Package nxt.account

Class AccountLedger

java.lang.Object

nxt.account.AccountLedger

public class AccountLedger
extends Object

Maintain a ledger of changes to selected accounts

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	AccountLedger.Event	Account ledger listener events
static class	AccountLedger.LedgerEntry	Ledger entry
static enum	AccountLedger.LedgerEvent	Ledger events There must be a ledger event defined for each transaction (type,subtype) pair.
static interface	AccountLedger.LedgerEventId
static enum	AccountLedger.LedgerHolding	Ledger holdings When adding a new holding, do not change the existing code assignments since they are stored in the holding_type field of the account_ledger table.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	trimKeep	Number of blocks to keep when trimming

Constructor Summary

Constructors

Constructor	Description
AccountLedger()

Method Summary

Modifier and Type	Method	Description
static boolean	addListener(Listener<AccountLedger.LedgerEntry> listener, AccountLedger.Event eventType)	Add a listener
static void	clearEntries()	Clear pending ledger entries
static void	commitEntries()	Commit pending ledger entries
static List<AccountLedger.LedgerEntry>	getEntries(long accountId, AccountLedger.LedgerEvent event, long eventId, AccountLedger.LedgerHolding holding, long holdingId, int firstIndex, int lastIndex)	Return the ledger entries sorted in descending insert order
static AccountLedger.LedgerEntry	getEntry(long ledgerId)	Return a single entry identified by the ledger entry identifier
static void	init()	Initialization We don't do anything but we need to be called from Nxt.init() in order to register our table
static AccountLedger.LedgerEventId	newEventId(long eventId, byte[] eventHash, Chain chain)
static AccountLedger.LedgerEventId	newEventId(Block block)
static AccountLedger.LedgerEventId	newEventId(Transaction transaction)
static boolean	removeListener(Listener<AccountLedger.LedgerEntry> listener, AccountLedger.Event eventType)	Remove a listener

Methods inherited from class java.lang.Object

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

Field Details

trimKeep

public static final int trimKeep

Number of blocks to keep when trimming

Constructor Details

AccountLedger

public AccountLedger()

Method Details

init

public static void init()

Initialization We don't do anything but we need to be called from Nxt.init() in order to register our table

addListener

public static boolean addListener(Listener<AccountLedger.LedgerEntry> listener,
 AccountLedger.Event eventType)

Add a listener

Parameters:

listener - Listener

eventType - Event to listen for

Returns:

True if the listener was added

removeListener

public static boolean removeListener(Listener<AccountLedger.LedgerEntry> listener,
 AccountLedger.Event eventType)

Remove a listener

Parameters:

listener - Listener

eventType - Event to listen for

Returns:

True if the listener was removed

commitEntries

public static void commitEntries()

Commit pending ledger entries

clearEntries

public static void clearEntries()

Clear pending ledger entries

getEntry

public static AccountLedger.LedgerEntry getEntry(long ledgerId)

Return a single entry identified by the ledger entry identifier

Parameters:

ledgerId - Ledger entry identifier

Returns:

Ledger entry or null if entry not found

getEntries

public static List<AccountLedger.LedgerEntry> getEntries(long accountId,
 AccountLedger.LedgerEvent event,
 long eventId,
 AccountLedger.LedgerHolding holding,
 long holdingId,
 int firstIndex,
 int lastIndex)

Return the ledger entries sorted in descending insert order

Parameters:

accountId - Account identifier or zero if no account identifier

event - Ledger event or null

eventId - Ledger event identifier or zero if no event identifier

holding - Ledger holding or null

holdingId - Ledger holding identifier or zero if no holding identifier

firstIndex - First matching entry index, inclusive

lastIndex - Last matching entry index, inclusive

Returns:

List of ledger entries

newEventId

public static AccountLedger.LedgerEventId newEventId(long eventId,
 byte[] eventHash,
 Chain chain)

newEventId

public static AccountLedger.LedgerEventId newEventId(Transaction transaction)

newEventId

public static AccountLedger.LedgerEventId newEventId(Block block)