org.gcube.accounting.persistence

Class Persistence

java.lang.Object

org.gcube.accounting.persistence.Persistence

Direct Known Subclasses:

CouchDBPersistence, FallbackPersistence

public abstract class Persistence
extends Object

Author:

Luca Frosini (ISTI - CNR) http://www.lucafrosini.com/

Field Summary

Fields

Modifier and Type	Field and Description
protected static FallbackPersistence	fallback
protected static Persistence	persistence The singleton instance of persistence

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Persistence()

Method Summary

Methods

Modifier and Type	Method and Description
void	account(UsageRecord usageRecord) Persist the #UsageRecord.
abstract void	close()
static UsageRecord	createTestUsageRecord()
static Persistence	getInstance()
protected static void	init()
protected abstract void	prepareConnection() Prepare the connection to persistence.
protected abstract void	reallyAccount(UsageRecord usageRecord) This method contains the code to save the #UsageRecord
static void	setFallbackLocation(String path)

Methods inherited from class java.lang.Object

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

Field Detail

persistence

protected static Persistence persistence

The singleton instance of persistence

fallback

protected static FallbackPersistence fallback

Constructor Detail

Persistence

protected Persistence()

Method Detail

setFallbackLocation

public static void setFallbackLocation(String path)

init

protected static void init()

createTestUsageRecord

public static UsageRecord createTestUsageRecord()

getInstance

public static Persistence getInstance()

Returns:

the singleton instance of persistence

Throws:

Exception - if fails

prepareConnection

protected abstract void prepareConnection()
                                   throws Exception

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

Throws:

Exception - if fails

reallyAccount

protected abstract void reallyAccount(UsageRecord usageRecord)
                               throws Exception

This method contains the code to save the #UsageRecord

Throws:

Exception

account

public void account(UsageRecord usageRecord)

Persist the #UsageRecord. This method account the record in a separated thread. So that the program can continue the execution. If the persistence fails the class write that the record in a local file so that the #UsageRecord can be recorder later.

Parameters:

usageRecord - the #UsageRecord to persist

close

public abstract void close()
                    throws Exception

Throws:

Exception