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Using calculated fields results in a BIRT exception occurred error

Troubleshooting


Problem

This technote identifies an issue that can occur in IBM Rational ClearQuest. "A BIRT exception occurred" error occurs when using calculated fields in BIRT reports.

Symptom

Create a calculated field in a BIRT report. When you run the report, this error occurs:

A BIRT exception occurred.

  Plug-in Provider:Eclipse.org
 Plug-in Name:BIRT Data Engine
 Plug-in ID:org.eclipse.birt.data
 Version:2.2.1.r22x_v20070925
 Error Code:data.engine.CompCol.WrongDataType

  Error Message:The data type of computed column "<column>" is java.lang.String, but one of its value is "null", which cannot be converted to java.lang.String.

[{"Product":{"code":"SSSH5A","label":"Rational ClearQuest"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Reporting","Platform":[{"code":"PF033","label":"Windows"}],"Version":"7.1.2;7.1.1;7.1.2.2;7.1.2.1;7.1.1.5;7.1.1.4;7.1.1.3;7.1.1.2;7.1.1.1;7.1;7.1.0.1;7.1.0.2","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]

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Document Information

Modified date:
01 August 2018

UID

swg21503708