Bug 189100 [Regression]X-axis data column issue[0001]
Description: [Regression]X-axis data column issue[0001] Step: 1.New a sample datasource and dataset from OFFICES 2.New a chart and use the dataset 3.Change the data type of OFFICECODE from string to integer. 4.Drop the column of OFFICECODE to Value(Y)Series. Actual result: Show the error message: Unable to use a text data to render a numerical/datetime axis.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/executor/transform/pass/PassManager.java
IEventHandler eventHandler = this.populator.getEventHandler( );
		if ( eventHandler != null )
			eventHandler.handleEndOfDataSetProcess( this.populator.getResultIterator( ) );
	}
	
	/**
	 * Calculate the aggregations in column binding. Those aggregation might be explicitly defined
	 * by user, or implicitly defined by engine ( use in highlight, TOC, mapping, etc.)
	 * 
	 * @throws DataException
	 */
	private void calculateAggregationsInColumnBinding( ) throws DataException
	{
		IExpressionProcessor ep = populator.getExpressionProcessor();
		Map results = populator.getEventHandler( ).getColumnBindings( );
	
		DummyICCState iccState = new DummyICCState( results );
		ep.setResultIterator( populator.getResultIterator( ) );
		
		while ( !iccState.isFinish( ) )
		{
			ep.evaluateMultiPassExprOnCmp( iccState, false );
		}
	}
	/**
	 * Class DummyICCState is used by ExpressionProcessor to calculate multipass 
	 * aggregations.
	 *
	 */
	private class DummyICCState implements IComputedColumnsState