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80 lines
3.3 KiB
Python
80 lines
3.3 KiB
Python
''' Models: Change propagation facade - managing all changes in OSS. '''
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from typing import Optional
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from apps.library.models import LibraryItem, LibraryItemType
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from apps.rsform.models import Constituenta, RSFormCached
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from .OperationSchemaCached import CstSubstitution, OperationSchemaCached
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def _get_oss_hosts(schemaID: int) -> list[LibraryItem]:
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''' Get all hosts for LibraryItem. '''
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return list(LibraryItem.objects.filter(operations__result_id=schemaID).only('pk').distinct())
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class PropagationFacade:
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''' Change propagation API. '''
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@staticmethod
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def after_create_cst(source: RSFormCached, new_cst: list[Constituenta],
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exclude: Optional[list[int]] = None) -> None:
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''' Trigger cascade resolutions when new constituenta is created. '''
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hosts = _get_oss_hosts(source.model.pk)
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for host in hosts:
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if exclude is None or host.pk not in exclude:
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OperationSchemaCached(host).after_create_cst(source, new_cst)
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@staticmethod
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def after_change_cst_type(target: Constituenta, exclude: Optional[list[int]] = None) -> None:
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''' Trigger cascade resolutions when constituenta type is changed. '''
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hosts = _get_oss_hosts(target.schema.pk)
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for host in hosts:
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if exclude is None or host.pk not in exclude:
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OperationSchemaCached(host).after_change_cst_type(target)
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@staticmethod
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def after_update_cst(
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source: RSFormCached,
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target: Constituenta,
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data: dict,
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old_data: dict,
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exclude: Optional[list[int]] = None
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) -> None:
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''' Trigger cascade resolutions when constituenta data is changed. '''
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hosts = _get_oss_hosts(source.model.pk)
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for host in hosts:
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if exclude is None or host.pk not in exclude:
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OperationSchemaCached(host).after_update_cst(source, target, data, old_data)
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@staticmethod
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def before_delete_cst(source: RSFormCached, target: list[Constituenta],
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exclude: Optional[list[int]] = None) -> None:
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''' Trigger cascade resolutions before constituents are deleted. '''
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hosts = _get_oss_hosts(source.model.pk)
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for host in hosts:
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if exclude is None or host.pk not in exclude:
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OperationSchemaCached(host).before_delete_cst(source, target)
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@staticmethod
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def before_substitute(sourceID: int, substitutions: CstSubstitution,
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exclude: Optional[list[int]] = None) -> None:
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''' Trigger cascade resolutions before constituents are substituted. '''
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if len(substitutions) == 0:
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return
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hosts = _get_oss_hosts(sourceID)
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for host in hosts:
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if exclude is None or host.pk not in exclude:
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OperationSchemaCached(host).before_substitute(sourceID, substitutions)
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@staticmethod
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def before_delete_schema(item: LibraryItem, exclude: Optional[list[int]] = None) -> None:
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''' Trigger cascade resolutions before schema is deleted. '''
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if item.item_type != LibraryItemType.RSFORM:
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return
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hosts = _get_oss_hosts(item.pk)
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if len(hosts) == 0:
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return
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schema = RSFormCached(item)
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PropagationFacade.before_delete_cst(schema, list(schema.constituentsQ().order_by('order')), exclude)
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