private HashMap<Guid, Transaction> getAccountInstrumentTransactions() { HashMap<Guid, Transaction> transactions = null; HashMap<Guid, Transaction> accountTransactions = this._account.get_Transactions(); HashMap<Guid, Transaction> instrumentTransactions = this._instrument.get_Transactions(); if (accountTransactions == null || instrumentTransactions == null) { return transactions; } transactions = new HashMap<Guid, Transaction>(); for (Iterator<Transaction> iterator = accountTransactions.values().iterator(); iterator.hasNext(); ) { Transaction accountTransaction = iterator.next(); Guid accountTransactionId = accountTransaction.get_Id(); if (instrumentTransactions.containsKey(accountTransactionId)) { transactions.put(accountTransactionId, accountTransaction); } } return transactions; }