Example usage for org.apache.mahout.cf.taste.impl.model GenericItemPreferenceArray GenericItemPreferenceArray

Introduction

In this page you can find the example usage for org.apache.mahout.cf.taste.impl.model GenericItemPreferenceArray GenericItemPreferenceArray.

Prototype

public GenericItemPreferenceArray(List<? extends Preference> prefs) 

Source Link

Usage

From source file:org.easyrec.mahout.store.impl.MahoutDataModelMappingDAOMysqlImpl.java

License:Open Source License

@Override
public PreferenceArray getPreferencesForItem(int tenantId, Date cutoffDate, long itemID, int actionTypeId)
        throws TasteException {
    Object[] args = new Object[] { tenantId, cutoffDate, itemID, actionTypeId };
    int[] argTypes = new int[] { Types.INTEGER, Types.TIMESTAMP, Types.INTEGER, Types.INTEGER };

    try {/*from w  ww .j  ava 2s.c  o m*/
        return new GenericItemPreferenceArray(getJdbcTemplate().query(getPreferencesForItemQuery, args,
                argTypes, genericPreferenceRowMapper));
    } catch (EmptyResultDataAccessException e) {
        logger.warn("An error occurred!", e);
        throw new NoSuchItemException(itemID);
    }
}

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From source file:org.easyrec.mahout.store.impl.MahoutDataModelMappingDAOMysqlImpl.java

License:Open Source License

@Override
public PreferenceArray getBooleanPreferencesForItem(int tenantId, Date cutoffDate, long itemID,
        int actionTypeId) throws TasteException {
    Object[] args = new Object[] { tenantId, cutoffDate, itemID, actionTypeId };
    int[] argTypes = new int[] { Types.INTEGER, Types.TIMESTAMP, Types.INTEGER, Types.INTEGER };

    try {/*from  w  ww . ja  v a2s  . c  o m*/
        return new GenericItemPreferenceArray(getJdbcTemplate().query(getPreferencesForItemQuery, args,
                argTypes, genericBooleanPreferenceRowMapper));
    } catch (EmptyResultDataAccessException e) {
        logger.warn("An error occurred!", e);
        throw new NoSuchItemException(itemID);
    }
}

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From source file:org.zaizi.mahout.alfresco.datamodel.AlfrescoDataModelImpl.java

License:Open Source License

public PreferenceArray getPreferencesForItem(long itemID) throws TasteException {

    logger.trace("getPreferencesForItem {" + itemID + "}");

    List<GenericPreference> resultlist;

    NodeRef currentNodeRef;//www.j ava  2 s. c  om
    float rating;
    long userId;

    currentNodeRef = ZaiziAlfrescoServiceUtil.getNodeRefByEntryId(itemID);

    List<Rating> ratings = getRatings(currentNodeRef);

    resultlist = new ArrayList<GenericPreference>(ratings.size());

    for (Rating ratingRef : ratings) {
        userId = ZaiziAlfrescoServiceUtil
                .getNodeId(ZaiziAlfrescoServiceUtil.getPersonService().getPerson(ratingRef.getAppliedBy()));
        rating = ratingRef.getScore();
        resultlist.add(new GenericPreference(userId, itemID, rating));
    }

    if (logger.isTraceEnabled()) {
        logger.trace("Returining :" + resultlist);
    }

    if (mahoutRatingScheme.equals(org.zaizi.mahout.config.RatingScheme.BOOLEAN_PREF))
        return new BooleanItemPreferenceArray(resultlist, false);
    else
        return new GenericItemPreferenceArray(resultlist);

}

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From source file:org.zaizi.mahout.alfresco.datamodel.AlfrescoViewedDocumentDataModelImpl.java

License:Open Source License

public synchronized PreferenceArray getPreferencesForItem(long itemID) throws TasteException {
    PreferenceArray prefs = preferenceForItems.get(itemID);
    if (prefs == null) {
        return new GenericItemPreferenceArray(0);
    }/* w  ww.  j  ava  2  s .  c  om*/
    return prefs;
}

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From source file:org.zaizi.mahout.alfresco.datamodel.AlfrescoViewedDocumentDataModelImpl.java

License:Open Source License

public synchronized void setPreference(long userID, long itemID, float value) throws TasteException {
    Preference newPref = new GenericPreference(userID, itemID, normalizeScore((int) value));

    // PreferenceFromUsers
    PreferenceArray prefs = preferenceFromUsers.get(userID);
    if (prefs == null) {
        PreferenceArray newPrefArray = new GenericUserPreferenceArray(1);
        newPrefArray.set(0, newPref);/*  w  w  w .j a v a  2 s  .  c o m*/
        preferenceFromUsers.put(userID, newPrefArray);
    } else {
        boolean finded = false;
        int i = 0;
        while (i < prefs.length() && !finded)
            if (prefs.getItemID(i) == itemID)
                finded = true;
            else
                i++;

        if (finded) {
            prefs.set(i, newPref);
        } else {
            PreferenceArray newPrefArray = new GenericUserPreferenceArray(prefs.length() + 1);
            for (i = 0; i < prefs.length(); i++)
                newPrefArray.set(i, prefs.get(i));
            newPrefArray.set(i, newPref);
            preferenceFromUsers.put(userID, newPrefArray);
        }
    }

