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(C) AG DBIS
  

Use Case 24:

Node Operation appendChild(contextElementNode, childType, childValue)
returns Node

The appendChild operation is executed on the context element node CO and appends 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 appended child node (the now only child) is returned.
  • This operation can be executed on an element context node
  • This operation cannot be executed on an text context node

Scenario 24-1 for taDOM2 Lock Requests:
NodeLockPSENSEFCELCE
COCX--EXEX
CNNR----
Scenario 24-2 for taDOM2+ Lock Requests:
NodeLockPSENSEFCELCE
COCX--EXEX
CNNR----
Scenario 24-3 for taDOM3 Lock Requests:
NodeLockPSENSEFCELCE
CONRCX--EXEX
Scenario 24-4 for taDOM3+ Lock Requests:
NodeLockPSENSEFCELCE
CONRCX--EXEX

Operation behavior described with base operations:

  • readCO
  • modifyCOFCE
  • modifyCOLCE
Read Set = CO , Write Set = COFCE COLCE

This operation can be executed on the following nodes:

  • PS
  • CO
  • NS
  • FC
  • CH
  • LC
  • DC

If this operation is executed the following nodes are existing:

  • AC
  • PA
  • PS
  • CO
  • NS
  • CA
  • AX