Coverage report

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ca.spaz.cron.datasource.www.NutritionDataDatasource
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 1   
 /*******************************************************************************
 2   
  * ******************************************************************************
 3   
  * Copyright (c) 2005 Chris Rose and AIMedia All rights reserved.
 4   
  * NutritionDataDatasource and the accompanying materials are made available
 5   
  * under the terms of the Common Public License v1.0 which accompanies this
 6   
  * distribution, and is available at http://www.eclipse.org/legal/cpl-v10.html
 7   
  * Contributors: Chris Rose
 8   
  ******************************************************************************/
 9   
 package ca.spaz.cron.datasource.www;
 10   
 
 11   
 import java.io.IOException;
 12   
 import java.net.*;
 13   
 import java.util.*;
 14   
 import java.util.regex.*;
 15   
 
 16   
 import org.apache.log4j.Logger;
 17   
 import org.xml.sax.SAXException;
 18   
 
 19   
 import ca.spaz.cron.CRONOMETER;
 20   
 import ca.spaz.cron.database.*;
 21   
 import ca.spaz.cron.datasource.FoodDatasourceException;
 22   
 
 23   
 import com.meterware.httpunit.*;
 24   
 
 25   
 /**
 26   
  * A datasource that is tied to the website http://www.nutritiondata.com/
 27   
  *
 28   
  * @author Chris Rose
 29   
  */
 30   
 public class NutritionDataDatasource extends AbstractWWWDatasource {
 31   
    /**
 32   
     * Logger for this class
 33   
     */
 34  0 
    private static final Logger logger = Logger
 35  0 
          .getLogger(NutritionDataDatasource.class);
 36   
 
 37  0 
    private static final Pattern ND_COM_FN_END = Pattern.compile("}");
 38   
 
 39  0 
    private static final Pattern ND_COM_FN_START = Pattern
 40   
          .compile("function +foodcat");
 41   
 
 42  0 
    private static final Pattern ND_COM_GROUP = Pattern
 43   
          .compile("<option value=\"(\\d+)\">([^<]+)</option>");
 44   
 
 45   
    private static final String ND_COM_GROUPS_URL = "http://www.nutritiondata.com/color/nutrition.js";
 46   
 
 47  0 
    private static final Pattern ND_COM_FOODSEARCH_FOOD = Pattern.compile(
 48   
          "<a class=\"list\" href=\"(facts[^\"]+)\">", Pattern.CASE_INSENSITIVE);
 49   
 
 50   
    private static final String ND_COM_BASE_URL = "http://www.nutritiondata.com/";
 51   
    private static final String ND_COM_SEARCH_URL = "search.php?q=$query$&sourceid=Mozilla-search";
 52   
 
 53   
    private URL baseURL;
 54   
 
 55   
    public static final NutritionDataDatasource createReadonlyFoodSource() {
 56  0 
       return new NutritionDataDatasource("NutritionData.com");
 57   
    }
 58   
 
 59   
    /**
 60   
     * @param name
 61   
     */
 62   
    private NutritionDataDatasource(String name) {
 63  0 
       super(name);
 64   
       try {
 65  0 
          this.baseURL = new URL(ND_COM_BASE_URL);
 66  0 
       } catch (MalformedURLException e) {
 67  0 
          throw new FoodDatasourceException("Unable to create URL -- cannot proceed", e);
 68  0 
       }
 69  0 
    }
 70   
 
 71   
    /*
 72   
     * (non-Javadoc)
 73   
     *
 74   
     * @see ca.spaz.cron.datasource.AbstractFoodDataSource#doFindAllFoods()
 75   
     */
 76   
    protected List doFindAllFoods() {
 77  0 
       return null;
 78   
    }
 79   
 
