Load() doesn't work without default or Optional

[katarinasupe]

It would be great that the load() method works if we add only one property upon which object in Memgraph is found.

For example, let's say we have defined Stream class like this:

class Stream(Node, labels={"User", "Stream"}):
    name: str = Field(index=True, unique=True, db=memgraph, label="User")
    id: str = Field(index=True, unique=True, db=memgraph)
    url: str = Field()
    followers: int = Field()
    createdAt: str = Field()
    totalViewCount: int = Field()
    description: str = Field()

Now, let's suppose I want to find a streamer based on its id (which is unique). I expect that stream = Stream(id="7").load(db=memgraph) returns Stream whose id is "7". That does not work, because it's expected that I give value for all properties of class Stream. This can be solved by adding default value ("") to each property, or by using Optional for now.

[MasterMedo]

I'm thinking we could create a class PartialNode and PartialRelationship that would be used for this purpose: loading real data into a user defined class.

[MasterMedo]

Hm, after giving it some thought, we don't need to create anything. The class Node should work for this purpose.

stream = memgraph.load_node(Node(
    id="7",
    _label="Stream"
))

This will return an instance of Stream. If you were to do a Node(...).load(db=memgraph) you would have gotten an instance of Node.

I think this is plenty good for this use-case.