[immortality]

the condition?expression1:expression2 makes limitations for me.I need more freedom in conditions.are we limited to groovyBC syntax or exists a way to extend this to if-elseif-else conditions?i need to set several conditions for all fractionExpression,valueExpression and gradientExpression.

[immortality]

i need to be certain.any answer?

[gschaider]

Originally Posted by immortality

the condition?expression1:expression2 makes limitations for me.I need more freedom in conditions.are we limited to groovyBC syntax or exists a way to extend this to if-elseif-else conditions?i need to set several conditions for all fractionExpression,valueExpression and gradientExpression.

You're not serious with that question, right? Of course you can do if-elseif-cascades:

 cond1 ? val1 : (cond2 ? val2 : val3)

[immortality]

i said a simple example.my bc's are unfortunately much complicated.it should include sub or supersonic and inflow or outflow conditions at each patch.thanks.

[gschaider]

Originally Posted by immortality

i said a simple example.

Where? Not in this thread

There is no simpler example

Originally Posted by immortality

my bc's are unfortunately much complicated.it should include sub or supersonic and inflow or outflow conditions at each patch.thanks.

Modularize the expressions to make them more readable with variables. A sketch (fill out the dots yourself):

variables (
  "isSupersonic= .....;"
  "isInflow= .....;"
  "superSonicInVal=....;"
  "subsonicInval=.....;"
);

valueExpression=isInflow ? ( isSuperSonic ? superSonicInVal : subsonicInval) : ...";
fractionExpression= isInflow ? ....";

That should make it readable and consistent.