Bug 141950 Selection of select value in data set filter is error
Details: Selection of select value in data set filter is error Step: 1.New a report design. 2.Create a sample datasource and dataset. 3.Switch to filter. 4.Select a value in expression. 5.Drop the list of the value1 and select <select value...> Actual result: No value is appear and pop up an error. It said that "An expression has not been set"
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/util/DataSetProvider.java
if ( dataSetDesign != null )
		{
			QueryDefinition defn = new QueryDefinition( null );
			defn.setDataSetName( dataSetDesign.getName( ) );
			if ( rowsToReturn > 0 )
			{
				defn.setMaxRows( rowsToReturn );
			}
			List parameters = dataSetDesign.getParameters( );
			Iterator iter = parameters.iterator( );
			while ( iter.hasNext( ) )
			{
				ParameterDefinition paramDefn = (ParameterDefinition) iter.next( );
				if ( paramDefn.isInputMode( ) )
				{
					if ( paramDefn.getDefaultInputValue( ) != null )
					{
						InputParameterBinding binding = new InputParameterBinding( paramDefn.getName( ),
								new ScriptExpression( paramDefn.getDefaultInputValue( )
										.toString( ) ) );
						defn.addInputParamBinding( binding );
					}
				}
			}
			return defn;
		}
		return null;
	}
	/**
	 * @param dataSetDesign