some cache_safe annotations
some cache_safe annotations


Former-commit-id: d36d366d6d07deae14827f91c10be57c0e364094
HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte