Bug 211710 [Regression] Data of cascading parameters in the report extended from the library can not be selected from the drop-down list when preview [01]
Description: Data of cascading parameters in the report extended from the library can not be selected from the drop-down list when preview. Build number: 2.2.2.v20071203-0630 Steps to reproduce: 1. New a Library with cascading parameters. 2. New a report and extend the cascading parameters from the library and preview. Expected result: Values can be selected from the drop-down list. Actual result: Values can not be selected from the drop-down list. Error log: N/A
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
{
		String labelColumnName;
		String valueColumnName;
		String valueType;
		
		public ParameterBinding( String labelColumnName, String valueColumnName, String valueType )
		{
			this.labelColumnName = labelColumnName;
			this.valueColumnName = valueColumnName;
			this.valueType = valueType;
		}
	}
	
	class ParameterIRVisitor extends DesignVisitor