org.apache.commons.collections4.Bag Java Examples

@Test
public void givenBag_whenBagAddAPILikeCollectionAPI_thenFalse() {
    Collection<Integer> collection = new ArrayList<>();

    // Collection contract defines that add() should return true
    assertThat(collection.add(9), is(true));

    // Even when element is already in the collection
    collection.add(1);
    assertThat(collection.add(1), is(true));

    Bag<Integer> bag = new HashBag<>();

    // Bag returns true on adding a new element
    assertThat(bag.add(9), is(true));

    bag.add(1);
    // But breaks the contract with false when it has to increment the count
    assertThat(bag.add(1), is(not(true)));
}
 

public static void main(String[] args) {
    // Разберем текст на слова
    String INPUT_TEXT = "Hello World! Hello All! Hi World!";
    // Создаем Multiset
    Bag bag = new HashBag(Arrays.asList(INPUT_TEXT.split(" ")));

    // Выводим кол-вом вхождений слов
    System.out.println(bag); // напечатает [1:Hi,2:Hello,2:World!,1:All!] - в произвольном порядке
    // Выводим все уникальные слова
    System.out.println(bag.uniqueSet());    // напечатает [Hi, Hello, World!, All!] - в произвольном порядке

    // Выводим количество по каждому слову
    System.out.println("Hello = " + bag.getCount("Hello"));    // напечатает 2
    System.out.println("World = " + bag.getCount("World!"));    // напечатает 2
    System.out.println("All = " + bag.getCount("All!"));    // напечатает 1
    System.out.println("Hi = " + bag.getCount("Hi"));    // напечатает 1
    System.out.println("Empty = " + bag.getCount("Empty"));    // напечатает 0

    // Выводим общее количества всех слов в тексте
    System.out.println(bag.size());    //напечатает 6

    // Выводим общее количество всех уникальных слов
    System.out.println(bag.uniqueSet().size());    //напечатает 4
}
 

public static void main(String[] args) {
    // Разберем текст на слова
    String INPUT_TEXT = "Hello World! Hello All! Hi World!";
    // Создаем Multiset
    Bag bag = new TreeBag(Arrays.asList(INPUT_TEXT.split(" ")));

    // Выводим кол-вом вхождений слов
    System.out.println(bag); // напечатает [1:All!,2:Hello,1:Hi,2:World!]- в алфавитном порядке
    // Выводим все уникальные слова
    System.out.println(bag.uniqueSet());    // напечатает [All!, Hello, Hi, World!]- в алфавитном порядке

    // Выводим количество по каждому слову
    System.out.println("Hello = " + bag.getCount("Hello"));    // напечатает 2
    System.out.println("World = " + bag.getCount("World!"));    // напечатает 2
    System.out.println("All = " + bag.getCount("All!"));    // напечатает 1
    System.out.println("Hi = " + bag.getCount("Hi"));    // напечатает 1
    System.out.println("Empty = " + bag.getCount("Empty"));    // напечатает 0

    // Выводим общее количества всех слов в тексте
    System.out.println(bag.size());    //напечатает 6

    // Выводим общее количество всех уникальных слов
    System.out.println(bag.uniqueSet().size());    //напечатает 4
}
 

public static void main(String[] args) {
    // Разберем текст на слова
    String INPUT_TEXT = "Hello World! Hello All! Hi World!";
    // Создаем Multiset
    Bag bag = SynchronizedBag.synchronizedBag(new HashBag(Arrays.asList(INPUT_TEXT.split(" "))));

    // Выводим кол-вом вхождений слов
    System.out.println(bag); // напечатает [1:Hi,2:Hello,2:World!,1:All!] - в произвольном порядке
    // Выводим все уникальные слова
    System.out.println(bag.uniqueSet());    // напечатает [Hi, Hello, World!, All!] - в произвольном порядке

    // Выводим количество по каждому слову
    System.out.println("Hello = " + bag.getCount("Hello"));    // напечатает 2
    System.out.println("World = " + bag.getCount("World!"));    // напечатает 2
    System.out.println("All = " + bag.getCount("All!"));    // напечатает 1
    System.out.println("Hi = " + bag.getCount("Hi"));    // напечатает 1
    System.out.println("Empty = " + bag.getCount("Empty"));    // напечатает 0

