Bug 118780 Set alias for columns in data set but in expression builder still shows the old columns name when select the dataset.
Description: Set alias for columns in data set but in expression builder still shows the old columns name when select the dataset. Steps to reproduce: 1. New a datasource and a dataset 2. Set alias of the first column in the dataset to "column1". 3. Insert a data item and bind it to dataset. 4. In the expression builder, select the dataset and double click the first column name. Expected result: According to scr #78193 in tracker, the first column in expression build should use alias name instead of original name. Actual result: The original name of the first column was listed in the below of expression builder but the alias name appeared above as row["column1"] after double click the original name.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ExpressionProvider.java
if ( element instanceof Operator )
		{
			return ( (Operator) element ).insertText;
		}
		else if ( element instanceof ILocalizableInfo[] )
		{
			IClassInfo classInfo = (IClassInfo) ( (ILocalizableInfo[]) element )[0];
			ILocalizableInfo info = ( (ILocalizableInfo[]) element )[1];
			StringBuffer insertText = new StringBuffer( );
			if ( info instanceof IMemberInfo )
			{
				IMemberInfo memberInfo = (IMemberInfo) info;
				if ( memberInfo.isStatic( ) )
				{
					insertText.append( classInfo.getName( ) + "." ); 
				}
				insertText.append( memberInfo.getName( ) );
			}
			else if ( info instanceof IMethodInfo )
			{
				IMethodInfo methodInfo = (IMethodInfo) info;
				if ( methodInfo.isStatic( ) )
				{
					insertText.append( classInfo.getName( ) + "." ); 
				}
				insertText.append( methodInfo.getName( ) );
				insertText.append( "()" ); 
			}
			return insertText.toString( );
		}