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package com.linewell.modeldesgin.visitor
import scala.collection.mutable.ArrayBuffer
/**
* 访问者模式
* 员工特质:抽象元素类
* Created by ctao on 2015/9/2.
*/
trait Employee {
/**
* 接受一个抽象的访问者
* @param handler 抽象访问者
*/
def accept(handler: Department)
}
/**
* 正式员工:具体元素类
* @param name 姓名
* @param weeklyWage 周薪
* @param workTime 工作时间
*/
case class FullTimeEmployee(name: String, weeklyWage: Double, workTime: Int) extends Employee {
override def accept(handler: Department): Unit = handler.visit(this)
}
/**
* 兼职员工:具体元素类
* @param name 姓名
* @param hourWage 时薪
* @param workTime 工作时间
*/
case class PartTimeEmployee(name: String, hourWage: Double, workTime: Int) extends Employee {
override def accept(handler: Department): Unit = handler.visit(this)
}
/**
* 部门特质,抽象访问者特质
*/
trait Department {
/**
* 访问正式员工
* @param employee 正式员工
*/
def visit(employee: FullTimeEmployee): Unit
/**
* 访问兼职员工
* @param employee 兼职员工
*/
def visit(employee: PartTimeEmployee): Unit
}
/**
* 财务部,具体访问者类
*/
class FADepartment extends Department {
override def visit(employee: FullTimeEmployee): Unit = {
var weekWage = employee.weeklyWage
val workTime = employee.workTime
workTime match {
case x if x >= 40 => weekWage = weekWage + (workTime - 40) * 100
case x if x < 40 => weekWage = weekWage - (40 - workTime) * 80
if (weekWage < 0) {
weekWage = 0
}
}
println(s"正式员工${employee.name}实际工资为${weekWage}元")
}
override def visit(employee: PartTimeEmployee): Unit = {
val workTime = employee.workTime
println(s"兼职员工${employee.name}实际工资为${employee.hourWage * workTime}元")
}
}
/**
* 人力资源部,具体访问者
*/
class HRDepartment extends Department {
override def visit(employee: FullTimeEmployee): Unit = {
val workTime = employee.workTime
println(s"正式员工${employee.name}实际上班时间为${workTime}小时")
workTime match {
case x if x >= 40 => println(s"正式员工${employee.name}加班时间为${workTime - 40}")
case x if x < 40 => println(s"正式员工${employee.name}请假时间为${40 - workTime}")
}
}
override def visit(employee: PartTimeEmployee): Unit =
println(s"兼职员工${employee.name}实际上班时间为${employee.workTime}")
}
/**
* 员工列表类,对象结构
*/
class EmployeeArray {
private var employees = new ArrayBuffer[Employee]()
/**
* 添加员工
* @param employee 员工
*/
def addEmployee(employee: Employee) = employee match {
case e if employees.exists(e.eq(_)) => println("已经添加")
case _ => employees += employee
}
/**
* 访问
* @param department 部门
*/
def accept(department: Department) = employees.foreach(_.accept(department))
}
object Client extends App {
/**
* 员工
*/
val fte1: Employee = FullTimeEmployee("a", 500, 40)
val fte2: Employee = FullTimeEmployee("b", 600, 38)
val fte3: Employee = FullTimeEmployee("c", 550, 44)
val fte4: Employee = PartTimeEmployee("d", 15, 33)
val fte5: Employee = PartTimeEmployee("e", 17, 20)
val employeeBuffer = new EmployeeArray
/**
* 添加员工
*/
employeeBuffer.addEmployee(fte1)
employeeBuffer.addEmployee(fte1)
employeeBuffer.addEmployee(fte2)
employeeBuffer.addEmployee(fte3)
employeeBuffer.addEmployee(fte4)
employeeBuffer.addEmployee(fte5)
/**
* 部门
*/
val dep: Department = new HRDepartment
/**
* 访问
*/
employeeBuffer.accept(dep)
}
import scala.collection.mutable.ArrayBuffer
/**
* 访问者模式
* 员工特质:抽象元素类
* Created by ctao on 2015/9/2.
