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Option Vs Switch


Option: -

     In TDL Option is an attribute which can be used by various definitions, to provide a conditional     result in a program. The ‘Option’ attribute can be used in the ‘Menu’, ‘Form’, ‘Part’, ‘Line’, ‘Key’, ‘Field’, ‘Collection’, ‘Import File’ and ‘Import Object’ definitions.
Syntax





Option : Optional definition :  Logical Condition
Where,
is the name of a definition, defined as optional definition using the Definition modifier!

If the ‘Logical’ value is set to TRUE, then the Optional definition becomes a part of the original definition, and the attributes of the original definition are modified based on this definition.

Example: -  


If you want to add the option in field the you can use following syntax.


[Field : FldMain]
     Option : FldFirst : cond1 
    Option : FldSecond: cond2 
The field FldFirst is activated when cond1 is true. The field FldSecond is activated when cond2 is true. Optional definitions are created with the symbol prefix "!" as follows:
      [!Field : FldFirst] 
            [!Field : FldSecond]


Switch  :
The ‘Switch - Case’ attribute is similar to the ‘Option’ attribute, but reduces the code complexity and improves the performance of the TDL Program. The ‘Option’ attribute compulsorily evaluates all the conditions for all the options provided in the description code, and applies only those which satisfy the evaluation conditions. The attribute ‘Switch’ can be used in scenarios where evaluation is carried out only till the first condition is satisfied. Apart from this, ‘Switch’ statements can be grouped using a label. Therefore, multiple switch groups can be created, and zero or one of the switch cases could be applied from each group.
Syntax

Switch: Label: Desc name : Condition

Example 
[Field: Sample Switch] 
 Set as : "Default Value"
Switch : Case1: Sample Switch1: ##SampleSwitch1
Switch : Case1: Sample Switch2: ##SampleSwitch2
Switch : Case1: Sample Switch3: ##SampleSwitch3
Switch : Case2: Sample Switch4: ##SampleSwitch4

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