Bug 119331 Library - name space terminology and behavior
During BIRT 2.0 library feature review meeting the following change was decided. - Change the term namespace to 'prefix' - By default use the library name as the prefix ( namespace ); the dialog to input prefix should be prompted only if hte auto generated prefix is not unique.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
* @param isNew
	 *            true: insert and paste; false: override and paste
	 * @return can paste
	 */
	public static boolean handleValidateContainColumnPaste(
			ColumnHandle targetObj, ColumnBandData transferData, boolean isNew )
	{
		int columnNumber = HandleAdapterFactory.getInstance( )
				.getColumnHandleAdapter( targetObj )
				.getColumnNumber( );
		Object parent = targetObj.getContainer( );
		if ( parent instanceof TableHandle )
		{
			if ( isNew )
			{
				return ( (TableHandle) parent ).canInsertAndPasteColumn( transferData,
						columnNumber );
			}
			return ( (TableHandle) parent ).canPasteColumn( transferData,
					columnNumber,
					true );
		}
		else if ( parent instanceof GridHandle )
		{
			if ( isNew )
			{
				return ( (GridHandle) parent ).canInsertAndPasteColumn( transferData,
						columnNumber );
			}
			return ( (GridHandle) parent ).canPasteColumn( transferData,