org.h2.mvstore.db

Class MVTableEngine.Store

java.lang.Object

org.h2.mvstore.db.MVTableEngine.Store

Enclosing class:

MVTableEngine

public static class MVTableEngine.Store
extends java.lang.Object

A store with open tables.

Constructor Summary

Constructors

Constructor and Description
Store()

Method Summary

Modifier and Type	Method and Description
void	close(long maxCompactTime) Close the store.
void	closeImmediately() Close the store, without persisting changes.
void	compactFile(long maxCompactTime) Compact the database file, that is, compact blocks that have a low fill rate, and move chunks next to each other.
void	flush() Store all pending changes.
java.util.ArrayList<InDoubtTransaction>	getInDoubtTransactions()
java.io.InputStream	getInputStream()
MVStore	getStore()
java.util.HashMap<java.lang.String,MVTable>	getTables()
TransactionStore	getTransactionStore()
void	initTransactions() Commit all transactions that are in the committing state, and rollback all open transactions.
java.lang.String	nextTemporaryMapName() Get the name of the next available temporary map.
void	prepareCommit(Session session, java.lang.String transactionName) Prepare a transaction.
void	removeTable(MVTable table) Remove a table.
void	removeTemporaryMaps(BitField objectIds) Remove all temporary maps.
void	setCacheSize(int kb) Set the maximum memory to be used by the cache.
java.util.Map<java.lang.String,java.lang.Integer>	statisticsEnd() Stop collecting statistics.
void	statisticsStart() Start collecting statistics.
void	sync() Force the changes to disk.

Methods inherited from class java.lang.Object

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

Constructor Detail

Store

public Store()

Method Detail

getStore

public MVStore getStore()

getTransactionStore

public TransactionStore getTransactionStore()

getTables

public java.util.HashMap<java.lang.String,MVTable> getTables()

removeTable

public void removeTable(MVTable table)

Remove a table.

Parameters:

table - the table

flush

public void flush()

Store all pending changes.

closeImmediately

public void closeImmediately()

Close the store, without persisting changes.

initTransactions

public void initTransactions()

Commit all transactions that are in the committing state, and rollback all open transactions.

removeTemporaryMaps

public void removeTemporaryMaps(BitField objectIds)

Remove all temporary maps.

Parameters:

objectIds - the ids of the objects to keep

nextTemporaryMapName

public java.lang.String nextTemporaryMapName()

Get the name of the next available temporary map.

Returns:

the map name

prepareCommit

public void prepareCommit(Session session,
                          java.lang.String transactionName)

Prepare a transaction.

Parameters:

session - the session

transactionName - the transaction name (may be null)

getInDoubtTransactions

public java.util.ArrayList<InDoubtTransaction> getInDoubtTransactions()

setCacheSize

public void setCacheSize(int kb)

Set the maximum memory to be used by the cache.

Parameters:

kb - the maximum size in KB

getInputStream

public java.io.InputStream getInputStream()

sync

public void sync()

Force the changes to disk.

compactFile

public void compactFile(long maxCompactTime)

Compact the database file, that is, compact blocks that have a low fill rate, and move chunks next to each other. This will typically shrink the database file. Changes are flushed to the file, and old chunks are overwritten.

Parameters:

maxCompactTime - the maximum time in milliseconds to compact

close

public void close(long maxCompactTime)

Close the store. Pending changes are persisted. Chunks with a low fill rate are compacted, but old chunks are kept for some time, so most likely the database file will not shrink.

Parameters:

maxCompactTime - the maximum time in milliseconds to compact

statisticsStart

public void statisticsStart()

Start collecting statistics.

statisticsEnd

public java.util.Map<java.lang.String,java.lang.Integer> statisticsEnd()

Stop collecting statistics.

Returns:

the statistics