Including other idl files doesnt work

[jtroeth1]

Hello,

I have an issue with including other types in the python generated code. For example creating the two files:

TypeTest.idl

#include "OtherType.idl"

module TypeTest
{
    struct Type1
    {
        long type1_long;
    };

    struct Type2
    {
        double type2_d;
        Type1 type2_type1;
        OtherType::Type3 other_type;
    };
};

OtherType.idl:

module OtherType
{
    struct Type3
    {
        double other_type;
    };
};

Using the test code:

#!/usr/bin/python3

import fastdds
from TypeTest import TypeTest
from OtherType import OtherType

t1 = TypeTest.Type1
t1.type1_long = 1111;
print('t1', t1)
print('t1 dir', dir(t1), end='\n\n')

t2 = TypeTest.Type2
print('t2', t2)
print('t2 dir', dir(t2))

t2.type2_d = 18.0
t2.type2_type1 = t1

print('t2 d', t2.type2_d)
print('t2 t1', t2.type2_type1.type1_long)

other = OtherType.Type3
print('other', dir(other), end='\n\n')
print('t2 other', dir(t2.other_type), end='\n\n')

# This is okay
other.other_type = 10.0
print('other type', other.other_type)

#Both of these fail
t2.other_type.other_type = 10.0 #set
print('other', t2.other_type.other_type) #get

Output:

❯ ./test_types.py
t1 <class 'TypeTest.TypeTest.Type1'>
t1 dir ['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__swig_destroy__', '__weakref__', 'thisown', 'type1_long']

t2 <class 'TypeTest.TypeTest.Type2'>
t2 dir ['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__swig_destroy__', '__weakref__', 'other_type', 'thisown', 'type2_d', 'type2_type1']
t2 d 18.0
t2 t1 1111
other ['__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__swig_destroy__', '__weakref__', 'other_type', 'thisown']

t2 other ['__class__', '__delattr__', '__delete__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__get__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__isabstractmethod__', '__le__', '__lt__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__set__', '__set_name__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', 'deleter', 'fdel', 'fget', 'fset', 'getter', 'setter']

other type 10.0
Traceback (most recent call last):
  File "/home/jtroeth/software/Fast-DDS-python/fastdds_python_examples/TypesBug/./test_types.py", line 27, in <module>
    t2.other_type.other_type = 10.0 #set
AttributeError: 'property' object has no attribute 'other_type'

We can see the dir(other) is okay and has a dict method and shows a double variable "other_type". dir (t2.other_type) has no dict and is missing the double variable other_type.

Setting and getting other_type for struct "other" is okay. Setting and Getting the variable other_type via TypeTest t2 is invalid.

Is this the expected behavior?

Thanks

[jtroeth1]

Okay it looks like creating an instance of TypeTest.Type2 does not create and instance of OtherType.Type3 for the other_type variable. Setting the variable to an instance after creation works:

o = OtherType.Type3
t3 = TypeTest.Type2
t3.other_type_var = o #now and instance
t3.other_type_var = OtherType.Type3 #or now and instance

# now this value can be set/get
t3.other_type_var.other_type = 19.0
print(t2.other_type_var.other_type) 

Does it make sense that you have to set this manually on initialization?

======================================================================== Further, Why does this happen:

#!/usr/bin/python3

import fastdds
from TypeTest import TypeTest
from OtherType import OtherType


o = OtherType.Type3
t1 = TypeTest.Type2
t2 = TypeTest.Type2

t1.type2_d = 7777.0

print('a variable that is set',     t1.type2_d)
print('a variable that is not set', t2.type2_d)

Output:

a variable that is set 7777.0
a variable that is not set 7777.0