C213: Change “lock Record” to do “check and lock” in the same operation

[infotel4iarc]

When executed in sequence, the operations “is Record locked?” and “lock Record” should be done in one single synchronized method (it would become “atomic”). Currently, 2 users could obtain the lock on the same record if they both start the action at the exact same time, because isRecordLocked can return true for both. This error would be random and would be difficult to reproduce.

[fbinfotel]

The branch is https://github.com/infotel4iarc/CanReg5/tree/feature/C213

Here are the point that were done :

• changing the method lockRecord to checkAndLockRecord not to be able to lock a record at the same time