Function
I have the below function working but it does not allow negative numbers.
How can we make this adjustment....
Function Code:
java.util.regex.Pattern p = java.util.regex.Pattern.compile("^[0-9]\d*(\.\d+)?$");
java.util.regex.Matcher m = p.matcher(input);
return m.matches();
Accepted Solution
Veteran Careers First
US
I tried this and it appears to work great!
try {
new BigDecimal(input);
} catch (NumberFormatException e) {
return false;
}
return true;
Pegasystems Inc.
US
Hi , would it be possible to explain what you are trying to achieve using the function. Just thinking there might be some other solution.
Thanks,
Chithra.
Veteran Careers First
US
I need to be able to identify an alpha character and flag 'custom' error message.
I am currently testing with a validate rule and/or constraint rule.
Validate For Non-Negative numbers
- Allow whole numbers and decimals.
- Flag 'custom' error message if user puts negative number.
-When property value <= 0
-This works fine.
Validate For Non-Alpha Characters
- Allow whole numbers and decimals.
- Flag 'custom' error message if user puts any Alpha Characters.
- Need to allow negative numbers for this one so that only the alpha message displays and not both messages.
- I checked all the OOTB Edit Validates and functions and could not find anything just for alpha. So I thought to create one.
Pegasystems Inc.
US
You could try this in a method since it considers "-" as optional and must have at least one digit:
Veteran Careers First
US
Below is what I tried. It allowed the negative numbers which is good but not decimals.
java.util.regex.Pattern p = java.util.regex.Pattern.compile("^[0-9]\\d*(\\.\\d+)?$");
java.util.regex.Matcher m = p.matcher(input);
return (input.matches("-?\\d+"));
How to get decimals,whole numbers, negative numbers, but not alpha characters.
Pegasystems Inc.
US
I missed the inclusion of decimal in my previous response so here is the updated one:
return(input.matches("-?\\d+\\.?\\d+"));
This could be used in validate rule (function code) same way as you have done with "Validate For Non-Negative numbers".
Hope this helps!
Veteran Careers First
US
- Sorry to bother you again but here are my results.
- We are almost there.
- Ideally one function but maybe it needs to be more than one function. Not sure
Requirement
- Allows decimal
- Allows whole numbers
- Allows Negative
- Fails alpha
**Desire opposite result
return m.matches();
- Allows decimal
- Allows whole numbers
- **Fails negative numbers
- Fails alpha which is good
return (input.matches("-?\\d+"));
- **Fails decimals
- Sorry to bother you again but here are my results.
- We are almost there.
- Ideally one function but maybe it needs to be more than one function. Not sure
Requirement
- Allows decimal
- Allows whole numbers
- Allows Negative
- Fails alpha
**Desire opposite result
return m.matches();
- Allows decimal
- Allows whole numbers
- **Fails negative numbers
- Fails alpha which is good
return (input.matches("-?\\d+"));
- **Fails decimals
- Allows whole numbers
- Allows Negative
- Fails alpha which is good
return(input.matches("-?\\d+\\.?\\d+"));
- Allows decimal
- **Fails whole numbers
- **Fails negative numbers
- Fails alpha which is good
Pegasystems Inc.
US
No problem! I would like to confirm if you are seeing the same result as I am with the last code snippet I shared with you:
code -
String input = "-19a0";
oLog.error(input+" result : "+input.matches("-?\\d+\\.?\\d+"));
input = "190.01";
oLog.error(input+" result : "+input.matches("-?\\d+\\.?\\d+"));
input = "abc";
oLog.error(input+" result : "+input.matches("-?\\d+\\.?\\d+"));
input = "-180";
oLog.error(input+" result : "+input.matches("-?\\d+\\.?\\d+"));
input = "8900";
oLog.error(input+" result : "+input.matches("-?\\d+\\.?\\d+"));
resulted in/output:
-19a0 result : false
190.01 result : true
abc result : false
-180 result : true
8900 result : true
Veteran Careers First
US
These are the results from last snip.
- Allows decimal
- **Fails whole numbers
- **Fails negative numbers
- Fails alpha which is good
I have also tried another way.
But still having trouble.
Attached are my new results.
Accepted Solution
Veteran Careers First
US
I tried this and it appears to work great!
try {
new BigDecimal(input);
} catch (NumberFormatException e) {
return false;
}
return true;