设计模式之工厂
普通工厂类图:
java语言实现:
package com.mysql.demo.simpleFactory;
/**
* 职责
* @author Mr Huang
*/
public interface Dutys {
/**
* 做什么
* @param o 项目
*/
public void doWhat(Object o);
/**
* 说什么
* @param o 项目
*/
public void sayWhat(Object o);
}
package com.mysql.demo.simpleFactory;
/**
* 待遇
* @author Mr Huang
*/
public interface Treatment {
/**
* 环境待遇
* @param o 项目
* @return 待遇
*/
public String environmentalScience(Object o);
/**
* 奖金
* @param o 项目
* @return 奖金
*/
public String bonus(Object o);
}
package com.mysql.demo.simpleFactory;
/**
* 工程部
* @author Mr Huang
*/
public class EngineeringDepartment implements Dutys {
@Override
public void doWhat(Object o) {
}
@Override
public void sayWhat(Object o) {
}
}
package com.mysql.demo.simpleFactory;
/**
* 方案部
* @author Mr Huang
*/
public class ProgramDepartment implements Dutys {
@Override
public void doWhat(Object o) {
}
@Override
public void sayWhat(Object o) {
}
}
package com.mysql.demo.simpleFactory;
/**
* 研发部
* @author Mr Huang
*/
public class ResearchAndDevelopmentDepartment implements Dutys,Treatment {
@Override
public void doWhat(Object o) {
}
@Override
public void sayWhat(Object o) {
}
@Override
public String environmentalScience(Object o) {
return null;
}
@Override
public String bonus(Object o) {
return null;
}
}
package com.mysql.demo.simpleFactory;
/**
* 公司工厂
* @author Mr Huang
*/
public class CompanyFactory {
public static final int TYPE_RANDDDEPARTMENT =0;
public static final int TYPE_PROGRAMDEPARTMENT = 1;
public static final int TYPE_ENGINEERINGDEPARTMENT = 2;
/**
* 创建职责
* @param type 部门
* @return 职责
*/
public static Dutys createDutys(int type){
switch (type){
case TYPE_ENGINEERINGDEPARTMENT:
return new EngineeringDepartment();
case TYPE_PROGRAMDEPARTMENT:
return new ProgramDepartment();
case TYPE_RANDDDEPARTMENT:
return new ResearchAndDevelopmentDepartment();
}
return null;
}
/**
* 创建奖励
* @param type 部门
* @return 奖励
*/
public static Treatment createTreatment(int type){
switch (type){
case TYPE_ENGINEERINGDEPARTMENT:
return null;
case TYPE_PROGRAMDEPARTMENT:
return null;
case TYPE_RANDDDEPARTMENT:
return new ResearchAndDevelopmentDepartment();
}
return null;
}
}
方法或者抽象工厂类图:
java语言实现:
package com.mysql.demo.functionFactory;
/**
* 职责
* @author Mr Huang
*/
public interface Dutys {
/**
* 做什么
* @param o 项目
*/
public void doWhat(Object o);
/**
* 说什么
* @param o 项目
*/
public void sayWhat(Object o);
}
package com.mysql.demo.functionFactory;
/**
* 待遇
* @author Mr Huang
*/
public interface Treatment {
/**
* 环境待遇
* @param o 项目
* @return 待遇
*/
public String environmentalScience(Object o);
/**
* 奖金
* @param o 项目
* @return 奖金
*/
public String bonus(Object o);
}
package com.mysql.demo.functionFactory;
/**
* 公司工厂
* @author Mr Huang
*/
public abstract class ICompanyFactory {
/**
* 创建职责对象(这个对象是所有部门工厂公有的)
* @return 职责对象
*/
public abstract Dutys createDutys();
/**
* 创建待遇对象(这个对象是所有部门工厂共有的)
* @return 待遇对象
*/
public abstract Treatment createTreatment();
}
package com.mysql.demo.functionFactory;
/**
* 工程部职责
* @author Mr Huang
*/
public class EngineeringDepartment implements Dutys {
@Override
public void doWhat(Object o) {
}
@Override
public void sayWhat(Object o) {
}
}
package com.mysql.demo.functionFactory;
/**
* 工程部工厂
* @author Mr Huang
*/
public class EngineeringDepartmentFactory extends ICompanyFactory {
@Override
public Dutys createDutys() {
return new EngineeringDepartment();
}
@Override
public Treatment createTreatment() {
return null;
}
}
package com.mysql.demo.functionFactory;
/**
* 方案部职责
* @author Mr Huang
*/
public class ProgramDepartment implements Dutys {
@Override
public void doWhat(Object o) {
}
@Override
public void sayWhat(Object o) {
}
}
package com.mysql.demo.functionFactory;
/**
* 方案部工厂
* @author Mr Huang
*/
public class ProgramDepartmentFactory extends ICompanyFactory {
@Override
public Dutys createDutys() {
return new ProgramDepartment();
}
@Override
public Treatment createTreatment() {
return null;
}
}
package com.mysql.demo.functionFactory;
/**
* 研发部职责、待遇
* @author Mr Huang
*/
public class ResearchAndDevelopmentDepartment implements Dutys, Treatment {
@Override
public void doWhat(Object o) {
}
@Override
public void sayWhat(Object o) {
}
@Override
public String environmentalScience(Object o) {
return null;
}
@Override
public String bonus(Object o) {
return null;
}
}
package com.mysql.demo.functionFactory;
/**
* 研发部工厂
* @author Mr Huang
*/
public class ResearchAndDevelopmentDepartmentFactory extends ICompanyFactory {
@Override
public Dutys createDutys() {
return new ResearchAndDevelopmentDepartment();
}
@Override
public Treatment createTreatment() {
return new ResearchAndDevelopmentDepartment();
}
}
以上工厂设计方法都有优缺点；