SessionRowLocker


1   package com.daffodilwoods.daffodildb.utils;
2   
3   import java.util.TreeSet  ;
4   import com.daffodilwoods.daffodildb.utils.comparator.CKbwbDpnqbsbups;
5   import com.daffodilwoods.database.resource.DException;
6   
7   
8   public class SessionRowLocker {
9   
10     TreeSet   rowMap ;
11  
12     public SessionRowLocker() {
13        rowMap = new TreeSet  (new CKbwbDpnqbsbups());
14     }
15  
16     public void lockRow(Object   Id) throws DException{
17        synchronized (this){
18           if(rowMap.contains(Id)){
19              throw new DException("DSE879", (Object  [])null);
20           }
21           rowMap.add(Id);
22        }
23     }
24  
25     public void unLockRow(Object   Id) throws DException{
26        synchronized (this){
27           rowMap.remove(Id);
28        }
29     }
30  
31  
32  
33  
34  
35  
36  
37  }
38

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