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Multiple Root Name Asset ​

Scene description structure ​

json
{
    "ASY_MacMoTower_1:EL_BuildingMacMoTower_1": {},
    "ASY_MacMoTower_1:EL_MacMoScaffolding_1": {},
    "ASY_MacMoTower_1:EL_RooftopA_1": {},
    "ASY_MacMoTower_1:PR_MoballoonStructure_1": {},
    "ASY_MacMoTower_1:PR_TrashCanElevator_1": {},
}

When we want to add same asset in multiple time, we need to avoid namespace conflict.

How to do: ​

Start by extracting all root namespaces and put it in a dictionary.

python
root_namespace_dict = {}
    for asset_namespace in asset_descriptions.keys():
        namespace_root = asset_namespace.split(':')[0]
        if namespace_root not in root_namespace_dict:
            root_namespace_dict[namespace_root] = namespace_root

Then we need to find the next available root namespace, for each root_asset key.

python
for namespace_root in root_namespace_dict.keys():
    # 2 because if we are here. It means that we already have one asset with the same namespace_root
    next_number = 2
    new_namespace_root = namespace_root
    while pmc.namespace(exists=new_namespace_root):
        new_namespace_root = re.sub(r'\d*$', '', namespace_root)
        new_namespace_root = '{}{}'.format(new_namespace_root, next_number)
        next_number += 1
    root_namespace_dict[namespace_root] = new_namespace_root

Then when we will import the asset, we will replace the root namespace by the new one.

python
 # get current namespace_root and asset_name
namespace_root = asset_namespace.split(':')[0]
asset_name=':'.join(asset_namespace.split(':')[1::])

# get the new namespace_root from the root_namespace_dict, and fallback to the current namespace_root if not found
new_namespace_root = root_namespace_dict.get(namespace_root, namespace_root)

# and update the asset_namespace with the new namespace_root
asset_namespace = '{}:{}'.format(new_namespace_root, asset_name)

Full code ​

python
import re

# todo remove pymel dependency
import pymel.core as pmc


our_scene_desc = {
    "asset_descriptions" :{
        "asset_root_1:asset_namespace_1": {},
        "asset_root_1:other_asset_namespace_1": {},
        "asset_root_1:another_asset_namespace_1": {},
        "asset_root_1:again_another_asset_namespace_1": {},
        "asset_root_1:and_again_another_asset_namespace_1": {},
    }
}

asset_descriptions = our_scene_desc.data.get('asset_descriptions', {})

# we need to prepare ours namespace to avoid conflicts
root_namespace_dict = {}
for asset_namespace in asset_descriptions.keys():
    namespace_root = asset_namespace.split(':')[0]
    if namespace_root not in root_namespace_dict:
        root_namespace_dict[namespace_root] = namespace_root

# we need to find and increment the namespace_root of all ours namespace_root
for namespace_root in root_namespace_dict.keys():
    all_grp_root_asset = '{}:{}'.format(namespace_root, consts_values.SCENE_ROOT_NAME)

    # 2 because if we are here. It means that we already have one asset with the same namespace_root
    next_number = 2
    new_namespace_root = namespace_root
    while pmc.namespace(exists=new_namespace_root):
        new_namespace_root = re.sub(r'\d*$', '', namespace_root)
        new_namespace_root = '{}{}'.format(new_namespace_root, next_number)
        next_number += 1
    root_namespace_dict[namespace_root] = new_namespace_root

for asset_namespace, asset_info in asset_descriptions.items():
    # ... asset stuff and internal rules stuff
    namespace_root = asset_namespace.split(':')[0]
    asset_name=':'.join(asset_namespace.split(':')[1::])

    # get the new namespace_root from the root_namespace_dict, and fallback to the current namespace_root if not found
    new_namespace_root = root_namespace_dict.get(namespace_root, namespace_root)
    
    # and update the asset_namespace with the new namespace_root
    asset_namespace = '{}:{}'.format(new_namespace_root, asset_name)

    # ... load_asset(
    #    ...
    #    asset_namespace=asset_namespace    
    #)

not efficient but it works.

Error before hotfix ​

Error

After this hotfix: ​

Hotfix result