[APP] Save a component template with variables without triggering jobs

[blythed]

Example:

from superduperdb import Template, Variable

m = Listener(
    model=ObjectModel(
        object=lambda x: x + 2,
        identifier=Variable('model_id'),
    ),
    select=db['=collection'].find(),
    key=Variable('key')
)

# optional "info" parameter provides details about usage (depends on developer use-case)
t = Template(m, info={'key': {'type': 'str'}, 'collection': {'type': str}, 'model_id': {'type': 'str'}})

# doesn't trigger work
db.apply(t) 

listener = t(key='my_key', collection='my_collection', model_id='my_id')

# triggers work
db.apply(listener)

Key part of tech. is to "save" the component m which has variables, without polluting the db.show system. One idea is to save the m.encode() output as an artifact. This would also need to have the artifacts mentioned in the template saved also. When reloading t, should make sure that all artifacts are loaded.

[blythed]

In my experiments I tried something like this:

import dataclasses as dc

@dc.dataclass(kw_only=True)
class Template(Component):
    _artifacts = [('template', pickle_serializer)]

    template: t.Union[Component, t.Dict]

    def __post_init__(self):
        if isininstance(self.template, Component):
            self.template = self.template.encode()

    def on_create(self):
        # save all of the artifacts in self.template in the artifact store also

    def __call__(self, **kwargs):
        # set the variables of the template and return the component
        ...