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Test Case taDOM3+/9-taDOM3+-26-CO

taDOM3+ Lock Requests of executed Operation getLastChild(contextElementNode) returns null value

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

Behavior specified with base operations:

  • readCO
  • useCOLCE
  • useCOFCE
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 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:NRCX,PSE:-,NSE:-,FCE:EX,LCE:EX] on CO

Operations must be incompatible

CheckExisting LockRequest[node=CO,lock:NR,PSE:-,NSE:-,FCE:ER,LCE:ER]
with
Requested LockRequest[node=CO,lock:NRCX,PSE:-,NSE:-,FCE:EX,LCE:EX] on CO
On CO the first child edge lock ER is incompatible to the requested EX
Incompatible
Test Case Ok