Need for the data object to be in TES to create links

For the packers/unpackers, it's required to put the data object in TES before one can add links to it. This requirement makes all packers/unpackers to use Read/WriteDataHandles and put packed objects in TES even if they are not persisted later.

To test this: Checkout Moore/sevda-packers2 LHCb/sevda-packers2

In Moore/Hlt/Moore/python/Moore/persistence/packing.py Set enable_check to True for packers

run Moore/Hlt/Hlt2Conf/tests/qmtest/test_persistreco_realtime.qmt

In LHCb/Event/EventPacker/src/component/BufferPackerBaseAlg.h Comment out line 57,60,64,65,66

Compile and rerun the test.

@sponce might know more.

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