    // Preference From Items
    prefs = preferenceForItems.get(itemID);
    if (prefs == null) {
        PreferenceArray newPrefArray = new GenericItemPreferenceArray(1);
        newPrefArray.set(0, newPref);
        preferenceForItems.put(itemID, newPrefArray);
    } else {
        boolean finded = false;
        int i = 0;
        while (i < prefs.length() && !finded)
            if (prefs.getItemID(i) == itemID)
                finded = true;
            else
                i++;

        if (finded) {
            prefs.set(i, newPref);
        } else {
            PreferenceArray newPrefArray = new GenericItemPreferenceArray(prefs.length() + 1);
            for (i = 0; i < prefs.length(); i++)
                newPrefArray.set(i, prefs.get(i));
            newPrefArray.set(i, newPref);
            preferenceForItems.put(itemID, newPrefArray);
        }
    }
}

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From source file:org.zaizi.mahout.alfresco.datamodel.AlfrescoViewedDocumentDataModelImpl.java

License:Open Source License

public synchronized void setPreferenceData(Map<Long, List<UserViewedCount>> preferences) {
    if (preferences != null && preferences.size() > 0) {

        if (preferenceForItems.size() > 0)
            preferenceForItems = new FastByIDMap<PreferenceArray>();

        if (preferenceFromUsers.size() > 0)
            preferenceFromUsers = new FastByIDMap<PreferenceArray>();

        Map<Long, List<Preference>> prefUsers = new HashMap<Long, List<Preference>>();

        Iterator<Long> it = preferences.keySet().iterator();
        while (it.hasNext()) {
            Long nextItemId = it.next();
            List<UserViewedCount> prefsForItem = preferences.get(nextItemId);

            if (prefsForItem.size() > 0) {
                PreferenceArray nextArray = new GenericItemPreferenceArray(prefsForItem.size());
                for (int i = 0; i < prefsForItem.size(); i++) {
                    long userId = prefsForItem.get(i).getUserId();
                    float value = normalizeScore(prefsForItem.get(i).getNumViewed());
                    Preference nextPreference = new GenericPreference(userId, nextItemId, value);

                    nextArray.set(i, nextPreference);
                    List<Preference> upList = prefUsers.get(userId);
                    if (upList == null) {
                        upList = new ArrayList<Preference>();
                        upList.add(nextPreference);
                        prefUsers.put(userId, upList);
                    } else
                        upList.add(nextPreference);

                }//from w  w  w . jav  a 2 s .  c  o  m

                preferenceForItems.put(nextItemId, nextArray);
            }
        }

        Iterator<Entry<Long, List<Preference>>> userIt = prefUsers.entrySet().iterator();
        while (userIt.hasNext()) {
            Entry<Long, List<Preference>> nextEntry = userIt.next();
            List<Preference> nextList = nextEntry.getValue();
            PreferenceArray nextArray = new GenericUserPreferenceArray(nextList.size());
            for (int i = 0; i < nextList.size(); i++)
                nextArray.set(i, nextList.get(i));

            preferenceFromUsers.put(nextEntry.getKey(), nextArray);
        }

    }
}

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From source file:org.zaizi.mahout.alfresco.datamodel.MetaversantDataModelImpl.java

License:Open Source License

public PreferenceArray getPreferencesForItem(long itemID) throws TasteException {

    logger.trace("getPreferencesForItem { " + itemID + "}");

    List<GenericPreference> resultlist;

    NodeRef currentNodeRef;/*from  ww w.  jav  a 2s. c  o m*/
    int rating;
    long userId;

    currentNodeRef = ZaiziAlfrescoServiceUtil.getNodeRefByEntryId(itemID);
    List<NodeRef> ratings = getRatings(currentNodeRef);
    resultlist = new ArrayList<GenericPreference>(ratings.size());
    for (NodeRef ratingRef : ratings) {
        userId = ZaiziAlfrescoServiceUtil.getNodeId(
                ZaiziAlfrescoServiceUtil.getPersonService().getPerson((String) ZaiziAlfrescoServiceUtil
                        .getNodeService().getProperty(ratingRef, RatingsModel.PROP_RATER)));
        rating = (Integer) ZaiziAlfrescoServiceUtil.getNodeService().getProperty(ratingRef,
                RatingsModel.PROP_RATING);
        resultlist.add(new GenericPreference(userId, itemID, Integer.valueOf(rating).floatValue()));
    }

    if (logger.isTraceEnabled()) {
        logger.trace("Returning :" + resultlist);
    }

    return new GenericItemPreferenceArray(resultlist);
}

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