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
/**
	 * Pastes elements. Includes transaction.
	 * 
	 * @param transferData
	 *            single or multiple transfer data, every data must be an
	 *            instance of <code>DesignElementHandle</code> or
	 *            <code>DesignElement</code>
	 * @param targetObj
	 *            container or sibling. Copy position is after the sibling or
	 *            the last in the container
	 * @return paste result
	 */
	public static boolean copyHandles( Object transferData, Object targetObj )
	{
		if ( getColumnHandle( transferData ) != null )
		{
			return copyColumn( getColumnHandle( transferData ),
					targetObj,
					false );
		}
		int canContain = handleValidateTargetCanContain( targetObj,
				transferData,
				true );
		int position = calculateNextPosition( targetObj, canContain );
		if ( position > -1 )
		{
			targetObj = getDesignElementHandle( targetObj ).getContainerSlotHandle( );
		}
		return copyHandles( transferData, targetObj, position );
	}