How to get a JAVA Object from corba idl

Question

i am stucked on something : i have some .idl files that generates java classes from structs defined in those files like this :

struct MapServiceLayer{
        string id;
        string name;
        string parentId;
        OsTypes::StringSeq childrenIds;
    };

However I need to have a JAVA class where one of it's Attributes needs to be of type Java.Object because when i will instantiate this class, its attribute could be of different type. So i tried this :

struct MapServiceFeatureAttribute{
        OsTypes::ObjectSeq value;
    };

and this :

struct MapServiceFeatureAttribute{
            OsTypes::AnySeq value;
        };

But none of those worked. I also have heard about Unions but i am definitely not sure about how to use them. If someone knows how to get a Java.Object from idls this would be Great. If it's not possible maybe someone knows how to do with unions !

thanks in advance.

Answer 1

After some more deep research it seems that it is not possible to get a java.lang.object. However you can have a behavior that could do the trick using Any corba object :

After having generated your sources you will have a class with an attribute of type Any, this type allows you to store different types in it by using :

Any anyObj;
anyObj.insert_string(String s);
anyObj.insert_long(long l);
anyObj.insert_double(double d);

and you can obviously get the value and the chosen type by using :

String s1 = anyObj.extract_string(String s);
long l1 = anyObj.extract_long(long l);
double d1 = anyObj.extract_double(double d);

i gave the exemple for those 3 types but there is several more.