Imagine we have a bean implementation which involves property usage, specified in switchyard.xml component/composite properties.

It looks like this at the moment:

@Service(SomeService.class)
public class SomeServiceImpl implements SomeService {

     @Property(name = "string-property")
     String stringProperty;

     @Property(name = "int-property")
     String intProperty; //could be only String, but is integer semantically!

     public void someServiceMethod() {
          // there we should do
          int intPropValue = 0;
         try {
               intPropValue = Integer.parseInt(intProperty);
          } catch (Throwable t) {
               intPropValue = SOME_DEFAULT_FOR_EXAMPLE;
          }
     }
}

This is not a good way, because properties are set only while deployment, but should be parsed (integer is simple examle, but there could be more complex) any time service is invoked.

I tried to achieve reading properties upon deployment via @PostConstruct

@Service(SomeService.class)
public class SomeServiceImpl implements SomeService {
     @Property(name = "string-property")
     String stringProperty;

     @Property(name = "int-property")
     String intProperty; //could be only String, but is integer semantically!
     int intPropValue;

     
     @PostConstruct
     void init() {
         try {
               intPropValue = Integer.parseInt(intProperty);
          } catch (Throwable t) {
               intPropValue = SOME_DEFAULT_FOR_EXAMPLE;
          }
     }

     public void someServiceMethod() {
          //just use intPropValue
     }
}

But no success, because it seems like they are injected after @PostConstruct.

So, the questions are:

1. Why not inject properties before @PostConstruct? They are not changing while bean is being invoked.

2. Are there any methods of extracting implementation configuration parameters anywhere but properties supported internally in SY?

Now I resolve this issue by using code:

@Service(SomeService.class)
public class SomeServiceImpl implements SomeService {


     @Property(name = "string-property")
     String stringProperty;


     @Property(name = "int-property")
     String intProperty; //could be only String, but is integer semantically!
   
  int intPropValue;
   
  private boolean init = false;
   
  private void init() {     
         try {
               intPropValue = Integer.parseInt(intProperty);
          } catch (Throwable t) {
               intPropValue = SOME_DEFAULT_FOR_EXAMPLE;
          }
        init = true;
  }


     public void someServiceMethod() {
      if (!init) {
            init()
       }
     }
}