheSize

public void setMaxLinkAspectCacheSize(int maxLinkAspectCacheSize)

getMaxParentCacheSize

public int getMaxParentCacheSize()

Description copied from interface: LuceneConfig

How many parents to cache (-ve => unbounded)

Specified by:

getMaxParentCacheSize in interface LuceneConfig

Returns:

setMaxParentCacheSize

public void setMaxParentCacheSize(int maxParentCacheSize)

getMaxPathCacheSize

public int getMaxPathCacheSize()

Description copied from interface: LuceneConfig

How many paths to cache (-ve => unbounded)

Specified by:

getMaxPathCacheSize in interface LuceneConfig

Returns:

setMaxPathCacheSize

public void setMaxPathCacheSize(int maxPathCacheSize)

getMaxTypeCacheSize

public int getMaxTypeCacheSize()

Description copied from interface: LuceneConfig

How many types to cache (-ve => unbounded)

Specified by:

getMaxTypeCacheSize in interface LuceneConfig

Returns:

setMaxTypeCacheSize

public void setMaxTypeCacheSize(int maxTypeCacheSize)

getMergerMaxMergeDocs

public int getMergerMaxMergeDocs()

Description copied from interface: LuceneConfig

Lucene merger config

Specified by:

getMergerMaxMergeDocs in interface LuceneConfig

Returns:

setMergerMaxMergeDocs

public void setMergerMaxMergeDocs(int mergerMaxMergeDocs)

getMergerMergeFactor

public int getMergerMergeFactor()

Description copied from interface: LuceneConfig

Lucene merger config

Specified by:

getMergerMergeFactor in interface LuceneConfig

Returns:

setMergerMergeFactor

public void setMergerMergeFactor(int mergerMergeFactor)

getMergerMinMergeDocs

public int getMergerMinMergeDocs()

Description copied from interface: LuceneConfig

Lucene merger config

Specified by:

getMergerMinMergeDocs in interface LuceneConfig

Returns:

setMergerMinMergeDocs

public void setMergerMinMergeDocs(int mergerMinMergeDocs)

getMergerTargetIndexCount

public int getMergerTargetIndexCount()

Description copied from interface: LuceneConfig

Target index count. Over this indexes will be merged together.

Specified by:

getMergerTargetIndexCount in interface LuceneConfig

Returns:

setMergerTargetIndexCount

public void setMergerTargetIndexCount(int mergerTargetIndexCount)

getMergerTargetOverlayCount

public int getMergerTargetOverlayCount()

Description copied from interface: LuceneConfig

Target overlays (will apply deletions and create indexes if over this limit)

Specified by:

getMergerTargetOverlayCount in interface LuceneConfig

Returns:

setMergerTargetOverlayCount

public void setMergerTargetOverlayCount(int mergerTargetOverlayCount)

getTermIndexInterval

public int getTermIndexInterval()

Description copied from interface: LuceneConfig

Lucene term index interval

Specified by:

getTermIndexInterval in interface LuceneConfig

Returns:

setTermIndexInterval

public void setTermIndexInterval(int termIndexInterval)

getUseNioMemoryMapping

public boolean getUseNioMemoryMapping()

Description copied from interface: LuceneConfig

Use the nio memory mapping (work arounf for bugs with some JVMs)

Specified by:

getUseNioMemoryMapping in interface LuceneConfig

Returns:

setUseNioMemoryMapping

public void setUseNioMemoryMapping(boolean useNioMemoryMapping)

getWriterMaxMergeDocs

public int getWriterMaxMergeDocs()

Description copied from interface: LuceneConfig

Lucene writer config

Specified by:

getWriterMaxMergeDocs in interface LuceneConfig

Returns:

setWriterMaxMergeDocs

public void setWriterMaxMergeDocs(int writerMaxMergeDocs)

getWriterMergeFactor

public int getWriterMergeFactor()

Description copied from interface: LuceneConfig

Lucene writer config

Specified by:

getWriterMergeFactor in interface LuceneConfig

Returns:

setWriterMergeFactor

public void setWriterMergeFactor(int writerMergeFactor)

getWriterMinMergeDocs

public int getWriterMinMergeDocs()

Description copied from interface: LuceneConfig

Lucene writer config

Specified by:

getWriterMinMergeDocs in interface LuceneConfig

Returns:

setWriterMinMergeDocs

public void setWriterMinMergeDocs(int writerMinMergeDocs)

isCacheEnabled

public boolean isCacheEnabled()

Description copied from interface: LuceneConfig

Is caching enabled for each index fragment?

Specified by:

isCacheEnabled in interface LuceneConfig

Returns:

setCacheEnabled

public void setCacheEnabled(boolean cacheEnabled)

getAllStores

protected abstract java.util.List getAllStores()

doWithAllWriteLocks

public java.lang.Object doWithAllWriteLocks(LuceneIndexerAndSearcher.WithAllWriteLocksWork lockWork)

Specified by:

doWithAllWriteLocks in interface LuceneIndexerAndSearcher

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Throws:

java.io.IOException

deleteDirectory

public static void deleteDirectory(java.io.File directory)
                            throws java.io.IOException

Throws:

java.io.IOException