VariableUpdateLog


1   package org.jbpm.context.log;
2   
3   import org.jbpm.context.exe.*;
4   
5   public abstract class VariableUpdateLog extends VariableLog {
6     
7     public VariableUpdateLog() {
8     }
9   
10    public VariableUpdateLog(VariableInstance variableInstance) {
11      super(variableInstance);
12    }
13  
14    public abstract Object   getOldValue();
15    public abstract Object   getNewValue();
16    
17    public String   toString() {
18      return "varupdate["+variableInstance+"="+getNewValue()+"]";
19    }
20  
21    public void undo() {
22      variableInstance.setValue( getOldValue() );
23    }
24  }
25

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