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.ui/src/org/eclipse/birt/report/designer/internal/ui/palette/BasePaletteFactory.java
{
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.birt.designer.internal.ui.editors.schematic.tools.IToolHandleExtends#preHandleMouseDown()
		 */
		public boolean preHandleMouseUp( )
		{
			if ( getRequest( ).getNewObjectType( ) instanceof DataSetHandle )
			{
				try
				{
					Object newHandle = InsertInLayoutUtil.performInsert( getRequest( ).getNewObject( ),
							getTargetEditPart( ) );
					if ( newHandle == null )
						return false;
					setModel( newHandle );
					return super.preHandleMouseUp( );
				}
				catch ( SemanticException e )
				{
					ExceptionHandler.handle( e );
				}
			}
			return false;
		}
		/*
		 * (non-Javadoc)
		 *