@Override
public void externalExchanges(Map<String, Exchange> external)
{
for (Entry<String, Exchange> entry : external.entrySet())
{
OGSADAIDataSourceExchange exchange = (OGSADAIDataSourceExchange)entry.getValue();
DataSourceObserver observer = new DataSourceObserver(entry.getKey());
exchange.addObserver(observer);
mExternalExchangeObservers.add(observer);
}
}