    // Выводим общее количества всех слов в тексте
    System.out.println(bag.size());    //напечатает 6

    // Выводим общее количество всех уникальных слов
    System.out.println(bag.uniqueSet().size());    //напечатает 4
}
 

public static void main(String[] args) {
    // Разберем текст на слова
    String INPUT_TEXT = "Hello World! Hello All! Hi World!";
    // Создаем Multiset
    Bag bag = SynchronizedSortedBag.synchronizedBag(new TreeBag(Arrays.asList(INPUT_TEXT.split(" "))));

    // Выводим кол-вом вхождений слов
    System.out.println(bag); // напечатает [1:All!,2:Hello,1:Hi,2:World!]- в алфавитном порядке
    // Выводим все уникальные слова
    System.out.println(bag.uniqueSet());    // напечатает [All!, Hello, Hi, World!]- в алфавитном порядке


    // Выводим количество по каждому слову
    System.out.println("Hello = " + bag.getCount("Hello"));    // напечатает 2
    System.out.println("World = " + bag.getCount("World!"));    // напечатает 2
    System.out.println("All = " + bag.getCount("All!"));    // напечатает 1
    System.out.println("Hi = " + bag.getCount("Hi"));    // напечатает 1
    System.out.println("Empty = " + bag.getCount("Empty"));    // напечатает 0

    // Выводим общее количества всех слов в тексте
    System.out.println(bag.size());    //напечатает 6

    // Выводим общее количество всех уникальных слов
    System.out.println(bag.uniqueSet().size());    //напечатает 4
}
 

public static void main(String[] args) {
    // Parse text to separate words
    String INPUT_TEXT = "Hello World! Hello All! Hi World!";
    // Create Multiset
    Bag bag = new HashBag(Arrays.asList(INPUT_TEXT.split(" ")));

    // Print count words
    System.out.println(bag); // print [1:Hi,2:Hello,2:World!,1:All!] - in random orders
    // Print all unique words
    System.out.println(bag.uniqueSet());    // print [Hi, Hello, World!, All!] - in random orders

    // Print count occurrences of words
    System.out.println("Hello = " + bag.getCount("Hello"));    // print 2
    System.out.println("World = " + bag.getCount("World!"));    // print 2
    System.out.println("All = " + bag.getCount("All!"));    // print 1
    System.out.println("Hi = " + bag.getCount("Hi"));    // print 1
    System.out.println("Empty = " + bag.getCount("Empty"));    // print 0

    // Print count all words
    System.out.println(bag.size());    //print 6

    // Print count unique words
    System.out.println(bag.uniqueSet().size());    //print 4
}
 

public static void main(String[] args) {
    // Parse text to separate words
    String INPUT_TEXT = "Hello World! Hello All! Hi World!";
    // Create Multiset
    Bag bag = new TreeBag(Arrays.asList(INPUT_TEXT.split(" ")));

    // Print count words
    System.out.println(bag); // print [1:All!,2:Hello,1:Hi,2:World!]- in natural (alphabet) order
    // Print all unique words
    System.out.println(bag.uniqueSet());    // print [All!, Hello, Hi, World!]- in natural (alphabet) order

    // Print count occurrences of words
    System.out.println("Hello = " + bag.getCount("Hello"));    // print 2
    System.out.println("World = " + bag.getCount("World!"));    // print 2
    System.out.println("All = " + bag.getCount("All!"));    // print 1
    System.out.println("Hi = " + bag.getCount("Hi"));    // print 1
    System.out.println("Empty = " + bag.getCount("Empty"));    // print 0

    // Print count all words
    System.out.println(bag.size());    //print 6

    // Print count unique words
    System.out.println(bag.uniqueSet().size());    //print 4
}
 

public static void main(String[] args) {
    // Parse text to separate words
    String INPUT_TEXT = "Hello World! Hello All! Hi World!";
    // Create Multiset
    Bag bag = SynchronizedBag.synchronizedBag(new HashBag(Arrays.asList(INPUT_TEXT.split(" "))));

    // Print count words
    System.out.println(bag); // print [1:Hi,2:Hello,2:World!,1:All!] - in random orders
    // Print all unique words
    System.out.println(bag.uniqueSet());    // print [Hi, Hello, World!, All!] - in random orders

