com.liferay.stocks.util.StocksWebCacheItem.java Source code

Introduction

Here is the source code for com.liferay.stocks.util.StocksWebCacheItem.java

Source

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.stocks.util;

import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.HttpUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.Time;
import com.liferay.portal.kernel.webcache.WebCacheException;
import com.liferay.portal.kernel.webcache.WebCacheItem;
import com.liferay.stocks.model.Stocks;

import java.util.StringTokenizer;

/**
 * @author Brian Wing Shun Chan
 */
public class StocksWebCacheItem implements WebCacheItem {

    public StocksWebCacheItem(String symbol) {
        _symbol = symbol;
    }

    @Override
    public Object convert(String key) throws WebCacheException {
        String symbol = _symbol;
        double lastTrade = 0.0;
        double change = 0.0;
        double open = 0.0;
        double dayHigh = 0.0;
        double dayLow = 0.0;
        long volume = 0;

        Stocks stocks = new Stocks(symbol, lastTrade, change, open, dayHigh, dayLow, volume);

        try {
            String text = HttpUtil
                    .URLtoString("http://finance.yahoo.com/d/quotes.csv?s=" + symbol + "&f=sl1d1t1c1ohgv&e=.csv");

            StringTokenizer st = new StringTokenizer(text, StringPool.COMMA);

            // Skip symbol

            st.nextToken();

            try {
                lastTrade = GetterUtil.getDouble(st.nextToken().replace('"', ' ').trim());

                stocks.setLastTrade(lastTrade);
            } catch (NumberFormatException nfe) {
                stocks.setLastTradeAvailable(false);
            }

            // Skip date and time

            st.nextToken();
            st.nextToken();

            try {
                change = GetterUtil.getDouble(st.nextToken().replace('"', ' ').trim());

                stocks.setChange(change);
            } catch (NumberFormatException nfe) {
                stocks.setChangeAvailable(false);
            }

            try {
                open = GetterUtil.getDouble(st.nextToken().replace('"', ' ').trim());

                stocks.setOpen(open);
            } catch (NumberFormatException nfe) {
                stocks.setOpenAvailable(false);
            }

            try {
                dayHigh = GetterUtil.getDouble(st.nextToken().replace('"', ' ').trim());

                stocks.setDayHigh(dayHigh);
            } catch (NumberFormatException nfe) {
                stocks.setDayHighAvailable(false);
            }

            try {
                dayLow = GetterUtil.getDouble(st.nextToken().replace('"', ' ').trim());

                stocks.setDayLow(dayLow);
            } catch (NumberFormatException nfe) {
                stocks.setDayLowAvailable(false);
            }

            try {
                volume = GetterUtil.getLong(st.nextToken().replace('"', ' ').trim());

                stocks.setVolume(volume);
            } catch (NumberFormatException nfe) {
                stocks.setVolumeAvailable(false);
            }

            if (!stocks.isValid()) {
                throw new WebCacheException(symbol);
            }
        } catch (Exception e) {
            throw new WebCacheException(symbol + " " + e.toString());
        }

        return stocks;
    }

    @Override
    public long getRefreshTime() {
        return _REFRESH_TIME;
    }

    private static final long _REFRESH_TIME = Time.MINUTE * 20;

    private String _symbol;

}