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
}
		return category;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.ui.dialogs.IExpressionProvider#getChildren(java.lang.Object)
	 */
	public Object[] getChildren( Object parent )
	{
		ArrayList childrenList = new ArrayList( );
		if ( parent instanceof Object[] )
		{
			Object[] array = (Object[]) parent;
			if ( array instanceof Operator[] )
			{
				return array;
			}
			for ( int i = 0; i < array.length; i++ )
			{
				Object[] children = getChildren( array[i] );
				childrenList.addAll( Arrays.asList( children ) );
			}
		}
		else if ( parent instanceof String )
		{
			if ( PARAMETERS.equals( parent ) )
			{
				childrenList.add( ALL );
				for ( Iterator iter = moduleHandle.getParameters( )