    // Print count occurrences of words
    System.out.println("Hello = " + bag.getCount("Hello"));    // print 2
    System.out.println("World = " + bag.getCount("World!"));    // print 2
    System.out.println("All = " + bag.getCount("All!"));    // print 1
    System.out.println("Hi = " + bag.getCount("Hi"));    // print 1
    System.out.println("Empty = " + bag.getCount("Empty"));    // print 0

    // Print count all words
    System.out.println(bag.size());    //print 6

    // Print count unique words
    System.out.println(bag.uniqueSet().size());    //print 4
}
 

public static void main(String[] args) {
    // Parse text to separate words
    String INPUT_TEXT = "Hello World! Hello All! Hi World!";
    // Create Multiset
    Bag bag = SynchronizedSortedBag.synchronizedBag(new TreeBag(Arrays.asList(INPUT_TEXT.split(" "))));

    // Print count words
    System.out.println(bag); // print [1:All!,2:Hello,1:Hi,2:World!]- in natural (alphabet) order
    // Print all unique words
    System.out.println(bag.uniqueSet());    // print [All!, Hello, Hi, World!]- in natural (alphabet) order


    // Print count occurrences of words
    System.out.println("Hello = " + bag.getCount("Hello"));    // print 2
    System.out.println("World = " + bag.getCount("World!"));    // print 2
    System.out.println("All = " + bag.getCount("All!"));    // print 1
    System.out.println("Hi = " + bag.getCount("Hi"));    // print 1
    System.out.println("Empty = " + bag.getCount("Empty"));    // print 0

    // Print count all words
    System.out.println(bag.size());    //print 6

    // Print count unique words
    System.out.println(bag.uniqueSet().size());    //print 4
}
 

@Test
public void givenMultipleCopies_whenRemove_allAreRemoved() {
    Bag<Integer> bag = new HashBag<>(Arrays.asList(new Integer[] { 1, 2, 3, 3, 3, 1, 4 }));

    // From 3 we delete 1, 2 remain
    bag.remove(3, 1);
    assertThat(bag.getCount(3), equalTo(2));

    // From 2 we delete all
    bag.remove(1);
    assertThat(bag.getCount(1), equalTo(0));
}
 

@Test
public void givenAdd_whenCountOfElementsDefined_thenCountAreAdded() {
    Bag<Integer> bag = new HashBag<>();

    // Adding 1 for 5 times
    bag.add(1, 5);
    assertThat(bag.getCount(1), equalTo(5));
}
 

@Test
public void givenDecoratedBag_whenBagAddAPILikeCollectionAPI_thenTrue() {
    Bag<Integer> bag = CollectionBag.collectionBag(new HashBag<>());

    bag.add(1);
    // This time the behavior is compliant to the Java Collection
    assertThat(bag.add(1), is((true)));
}
 

@Nonnull
@Override
public Bag<Emote> getEmotesBag()
{
    unsupported();
    return null;
}
 

@Nonnull
@Override
public Bag<Role> getMentionedRolesBag()
{
    unsupported();
    return null;
}
 

@Nonnull
@Override
public Bag<TextChannel> getMentionedChannelsBag()
{
    unsupported();
    return null;
}
 

@Nonnull
@Override
public Bag<User> getMentionedUsersBag()
{
    unsupported();
    return null;
}
 

@Nonnull
@Override
public Bag<Emote> getEmotesBag()
{
    return processMentions(MentionType.EMOTE, new HashBag<>(), false, this::matchEmote);
}
 

@Nonnull
@Override
public Bag<Role> getMentionedRolesBag()
{
    return processMentions(MentionType.ROLE, new HashBag<>(), false, this::matchRole);
}
 

@Nonnull
@Override
public Bag<TextChannel> getMentionedChannelsBag()
{
    return processMentions(MentionType.CHANNEL, new HashBag<>(), false, this::matchTextChannel);
}
 

@Nonnull
@Override
public Bag<User> getMentionedUsersBag()
{
    return processMentions(MentionType.USER, new HashBag<>(), false, this::matchUser);
}
 