 80   
    /*
 81   
     * (non-Javadoc)
 82   
     *
 83   
     * @see ca.spaz.cron.datasource.www.AbstractWWWDatasource#doGetSources()
 84   
     */
 85   
    protected List doGetSources() {
 86  0 
       List ret = new ArrayList();
 87  0 
       ret.add("NutritionData.com");
 88  0 
       return ret;
 89   
    }
 90   
 
 91   
    /*
 92   
     * (non-Javadoc)
 93   
     *
 94   
     * @see ca.spaz.cron.datasource.www.AbstractWWWDatasource#doGetFoodGroups()
 95   
     */
 96   
    protected List doGetFoodGroups() {
 97  0 
       List ret = null;
 98   
       try {
 99  0 
          ret = getFoodGroups(new URL(ND_COM_GROUPS_URL), ND_COM_FN_START,
 100   
                ND_COM_FN_END, ND_COM_GROUP, 1, 2);
 101  0 
       } catch (MalformedURLException e) {
 102  0 
          logger.error("doGetFoodGroups()", e);
 103  0 
          ret = Collections.EMPTY_LIST;
 104  0 
       } catch (IOException e) {
 105  0 
          logger.error("doGetFoodGroups()", e);
 106  0 
          ret = Collections.EMPTY_LIST;
 107  0 
       }
 108  0 
       return ret;
 109   
    }
 110   
 
 111   
    /*
 112   
     * (non-Javadoc)
 113   
     *
 114   
     * @see ca.spaz.cron.datasource.www.AbstractWWWDatasource#doClose()
 115   
     */
 116   
    protected void doClose() {
 117   
       // Nothing here, unless we have a connection to close.
 118  0 
    }
 119   
 
 120   
    /*
 121   
     * (non-Javadoc)
 122   
     *
 123   
     * @see ca.spaz.cron.datasource.AbstractFoodDataSource#doFindFoods(java.lang.String[])
 124   
     */
 125   
    protected List doFindFoods(String[] keys) {
 126  0 
       return doFindFoods(keys, null, class="keyword">null);
 127   
    }
 128   
 
 129   
    /*
 130   
     * (non-Javadoc)
 131   
     *
 132   
     * @see ca.spaz.cron.datasource.AbstractFoodDataSource#doFindFoods(java.lang.String[],
 133   
     *      java.lang.String, java.lang.String)
 134   
     */
 135   
    protected List doFindFoods(String[] keys, String foodGroup, String source) {
 136  0 
       if (foodGroup != null) {
 137   
          // Something here. Not sure what, really.
 138   
       }
 139  0 
       if (source != null) {
 140   
          // Something here. Not sure what, really.
 141   
       }
 142  0 
       List ret = new ArrayList();
 143   
 
 144  0 
       StringBuffer sb = new StringBuffer();
 145  0 
       for (int i = 0; i < keys.length; i++) {
 146  0 
          sb.append(keys[i]);
 147  0 
          if (i < (keys.length - 1)) {
 148  0 
             sb.append("+");
 149   
          }
 150   
       }
 151  0 
       String query = sb.toString();
 152  0 
       sb = null;
 153   
 
 154  0 
       String urlQuery = ND_COM_SEARCH_URL.replaceAll("\\$query\\$", query);
 155   
 
 156  0 
       HttpUnitOptions.setExceptionsThrownOnScriptError(false);
 157   
 
 158  0 
       WebConversation conv = new WebConversation();
 159  0 
       WebRequest req = new GetMethodWebRequest(baseURL, urlQuery);
 160   
 
 161   
       try {
 162  0 
          WebResponse resp = conv.getResponse(req);
 163  0 
          String doc = resp.getText();
 164   
 
 165  0 
          Matcher foodFinder = ND_COM_FOODSEARCH_FOOD.matcher(doc);
 166  0 
          if (logger.isDebugEnabled()) {
 167  0 
             logger.debug("doFindFoods(String[], String, String)"
 168   
                   + ND_COM_FOODSEARCH_FOOD.toString());
 169   
          }
 170  0 
          List foods = new ArrayList();
 171  0 
          int idx = 0;
 172  0 
          while (foodFinder.find(idx)) {
 173  0 
             foods.add(foodFinder.group(1));
 174  0 
             idx = foodFinder.end(1);
 175  0 
          }
 176   
 
