Add abstract DatatokenBase.

READMEs/main-flow.md

@@ -133,10 +133,10 @@ data_nft = DataNFT(config, data_nft_address)
 It's similar for Datatokens. In Python:
 
 ```console
-from ocean_lib.models.datatoken import Datatoken
+from ocean_lib.models.datatoken_base import DatatokenBase
 config = <like shown elsewhere in READMEs>
 datatoken_address = <what you wrote down previously>
-datatoken = Datatoken(config, datatoken_address)
+datatoken = DatatokenBase.get_typed(config, datatoken_address)
 ```
 
 ### Data NFT Interface
@@ -224,7 +224,7 @@ url_file = UrlFile(
 )
 
 # Publish data asset
-from ocean_lib.models.datatoken import DatatokenArguments
+from ocean_lib.models.datatoken_base import DatatokenArguments
 _, _, ddo = ocean.assets.create(
     metadata,
     {"from": alice},

ocean_lib/assets/test/test_asset_downloader.py

@@ -13,7 +13,7 @@
 from ocean_lib.assets.asset_downloader import download_asset_files, is_consumable
 from ocean_lib.assets.ddo import DDO
 from ocean_lib.data_provider.data_service_provider import DataServiceProvider
-from ocean_lib.models.datatoken import TokenFeeInfo
+from ocean_lib.models.datatoken_base import TokenFeeInfo
 from ocean_lib.ocean.util import to_wei
 from ocean_lib.services.service import Service
 from tests.resources.ddo_helpers import (

ocean_lib/models/data_nft.py

@@ -12,7 +12,7 @@
 from enforce_typing import enforce_types
 from web3 import Web3
 
-from ocean_lib.models.datatoken import Datatoken, DatatokenArguments
+from ocean_lib.models.datatoken_base import DatatokenArguments, DatatokenBase
 from ocean_lib.ocean.util import (
     create_checksum,
     get_address_of_type,
@@ -23,7 +23,6 @@
 from ocean_lib.web3_internal.contract_base import ContractBase
 from ocean_lib.web3_internal.utils import check_network
 
-
 """
 def addManager(address: str) -> None:
     add a manager role to the address provided as a parameter
@@ -290,7 +289,7 @@ def to_byte(self):
 class DataNFT(ContractBase):
     CONTRACT_NAME = "ERC721Template"
 
-    def create_datatoken(self, tx_dict, *args, **kwargs) -> Datatoken:
+    def create_datatoken(self, tx_dict, *args, **kwargs) -> DatatokenBase:
         datatoken_args = get_args_object(args, kwargs, DatatokenArguments)
 
         return datatoken_args.create_datatoken(self, tx_dict)

ocean_lib/models/data_nft_factory.py

@@ -8,15 +8,13 @@
 from web3.exceptions import BadFunctionCallOutput
 
 from ocean_lib.models.data_nft import DataNFT, DataNFTArguments
-from ocean_lib.models.datatoken import Datatoken
-from ocean_lib.models.datatoken_enterprise import DatatokenEnterprise
+from ocean_lib.models.datatoken_base import DatatokenBase
 from ocean_lib.models.erc721_token_factory_base import ERC721TokenFactoryBase
 from ocean_lib.models.fixed_rate_exchange import FixedRateExchange, OneExchange
 from ocean_lib.ocean.util import get_address_of_type, get_args_object, get_from_address
 from ocean_lib.structures.abi_tuples import MetadataProof, OrderData
 from ocean_lib.web3_internal.contract_base import ContractBase
 
-
 """
 def balance() -> int:
     get token balance
@@ -164,11 +162,7 @@ def create_with_erc20(
 
         registered_token_event = receipt.events["TokenCreated"]
         datatoken_address = registered_token_event["newTokenAddress"]
-        datatoken = (
-            Datatoken(self.config_dict, datatoken_address)
-            if datatoken_args.template_index == 1
-            else DatatokenEnterprise(self.config_dict, datatoken_address)
-        )
+        datatoken = DatatokenBase.get_typed(self.config_dict, datatoken_address)
 
         return data_nft_token, datatoken
 
@@ -221,11 +215,7 @@ def create_with_erc20_and_fixed_rate(
 
         registered_token_event = receipt.events["TokenCreated"]
         datatoken_address = registered_token_event["newTokenAddress"]
-        datatoken = (
-            Datatoken(self.config_dict, datatoken_address)
-            if datatoken_args.template_index == 1
-            else DatatokenEnterprise(self.config_dict, datatoken_address)
-        )
+        datatoken = DatatokenBase.get_typed(self.config_dict, datatoken_address)
 
         registered_fixed_rate_event = receipt.events["NewFixedRate"]
         exchange_id = registered_fixed_rate_event["exchangeId"]
@@ -285,11 +275,7 @@ def create_with_erc20_and_dispenser(
 
         registered_token_event = receipt.events["TokenCreated"]
         datatoken_address = registered_token_event["newTokenAddress"]
-        datatoken = (
-            Datatoken(self.config_dict, datatoken_address)
-            if datatoken_args.template_index == 1
-            else DatatokenEnterprise(self.config_dict, datatoken_address)
-        )
+        datatoken = DatatokenBase.get_typed(self.config_dict, datatoken_address)
 
         registered_dispenser_event = receipt.events["DispenserCreated"]
         assert registered_dispenser_event["datatokenAddress"] == datatoken_address
@@ -344,7 +330,7 @@ def search_exchange_by_datatoken(
         datatoken: str,
         exchange_owner: Optional[str] = None,
     ) -> list:
-        datatoken_contract = Datatoken(self.config_dict, datatoken)
+        datatoken_contract = DatatokenBase.get_typed(self.config_dict, datatoken)
         exchange_addresses_and_ids = datatoken_contract.getFixedRates()
         return (
             exchange_addresses_and_ids