GoogleQuoteFetcher.java

package storm.applications.model.finance;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.joda.time.DateTime;

public class GoogleQuoteFetcher extends QuoteFetcher {

    @Override
    public String fetchQuotes(String symbol, int days, int interval)
            throws Exception {

        String url = "http://www.google.com/finance/getprices?i=" + interval
                + "&p=" + days + "d&f=d,o,h,l,c,v&df=cpct&q=" + symbol;

        return fetchURLasString(url);
    }

    @Override
    public List<Quote> parseQuotes(String symbol, String quoteList, int interval) {
        String[] lines = dropLines(quoteList, 6);

        List<Quote> quotes = new ArrayList<>();

        for (String line : lines) {
            if (line.startsWith("TIMEZONE_OFFSET")) {
                continue;
            }

            String[] parts = line.split(",");

            String dateStr = parts[0];

            DateTime date;

            if (dateStr.startsWith("a")) {
                final String intPart = dateStr.substring(1);
                final int timestamp = Integer.parseInt(intPart);
                date = new DateTime((long) timestamp * 1000L);
            } else {
                DateTime previousDate = quotes.get(quotes.size() - 1).getOpenDate();
                date = previousDate.plusSeconds(interval);
            }

            Quote quote = new Quote(symbol, date, interval,
                    new BigDecimal(parts[4]),
                    new BigDecimal(parts[2]),
                    new BigDecimal(parts[3]),
                    new BigDecimal(parts[1]),
                    Integer.parseInt(parts[5]));

            quotes.add(quote);
        }
        
        Collections.sort(quotes, new Comparator<Quote>() {
            @Override
            public int compare(Quote a, Quote b) {
                return a.getOpenDate().compareTo(b.getOpenDate());
            }
        });

        return quotes;
    }
}