return ( (DataSetItemModel) element ).getDisplayName( );
return ( (ComputedColumnHandle) element ).getName( );
	public String getDisplayText( Object element )	{		if ( element instanceof Object[] )		{			if ( element instanceof Operator[] )			{				if ( element == OPERATORS_ASSIGNMENT )				{					return DISPLAY_TEXT_ASSIGNMENT;				}				else if ( element == OPERATORS_COMPARISON )				{					return DISPLAY_TEXT_COMPARISON;				}				else if ( element == OPERATORS_COMPUTATIONAL )				{					return DISPLAY_TEXT_COMPUTATIONAL;				}				else if ( element == OPERATORS_LOGICAL )				{					return DISPLAY_TEXT_LOGICAL;				}			}			else if ( element instanceof ILocalizableInfo[] )			{				// including class info,method info and member info				ILocalizableInfo info = ( (ILocalizableInfo[]) element )[1];				StringBuffer displayText = new StringBuffer( info.getName( ) );				if ( info instanceof IMethodInfo )				{					IMethodInfo method = (IMethodInfo) info;					displayText.append( "(" ); //$NON-NLS-1$					boolean isFirst = true;					Iterator argumentListIter = method.argumentListIterator( );					IArgumentInfoList arguments = (IArgumentInfoList) argumentListIter.next( );					for ( Iterator iter = arguments.argumentsIterator( ); iter.hasNext( ); )					{						IArgumentInfo argInfo = (IArgumentInfo) iter.next( );						if ( !isFirst )						{							displayText.append( ", " ); //$NON-NLS-1$						}						isFirst = false;						displayText.append( argInfo.getDisplayName( ) );					}					displayText.append( ")" ); //$NON-NLS-1$					if ( !argumentListIter.hasNext( ) )					{						displayText.append( " : " ); //$NON-NLS-1$						String returnType = method.getReturnType( );						if ( returnType == null )						{							returnType = "void"; //$NON-NLS-1$						}						displayText.append( returnType );					}				}				else if ( info instanceof IMemberInfo )				{					displayText.append( " : " ); //$NON-NLS-1$					displayText.append( ( (IMemberInfo) info ).getDataType( ) );				}				return displayText.toString( );			}			return ALL;		}		else if ( element instanceof String )		{			return (String) element;		}		else if ( element instanceof Operator )		{			return ( (Operator) element ).symbol;		}		else if ( element instanceof DesignElementHandle )		{			return ( (DesignElementHandle) element ).getQualifiedName( );		}		else if ( element instanceof DataSetItemModel )		{			return ( (DataSetItemModel) element ).getDisplayName( );		}		return element.toString( );	}