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
}
		}
		else if ( parent instanceof DataSetHandle )
		{
			DataSetItemModel[] models = DataSetManager.getCurrentInstance( )
					.getColumns( ( (DataSetHandle) parent ), false );
			childrenList.addAll( Arrays.asList( models ) );
		}
		else if ( parent instanceof ParameterGroupHandle )
		{
			childrenList.addAll( ( (ParameterGroupHandle) parent ).getParameters( )
					.getContents( ) );
		}
		Object[] children = childrenList.toArray( );
		if ( filterList != null && !filterList.isEmpty( ) )
		{
			for ( Iterator iter = filterList.iterator( ); iter.hasNext( ); )
			{
				Object obj = iter.next( );
				if ( obj instanceof ExpressionFilter )
				{
					children = ( (ExpressionFilter) obj ).filter( parent,
							children );
				}
			}
		}
		return children;
	}
	/*
	 * (non-Javadoc)