Variadic functions about springfilter HOT 8 CLOSED

I think the list should be separated with , instead of +. In code it's easier to create a list of params separated with commas to construct the concat that with +, but keeping the simplified version you mentioned:

concat(firstName, ' ', lastName):'SearchTerm'

And, because spaces it's going to be very common for a concat, maybe a spaceConcat(firstName, lastName)that automatically adds spaces between fields?

I do not understand what you mean by numbers, it should be possible with concat('1', '2') to get 12, what is the advantage of concat(1,2)?

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Good suggestion. I think that the comma separator is a better option too. I will try to implement a generic solution soon.

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I am sorry for not being clear about 'numbers', it was supposed to be equivalent to the sum function when used with numbers, it has no relation to concatenation. :)

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No worries :P

I think it's confusing to use the concat() for two separated functions depending on the input.

I do not understand the functionality of it tho, if you put concat(1,2), what will be done with the resulting 3?

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No, numbers are not supposed to be used with the concat function, this one can only accept strings. :D
The + operator can possibly used with numbers for addition, and with strings for concatenation.

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Ah, ok, so using + when working with numbers in all the filters, right?

If that's the case, the other main operators (- / *) should work as well.

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Yes. You are right about implementing the other operators. But mathematical operations will have no use case I guess, so I am leaving this idea for now. I will only implement the commas for variadic functions.

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@albertodiazsaez Just released version https://github.com/turkraft/spring-filter/releases/tag/1.0.3, you may now do concat(firstName, ' ', lastName):'SearchTerm' :)

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