第一次结对作业3.14

package com.Dao;

import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.Map;

public class Station {
private String name; //地铁站名称，假设具备唯一性
public Station prev; //本站在lineNo线上面的前一个站
public Station next; //本站在lineNo线上面的后一个站

//本站到某一个目标站(key)所经过的所有站集合(value)，保持前后顺序
private Map<Station,LinkedHashSet<Station>> orderSetMap = new HashMap<Station,LinkedHashSet<Station>>();

public Station (String name){
this.name = name;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public LinkedHashSet<Station> getAllPassedStations(Station station) {
if(orderSetMap.get(station) == null) {
LinkedHashSet<Station> set = new LinkedHashSet<Station>();
set.add(this);
orderSetMap.put(station, set);
}
return orderSetMap.get(station);
}

public Map<Station, LinkedHashSet<Station>> getOrderSetMap() {
return orderSetMap;
}

@Override
public boolean equals(Object obj) {
if(this == obj){
return true;
}
else if(obj instanceof Station) {
Station s = (Station) obj;
if(s.getName().equals(this.getName())) {
return true;
}
else {
return false;
}
}
else {
return false;
}
}

@Override
public int hashCode() {
return this.getName().hashCode();
}

}