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https://issues.apache.org/jira/browse/NIFI-14509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17948908#comment-17948908
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Daniel Stieglitz commented on NIFI-14509:
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[~exceptionfactory] Is the desired behavior to fall back to defaults the
expected behavior in other processors and controller services?
> ExcelReader - Starting Row default value
> ----------------------------------------
>
> Key: NIFI-14509
> URL: https://issues.apache.org/jira/browse/NIFI-14509
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 2.3.0
> Reporter: Philipp Korniets
> Priority: Minor
>
> If Starting Row in Excel reader is set to use flowfile attribute (i.e.
> ${startRow}) and attribute is missing ExcelReader throws an error message
> {code:java}
> java.lang.NumberFormatException: For input string: ""
> at
> java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)
> at java.base/java.lang.Integer.parseInt(Integer.java:672)
> at java.base/java.lang.Integer.parseInt(Integer.java:778)
> at
> org.apache.nifi.attribute.expression.language.StandardPropertyValue.asInteger(StandardPropertyValue.java:88){code}
> Of course we can use
> {code:java}
> ${startRow:isNull():ifElse(1,${startRow})}{code}
> But it would be nice to go back to defaults if attribute is missing.
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