Hook: Define New Error Code

Requirement

A new type of error can occur in a process and a message and error code need to be assigned.

Method of Adaptation

Augment feature

Level of Support

Parameter Pattern

HotSpot

Processes

Hooks used

Define a new process , Incorporate a new process

Participants

NewProcess

Changes

1. NewProcess = Define a new process [NewProcess].
2. NewProcess defines error code constant. This is an int value which is not in the interval [ ERR_LOWERBOUND , ERR_UPPERBOUND ].
3. NewProcess.getErrorMsg overrides SaleProcess.getErrorMsg :
1. synchronisation ( NewProcess.getErrorMsg , SaleProcess.getErrorMsg ).
2. NewProcess.getErrorMsg returns error message string for the new error code.
3. NewProcess.getErrorMsg returns SaleProcess.getErrorMsg for any other error code.
4. Incorporate a new process [Process = NewProcess].

Comments

• You can use '%o' anywhere in your error message to parameterize it. Every occurrence of '%o' will be replaced by the extra information given when the error occurred.