*/
trait Employee {
/**
* 接受一个抽象的访问者
* @param handler 抽象访问者
*/
def accept(handler: Department)
}
/**
* 正式员工:具体元素类
* @param name 姓名
* @param weeklyWage 周薪
* @param workTime 工作时间
*/
case class FullTimeEmployee(name: String, weeklyWage: Double, workTime: Int) extends Employee {
override def accept(handler: Department): Unit = handler.visit(this)
}
/**
* 兼职员工:具体元素类
* @param name 姓名
* @param hourWage 时薪
* @param workTime 工作时间
*/
case class PartTimeEmployee(name: String, hourWage: Double, workTime: Int) extends Employee {
override def accept(handler: Department): Unit = handler.visit(this)
}
/**
* 部门特质,抽象访问者特质
*/
trait Department {
/**
* 访问正式员工
* @param employee 正式员工
*/
def visit(employee: FullTimeEmployee): Unit
/**
* 访问兼职员工
* @param employee 兼职员工
*/
def visit(employee: PartTimeEmployee): Unit
}
/**
* 财务部,具体访问者类
*/
class FADepartment extends Department {
override def visit(employee: FullTimeEmployee): Unit = {
var weekWage = employee.weeklyWage
val workTime = employee.workTime
workTime match {
case x if x >= 40 => weekWage = weekWage + (workTime - 40) * 100
case x if x < 40 => weekWage = weekWage - (40 - workTime) * 80
if (weekWage < 0) {
weekWage = 0
}
}
println(s"正式员工${employee.name}实际工资为${weekWage}元")
}
override def visit(employee: PartTimeEmployee): Unit = {
val workTime = employee.workTime
println(s"兼职员工${employee.name}实际工资为${employee.hourWage * workTime}元")
}
}
/**
* 人力资源部,具体访问者
*/
class HRDepartment extends Department {
override def visit(employee: FullTimeEmployee): Unit = {
val workTime = employee.workTime
println(s"正式员工${employee.name}实际上班时间为${workTime}小时")
workTime match {
case x if x >= 40 => println(s"正式员工${employee.name}加班时间为${workTime - 40}")
case x if x < 40 => println(s"正式员工${employee.name}请假时间为${40 - workTime}")
}
}
override def visit(employee: PartTimeEmployee): Unit =
println(s"兼职员工${employee.name}实际上班时间为${employee.workTime}")
}
/**
* 员工列表类,对象结构
*/
class EmployeeArray {
private var employees = new ArrayBuffer[Employee]()
/**
* 添加员工
* @param employee 员工
*/
def addEmployee(employee: Employee) = employee match {
case e if employees.exists(e.eq(_)) => println("已经添加")
case _ => employees += employee
}
/**
* 访问
* @param department 部门
*/
def accept(department: Department) = employees.foreach(_.accept(department))
}
object Client extends App {
/**
* 员工
*/
val fte1: Employee = FullTimeEmployee("a", 500, 40)
val fte2: Employee = FullTimeEmployee("b", 600, 38)
val fte3: Employee = FullTimeEmployee("c", 550, 44)
val fte4: Employee = PartTimeEmployee("d", 15, 33)
val fte5: Employee = PartTimeEmployee("e", 17, 20)
val employeeBuffer = new EmployeeArray
/**
* 添加员工
*/
employeeBuffer.addEmployee(fte1)
employeeBuffer.addEmployee(fte1)
employeeBuffer.addEmployee(fte2)
employeeBuffer.addEmployee(fte3)
employeeBuffer.addEmployee(fte4)
employeeBuffer.addEmployee(fte5)
/**
* 部门
*/
val dep: Department = new HRDepartment
/**
* 访问
*/
employeeBuffer.accept(dep)
}
发表评论
-
linux mongodb3安装
2015-10-29 15:33 259http://blog.csdn.net/cjuexuan/a ... -
scala代码重构(用递归代替var和while)
2015-09-07 19:47 380原有代码,其中使用了while循环和var /** ... -
再探设计模式之观察者模式(股票通知系统)
2015-09-05 10:28 496package com.linewell.modeldesig ... -
再探设计模式之状态模式(纸牌游戏的开发)
2015-09-04 13:52 537状态模式主要用于检测和切换状态,在状态模式下状态的转化对于客户 ... -
再探设计模式之访问者模式
2015-09-03 14:44 478访问者模式的使用条件比较苛刻主要可以以用于新增访问者时只需要 ... -
scala实现模版方法模式
2015-09-02 20:54 415package com.linewell.modeldesgi ... -
scala实现状态模式
2015-09-02 16:37 385package com.linewell.modeldesgi ... -
scala实现观察者模式
2015-09-02 16:35 588package com.linewell.modeldesgi ... -
scala实现迭代器模式
2015-09-01 22:56 465package com.linewell.modeldesgi ... -
scala实现备忘录模式
2015-09-01 22:54 339package com.linewell.modeldesgi ... -
scala实现中介者模式
2015-09-01 14:48 286package com.linewell.modeldesgi ... -
scala实现解释器模式
2015-08-31 20:20 316本来是看解释器模式,但感觉scala的实现的流利接口可以更优雅 ... -
scala实现命令模式
2015-08-30 21:20 269package com.linewell.modeldesgi ... -
scala实现职责链模式
2015-08-30 13:38 304package com.linewell.modeldesgi ... -
scala实现享元模式
2015-08-30 00:17 335package com.linewell.modeldesgi ... -
scala实现代理模式
2015-08-30 00:16 486package com.linewell.modeldesgi ... -
scala实现外观模式
2015-08-28 21:41 310package com.linewell.modeldesgi ... -
scala实现装饰者模式
2015-08-16 19:52 394package com.linewell.modeldesgi ... -
scala实现组合模式
2015-08-16 11:14 834package com.linewell.modeldesgi ... -
scala实现桥接模式
2015-08-16 11:13 311package com.linewell.modeldesgi ...
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