Package nxt

Class AccountLedger

java.lang.Object

nxt.AccountLedger

public class AccountLedger
extends java.lang.Object

Maintain a ledger of changes to selected accounts

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AccountLedger.Event	Account ledger listener events
static class	AccountLedger.LedgerEntry	Ledger entry
static class	AccountLedger.LedgerEvent	Ledger events There must be a ledger event defined for each transaction (type,subtype) pair.
static class	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 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 java.util.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 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 Detail

trimKeep

public static final int trimKeep

Number of blocks to keep when trimming

Constructor Detail

AccountLedger

public AccountLedger()

Method Detail

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

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 java.util.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