dev 契约锁

P15GEN2\59518

2024-05-29 d4210c7c4b04abde20037ea8aa0f54ef8a2649aa

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package foundation.state;
 
import foundation.dao.preload.Bucket;
 
public class StatesBucket extends Bucket<States> {
 
    public static StatesBucket instance;
    
    private StatesBucket() {
    }
    
    public static synchronized StatesBucket getInstance() {
        if (instance == null) {
            instance = new StatesBucket();
        }
        
        return instance;
    }
 
    public void loadOneState(State state) {
        String category = state.getCategoryCode();
        
        States states = getCachedOne(category);
        
        if (states == null) {
            states = new States(category);
            loadOne(category, states);
        }
        
        states.loadOne(state);
    }
    
}