public void saveDailyExchangeRate(ExchangeRate e) throws CantSaveExchangeRateException {
// Create new exchangeRate with standarized daily timestamp
e =
new ExchangeRateImpl(
e.getFromCurrency(),
e.getToCurrency(),
e.getSalePrice(),
e.getPurchasePrice(),
DateHelper.getStandarizedTimestampFromTimestamp(e.getTimestamp()));
// If it exists, return
if (this.dailyExchangeRateExists(e)) return;
// Else, save it
DatabaseTable table =
this.database.getTable(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_TABLE_NAME);
DatabaseTableRecord newRecord = table.getEmptyRecord();
constructRecordFromExchangeRate(newRecord, e);
try {
table.insertRecord(newRecord);
} catch (CantInsertRecordException ex) {
throw new CantSaveExchangeRateException(
CantSaveExchangeRateException.DEFAULT_MESSAGE,
ex,
"BitcoinVenezuela provider plugin",
"Cant save new record in DAILY_EXCHANGE_RATES_TABLE");
}
}
public boolean dailyExchangeRateExists(ExchangeRate e) {
try {
getDailyExchangeRateFromDate(
new CurrencyPairImpl(e.getFromCurrency(), e.getToCurrency()), e.getTimestamp());
return true;
} catch (CantGetExchangeRateException ex) {
return false;
}
}
public void updateDailyExchangeRateTable(
CurrencyPair currencyPair, List<ExchangeRate> exchangeRates)
throws CantSaveExchangeRateException {
List<String> exchangeRateTimestampsInDatabase = new ArrayList<>();
DatabaseTable table =
this.database.getTable(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_TABLE_NAME);
table.addStringFilter(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_FROM_CURRENCY_COLUMN_NAME,
currencyPair.getFrom().getCode(),
DatabaseFilterType.EQUAL);
table.addStringFilter(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_TO_CURRENCY_COLUMN_NAME,
currencyPair.getTo().getCode(),
DatabaseFilterType.EQUAL);
try {
table.loadToMemory();
for (DatabaseTableRecord record : table.getRecords()) {
String timestamp =
record.getStringValue(
BitcoinVenezuelaProviderDatabaseConstants
.DAILY_EXCHANGE_RATES_TIMESTAMP_COLUMN_NAME);
exchangeRateTimestampsInDatabase.add(timestamp);
}
} catch (CantLoadTableToMemoryException e) {
throw new CantSaveExchangeRateException(
CantSaveExchangeRateException.DEFAULT_MESSAGE,
e,
"Failed to get ExchangeRates in database for CurrencyPair: " + currencyPair.toString(),
"Couldn't load table to memory");
}
for (ExchangeRate e : exchangeRates) {
String currentTimestamp = String.valueOf(e.getTimestamp());
if (!exchangeRateTimestampsInDatabase.contains(currentTimestamp)) {
this.saveDailyExchangeRate(e); // TODO: improve this.. saving one by one..
}
}
}
private void constructRecordFromExchangeRate(
DatabaseTableRecord newRecord, ExchangeRate exchangeRate) {
newRecord.setUUIDValue(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_ID_COLUMN_NAME,
UUID.randomUUID());
newRecord.setStringValue(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_FROM_CURRENCY_COLUMN_NAME,
exchangeRate.getFromCurrency().getCode());
newRecord.setStringValue(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_TO_CURRENCY_COLUMN_NAME,
exchangeRate.getToCurrency().getCode());
newRecord.setStringValue(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_SALE_PRICE_COLUMN_NAME,
String.valueOf(exchangeRate.getSalePrice()));
newRecord.setStringValue(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_PURCHASE_PRICE_COLUMN_NAME,
String.valueOf(exchangeRate.getPurchasePrice()));
newRecord.setLongValue(
BitcoinVenezuelaProviderDatabaseConstants.DAILY_EXCHANGE_RATES_TIMESTAMP_COLUMN_NAME,
exchangeRate.getTimestamp());
}