#!/usr/bin/python
# -*- coding: utf-8 -*-
"""DOI transaction relationship."""
from peewee import ForeignKeyField
from .utils import index_hash, unicode_type
from .transaction_user import TransactionUser
from .doi_entries import DOIEntries
from ..rest.orm import CherryPyAPI
[docs]class DOITransaction(CherryPyAPI):
"""
Relates DOI entries with transaction release entries.
Attributes:
+-------------------+--------------------------------------------+
| Name | Description |
+===================+============================================+
| doi | Link to the DOI model |
+-------------------+--------------------------------------------+
| transaction | Link to the TransactionRelease model |
+-------------------+--------------------------------------------+
"""
doi = ForeignKeyField(
DOIEntries, backref='transactions', field='doi', column_name='doi', primary_key=True)
transaction = ForeignKeyField(TransactionUser, backref='doi_releases')
[docs] def to_hash(self, **flags):
"""Convert the object to a hash."""
obj = super(DOITransaction, self).to_hash(**flags)
obj['_id'] = index_hash(
unicode_type(self.__data__['doi']),
str(self.__data__['transaction'])
)
obj['doi'] = unicode_type(self.__data__['doi'])
obj['transaction'] = str(self.__data__['transaction'])
return obj
[docs] def from_hash(self, obj):
"""Convert the hash into the object."""
super(DOITransaction, self).from_hash(obj)
self._set_only_if('doi', obj, 'doi',
lambda: DOIEntries.get(DOIEntries.doi == obj['doi']))
self._set_only_if('transaction', obj, 'transaction',
lambda: TransactionUser.get(TransactionUser.uuid == obj['transaction']))
[docs] @classmethod
def where_clause(cls, kwargs):
"""Where clause for the various elements."""
where_clause = super(DOITransaction, cls).where_clause(kwargs)
return cls._where_attr_clause(where_clause, kwargs, ['doi', 'transaction'])