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Spring - how to change property

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1

I have a class which I can't change:

public class A 
 private String amountOfErrors;

 public String getAmountOfErrors() 
 return amountOfErrors;
 

 public void setAmountOfErrors(String amountOfErrors) 
 this.amountOfErrors = amountOfErrors;
 

bean which I can change:

<bean class="com.company.facades.A">
 <property name="amountOfErrors" type="String"/>
</bean> 

How can I change a type String to BigDecimal to call smth like that:

 A a = new A();
 a.setAmountOfErrors(BigDecimal.ZERO)

spring

share|improve this question

asked Mar 25 at 0:08

IVBORAIVBORA

285

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  no you cannot, maybe you can try like this a.setAmountOfErrors(BigDecimal.ZERO.toString()
  
  – Deadpool
  Mar 25 at 0:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Deadpool What if I added <property name="bigAmountOfErrors" type="BigDecimal"/>?
  
  – IVBORA
  Mar 25 at 0:23
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  you will get error during startup saying incompatible types
  
  – Deadpool
  Mar 25 at 0:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Deadpool Yes, true. And I need to extend class A with field bigAmountOfErrors. Maybe you know a mechanism to do this using spring?
  
  – IVBORA
  Mar 25 at 0:26
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Hi! Then why not just do that? - you wouldn't even need to change the method name. You could just provide a version of the method with the same name but that takes a BigDecimal. Is it that you can't write ANY new Java code?
  
  – Steve
  Mar 25 at 0:27
  
  

  
  
  
  

 | 
show 2 more comments

1

I have a class which I can't change:

public class A 
 private String amountOfErrors;

 public String getAmountOfErrors() 
 return amountOfErrors;
 

 public void setAmountOfErrors(String amountOfErrors) 
 this.amountOfErrors = amountOfErrors;
 

bean which I can change:

<bean class="com.company.facades.A">
 <property name="amountOfErrors" type="String"/>
</bean> 

How can I change a type String to BigDecimal to call smth like that:

 A a = new A();
 a.setAmountOfErrors(BigDecimal.ZERO)

spring

share|improve this question

asked Mar 25 at 0:08

IVBORAIVBORA

285

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  no you cannot, maybe you can try like this a.setAmountOfErrors(BigDecimal.ZERO.toString()
  
  – Deadpool
  Mar 25 at 0:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Deadpool What if I added <property name="bigAmountOfErrors" type="BigDecimal"/>?
  
  – IVBORA
  Mar 25 at 0:23
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  you will get error during startup saying incompatible types
  
  – Deadpool
  Mar 25 at 0:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Deadpool Yes, true. And I need to extend class A with field bigAmountOfErrors. Maybe you know a mechanism to do this using spring?
  
  – IVBORA
  Mar 25 at 0:26
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Hi! Then why not just do that? - you wouldn't even need to change the method name. You could just provide a version of the method with the same name but that takes a BigDecimal. Is it that you can't write ANY new Java code?
  
  – Steve
  Mar 25 at 0:27
  
  

  
  
  
  

 | 
show 2 more comments

I have a class which I can't change:

public class A 
 private String amountOfErrors;

 public String getAmountOfErrors() 
 return amountOfErrors;
 

 public void setAmountOfErrors(String amountOfErrors) 
 this.amountOfErrors = amountOfErrors;
 

bean which I can change:

<bean class="com.company.facades.A">
 <property name="amountOfErrors" type="String"/>
</bean> 

How can I change a type String to BigDecimal to call smth like that:

 A a = new A();
 a.setAmountOfErrors(BigDecimal.ZERO)

spring

share|improve this question

asked Mar 25 at 0:08

IVBORAIVBORA

285

public class A 
 private String amountOfErrors;

 public String getAmountOfErrors() 
 return amountOfErrors;
 

 public void setAmountOfErrors(String amountOfErrors) 
 this.amountOfErrors = amountOfErrors;
 

<bean class="com.company.facades.A">
 <property name="amountOfErrors" type="String"/>
</bean> 

 A a = new A();
 a.setAmountOfErrors(BigDecimal.ZERO)

share|improve this question

asked Mar 25 at 0:08

IVBORAIVBORA

285

share|improve this question

asked Mar 25 at 0:08

IVBORAIVBORA

285

asked Mar 25 at 0:08

IVBORAIVBORA

285

asked Mar 25 at 0:08

IVBORAIVBORA

285

1 Answer
1

active

oldest

votes

1

It depends somewhat on how you're injecting the bean. But basically just:

public class B extends A 
 public void setAmountOfErrors(BigDecimal amountOfErrors) 
 this.amountOfErrors = amountOfErrors.toString();
 


<bean class="com.company.whatever.B">
 <property name="amountOfErrors" type="BigDecimal"/>
</bean> 

I'm actually not sure what you're trying to do with the property on either A or B. The main point is that you can create a B, but Spring will know it's an A and will inject it as an A where necessary.

