Android Open Source - makler History Filter

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License

The source code is released under:

GNU General Public License

Java Source Code

package pl.net.newton.Makler.history;
/*from   w w w. j  a  va 2 s  . c  o  m*/
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import pl.net.newton.Makler.db.symbol.Symbol;

public class HistoryFilter {

  public static final int MINUTES_IN_DAY = (17 - 9) * 60 + 35;

  private HistoryProvider provider;

  public HistoryFilter(HistoryProvider provider) {
    this.provider = provider;
  }

  public EntryListWithIndexes historyByInt(int graphRange, Symbol symbol, boolean force) {
    final EntryListWithIndexes list;
    switch (graphRange) {
      case 1:
        list = intraday5Days(symbol, force);
        break;
      case 2:
        list = history1Month(symbol, force);
        break;
      case 3:
        list = history3Month(symbol, force);
        break;
      case 4:
        list = history1Year(symbol, force);
        break;
      case 5:
        list = history2Years(symbol, force);
        break;
      case 6:
        list = history(symbol, force);
        break;
      case 0:
      default:
        list = intradayToday(symbol, force);
        break;
    }
    return list;
  }

  public EntryListWithIndexes intradayToday(Symbol symbol, boolean force) {
    EntryListWithIndexes entries = provider.getIntraday(symbol, force);
    entries = lastDays(entries, 1, 2);
    return entries;
  }

  public EntryListWithIndexes intraday5Days(Symbol symbol, boolean force) {
    EntryListWithIndexes entries = provider.getIntraday(symbol, force);
    return lastDays(entries, 5, 15);
  }

  public EntryListWithIndexes history1Month(Symbol symbol, boolean force) {
    EntryListWithIndexes entries = provider.getIntraday(symbol, force);
    return lastDays(entries, 30, 30);
  }

  public EntryListWithIndexes history3Month(Symbol symbol, boolean force) {
    EntryListWithIndexes entries = provider.getHistory(symbol, force);
    Calendar cal = Calendar.getInstance();
    cal.add(Calendar.MONTH, -3);
    return sinceDate(entries, cal.getTime(), 1);
  }

  public EntryListWithIndexes history1Year(Symbol symbol, boolean force) {
    EntryListWithIndexes entries = provider.getHistory(symbol, force);
    Calendar cal = Calendar.getInstance();
    cal.add(Calendar.YEAR, -1);
    return sinceDate(entries, cal.getTime(), 2);
  }

  public EntryListWithIndexes history2Years(Symbol symbol, boolean force) {
    EntryListWithIndexes entries = provider.getHistory(symbol, force);
    Calendar cal = Calendar.getInstance();
    cal.add(Calendar.YEAR, -2);
    return sinceDate(entries, cal.getTime(), 2);
  }

  public EntryListWithIndexes history(Symbol symbol, boolean force) {
    EntryListWithIndexes entries = provider.getHistory(symbol, force);
    Calendar cal = Calendar.getInstance();
    cal.set(Calendar.YEAR, 1990);
    return sinceDate(entries, cal.getTime(), 5);
  }

  private EntryListWithIndexes sinceDate(EntryListWithIndexes entries, Date since, int resolutionIdDays) {
    if (entries == null) {
      return null;
    }

    int i, l = entries.getLength();
    for (i = 0; i < l; i++) {
      if (!new Date(entries.getDate(i)).before(since)) {
        break;
      }
    }
    return setGraphIndex(entries.subList(i, l), resolutionIdDays * MINUTES_IN_DAY);
  }

  private EntryListWithIndexes lastDays(EntryListWithIndexes entriesWithIndexes, int days,
      int resolutionInMinutes) {
    int d, l = entriesWithIndexes.getLength(), i = l - 1;
    if (l > 0) {
      Calendar cal = Calendar.getInstance();
      cal.setTimeInMillis(entriesWithIndexes.getDate(l - 1));
      int lastDay = cal.get(Calendar.DAY_OF_MONTH);
      for (d = 0, i = l - 1; i >= 0; i--) {
        cal.setTimeInMillis(entriesWithIndexes.getDate(i));
        int day = cal.get(Calendar.DAY_OF_MONTH);
        if (day != lastDay) {
          d++;
          lastDay = day;
        }
        if (d == days) {
          break;
        }
      }
    }
    EntryListWithIndexes sublist = entriesWithIndexes.subList(i + 1, l);
    return setGraphIndex(sublist, resolutionInMinutes);
  }

  private EntryListWithIndexes setGraphIndex(EntryListWithIndexes entriesWithIndexes,
      int resolutionInMinutes) {
    int day = -1;
    int lastDay = -1;
    int lastMinute = -1;
    long dayBeginning = 0;

    List<Integer> indexes = new ArrayList<Integer>();
    EntryList entries = entriesWithIndexes.getEntryList();

    // 9:00 - 17:35
    for (Integer i : entriesWithIndexes.getIndexes()) {
      Calendar cal = Calendar.getInstance();
      cal.setTimeInMillis(entries.getDate(i));

      int currentDay = cal.get(Calendar.DAY_OF_MONTH);
      if (lastDay != currentDay) {
        day++;
        lastDay = currentDay;

        cal.set(Calendar.HOUR_OF_DAY, 9);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        dayBeginning = cal.getTimeInMillis();
      }
      int minuteOfTheDay = (int) (entries.getDate(i) - dayBeginning) / (60 * 1000);
      if (minuteOfTheDay < 0) {
        minuteOfTheDay = 0;
      }
      int currentMinute = day * MINUTES_IN_DAY + minuteOfTheDay;
      if (lastMinute == -1 || (currentMinute - lastMinute) >= resolutionInMinutes) {
        lastMinute = currentMinute;
        entries.setGraphIndex(i, currentMinute);
        indexes.add(i);
      }
    }
    return new EntryListWithIndexes(entries, indexes);
  }

  public boolean isRangeExist(Symbol symbol, int graphRange) {
    return provider.rangeExist(symbol, graphRange);
  }
}

Java Source Code List

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