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Chart, AllSectionsNoDetail, & no data = error


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By: David Karnowski - karnowski

Chart, AllSectionsNoDetail, & no data = error

2005-11-11 09:42

It appears to me that if you have:

 

1) whenNoDataType="AllSectionsNoDetail"

2) a piechart in a band other than "detail", regardless of the key (even if you fix it as something that never is null: "test" say)

3) a report query that returns no data

 

that the report will fail with a:

java.lang.IllegalArgumentException: Null 'key' argument.

 

I've only tested this with PieCharts, but assume that it probably happens with others as well.

 

The workaround is to set the printWhenExpression to be something that will only be true if at least one row is returned. This workaround is OK, but is something that developers will regularly forget to do and may not become apparent until it's too late. So I request that some logic is put in place so that this error does not occur (perhaps the charts are just not displayed) when no data is returned from the report's query.

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