@Test
public void givenMultipleCopies_whenAdded_theCountIsKept() {
    Bag<Integer> bag = new HashBag<>(Arrays.asList(new Integer[] { 1, 2, 3, 3, 3, 1, 4 }));

    assertThat(bag.getCount(1), equalTo(2));
}
 

/**
 * A {@link org.apache.commons.collections4.Bag Bag} of emotes used in this message.
 * <br>This can be used to retrieve the amount of times an emote was used in this message.
 *
 * <h2>Example</h2>
 * <pre>{@code
 * public void sendCount(Message msg)
 * {
 *     List<Emote> emotes = msg.getEmotes(); // distinct list, in order of appearance
 *     Bag<Emote> count = msg.getEmotesBag();
 *     StringBuilder content = new StringBuilder();
 *     for (Emote emote : emotes)
 *     {
 *         content.append(emote.getName())
 *                .append(": ")
 *                .append(count.getCount(role))
 *                .append("\n");
 *     }
 *     msg.getChannel().sendMessage(content.toString()).queue();
 * }
 * }</pre>
 *
 * @return {@link org.apache.commons.collections4.Bag Bag} of used emotes
 *
 * @see    #getEmotes()
 */
@Nonnull
Bag<Emote> getEmotesBag();
 

/**
 * A {@link org.apache.commons.collections4.Bag Bag} of mentioned roles.
 * <br>This can be used to retrieve the amount of times a role was mentioned in this message. This only
 * counts direct mentions of the role and not mentions through the everyone tag.
 * If a role is not {@link net.dv8tion.jda.api.entities.Role#isMentionable() mentionable} it will not be included.
 *
 * <h2>Example</h2>
 * <pre>{@code
 * public void sendCount(Message msg)
 * {
 *     List<Role> mentions = msg.getMentionedRoles(); // distinct list, in order of appearance
 *     Bag<Role> count = msg.getMentionedRolesBag();
 *     StringBuilder content = new StringBuilder();
 *     for (Role role : mentions)
 *     {
 *         content.append(role.getName())
 *                .append(": ")
 *                .append(count.getCount(role))
 *                .append("\n");
 *     }
 *     msg.getChannel().sendMessage(content.toString()).queue();
 * }
 * }</pre>
 *
 * @return {@link org.apache.commons.collections4.Bag Bag} of mentioned roles
 *
 * @see    #getMentionedRoles()
 */
@Nonnull
Bag<Role> getMentionedRolesBag();
 

/**
 * A {@link org.apache.commons.collections4.Bag Bag} of mentioned channels.
 * <br>This can be used to retrieve the amount of times a channel was mentioned in this message.
 *
 * <h2>Example</h2>
 * <pre>{@code
 * public void sendCount(Message msg)
 * {
 *     List<TextChannel> mentions = msg.getMentionedTextChannels(); // distinct list, in order of appearance
 *     Bag<TextChannel> count = msg.getMentionedTextChannelsBag();
 *     StringBuilder content = new StringBuilder();
 *     for (TextChannel channel : mentions)
 *     {
 *         content.append("#")
 *                .append(channel.getName())
 *                .append(": ")
 *                .append(count.getCount(channel))
 *                .append("\n");
 *     }
 *     msg.getChannel().sendMessage(content.toString()).queue();
 * }
 * }</pre>
 *
 * @return {@link org.apache.commons.collections4.Bag Bag} of mentioned channels
 *
 * @see    #getMentionedChannels()
 */
@Nonnull
Bag<TextChannel> getMentionedChannelsBag();
 

/**
 * A {@link org.apache.commons.collections4.Bag Bag} of mentioned users.
 * <br>This can be used to retrieve the amount of times a user was mentioned in this message. This only
 * counts direct mentions of the user and not mentions through roles or the everyone tag.
 *
 * <h2>Example</h2>
 * <pre>{@code
 * public void sendCount(Message msg)
 * {
 *     List<User> mentions = msg.getMentionedUsers(); // distinct list, in order of appearance
 *     Bag<User> count = msg.getMentionedUsersBag();
 *     StringBuilder content = new StringBuilder();
 *     for (User user : mentions)
 *     {
 *         content.append(user.getAsTag())
 *                .append(": ")
 *                .append(count.getCount(user))
 *                .append("\n");
 *     }
 *     msg.getChannel().sendMessage(content.toString()).queue();
 * }
 * }</pre>
 *
 * @return {@link org.apache.commons.collections4.Bag Bag} of mentioned users
 *
 * @see    #getMentionedUsers()
 */
@Nonnull
Bag<User> getMentionedUsersBag();