Fix: object_default/schema

[younesdessia]

• What kind of changes does this PR introduce?

• Bug fix
• new features
• performance
• docs update

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

• Yes:
• No

• Other information:

[GhislainJ]

We need more context about this, as None as default value should directly happen with objects. We should normally have an Optional schema

[younesdessia]

@GhislainJ
here is a case of reproduction

from typing import Optional
from dessia_common.core import DessiaObject


class ObjectTest(DessiaObject):

    def __init__(self, name: str = "", measure: float = 1.1):
        self.measure = measure
        DessiaObject.__init__(self, name=name)


class InstantiateObject(DessiaObject):

    def __init__(self, name: str = ""):
        DessiaObject.__init__(self, name=name)

    def compute(self, my_object: Optional[ObjectTest] = None):
        return 404

from dessia_common.typings import MethodType
from dessia_common.workflow.blocks import InstantiateModel, ModelMethod
from dessia_common.workflow.core import Pipe, Workflow
from navalgroup_custom.dev_dc import InstantiateObject

block_0 = InstantiateModel(model_class=InstantiateObject, name="InstantateObject")
block_1 = ModelMethod(method_type=MethodType(InstantiateObject, 'compute'), name="compute")
blocks = [block_0, block_1]


pipe_1 = Pipe(block_0.outputs[0], block_1.inputs[0])

workflow = Workflow(blocks, [pipe_1], output=block_1.outputs[0], name="test")

[younesdessia]

Hi @GhislainJ

I checked with debug mode, for me there is no other problem except in the method object_default, and the fix is correct.

to reprduce the issue you can just do this:
workflow.method_schemas

[younesdessia]

Another fix, replace None value of default_value with UNDEFINED in SchemaAttribute class:

[GhislainJ]

Approved but adding tests are needed to merge

[GhislainJ]

Tests using you simplified repro case should be added

[younesdessia]

Done !