Example usage for org.springframework.data.domain Slice hasContent

Introduction

In this page you can find the example usage for org.springframework.data.domain Slice hasContent.

Prototype

boolean hasContent();

Source Link

Document

Returns whether the Slice has content at all.

Usage

From source file:com.netflix.genie.core.jpa.services.JpaJobPersistenceServiceImpl.java

/**
 * {@inheritDoc}/*from   w  w w .ja v  a 2  s.  co  m*/
 */
@Override
public long deleteBatchOfJobsCreatedBeforeDate(@NotNull final Date date, @Min(1) final int maxDeleted,
        @Min(1) final int pageSize) {
    log.info("Attempting to delete batch of jobs (at most {}) created before {} ms from epoch", maxDeleted,
            date.getTime());
    long jobExecutionsDeleted = 0;
    long jobMetadatasDeleted = 0;
    long jobsDeleted = 0;
    long jobRequestsDeleted = 0;
    long totalAttemptedDeletions = 0;
    final Pageable page = new PageRequest(0, pageSize);
    Slice<IdProjection> idProjections;
    do {
        idProjections = this.jobRequestRepo.findByCreatedBefore(date, page);
        if (idProjections.hasContent()) {
            final List<String> ids = idProjections.getContent().stream().map(IdProjection::getId)
                    .collect(Collectors.toList());

            final long toBeDeleted = ids.size();
            totalAttemptedDeletions += toBeDeleted;
            // Due to optimizations for queries these entity mappings aren't reversed so cascade delete
            // isn't available and runtime exception thrown if you try to delete from the top.

            log.debug("Attempting to delete {} rows from job_executions...", toBeDeleted);
            final long deletedExecutions = this.jobExecutionRepo.deleteByIdIn(ids);
            log.debug("Successfully deleted {} rows from job_executions...", deletedExecutions);
            if (deletedExecutions != toBeDeleted) {
                log.error("Deleted {} job execution records but expected to delete {}", deletedExecutions,
                        toBeDeleted);
            }
            jobExecutionsDeleted += deletedExecutions;

            log.debug("Attempting to delete {} rows from job_metadata...", toBeDeleted);
            final long deletedMetadata = this.jobMetadataRepository.deleteByIdIn(ids);
            log.debug("Successfully deleted {} rows from job_metadata...", deletedMetadata);
            if (deletedMetadata != toBeDeleted) {
                log.error("Deleted {} job metadata records but expected to delete {}", deletedMetadata,
                        toBeDeleted);
            }
            jobMetadatasDeleted += deletedMetadata;

            log.debug("Attempting to delete {} rows from jobs...", toBeDeleted);
            final long deletedJobs = this.jobRepo.deleteByIdIn(ids);
            log.debug("Successfully deleted {} rows from jobs...", deletedJobs);
            if (deletedMetadata != toBeDeleted) {
                log.error("Deleted {} job records but expected to delete {}", deletedJobs, toBeDeleted);
            }
            jobsDeleted += deletedJobs;

            log.debug("Attempting to delete {} rows from job_requests...", toBeDeleted);
            final long deletedJobRequests = this.jobRequestRepo.deleteByIdIn(ids);
            log.debug("Successfully deleted {} rows from job_requests...", deletedJobRequests);
            if (deletedJobRequests != toBeDeleted) {
                log.error("Deleted {} job request records but expected to delete {}", deletedJobRequests,
                        toBeDeleted);
            }
            jobRequestsDeleted += deletedJobRequests;
        }
    } while (idProjections.hasNext() && totalAttemptedDeletions < maxDeleted);

    log.info("Deleted a chunk of {} job records: {} execution, {} metadata, {} job and {} job request records",
            totalAttemptedDeletions, jobExecutionsDeleted, jobMetadatasDeleted, jobsDeleted,
            jobRequestsDeleted);
    return totalAttemptedDeletions;
}

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From source file:com.netflix.genie.web.jpa.services.JpaJobPersistenceServiceImpl.java

/**
 * {@inheritDoc}//  w  w w.j  a v  a2s  .  c  o m
 */
@Override
public long deleteBatchOfJobsCreatedBeforeDate(@NotNull final Instant date, @Min(1) final int maxDeleted,
        @Min(1) final int pageSize) {
    log.info("Attempting to delete batch of jobs (at most {}) created before {} ms from epoch", maxDeleted,
            date.toEpochMilli());
    long jobsDeleted = 0;
    long totalAttemptedDeletions = 0;
    final Pageable page = PageRequest.of(0, pageSize);
    Slice<IdProjection> idProjections;
    do {
        idProjections = this.jobRepository.findByCreatedBefore(date, page);
        if (idProjections.hasContent()) {
            final List<Long> ids = idProjections.getContent().stream().map(IdProjection::getId)
                    .collect(Collectors.toList());

            final long toBeDeleted = ids.size();
            totalAttemptedDeletions += toBeDeleted;

            log.debug("Attempting to delete {} rows from jobs...", toBeDeleted);
            final long deletedJobs = this.jobRepository.deleteByIdIn(ids);
            log.debug("Successfully deleted {} rows from jobs...", deletedJobs);
            if (deletedJobs != toBeDeleted) {
                log.error("Deleted {} job records but expected to delete {}", deletedJobs, toBeDeleted);
            }
            jobsDeleted += deletedJobs;
        }
    } while (idProjections.hasNext() && totalAttemptedDeletions < maxDeleted);

    log.info("Deleted a chunk of {} job records: {} job", totalAttemptedDeletions, jobsDeleted);
    return totalAttemptedDeletions;
}

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