| 基于对象的Any Undo策略 |
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| 引用本文： | 李春萍,窦万峰.基于对象的Any Undo策略[J].计算机工程与设计,2005,26(7):1712-1714,1717. |
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| 作者姓名： | 李春萍 窦万峰 |
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| 作者单位： | 1. 玉溪师范学院,计算机科学系,云南,玉溪,653100
2. 南京师范大学,数学与计算机科学学院,计算机科学系,江苏,南京,210097 |
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| 基金项目： | 国家自然科学基金项目（10275035）：江苏省教委基金项目（02KJD520006）. |
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| 摘 要： | Undo是基于对象的协同图形编辑系统的重要功能，可用于误操作的恢复。Undo的实现极具挑战性，因为分布协同环境下操作具有并发性，Undo的实现与一致性维护密切相关。提出的基于对象的Any Undo策略从操作语意的角度探讨了Undo操作的一致性维护，并给出了具体的实现机制。给出的支持机制都得到了实例证明，其可行性也在原型系统CoDraftPaint中得到初步验证。
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| 关 键 词： | Undo／Redo 协同图形编辑系统 一致性维护 几何属性 非几何属性 |
| 文章编号： | 1000-7024（2005）07-1712-03 |
| 收稿时间： | 2004-06-08 |
| 修稿时间： | 2004-06-08 |
Object-based any undo model |
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| LI Chun-ping,DOU Wan-feng.Object-based any undo model[J].Computer Engineering and Design,2005,26(7):1712-1714,1717. |
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| Authors: | LI Chun-ping DOU Wan-feng |
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| Abstract: | Undo is a useful and widely supported feature in object-based collaborative graphics editing systems, which can be used to recover from erroneous operations. Designing a successful undo solution is a great challenge. Since concurrency is the common cause of complication of group editing operations, it is obviously that concurrency control algorithms are related closely with the solutions for undoing any operation at any time, An object-based any undo model is proposed to support consistency preservation of undoing any operation according its rich semantics, This model is implemented on a prototype system, CoDraftPaint, |
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| Keywords: | undo/redo collaborative graphics editing systems concurrency preservation geometrical attribution non-geometrical attribution |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