 177  0 
          for (Iterator iter = foods.iterator(); iter.hasNext();) {
 178  0 
             String urlpart = (String) iter.next();
 179   
             URL loader;
 180   
             try {
 181  0 
                loader = new URL(baseURL, urlpart);
 182  0 
                Food newFood = loadFoodFromURL(conv, loader);
 183  0 
                if (null != newFood) {
 184  0 
                   ret.add(newFood);
 185   
                }
 186  0 
             } catch (MalformedURLException e) {
 187  0 
                logger.error("doFindFoods(String[], String, String)", e);
 188  0 
             }
 189  0 
          }
 190  0 
       } catch (MalformedURLException e) {
 191  0 
          logger.error("doFindFoods(String[], String, String)", e);
 192  0 
       } catch (IOException e) {
 193  0 
          logger.error("doFindFoods(String[], String, String)", e);
 194  0 
       } catch (SAXException e) {
 195  0 
          logger.error("doFindFoods(String[], String, String)", e);
 196  0 
       }
 197   
 
 198  0 
       return ret;
 199   
    }
 200   
 
 201   
    private NutritionDataFood loadFoodFromURL(WebConversation conv, URL loader) {
 202  0 
       NutritionDataFood ret = null;
 203  0 
       WebRequest req = new GetMethodWebRequest(loader, "");
 204   
       WebResponse resp;
 205   
       try {
 206  0 
          resp = conv.getResponse(req);
 207  0 
          ret = new NutritionDataFood(this, resp);
 208  0 
       } catch (MalformedURLException e) {
 209  0 
          logger.error("loadFoodFromURL(WebConversation, URL)", e);
 210  0 
       } catch (IOException e) {
 211  0 
          logger.error("loadFoodFromURL(WebConversation, URL)", e);
 212  0 
       } catch (SAXException e) {
 213  0 
          logger.error("loadFoodFromURL(WebConversation, URL)", e);
 214  0 
       }
 215  0 
       return ret;
 216   
    }
 217   
 
 218   
    /*
 219   
     * (non-Javadoc)
 220   
     *
 221   
     * @see ca.spaz.cron.datasource.AbstractFoodDataSource#doGetMeasuresFor(ca.spaz.cron.database.Food)
 222   
     */
 223   
    protected List doGetMeasuresFor(Food food) {
 224  0 
       return null;
 225   
    }
 226   
 
 227   
    /*
 228   
     * (non-Javadoc)
 229   
     *
 230   
     * @see ca.spaz.cron.datasource.AbstractFoodDataSource#doGetNutrientsFor(ca.spaz.cron.database.Food,
 231   
     *      ca.spaz.cron.database.NutrientTable)
 232   
     */
 233   
    protected void doGetNutrientsFor(Food food, NutrientTable nutrients) {
 234   
 
 235  0 
    }
 236   
 
 237   
    /*
 238   
     * (non-Javadoc)
 239   
     *
 240   
     * @see ca.spaz.cron.datasource.IFoodDatasource#isAvailable()
 241   
     */
 242   
    public boolean isAvailable() {
 243  0 
       return false;
 244   
    }
 245   
 
 246   
    public static void main(String[] args) {
 247  0 
       CRONOMETER.configureLogger();
 248  0 
       NutritionDataDatasource nds = new NutritionDataDatasource("foo");
 249   
 
 250  0 
       List foods = nds.findFoods(new String[] { "tutti" });
 251  0 
    }
 252   
 
 253   
    public boolean containsFood(Food food) {
 254   
       // TODO Auto-generated method stub
 255  0 
       return false;
 256   
    }
 257   
 
 258   
 }

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