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/api/querydefn/Binding.java
{
	private List aggregateOn;
	private List argument;
	private IBaseExpression expr;
	private IBaseExpression filter;
	private String aggrFunc;
	private String name;
	private int dataType;
	
	public Binding( String name )
	{
		this ( name, null );