demo-connection-provider/src/main/java/com/tptj/demo/hg/connection/store/Store.java

package com.tptj.demo.hg.connection.store;

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

/**
 * @author 秃破天际
 * @version 10.0
 * Created by 秃破天际 on 2021-03-31
 * 模拟数据源
 **/
public class Store {
    private Map<String, Data> store = new HashMap<String,Data>(3);
    private static Store instance = null;
    private Store(){ }

    public boolean contains(String key){
        return store.containsKey(key);
    }

    public Data get(String key){
        return store.get(key);
    }

    private void load(){
        store.put("key1",new Data(new String[]{"k1","k2","k3"},
                new String[][]{
                        {"v11","v12","v13"},
                        {"v21","v22","v23"},
                        {"v31","v32","v33"}
                } ));
        store.put("key2",new Data(new String[]{"k4","k5"},
                new String[][]{
                        {"n11","n12"},
                        {"n21","n22"},
                        {"n31","n32"}
                } ));
        store.put("key3",new Data(new String[]{"k6","k7","k3","k8"},
                new String[][]{
                        {"x11","x12","x13","x14"},
                        {"x21","x22","x23","x24"},
                        {"x31","x32","x33","x34"}
                } ));
    }

    public static Store getInstance(){
        if( null == instance ){
            synchronized (Store.class){
                if( null == instance ){
                    instance = new Store();
                    instance.load();
                }
            }
        }
        return instance;
    }
}