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1 /* Reattore HTTP Server 2 3 Copyright (C) 2002 Michael Hope <michaelh@juju.net.nz> 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 19 $Id: Variable.java,v 1.2 2003/03/03 05:14:39 michaelh Exp $ 20 */ 21 22 package juju.reattore.perfcap.var; 23 24 /*** An independant variable that takes on a set of values. Modeled 25 after Iterator. 26 */ 27 public interface Variable { 28 29 /*** The name of this variable. 30 31 @return The name. 32 */ 33 String getName(); 34 35 /*** The current value of this variable. May be called many 36 times. 37 38 @return The current value. 39 */ 40 Object getValue(); 41 42 /*** Returns true if there are more values in this sequence. 43 44 @return true if more are available. 45 @throws Exception on error. 46 */ 47 boolean hasNext() 48 throws Exception; 49 50 /*** Advances to the next value. #getValue is not valid until this 51 is called. 52 53 @throws Exception on error. 54 */ 55 void next() 56 throws Exception; 57 58 /*** Initialises and resets this variable. 59 60 @throws Exception on error. 61 */ 62 void begin() 63 throws Exception; 64 65 /*** Called when done with this variable. 66 67 @throws Exception on error. 68 */ 69 void end() 70 throws Exception; 71 }

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