topic Re: WFA function to extract portions of a fqdn in Active IQ Unified Manager Discussions

WFA function to extract portions of a fqdn

skellner — Thu, 05 Jun 2025 06:23:41 GMT

I try to create a function to extract a portion of a fqdn. When I try it like this I get an error and don't know why. Maybe someone can help me with this.

def extractPrefixArrayName(array_name,region)

{

String hostname = splitByDelimiter(array_name,'\\.',0);

return hostname.Substring(0,1)+hostname.Substring(6,5)+region;

}

When I test it with extractPrefixArrayName("g100bpmc002.g100.intern","d") I get the following error

[Error: failed to access property: extractPrefixArrayName("g100bpmc002.g100.intern","d"): [Error: unable to resolve method: java.lang.String.Substring(java.lang.Integer, java.lang.Integer) [arglength=2]]

[Near : {... Unknown ....}]

[Line: 1, Column: 0]]

[Near : {... "g100bpmc002.g100.intern","d" ....}]

[Line: 1, Column: 0]

Re: WFA function to extract portions of a fqdn

dekel — Mon, 02 Jul 2012 15:43:11 GMT

Hi,

There are two issues with this function

1) You need to use substring and not Substring -Java is case sensitive

2) you need to do hostname.substring(5,6) and not hostname.substring(6,5) - Otherwise you will get index of bound

The result of the below function will be

Input :extractPrefixArrayName("g100bpmc002.g100.intern","d")

Output :gpd

def extractPrefixArrayName(array_name,region)

{

String hostname = splitByDelimiter(array_name,'\\.',0);

return hostname.substring(0,1)+hostname.substring(5,6)+region;

}

Note that in your function all positions are hard coded (0,1 and 5,6) ,you assume all host names length are the same -not sure if this is indeed true

Hope it helps

Re: WFA function to extract portions of a fqdn

skellner — Wed, 04 Jul 2012 05:38:27 GMT

Hi,

thanks for your help. My fault was not to recognize that this is Java. So this is good to know.

Best regards

Stefan