Package com.orientechnologies.orient.core.storage.index.versionmap

Class OVersionPositionMap

java.lang.Object

com.orientechnologies.common.concur.resource.OSharedResourceAbstract

com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurableComponent

com.orientechnologies.orient.core.storage.index.versionmap.OVersionPositionMap

Direct Known Subclasses:

OVersionPositionMapV0

public abstract class OVersionPositionMap
extends ODurableComponent

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEF_EXTENSION
static final int	DEFAULT_VERSION_ARRAY_SIZE
static final int	MAGIC_SAFETY_FILL_FACTOR
static final int	MAX_CONCURRENT_DISTRIBUTED_TRANSACTIONS

Fields inherited from class com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurableComponent

atomicOperationsManager, readCache, storage, writeCache

Fields inherited from class com.orientechnologies.common.concur.resource.OSharedResourceAbstract

lock

Constructor Summary

Constructors

Constructor	Description
OVersionPositionMap(OAbstractPaginatedStorage storage, String name, String extension, String lockName)

Method Summary

Modifier and Type	Method	Description
abstract void	create(OAtomicOperation atomicOperation)
abstract void	delete(OAtomicOperation atomicOperation)
abstract int	getKeyHash(Object key)
abstract int	getVersion(int versionHash)
abstract void	open()
abstract void	updateVersion(int versionHash)

Methods inherited from class com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurableComponent

addFile, addPage, calculateInsideComponentOperation, deleteFile, executeInsideComponentOperation, getExtension, getFilledUpTo, getFullName, getLockName, getName, isFileExists, loadOrAddPageForWrite, loadPageForRead, loadPageForWrite, openFile, releasePageFromRead, releasePageFromWrite, setName, truncateFile, tryExecuteInsideComponentOperation

Methods inherited from class com.orientechnologies.common.concur.resource.OSharedResourceAbstract

acquireExclusiveLock, acquireSharedLock, releaseExclusiveLock, releaseSharedLock

Methods inherited from class java.lang.Object

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

Field Details

DEF_EXTENSION

public static final String DEF_EXTENSION

See Also:

• Constant Field Values

MAX_CONCURRENT_DISTRIBUTED_TRANSACTIONS

public static final int MAX_CONCURRENT_DISTRIBUTED_TRANSACTIONS

See Also:

• Constant Field Values

MAGIC_SAFETY_FILL_FACTOR

public static final int MAGIC_SAFETY_FILL_FACTOR

See Also:

• Constant Field Values

DEFAULT_VERSION_ARRAY_SIZE

public static final int DEFAULT_VERSION_ARRAY_SIZE

See Also:

• Constant Field Values

Constructor Details

OVersionPositionMap

public OVersionPositionMap(OAbstractPaginatedStorage storage,
 String name,
 String extension,
 String lockName)

Method Details

create

public abstract void create(OAtomicOperation atomicOperation)

open

public abstract void open()
                   throws IOException

Throws:

IOException

delete

public abstract void delete(OAtomicOperation atomicOperation)
                     throws IOException

Throws:

IOException

updateVersion

public abstract void updateVersion(int versionHash)

getVersion

public abstract int getVersion(int versionHash)

getKeyHash

public abstract int getKeyHash(Object key)