Java Optional.isEmpty Examples

Example #1

File: CommitFactory.java Project: fjalier/javers

  public Commit createTerminalByGlobalId(String author, GlobalId removedId) {
    Validate.argumentsAreNotNull(author, removedId);

    Optional<CdoSnapshot> previousSnapshot = javersRepository.getLatest(removedId);
    if (previousSnapshot.isEmpty()) {
      throw new JaversException(
          JaversExceptionCode.CANT_DELETE_OBJECT_NOT_FOUND, removedId.value());
    }

    CommitMetadata commitMetadata = nextCommit(author);

    CdoSnapshot terminalSnapshot =
        snapshotFactory.createTerminal(removedId, previousSnapshot.get(), commitMetadata);

    Diff diff = diffFactory.singleTerminal(removedId, commitMetadata);

    return new Commit(commitMetadata, Lists.asList(terminalSnapshot), diff);
  }

Example #2

File: CommitMetadataRepository.java Project: ZupIT/javers

  public CommitId getCommitHeadId() {
    Optional<BigDecimal> maxCommitId = selectMaxCommitId();

    return maxCommitId.isEmpty() ? null : CommitId.valueOf(maxCommitId.get());
  }