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/impl/BindingColumnsEvalUtil.java
{
		
		private String columnName;
		private IBaseExpression baseExpr;
		private boolean isAggregation;
		private int type;
		
		private BindingColumn( String columnName, IBaseExpression baseExpr, boolean isAggregation, int type )
		{
			this.columnName = columnName;
			this.baseExpr = baseExpr;
			this.isAggregation = isAggregation;
			this.type = type;
		}
	}