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https://issues.apache.org/jira/browse/NIFI-10042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brendan updated NIFI-10042:
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Issue Type: Improvement (was: Bug)
> Expression ifElse Treats Parameter as Text.
> -------------------------------------------
>
> Key: NIFI-10042
> URL: https://issues.apache.org/jira/browse/NIFI-10042
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Brendan
> Priority: Major
>
> When using expression language on Attribute and storing a reusable expression
> as a parameter e.g get last day of month based on todays date
> the if Else condition will treat the parameters as raw text and not validate
> the expression in the parameter.
> e.g
> {code:json}
> {code:json}
> ${data_quality_performance_as_of_date
> :isEmpty()
> :not()
> :ifElse(
> ${data_quality_performance_as_of_date
> :toDate('yyyyMMdd')
> :format('yyyy-MM-dd')
> },
> #{expression.end_of_last_month})
> :format('yyyy-MM-dd')
> }
> )
> }
> {code}
> Essentially the Expression would unpack to something like below but instead I
> get the raw text expression set to my attribute.
> {code:json}
> ${data_quality_performance_as_of_date
> :isEmpty()
> :not()
> :ifElse(
> ${data_quality_performance_as_of_date
> :toDate('yyyyMMdd')
> :format('yyyy-MM-dd')
> },
> ${now()
> :toNumber()
> :format('yyyy-MM-dd')
> :toDate('yyyy-MM-dd', 'GMT')
> :toNumber()
> :minus(${
> now()
> :toNumber()
> :format('dd')
> :toNumber()
> :multiply(86400)
> :multiply(1000)
> })
> :format('yyyy-MM-dd')
> }
> )
> }
> {code}
> The result is here in some cases you can use parameters in this expression
> but the desired outcome is not as expected unless
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