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Test Case taDOM2/7-taDOM2-26-CO

taDOM2 Lock Requests of executed Operation getFirstChild(contextElementNode) returns null value

The getFirstChild operation returns null because the context node CO does not have any child nodes.

Behavior specified with base operations:

readCO
useCOFCE
useCOLCE

Read Set = CO COFCE COLCE , Write Set =

LockRequest[node=CO,lock:NR,PSE:-,NSE:-,FCE:ER,LCE:ER]
LockRequest[node=CN,lock:NR,PSE:-,NSE:-,FCE:-,LCE:-]

taDOM2 Lock Requests of checked Operation prependChild(contextElementNode, childType, childValue) executed on node CO

The prependChild operation is executed on the context element node CO and prepends a new child. The context element node CO has still no child nodes before this operation. The CX resp. NRCX lock on the context node is caused by the SX lock on the new child. The new prepended child node (the now only child) is returned.

Bahavior specified with base operations:

readCO
modifyCOFCE
modifyCOLCE

Read and write sets for execution on CO:

Read Set = CO , Write Set = COFCE COLCE

LockRequest[node=CO,lock:CX,PSE:-,NSE:-,FCE:EX,LCE:EX] on CO
LockRequest[node=CN,lock:NR,PSE:-,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:CX,PSE:-,NSE:-,FCE:EX,LCE:EX] 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=CN,lock:NR,PSE:-,NSE:-,FCE:-,LCE:-] on CO	Requested lock IR on AC compatible to existing lock IR. Requested lock IR on PA compatible to existing lock IR. Requested lock IR on CO compatible to existing lock NR.	Compatible
Check	Existing LockRequest[node=CN,lock:NR,PSE:-,NSE:-,FCE:-,LCE:-] with Requested LockRequest[node=CO,lock:CX,PSE:-,NSE:-,FCE:EX,LCE:EX] on CO	Requested lock IX on AC compatible to existing lock IR. Requested lock IX on PA compatible to existing lock IR. Requested lock CX on CO compatible to existing lock IR.	Compatible
Check	Existing LockRequest[node=CN,lock:NR,PSE:-,NSE:-,FCE:-,LCE:-] with Requested LockRequest[node=CN,lock:NR,PSE:-,NSE:-,FCE:-,LCE:-] on CO	Requested lock IR on AC compatible to existing lock IR. Requested lock IR on PA compatible to existing lock IR. Requested lock IR on CO compatible to existing lock IR. Requested lock NR on CN compatible to existing lock NR.	Compatible
Test Case Ok