Package com.arcadedb.engine

Class PageManager

java.lang.Object

com.arcadedb.utility.LockContext

com.arcadedb.engine.PageManager

public class PageManager
extends LockContext

Manages pages from disk to RAM. Each page can have different size.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	PageManager.ConcurrentPageAccessCallback
static class	PageManager.PPageManagerStats

Constructor Summary

Constructors

Constructor	Description
PageManager(FileManager fileManager, TransactionManager txManager, ContextConfiguration configuration, String databaseName)

Method Summary

Modifier and Type	Method	Description
void	checkPageVersion(MutablePage page, boolean isNew)
void	clear()
void	close()
void	deleteFile(int fileId)
protected void	flushPage(MutablePage page)
ImmutablePage	getImmutablePage(PageId pageId, int pageSize, boolean isNew, boolean createIfNotExists)
MutablePage	getMutablePage(PageId pageId, int pageSize, boolean isNew, boolean createIfNotExists)
PageManager.PPageManagerStats	getStats()
boolean	isPageFlushingSuspended()
void	kill()	Test only API.
void	overwritePage(MutablePage page)
void	removePageFromCache(PageId pageId)
void	suspendFlushAndExecute(CallableNoReturn callback)
void	updatePages(Map<PageId,MutablePage> newPages, Map<PageId,MutablePage> modifiedPages, boolean asyncFlush)
MutablePage	updatePageVersion(MutablePage page, boolean isNew)
void	writePages(List<MutablePage> updatedPages, boolean asyncFlush)

Methods inherited from class com.arcadedb.utility.LockContext

executeInLock, lock, manageExceptionInLock, unlock

Methods inherited from class java.lang.Object

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

Constructor Detail

PageManager

public PageManager(FileManager fileManager,
                   TransactionManager txManager,
                   ContextConfiguration configuration,
                   String databaseName)

Method Detail

close

public void close()

suspendFlushAndExecute

public void suspendFlushAndExecute(CallableNoReturn callback)
                            throws IOException,
                                   InterruptedException

Throws:

IOException

InterruptedException

isPageFlushingSuspended

public boolean isPageFlushingSuspended()

kill

public void kill()

Test only API.

clear

public void clear()

deleteFile

public void deleteFile(int fileId)

getImmutablePage

public ImmutablePage getImmutablePage(PageId pageId,
                                      int pageSize,
                                      boolean isNew,
                                      boolean createIfNotExists)
                               throws IOException

Throws:

IOException

getMutablePage

public MutablePage getMutablePage(PageId pageId,
                                  int pageSize,
                                  boolean isNew,
                                  boolean createIfNotExists)
                           throws IOException

Throws:

IOException

checkPageVersion

public void checkPageVersion(MutablePage page,
                             boolean isNew)
                      throws IOException

Throws:

IOException

updatePages

public void updatePages(Map<PageId,MutablePage> newPages,
                        Map<PageId,MutablePage> modifiedPages,
                        boolean asyncFlush)
                 throws IOException,
                        InterruptedException

Throws:

IOException

InterruptedException

updatePageVersion

public MutablePage updatePageVersion(MutablePage page,
                                     boolean isNew)
                              throws IOException,
                                     InterruptedException

Throws:

IOException

InterruptedException

overwritePage

public void overwritePage(MutablePage page)
                   throws IOException

Throws:

IOException

getStats

public PageManager.PPageManagerStats getStats()

removePageFromCache

public void removePageFromCache(PageId pageId)

writePages

public void writePages(List<MutablePage> updatedPages,
                       boolean asyncFlush)
                throws IOException,
                       InterruptedException

Throws:

IOException

InterruptedException

flushPage

protected void flushPage(MutablePage page)
                  throws IOException

Throws:

IOException