-=head2 Jobs
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-=over
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-=item B<jobcard>
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-Returns the number of jobs in the database.
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-=item B<job_results> I<$job>
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-Returns an array of job results. Each element corresponds to a test and is a hashref with keys B<id> (test number), B<result> (result code, see L<Gruntmaster::Daemon::Constants>), B<result_text> (result description) and B<time> (time taken).
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-=item B<set_job_results> I<$job>, I<$results>
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-Sets a job's results.
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-=item B<job_inmeta> I<$job>
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-Returns a job's meta.
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-=item B<set_job_inmeta> I<$job>, I<$meta>
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-Sets a job's meta.
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-=item B<job_daemon> I<$job>
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-Returns the hostname:pid of the daemon which ran this job.
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-=item B<set_job_daemon> I<$job>, I<$hostname_and_pid>
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-If the job has no associated daemon, it sets the daemon and returns true. Otherwise it returns false without setting the daemon.
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-=item B<job_date> I<$job>
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-Returns a job's submit date.
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-=item B<set_job_date> I<$job>, I<$date>
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-Sets a job's submit date.
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-=item B<job_errors> I<$job>
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-Returns a job's compile errors.
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-=item B<set_job_errors> I<$job>, I<$errors>
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-Sets a job's compile errors.
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-=item B<job_extension> I<$job>
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-Returns a job's file name extension (e.g. "cpp", "pl", "java").
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-=item B<set_job_extension> I<$job>, I<$extension>
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-Sets a job's file name extension.
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-=item B<job_filesize> I<$job>
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-Returns a job's source file size, in bytes.
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-=item B<set_job_filesize> I<$job>, I<$filesize>