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
* (non-Javadoc)
	 * @see org.eclipse.birt.data.engine.api.IBinding#setExpression(java.lang.String)
	 */
	public void setExpression( IBaseExpression expr )
	{
		this.expr = expr;
		
	}
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.engine.api.IBinding#setFilter(org.eclipse.birt.data.engine.api.IBaseExpression)
	 */
	public void setFilter( IBaseExpression expr )
	{
		this.filter = expr;
	}
	
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.engine.api.IBinding#getBindingName()
	 */
	public String getBindingName( )
	{
		return this.name;
	}
	public IBaseExpression getExpression( )
	{
		return this.expr;
	}
}