设计模式学习-----组合模式

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更多发布于：2012-12-13 14:40

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	组合模式　　　GOOD：整体和部分可以被一致对待（如WORD中复制一个文字、一段文字、一篇文章都是一样的操作） [html] #include <iostream> #include <string> #include <vector> using namespace std; class Component { public: string m_strName; Component(string strName) { m_strName = strName; } virtual void Add(Component* com)=0; virtual void Display(int nDepth)=0; }; class Leaf : public Component { public: Leaf(string strName): Component(strName){} virtual void Add(Component* com) { cout<<"leaf can't add"<<endl; } virtual void Display(int nDepth) { string strtemp; for(int i=0; i < nDepth; i++) { strtemp+="-"; } strtemp += m_strName; cout<<strtemp<<endl; } }; class Composite : public Component { private: vector<Component> m_component; public: Composite(string strName) : Component(strName){} virtual void Add(Component com) { m_component.push_back(com); } virtual void Display(int nDepth) { string strtemp; for(int i=0; i < nDepth; i++) { strtemp+="-"; } strtemp += m_strName; cout<<strtemp<<endl; vector<Component>::iterator p=m_component.begin(); while (p!=m_component.end()) { (p)->Display(nDepth+2); p++; } } }; //客户端 int main() { Composite* p=new Composite("小王"); p->Add(new Leaf("小李")); p->Add(new Leaf("小赵")); Composite* p1 = new Composite("小小五"); p1->Add(new Leaf("大三")); p->Add(p1); p->Display(1); return 0; } [html] #include <iostream> #include <string> #include <vector> using namespace std; class Company { protected: string m_strName; public: Company(string strName) { m_strName = strName; } virtual void Add(Company* c)=0; virtual void Display(int nDepth)=0; virtual void LineOfDuty()=0; }; class ConcreteCompany: public Company { private: vector<Company> m_company; public: ConcreteCompany(string strName):Company(strName){} virtual void Add(Company c) { m_company.push_back(c); } virtual void Display(int nDepth) { string strtemp; for(int i=0; i < nDepth; i++) { strtemp += "-"; } strtemp +=m_strName; cout<<strtemp<<endl; vector<Company>::iterator p=m_company.begin(); while (p!=m_company.end()) { (p)->Display(nDepth+2); p++; } } virtual void LineOfDuty() { vector<Company>::iterator p=m_company.begin(); while (p!=m_company.end()) { (p)->LineOfDuty(); p++; } } }; class HrDepartment : public Company { public: HrDepartment(string strname) : Company(strname){} virtual void Display(int nDepth) { string strtemp; for(int i = 0; i < nDepth; i++) { strtemp += "-"; } strtemp += m_strName; cout<<strtemp<<endl; } virtual void Add(Company* c) { cout<<"error"<<endl; } virtual void LineOfDuty() { cout<<m_strName<<":招聘人才"<<endl; } }; //客户端： int main() { www.atcpu.com ConcreteCompany p = new ConcreteCompany("清华大学"); p->Add(new HrDepartment("清华大学人才部")); ConcreteCompany p1 = new ConcreteCompany("数学系"); p1->Add(new HrDepartment("数学系人才部")); ConcreteCompany *p2 = new ConcreteCompany("物理系"); p2->Add(new HrDepartment("物理系人才部")); p->Add(p1); p->Add(p2); p->Display(1); p->LineOfDuty(); return 0; }