Example usage for java.util Collection add

Introduction

In this page you can find the example usage for java.util Collection add.

Prototype

boolean add(E e);

Source Link

Document

Ensures that this collection contains the specified element (optional operation).

Usage

From source file:com.cloudera.oryx.ml.serving.als.model.LoadTestALSModelFactory.java

public static ALSServingModel buildTestModel() {

    log.info("Building load test model...");

    System.gc();//ww  w. j a v a 2s. c om
    long startMemory = JVMUtils.getUsedMemory();

    RandomGenerator random = RandomManager.getRandom();
    PoissonDistribution itemPerUserDist = new PoissonDistribution(random, AVG_ITEMS_PER_USER,
            PoissonDistribution.DEFAULT_EPSILON, PoissonDistribution.DEFAULT_MAX_ITERATIONS);
    ALSServingModel model = new ALSServingModel(FEATURES, true);

    long totalEntries = 0;
    for (int user = 0; user < USERS; user++) {
        String userID = "U" + user;
        model.setUserVector(userID, randomVector(random));
        int itemsPerUser = itemPerUserDist.sample();
        totalEntries += itemsPerUser;
        Collection<String> knownIDs = new ArrayList<>(itemsPerUser);
        for (int i = 0; i < itemsPerUser; i++) {
            knownIDs.add("I" + random.nextInt(ITEMS));
        }
        model.addKnownItems(userID, knownIDs);
    }

    for (int item = 0; item < ITEMS; item++) {
        model.setItemVector("I" + item, randomVector(random));
    }

    System.gc();
    long endMemory = JVMUtils.getUsedMemory();

    log.info("Built model over {} users, {} items, {} features, {} entries, using {}MB", USERS, ITEMS, FEATURES,
            totalEntries, (endMemory - startMemory) / 1_000_000);
    return model;
}

From source file:com.google.mr4c.content.ContentTypes.java

public static Collection<String> appendSuffixes(String name, String contentType) {
    Collection<String> result = new ArrayList<String>();
    for (String suffix : getSuffixes(contentType)) {
        result.add(name + "." + suffix);
    }/*from  w ww.  ja  v a2 s. c om*/
    return result;
}

From source file:Main.java

/**
 * Adds all elements in the enumeration to the given collection.
 * //from   w  ww.j a  v a  2 s.  co  m
 * @param collection
 *            the collection to add to
 * @param enumeration
 *            the enumeration of elements to add, may not be null
 * @throws NullPointerException
 *             if the collection or enumeration is null
 */
public static void addAll(Collection collection, Enumeration enumeration) {
    while (enumeration.hasMoreElements()) {
        collection.add(enumeration.nextElement());
    }
}

From source file:com.swtxml.util.lang.CollectionUtils.java

/**
 * Returns a new collection containing all elements from collection for
 * which filter.match(element) returned true.
 *//*from   w  w w  . j a v a  2  s  .  com*/
@SuppressWarnings("unchecked")
public static <A> Collection<A> select(Collection<? extends A> collection, IFilter<A> filter) {
    Collection<A> resultList = createCollection(collection);
    for (A a : collection) {
        if (filter.match(a)) {
            resultList.add(a);
        }
    }
    return resultList;
}

From source file:Main.java

private static void flatten(Collection<?> fromTreeList, Collection<Object> toFlatList) {
    for (Object item : fromTreeList) {
        if (item instanceof Collection<?>) {
            flatten((Collection<?>) item, toFlatList);
        } else {//from   www . j  a  v a  2 s. c o m
            toFlatList.add(item);
        }
    }
}

From source file:Main.java

/**
 * Subtract objects in collection b from collection a. The string value
 * of the object is used for comparisons.
 * /* w w  w .  java2s .c  om*/
 * @param a a collection that will have members removed
 * @param b a collection whose objects will be removed from a
 * @return a new collection that contains the remaining objects in a
 */
public static Collection subtractByString(Collection a, Collection b) {
    Collection retColl = new ArrayList();
    Object obj = null;
    Iterator it = a.iterator();
    while (it.hasNext()) {
        obj = it.next();
        if (!b.contains(obj)) {
            retColl.add(obj);
        }
    }
    return retColl;
}

From source file:com.egt.ejb.toolkit.ColUtils.java

public static <T> Collection<T> filter(Collection<T> collection, Predicado<T> predicate) {
    Collection<T> arrayList = new ArrayList<T>();
    for (T element : collection) {
        if (predicate.evaluate(element)) {
            arrayList.add(element);
        }//from w  w  w.  j a  v  a  2s.  c  o  m
    }
    return arrayList;
}

From source file:Main.java

@SafeVarargs
public static <T> boolean addAll(Collection<T> collection, T... toAdd) {
    int size = toAdd.length;
    boolean result = false;
    if (size > 0) {
        for (T element : toAdd)
            result |= collection.add(element);
    }//from  w  w w  .  java2s .  c  o m
    return result;
}

From source file:org.netxilia.api.impl.format.SheetValueListFormatter.java

public static StyleDefinition buildDefinition(Style id, StyleGroup group, String name, String description,
        WorkbookId workbook, AreaReference nameReference, AreaReference valueReference) {
    Collection<StyleAttribute> atts = new ArrayList<StyleAttribute>();
    atts.add(new StyleAttribute(ATT_WORKBOOK, workbook.getKey()));
    atts.add(new StyleAttribute(ATT_NAME_REF, nameReference.toString()));
    atts.add(new StyleAttribute(ATT_VALUE_REF, valueReference.toString()));
    atts.add(new StyleAttribute(StyleAttribute.EDITOR, "select"));
    // XXX: this pattern type should correspond to what is in the spring file
    atts.add(new StyleAttribute(StyleAttribute.PATTERN_TYPE, "values"));

    return new StyleDefinition(id, group, name, description, atts);
}

From source file:org.netxilia.api.impl.format.SheetValueListFormatter.java

public static StyleDefinition buildDefinition(Style id, StyleGroup group, String name, String description,
        WorkbookId workbook, AbsoluteAlias nameReference, AbsoluteAlias valueReference) {
    Collection<StyleAttribute> atts = new ArrayList<StyleAttribute>();
    atts.add(new StyleAttribute(ATT_WORKBOOK, workbook.getKey()));
    atts.add(new StyleAttribute(ATT_NAME_REF, nameReference.toString()));
    atts.add(new StyleAttribute(ATT_VALUE_REF, valueReference.toString()));
    atts.add(new StyleAttribute(StyleAttribute.EDITOR, "select"));
    // XXX: this pattern type should correspond to what is in the spring file
    atts.add(new StyleAttribute(StyleAttribute.PATTERN_TYPE, "values"));

    return new StyleDefinition(id, group, name, description, atts);
}