org.gcube.documentstore.persistence

Class FallbackPersistenceBackend

java.lang.Object

org.gcube.documentstore.persistence.PersistenceBackend

org.gcube.documentstore.persistence.FallbackPersistenceBackend

public class FallbackPersistenceBackend
extends PersistenceBackend

Author:

Luca Frosini (ISTI - CNR)

Field Summary

Fields inherited from class org.gcube.documentstore.persistence.PersistenceBackend

aggregationScheduler, closed, countFallback, fallbackPersistence, MAX_FALLBACK, MAX_TIME_TO_FALLBACK, persistenceBackendMonitor, timeoutFallback, timerToFallback

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FallbackPersistenceBackend(File fallbackFile)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() This method is used to close
protected void	closeConnection() This method is used to open db connection
protected File	getFallbackFile()
protected void	openConnection() This method is used to open db connection
void	prepareConnection(PersistenceBackendConfiguration configuration) Prepare the connection to persistence.
void	printLine(String line)
protected void	reallyAccount(Record record) This method contains the code to save the Record

Methods inherited from class org.gcube.documentstore.persistence.PersistenceBackend

account, accountValidateAggregate, accountWithFallback, closeAndClean, flush, getAggregationScheduler, getFallbackPersistence, isOpen, setAggregationScheduler, setFallback, setOpen

Methods inherited from class java.lang.Object

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

Constructor Detail

FallbackPersistenceBackend

protected FallbackPersistenceBackend(File fallbackFile)

Method Detail

getFallbackFile

protected File getFallbackFile()

Returns:

the fallbackFile

prepareConnection

public void prepareConnection(PersistenceBackendConfiguration configuration)

Prepare the connection to persistence. This method must be used by implementation class to prepare the connection with the persistence storage, DB, file etc.

Specified by:

prepareConnection in class PersistenceBackend

Parameters:

configuration - The configuration to create the connection

openConnection

protected void openConnection()
                       throws Exception

Description copied from class: PersistenceBackend

This method is used to open db connection

Specified by:

openConnection in class PersistenceBackend

Throws:

Exception

close

public void close()
           throws Exception

This method is used to close

Specified by:

close in class PersistenceBackend

Throws:

Exception

reallyAccount

protected void reallyAccount(Record record)
                      throws Exception

This method contains the code to save the Record This method is synchronized on File used, so any actions which has to modify, rename or delete the file must be synchronized on this file. To retrieve it use getFallbackFile() method. This is intended for internal library usage only so that is protected

Specified by:

reallyAccount in class PersistenceBackend

Throws:

Exception

printLine

public void printLine(String line)
               throws Exception

Throws:

Exception

closeConnection

protected void closeConnection()
                        throws Exception

Description copied from class: PersistenceBackend

This method is used to open db connection

Specified by:

closeConnection in class PersistenceBackend

Throws:

Exception