Is there a way to convert a String to evaluable SAIL expression ? I

Raj Yadla over 9 years ago

Is there a way to convert a String to evaluable SAIL expression ?

I have a comparative expression saved in a database field, I need to retrieve it from the database and evaluate it within a condition in SAIL.

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jackm829 over 9 years ago +1
A Score Level 3

You could try eval(). My understanding is that this is an undocumented function. You will have to test to make sure that it works with your Appian version. Example: eval("count({1,2,3})") returns 3. In…
Raj Yadla over 9 years ago +1

Thanks all ,eval() did the trick for me.

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0 Mike Schmitt
Certified Lead Developer
over 9 years ago

Per jackm's comments earlier, it looks like eval() might be something you can leverage to handle these. It is an undocumented function as of 7.8 at least, so Appian Best Practices (AFAIK) recommend it to be used very cautiously if at all. However, given that, I was able to test it as working in both of the code examples you posted earlier. What's more, you can push a value into a local variable and then evaluate text containing that local variable.
i.e.

=load(
local!value: "asdf",
eval(
"len(local!value)=4"
)
)
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0 Mike Schmitt
Certified Lead Developer
over 9 years ago

Per jackm's comments earlier, it looks like eval() might be something you can leverage to handle these. It is an undocumented function as of 7.8 at least, so Appian Best Practices (AFAIK) recommend it to be used very cautiously if at all. However, given that, I was able to test it as working in both of the code examples you posted earlier. What's more, you can push a value into a local variable and then evaluate text containing that local variable.
i.e.

=load(
local!value: "asdf",
eval(
"len(local!value)=4"
)
)
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

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