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  Test Case taDOM3/7-taDOM3-25-CO
taDOM3 Lock Requests of executed Operation getFirstChild(contextElementNode) returns null valueThe getFirstChild operation returns null because the context node CO does not have any child nodes.
Behavior specified with base operations:Read Set = CO COFCE COLCE , Write Set = - LockRequest[node=CO,lock:NR,PSE:-,NSE:-,FCE:ER,LCE:ER]
taDOM3 Lock Requests of checked Operation prependChild(contextElementNode, childType, childValue) executed on node COThe prependChild operation is executed on the context element node CO and prepends a new child to the (at least one) already existing child nodes. The CX lock on the context node is caused by the SX lock on the new child. The new prepended child node (the new first child) is returned.
Bahavior specified with base operations:- readCO
- modifyCOFCE
- modifyFCPSE
Read and write sets for execution on CO:Read Set = CO , Write Set = COFCE FCPSE - LockRequest[node=CO,lock:NRCX,PSE:-,NSE:-,FCE:EX,LCE:-] on CO
- LockRequest[node=FC,lock:-,PSE:EX,NSE:-,FCE:-,LCE:-] on CO
Operations must be incompatible| Check | Existing LockRequest[node=CO,lock:NR,PSE:-,NSE:-,FCE:ER,LCE:ER]
with
Requested LockRequest[node=CO,lock:NRCX,PSE:-,NSE:-,FCE:EX,LCE:-] on CO | On CO the first child edge lock ER is incompatible to the requested EX
| Incompatible | | Check | Existing LockRequest[node=CO,lock:NR,PSE:-,NSE:-,FCE:ER,LCE:ER]
with
Requested LockRequest[node=FC,lock:-,PSE:EX,NSE:-,FCE:-,LCE:-] on CO | | Compatible | | Test Case Ok |
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