[图解]SysML和EA建模住宅安全系统-08-安全企业用例图
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接下来,我们就来画一下
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安全企业组织的用例图,画在哪里
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它是在3-用例这个包下面
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这是包的名字
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这是图的名字
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我们来画一下
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这里,3-用例
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这个包下面,右键点它
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添加一个图
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然后选用例
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然后图的名字叫什么
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安全企业用例
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安全企业用例
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OK,好
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uc package3-用例
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安全企业用例
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对上了
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然后,首先我们加一个边界框
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把这个框加进去
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这个框在哪里
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就这个了
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这里,大一点,过来一点
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然后这个框这里就是它的组织的名称了
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安全企业
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然后接下来是执行者
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居民、调查员
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物理环境、入侵者,4个
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这里,居民
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调查员
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物理环境
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入侵者
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好,执行者有了
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小一点
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接下来就用例了
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提供应急响应
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然后下面
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我们把它加进去
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医疗
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然后是入侵者、火灾
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提供(写错字)
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火灾
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然后这三个就泛化到上面这个
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这里它泛化是搞成一棵树一样的
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这三个是并在一起的
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我们把它调一下
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怎么调
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右键点这个,这里选树的风格
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这个也调
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好
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然后这边有一个减轻故障的用例
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然后它扩展到这个用例,画过来
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然后扩展,这里,扩展这里它有个名字
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这个不用加就可以的
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乱加在这里
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没有必要
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既然它这里有了
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我们就加进去,加在哪里
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因为扩展本身它实际上是相当于一种关联
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我们就加在它的属性这里
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给它命个名就行了
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这个名字叫什么
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故障事件
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我们选中这个
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然后这里,故障事件
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下来一点,这样
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下面还有一个提供调查数据
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调查员,往这边挪一点
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这样,接下来就要建立
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它们之间的关联
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画过来
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我们要注意到这个图上面
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它关联是没有方向的
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UML规范里面
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包括SysML里面
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是没有指定说一定要用箭头
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我们前面示例的
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我在幻灯片上示例那个是有箭头的
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就是说我认为是一种更好的做法
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就是说,从主执行者指向用例的
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我们就认为是主动的
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而用例指向辅执行者是被动的
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那么如果说不用箭头的话
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一般是把辅助执行者放在右边
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然后主执行者放左边
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但是这本身还是有问题的,为什么
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因为主辅只是针对某个用例而言
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针对这个事情上我是主动的
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很可能另外一个事情我是被动的
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所以你不可能说一个Actor
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它就是辅执行者,不一定
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可能这个用例
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它是主,下一个用例它就是辅了
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所以还是得要箭头
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但这里既然没有画,我们就算了
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就不画了
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画过来,选关联
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还有吗
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哪个
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入侵者,火灾
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上来
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应该是火灾、物理环境
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入侵者
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好,齐了
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然后我们来对齐一下
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过来,这三个我们对齐一下
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下来一点,好
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我们看,对照一下
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差不多,就这样
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这个就是我们的图17.13
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安全企业用例
原文地址:https://blog.csdn.net/rolt/article/details/140151062
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