com.orientechnologies.orient.core.tx

Class OTransactionOptimistic

java.lang.Object

com.orientechnologies.orient.core.tx.OTransactionAbstract

com.orientechnologies.orient.core.tx.OTransactionRealAbstract

com.orientechnologies.orient.core.tx.OTransactionOptimistic

All Implemented Interfaces:

OBasicTransaction, OTransaction, OTransactionInternal

Direct Known Subclasses:

OTransactionOptimisticClient, OTransactionOptimisticDistributed, OTransactionOptimisticProxy, OTransactionOptimisticServer

public class OTransactionOptimistic
extends OTransactionRealAbstract

Nested Class Summary

Nested classes/interfaces inherited from interface com.orientechnologies.orient.core.tx.OTransaction

OTransaction.ISOLATION_LEVEL, OTransaction.TXSTATUS, OTransaction.TXTYPE

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	changed

Fields inherited from class com.orientechnologies.orient.core.tx.OTransactionRealAbstract

allEntries, changedDocuments, id, indexEntries, newObjectCounter, recordIndexOperations, updatedRids, userData

Fields inherited from class com.orientechnologies.orient.core.tx.OTransactionAbstract

database, isolationLevel, locks, status

Fields inherited from interface com.orientechnologies.orient.core.storage.OBasicTransaction

DELETED_RECORD

Constructor Summary

Constructors

Constructor and Description
OTransactionOptimistic(ODatabaseDocumentInternal iDatabase)

Method Summary

Modifier and Type	Method and Description
void	addIndexEntry(OIndex<?> delegate, String iIndexName, OTransactionIndexChanges.OPERATION iOperation, Object key, OIdentifiable iValue, boolean clientTrackOnly) Bufferizes index changes to be flushed at commit time.
ORecordOperation	addRecord(ORecord iRecord, byte iStatus, String iClusterName)
int	amountOfNestedTxs()
void	begin()
void	commit()
void	commit(boolean force) The transaction is reentrant.
void	deleteRecord(ORecord iRecord, ODatabase.OPERATION_MODE iMode) Deletes the given record in this transaction.
boolean	getSentToServer()
void	internalRollback()
boolean	isAlreadyCleared()
boolean	isChanged()
boolean	isUsingLog() Retrieve if log is enabled for the transaction
ORecord	loadRecord(ORID rid, ORecord record, String fetchPlan, boolean ignoreCache)
ORecord	loadRecord(ORID rid, ORecord iRecord, String fetchPlan, boolean ignoreCache, boolean iUpdateCache, boolean loadTombstone, OStorage.LOCKING_STRATEGY lockingStrategy)
ORecord	loadRecord(ORID rid, ORecord iRecord, String fetchPlan, boolean ignoreCache, boolean loadTombstone, OStorage.LOCKING_STRATEGY lockingStrategy)
ORecord	loadRecordIfVersionIsNotLatest(ORID rid, int recordVersion, String fetchPlan, boolean ignoreCache)
ORecord	reloadRecord(ORID rid, ORecord iRecord, String fetchPlan, boolean ignoreCache)
ORecord	reloadRecord(ORID rid, ORecord passedRecord, String fetchPlan, boolean ignoreCache, boolean force)
void	resetChangesTracking()
void	rollback()
void	rollback(boolean force, int commitLevelDiff)
ORecord	saveRecord(ORecord iRecord, String iClusterName, ODatabase.OPERATION_MODE iMode, boolean iForceCreate, ORecordCallback<? extends Number> iRecordCreatedCallback, ORecordCallback<Integer> iRecordUpdatedCallback) Saves the given record in this transaction.
void	setSentToServer(boolean sentToServer)
void	setStatus(OTransaction.TXSTATUS iStatus) Change the status of the transaction.
void	setUsingLog(boolean useLog) If you set this flag to false, you are unable to Rollback data changes in case of exception Restore data in case of server crash
String	toString()

Methods inherited from class com.orientechnologies.orient.core.tx.OTransactionRealAbstract

addChangedDocument, addIndexEntry, checkTransaction, clearIndexEntries, clearRecordEntries, close, getCurrentRecordEntries, getCustomData, getEntryCount, getId, getIndexChanges, getIndexChanges, getIndexChangesInternal, getIndexOperations, getInvolvedIndexes, getNewObjectCounter, getNewRecordEntriesByClass, getNewRecordEntriesByClusterIds, getRecord, getRecordEntry, getRecordOperations, getUpdatedRids, hasRecordCreation, restore, serializeIndexChangeEntry, setCustomData, setDatabase, updateIdentityAfterCommit

Methods inherited from class com.orientechnologies.orient.core.tx.OTransactionAbstract

getClusterName, getDatabase, getIsolationLevel, getLockedRecords, getStatus, isActive, isLockedRecord, lockingStrategy, lockRecord, setIsolationLevel, unlockRecord, updateCacheFromEntries

