如何将默认值设置为GWT AutoBean？ [英] How to set default value to a GWT AutoBean?

问题描述

$ b Example.class：

  public static class示例实现Serializable {
 public Example2 example2 = new Example2（）; 
 public static BigDecimal calc（BigDecimal dec）{
 return dec！= null？ dec：BigDecimal.ZERO; 
} 
 public static class Example2实现Serializable {
 public BigDecimal value1 = BigDecimal.ZERO; 
 public BigDecimal value2 = BigDecimal.ZERO; 
 public BigDecimal getSum（）{
 return calc（value1）.add（calc（value2））; 
 
 
 
 
 $ b 
  AutoBean示例：  
 
 
  public inteface示例{
 
 @PropertyName（example2）
 public Example2 getExample2（）; 
 
 BigDecimal calc（BigDecimal dec）; 
} 
  
我尝试这样做 
 
 
  AutoBean Example2：  
 
 
  public interface Example2 {
 @PropertyName（ value1）
 public BigDecimal getValue1（）; 
 
 @PropertyName（value2）
 public BigDecimal getValue2（）; 
 
 BigDecimal getSum（）; 
} 
  
还有 Example2Category  。
 
 
但是当我尝试获取value1或value2时，我有一个错误： 
 
 
 
 
 TypeError：无法读取null的属性
 
我认为这是因为没有像它们的Class表示那样的初始化值。我尝试这个解决方案，但似乎没有工作。
 
 
 
那么我如何使用init值来表示我的Example2类中的AutoBean？ 
 
解决方案
看起来这是一个BigDecimal问题。对我来说，我将服务器值更改为Double，现在可以工作。
 
 
 
请参阅 Post 。
 
I have a Class that i wanted to generate his AutoBean.

Example.class :
   public static class Example implements Serializable {
       public Example2 example2 = new Example2();
       public static BigDecimal calc(BigDecimal dec){
          return dec != null ? dec: BigDecimal.ZERO;
       }
       public static class Example2 implements Serializable {
         public BigDecimal value1 = BigDecimal.ZERO;
         public BigDecimal value2 = BigDecimal.ZERO;
         public BigDecimal getSum(){
            return calc(value1).add(calc(value2));
         }
       }
   }
AutoBean Example:
public inteface Example {

  @PropertyName("example2")
  public Example2 getExample2();

  BigDecimal calc(BigDecimal dec);
}
I try to do this 

AutoBean Example2 :
public interface Example2 {
   @PropertyName("value1")
   public BigDecimal getValue1();

   @PropertyName("value2")
   public BigDecimal getValue2();

   BigDecimal getSum();
}
There is also Example2Category where the function is implement.

but when i try to get the value1 or value2 i have an Error : 

  
TypeError: Cannot read property of null
i think this happend because there is no initialized values like into their Class representation. I try this solution but dont seems to work.

So How can I represent the AutoBean from my Example2 Class with init values?
解决方案
It seems like it is a BigDecimal issues. For me i change the Server Value to Double and it work now.

see this Post.

                        
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