我目前有下表表示在休眠中映射的总线网络，从基于 Spring MVC 的公交路线规划器访问我试图让我的路线规划器应用程序执行得更快，我将所有上述表格加载到列表中以执行路线规划器逻辑.
如果有人对如何加快我的表现有任何想法或对另一种方法来解决处理大量数据的问题有任何建议，我将不胜感激
Coordinate Connections Table (INT,INT,INT)( Containing 50,000 Coordinate Connections)
ID, FROMCOORDID, TOCOORDID
1 1 2
2 1 17
3 1 63
4 1 64
5 1 65
6 1 95
Coordinate Table (INT,DECIMAL, DECIMAL) (Containing 4700 Coordinates)
ID , LAT, LNG
0 59.352669 -7.264341
1 59.352669 -7.264341
2 59.350012 -7.260653
3 59.337585 -7.189798
4 59.339221 -7.193582
5 59.341408 -7.205888
Bus Stop Table (INT, INT, INT)(Containing 15000 Stops)
StopID RouteID COORDINATEID
1000100001 100 17
1000100002 100 18
1000100003 100 19
1000100004 100 20
1000100005 100 21
1000100006 100 22
1000100007 100 23
这是从每个表中加载所有数据所需的时间：
stop.findAll = 148ms, stops.size: 15670
Hibernate: select coordinate0_.COORDINATEID as COORDINA1_2_, coordinate0_.LAT as LAT2_, coordinate0_.LNG as LNG2_ from COORDINATES coordinate0_
coord.findAll = 51ms , coordinates.size: 4704
Hibernate: select coordconne0_.COORDCONNECTIONID as COORDCON1_3_, coordconne0_.DISTANCE as DISTANCE3_, coordconne0_.FROMCOORDID as FROMCOOR3_3_, coordconne0_.TOCOORDID as TOCOORDID3_ from COORDCONNECTIONS coordconne0_
coordinateConnectionDao.findAll = 238ms ; coordConnectioninates.size:48132
休眠注解
@Entity
@Table(name = "STOPS")
public class Stop implements Serializable {
@Id
@GeneratedValue
@Column(name = "COORDINATEID")
private Integer CoordinateID;
@Column(name = "LAT")
private double latitude;
@Column(name = "LNG")
private double longitude;
}
@Table(name = "COORDINATES")
public class Coordinate {
@Id
@GeneratedValue
@Column(name = "COORDINATEID")
private Integer CoordinateID;
@Column(name = "LAT")
private double latitude;
@Column(name = "LNG")
private double longitude;
}
@Entity
@Table(name = "COORDCONNECTIONS")
public class CoordConnection {
@Id
@GeneratedValue
@Column(name = "COORDCONNECTIONID")
private Integer CoordinateID;
/**
* From Coordinate_id value
*/
@Column(name = "FROMCOORDID", nullable = false)
private int fromCoordID;
/**
* To Coordinate_id value
*/
@Column(name = "TOCOORDID", nullable = false)
private int toCoordID;
//private Coordinate toCoordID;
}
HashMap -> CoodinateID 到坐标代码
private void setupCoordinateIDToCoordinate() {
HashMap<Integer, Coordinate> coordinateIDToCoordinate = new HashMap<Integer, Coordinate>();
List<Coordinate> coordinates = coordinateDao.findAll();
Iterator <Coordinate> itr = coordinates.iterator();
Coordinate c;
while(itr.hasNext()) {
c = itr.next();
coordinateIDToCoordinate.put(c.getCoordinateID(),c);
}
}