Example usage for java.util.concurrent CompletableFuture completedFuture

Introduction

In this page you can find the example usage for java.util.concurrent CompletableFuture completedFuture.

Prototype

public static <U> CompletableFuture<U> completedFuture(U value)

Source Link

Document

Returns a new CompletableFuture that is already completed with the given value.

Usage

From source file:org.apache.james.mailbox.cassandra.mail.CassandraMailboxMapper.java

private CompletableFuture<Boolean> trySave(SimpleMailbox cassandraMailbox, CassandraId cassandraId) {
    return mailboxPathDAO.save(cassandraMailbox.generateAssociatedPath(), cassandraId).thenCompose(result -> {
        if (result) {
            return mailboxDAO
                    .retrieveMailbox(/*w  w w.  j av a2  s  . com*/
                            cassandraId)
                    .thenCompose(optional -> CompletableFuture.allOf(optional
                            .map(storedMailbox -> mailboxPathDAO.delete(storedMailbox.generateAssociatedPath()))
                            .orElse(CompletableFuture.completedFuture(null)), mailboxDAO.save(cassandraMailbox))
                            .thenApply(any -> result));
        }
        return CompletableFuture.completedFuture(result);
    });
}

From source file:org.apache.james.mailbox.cassandra.mail.CassandraMessageIdMapper.java

private Function<Pair<CassandraMessageDAO.MessageWithoutAttachment, Stream<CassandraMessageDAO.MessageAttachmentRepresentation>>, CompletableFuture<Pair<CassandraMessageDAO.MessageWithoutAttachment, Stream<MessageAttachment>>>> loadAttachments(
        FetchType fetchType) {//  w  ww  .j ava 2s  .  com
    if (fetchType == FetchType.Full || fetchType == FetchType.Body) {
        return pair -> attachmentLoader.getAttachments(pair.getRight().collect(Guavate.toImmutableList()))
                .thenApply(attachments -> Pair.of(pair.getLeft(), attachments.stream()));
    } else {
        return pair -> CompletableFuture.completedFuture(Pair.of(pair.getLeft(), Stream.of()));
    }
}

From source file:org.apache.james.mailbox.cassandra.mail.CassandraMessageIdMapper.java

@Override
public void delete(MessageId messageId, List<MailboxId> mailboxIds) {
    CassandraMessageId cassandraMessageId = (CassandraMessageId) messageId;
    mailboxIds.stream()//from  www.j a v a  2s  .c  o m
            .map(mailboxId -> retrieveAndDeleteIndices(cassandraMessageId,
                    Optional.of((CassandraId) mailboxId)))
            .reduce((f1, f2) -> CompletableFuture.allOf(f1, f2)).orElse(CompletableFuture.completedFuture(null))
            .join();
}

From source file:org.apache.james.mailbox.cassandra.mail.CassandraMessageIdMapper.java

private CompletableFuture<Void> retrieveAndDeleteIndices(CassandraMessageId messageId,
        Optional<CassandraId> mailboxId) {
    return imapUidDAO.retrieve(messageId, mailboxId)
            .thenCompose(composedMessageIds -> composedMessageIds.map(this::deleteIds)
                    .reduce((f1, f2) -> CompletableFuture.allOf(f1, f2))
                    .orElse(CompletableFuture.completedFuture(null)));
}

From source file:org.apache.james.mailbox.cassandra.mail.CassandraMessageIdMapper.java

private Optional<Pair<Flags, ComposedMessageIdWithMetaData>> updateFlags(
        ComposedMessageIdWithMetaData oldComposedId, ComposedMessageIdWithMetaData newComposedId) {
    return imapUidDAO.updateMetadata(newComposedId, oldComposedId.getModSeq())
            .thenCompose(updateSuccess -> Optional.of(updateSuccess).filter(b -> b).map(
                    (Boolean any) -> messageIdDAO.updateMetadata(newComposedId).thenApply(v -> updateSuccess))
                    .orElse(CompletableFuture.completedFuture(updateSuccess)))
            .thenApply(success -> Optional.of(success).filter(b -> b)
                    .map(any -> Pair.of(oldComposedId.getFlags(), newComposedId)))
            .join();//w  ww. ja  va  2  s .  c  o  m
}

From source file:org.apache.james.mailbox.cassandra.mail.CassandraMessageMapper.java

private CompletableFuture<Void> deleteAsFuture(MailboxMessage message, CassandraId mailboxId) {
    return messageIdDAO.retrieve(mailboxId, message.getUid()).thenCompose(optional -> optional
            .map(this::deleteUsingMailboxId).orElse(CompletableFuture.completedFuture(null)));
}

From source file:org.apache.james.mailbox.cassandra.mail.CassandraMessageMapper.java

@Override
public MessageMetaData move(Mailbox destinationMailbox, MailboxMessage original) throws MailboxException {
    CassandraId originalMailboxId = (CassandraId) original.getMailboxId();
    MessageMetaData messageMetaData = copy(destinationMailbox, original);
    retrieveMessageId(originalMailboxId, original).thenCompose(optional -> optional
            .map(this::deleteUsingMailboxId).orElse(CompletableFuture.completedFuture(null))).join();
    return messageMetaData;
}

From source file:org.apache.james.mailbox.cassandra.mail.CassandraMessageMapper.java

private boolean updateFlags(MailboxMessage message, long oldModSeq) {
    ComposedMessageIdWithMetaData composedMessageIdWithMetaData = ComposedMessageIdWithMetaData.builder()
            .composedMessageId(//from  w  w  w.j a va2 s .  c om
                    new ComposedMessageId(message.getMailboxId(), message.getMessageId(), message.getUid()))
            .modSeq(message.getModSeq()).flags(message.createFlags()).build();
    return imapUidDAO.updateMetadata(composedMessageIdWithMetaData, oldModSeq)
            .thenCompose(success -> Optional.of(success).filter(b -> b)
                    .map((Boolean any) -> messageIdDAO.updateMetadata(composedMessageIdWithMetaData)
                            .thenApply(v -> success))
                    .orElse(CompletableFuture.completedFuture(success)))
            .join();
}

From source file:org.apache.james.sieve.cassandra.CassandraSieveRepository.java

public CompletableFuture<Void> updateSpaceUsed(String user, long spaceUsed) {
    if (spaceUsed == 0) {
        return CompletableFuture.completedFuture(null);
    }//from  w w w . j  a  v  a  2 s  .  co m
    return cassandraSieveDAO.updateSpaceUsed(user, spaceUsed);
}

From source file:org.apache.james.sieve.cassandra.CassandraSieveRepository.java

private CompletableFuture<Void> unactivateOldScript(String user) {
    return cassandraSieveDAO.getActiveName(user)
            .thenCompose(scriptNameOptional -> scriptNameOptional.map(
                    scriptName -> updateScriptActivation(user, scriptName, false).<Void>thenApply(any -> null))
                    .orElse(CompletableFuture.completedFuture(null)));
}