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.orientechnologies.orient.core.tx.OTransactionInternal

getDatabase

Methods inherited from interface com.orientechnologies.orient.core.storage.OBasicTransaction

getClientTransactionId, isActive

Field Detail

changed

protected boolean changed

Constructor Detail

OTransactionOptimistic

public OTransactionOptimistic(ODatabaseDocumentInternal iDatabase)

Method Detail

begin

public void begin()

commit

public void commit()

commit

public void commit(boolean force)

The transaction is reentrant. If begin() has been called several times, the actual commit happens only after the same amount of commit() calls

Parameters:

force - commit transaction even

amountOfNestedTxs

public int amountOfNestedTxs()

rollback

public void rollback()

internalRollback

public void internalRollback()

Specified by:

internalRollback in class OTransactionAbstract

rollback

public void rollback(boolean force,
                     int commitLevelDiff)

loadRecord

public ORecord loadRecord(ORID rid,
                          ORecord iRecord,
                          String fetchPlan,
                          boolean ignoreCache,
                          boolean loadTombstone,
                          OStorage.LOCKING_STRATEGY lockingStrategy)

loadRecord

public ORecord loadRecord(ORID rid,
                          ORecord iRecord,
                          String fetchPlan,
                          boolean ignoreCache,
                          boolean iUpdateCache,
                          boolean loadTombstone,
                          OStorage.LOCKING_STRATEGY lockingStrategy)

loadRecordIfVersionIsNotLatest

public ORecord loadRecordIfVersionIsNotLatest(ORID rid,
                                              int recordVersion,
                                              String fetchPlan,
                                              boolean ignoreCache)
                                       throws ORecordNotFoundException

Throws:

ORecordNotFoundException

reloadRecord

public ORecord reloadRecord(ORID rid,
                            ORecord iRecord,
                            String fetchPlan,
                            boolean ignoreCache)

reloadRecord

public ORecord reloadRecord(ORID rid,
                            ORecord passedRecord,
                            String fetchPlan,
                            boolean ignoreCache,
                            boolean force)

loadRecord

public ORecord loadRecord(ORID rid,
                          ORecord record,
                          String fetchPlan,
                          boolean ignoreCache)

deleteRecord

public void deleteRecord(ORecord iRecord,
                         ODatabase.OPERATION_MODE iMode)

Description copied from interface: OBasicTransaction

Deletes the given record in this transaction.

Parameters:

iRecord - the record to delete.

iMode - the operation mode.

saveRecord

public ORecord saveRecord(ORecord iRecord,
                          String iClusterName,
                          ODatabase.OPERATION_MODE iMode,
                          boolean iForceCreate,
                          ORecordCallback<? extends Number> iRecordCreatedCallback,
                          ORecordCallback<Integer> iRecordUpdatedCallback)

Description copied from interface: OBasicTransaction

Saves the given record in this transaction.

Parameters:

iRecord - the record to save.

iClusterName - record's cluster name.

iMode - the operation mode.

iForceCreate - the force creation flag, true to force the creation of the record, false to allow updates.

iRecordCreatedCallback - the callback to invoke when the record save operation triggered the creation of the record.

iRecordUpdatedCallback - the callback to invoke when the record save operation triggered the update of the record.

Returns:

the record saved.

toString

public String toString()

Overrides:

toString in class Object

isUsingLog

public boolean isUsingLog()

Description copied from interface: OTransactionInternal

Retrieve if log is enabled for the transaction

setUsingLog

public void setUsingLog(boolean useLog)

Description copied from interface: OTransaction

If you set this flag to false, you are unable to

1. Rollback data changes in case of exception
2. Restore data in case of server crash

So you practically unable to work in multithreaded environment and keep data consistent.

setStatus

public void setStatus(OTransaction.TXSTATUS iStatus)

Description copied from interface: OTransactionInternal

Change the status of the transaction.

addRecord

public ORecordOperation addRecord(ORecord iRecord,
                                  byte iStatus,
                                  String iClusterName)

addIndexEntry

public void addIndexEntry(OIndex<?> delegate,
                          String iIndexName,
                          OTransactionIndexChanges.OPERATION iOperation,
                          Object key,
                          OIdentifiable iValue,
                          boolean clientTrackOnly)

Description copied from class: OTransactionRealAbstract

Bufferizes index changes to be flushed at commit time.

Overrides:

addIndexEntry in class OTransactionRealAbstract

resetChangesTracking

public void resetChangesTracking()

isChanged

public boolean isChanged()

isAlreadyCleared

public boolean isAlreadyCleared()

setSentToServer

public void setSentToServer(boolean sentToServer)

getSentToServer

public boolean getSentToServer()