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
{
		boolean accept( IResultIterator iterator ) throws BirtException;
	}
	
	private class ParameterGroupFilter implements SelectionFilter
	{
		Object[] keyValues;
		String[] valueColumnNames;
		String[] valueTypes;
		
		public ParameterGroupFilter( Object[] keyValues,
				CascadingParameterGroupHandle parameterGroup )
		{
			this.keyValues = keyValues;
			valueColumnNames = new String[keyValues.length];
			valueTypes = new String[keyValues.length];
			SlotHandle parameterSlots = parameterGroup.getParameters( );
			for ( int i = 0; i < keyValues.length; i++ )
			{
				ScalarParameterHandle tempParameter = (ScalarParameterHandle) parameterSlots
						.get( i );
				valueColumnNames[i] = ParameterHelper.getValueColumnName( tempParameter );
				valueTypes[i] = tempParameter.getDataType( );
			}
		}
		
		public boolean accept( IResultIterator iterator ) throws BirtException
		{
			for ( int i = 0; i < valueColumnNames.length; i++ )