java优化策略：hashMap内存初始化加载优化

 java优化策略：hashMap内存初始化加载优化

1package com.gsafety.opinion.pc.util;
2
3import java.util.HashMap;
4import java.util.List;
5import java.util.Map;
6
7import javax.annotation.PostConstruct;
8
9import org.springframework.beans.factory.annotation.Autowired;
10import org.springframework.stereotype.Component;
11
12import com.gsafety.opinion.pc.mapper.CountriesMapper;
13import com.gsafety.opinion.pc.mapper.EventTypeMapper;
14import com.gsafety.opinion.pc.mapper.LocationPlaceMapper;
15import com.gsafety.opinion.pc.po.Countries;
16import com.gsafety.opinion.pc.po.EventType;
17import com.gsafety.opinion.pc.po.LocationPlace;
18
19@Component
20public class POCacheUtils {
21    
22    public static Map<String,Countries> countriesMap = new HashMap<String,Countries>();
23    
24    public static Map<String,LocationPlace> locationPlacesMap = new HashMap<String,LocationPlace>();
25    
26    public static Map<String,EventType> eventTypeCodeMap = new HashMap<String,EventType>();
27    
28    public static Map<String,EventType> eventTypeNameMap = new HashMap<String,EventType>();
29    
30    @Autowired
31    private CountriesMapper countriesMapper;
32    
33    @Autowired
34    private LocationPlaceMapper locationPlaceMapper;
35    
36    @Autowired
37    private EventTypeMapper eventTypeMapper;
38    
39    @PostConstruct
40    public void init(){
41        List<Countries> countries=countriesMapper.queryAll();        
42        for(Countries tr:countries){
43            countriesMap.put(tr.getCode(), tr);
44            
45        }
46        List<LocationPlace> locationPlace=locationPlaceMapper.queryAll();
47        for(LocationPlace tr:locationPlace){
48            locationPlacesMap.put(tr.getCode(), tr);            
49        }
50        List<EventType> eventType=eventTypeMapper.queryAll();
51        for(EventType tr:eventType){
52            eventTypeCodeMap.put(tr.getEventCode(), tr);
53            eventTypeNameMap.put(tr.getEventName(), tr);
54        }
55        //List<EventType> EventTypeNames=eventTypeMapper.queryAllName();
56    }
57    
58
59}