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Example 11 with StandardRevisionClaim

use of org.apache.nifi.web.revision.StandardRevisionClaim in project nifi by apache.

the class StandardNiFiServiceFacade method updateSnippet.

@Override
public SnippetEntity updateSnippet(final Set<Revision> revisions, final SnippetDTO snippetDto) {
    final NiFiUser user = NiFiUserUtils.getNiFiUser();
    final RevisionClaim revisionClaim = new StandardRevisionClaim(revisions);
    final RevisionUpdate<SnippetDTO> snapshot;
    try {
        snapshot = revisionManager.updateRevision(revisionClaim, user, new UpdateRevisionTask<SnippetDTO>() {

            @Override
            public RevisionUpdate<SnippetDTO> update() {
                // get the updated component
                final Snippet snippet = snippetDAO.updateSnippetComponents(snippetDto);
                // drop the snippet
                snippetDAO.dropSnippet(snippet.getId());
                // save updated controller
                controllerFacade.save();
                // increment the revisions
                final Set<Revision> updatedRevisions = revisions.stream().map(revision -> {
                    final Revision currentRevision = revisionManager.getRevision(revision.getComponentId());
                    return currentRevision.incrementRevision(revision.getClientId());
                }).collect(Collectors.toSet());
                final SnippetDTO dto = dtoFactory.createSnippetDto(snippet);
                return new StandardRevisionUpdate<>(dto, null, updatedRevisions);
            }
        });
    } catch (final ExpiredRevisionClaimException e) {
        throw new InvalidRevisionException("Failed to update Snippet", e);
    }
    return entityFactory.createSnippetEntity(snapshot.getComponent());
}
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