But if you want to call the BigDecimal version of the setter from Java, you'll need to either inject it as a B or cast an injected A (that's really a B) to a B.

share|improve this answer

answered Mar 25 at 0:32

SteveSteve

4,1381728

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Does this make sense? What more can I do to try to help?
  
  – Steve
  Mar 25 at 0:35
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes, it makes sense. Thanks!
  
  – IVBORA
  Mar 25 at 0:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Glad I could help. I didn't think much about your line: <property name="amountOfErrors" type="String"/>. Thinking about it more, I realized that I didn't know the purpose of this line, and I don't think I've ever used one quite like this in my 10+ years of using Spring. I've used the 'value' and 'ref' attributes, but never 'type'. What do you think the purpose of this is? I'm not saying I know it has no purpose. I just can't think what that purpose is. Maybe you can teach me something :) - I also did some Googling, and couldn't find such a usage.
  
  – Steve
  Mar 25 at 1:05
  
  

  
  
  
  

add a comment | 

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1

It depends somewhat on how you're injecting the bean. But basically just:

public class B extends A 
 public void setAmountOfErrors(BigDecimal amountOfErrors) 
 this.amountOfErrors = amountOfErrors.toString();
 


<bean class="com.company.whatever.B">
 <property name="amountOfErrors" type="BigDecimal"/>
</bean> 

I'm actually not sure what you're trying to do with the property on either A or B. The main point is that you can create a B, but Spring will know it's an A and will inject it as an A where necessary.

But if you want to call the BigDecimal version of the setter from Java, you'll need to either inject it as a B or cast an injected A (that's really a B) to a B.

share|improve this answer

answered Mar 25 at 0:32

SteveSteve

4,1381728

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Does this make sense? What more can I do to try to help?
  
  – Steve
  Mar 25 at 0:35
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes, it makes sense. Thanks!
  
  – IVBORA
  Mar 25 at 0:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Glad I could help. I didn't think much about your line: <property name="amountOfErrors" type="String"/>. Thinking about it more, I realized that I didn't know the purpose of this line, and I don't think I've ever used one quite like this in my 10+ years of using Spring. I've used the 'value' and 'ref' attributes, but never 'type'. What do you think the purpose of this is? I'm not saying I know it has no purpose. I just can't think what that purpose is. Maybe you can teach me something :) - I also did some Googling, and couldn't find such a usage.
  
  – Steve
  Mar 25 at 1:05
  
  

  
  
  
  

add a comment | 

1

It depends somewhat on how you're injecting the bean. But basically just:

public class B extends A 
 public void setAmountOfErrors(BigDecimal amountOfErrors) 
 this.amountOfErrors = amountOfErrors.toString();
 


<bean class="com.company.whatever.B">
 <property name="amountOfErrors" type="BigDecimal"/>
</bean> 

I'm actually not sure what you're trying to do with the property on either A or B. The main point is that you can create a B, but Spring will know it's an A and will inject it as an A where necessary.

But if you want to call the BigDecimal version of the setter from Java, you'll need to either inject it as a B or cast an injected A (that's really a B) to a B.

share|improve this answer

answered Mar 25 at 0:32

SteveSteve

4,1381728

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Does this make sense? What more can I do to try to help?
  
  – Steve
  Mar 25 at 0:35
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes, it makes sense. Thanks!
  
  – IVBORA
  Mar 25 at 0:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Glad I could help. I didn't think much about your line: <property name="amountOfErrors" type="String"/>. Thinking about it more, I realized that I didn't know the purpose of this line, and I don't think I've ever used one quite like this in my 10+ years of using Spring. I've used the 'value' and 'ref' attributes, but never 'type'. What do you think the purpose of this is? I'm not saying I know it has no purpose. I just can't think what that purpose is. Maybe you can teach me something :) - I also did some Googling, and couldn't find such a usage.
  
  – Steve
  Mar 25 at 1:05
  
  

  
  
  
  

add a comment | 

It depends somewhat on how you're injecting the bean. But basically just:

public class B extends A 
 public void setAmountOfErrors(BigDecimal amountOfErrors) 
 this.amountOfErrors = amountOfErrors.toString();
 


<bean class="com.company.whatever.B">
 <property name="amountOfErrors" type="BigDecimal"/>
</bean> 

I'm actually not sure what you're trying to do with the property on either A or B. The main point is that you can create a B, but Spring will know it's an A and will inject it as an A where necessary.

But if you want to call the BigDecimal version of the setter from Java, you'll need to either inject it as a B or cast an injected A (that's really a B) to a B.

share|improve this answer

answered Mar 25 at 0:32

SteveSteve

4,1381728

public class B extends A 
 public void setAmountOfErrors(BigDecimal amountOfErrors) 
 this.amountOfErrors = amountOfErrors.toString();
 


<bean class="com.company.whatever.B">
 <property name="amountOfErrors" type="BigDecimal"/>
</bean> 

share|improve this answer

answered Mar 25 at 0:32

SteveSteve

4,1381728

answered Mar 25 at 0:32

SteveSteve

4,1381728

answered Mar 25 at 0:32

SteveSteve

4,1381728