remove caching

model.py

@@ -4,35 +4,14 @@
 # full copyright notices and license terms.
 
 from trytond.model import (
-    MultiValueMixin, ValueMixin, fields, Unique, Model, Index)
+    MultiValueMixin, ValueMixin, fields, Unique, Index)
 from trytond.transaction import Transaction
 from trytond.pool import Pool
-from trytond.cache import MemoryCache
-from trytond.config import config
-from datetime import timedelta
-from decimal import Decimal
 from sql import With
 from sql.functions import Function
-from sql.conditionals import Coalesce
-import copy
 from .const import DEF_NONE
 
 
-if config.get('cashbook', 'memcache', default='yes').lower() \
-        in ['yes', '1', 'true']:
-    ENABLE_CACHE = True
-else:
-    ENABLE_CACHE = False
-
-if config.get('cashbook', 'sync', default='yes').lower() \
-        in ['yes', '1', 'true']:
-    ENABLE_CACHESYNC = True
-else:
-    ENABLE_CACHESYNC = False
-
-CACHEKEY_CURRENCY = 'currency-%s'
-
-
 class ArrayAgg(Function):
     """input values, including nulls, concatenated into an array.
     """
@@ -86,155 +65,6 @@ class Array(Function):
 # end Array
 
 
-class MemCache(Model):
-    """ store values to cache
-    """
-    __name__ = 'cashbook.memcache'
-
-    _cashbook_value_cache = MemoryCache(
-        'cashbook.book.valuecache',
-        context=False,
-        duration=timedelta(seconds=60*60*4))
-
-    @classmethod
-    def read_value(cls, cache_key):
-        """ read values from cache
-        """
-        if ENABLE_CACHE is False:
-            return None
-        return copy.deepcopy(cls._cashbook_value_cache.get(cache_key))
-
-    @classmethod
-    def store_result(cls, records, cache_keys, values, skip_records=[]):
-        """ store result to cache
-        """
-        if ENABLE_CACHE is False:
-            return
-        for record in records:
-            if record not in skip_records:
-                continue
-            data = {
-                x: values[x][record.id]
-                for x in values.keys() if record.id in values[x].keys()}
-            cls._cashbook_value_cache.set(
-                cache_keys[record.id], copy.deepcopy(data))
-        if ENABLE_CACHESYNC is True:
-            cls._cashbook_value_cache.sync(Transaction())
-
-    @classmethod
-    def store_value(cls, cache_key, values):
-        """ store values to cache
-        """
-        if ENABLE_CACHE is False:
-            return
-        cls._cashbook_value_cache.set(cache_key, copy.deepcopy(values))
-
-    @classmethod
-    def read_from_cache(cls, records, cache_keys, names, result):
-        """ get stored values from memcache
-        """
-        if ENABLE_CACHE is False:
-            return (records, result)
-
-        todo_records = []
-        for record in records:
-            values = copy.deepcopy(cls.read_value(cache_keys[record.id]))
-            if values:
-                for name in names:
-                    if name not in values.keys():
-                        continue
-                    if values[name] is None:
-                        continue
-                    if result[name][record.id] is None:
-                        result[name][record.id] = Decimal('0.0')
-                    result[name][record.id] += values[name]
-            else:
-                todo_records.append(record)
-        return (todo_records, result)
-
-    @classmethod
-    def get_key_by_record(cls, name, record, query, addkeys=[]):
-        """ read records to build a cache-key
-        """
-        pool = Pool()
-        cursor = Transaction().connection.cursor()
-
-        if ENABLE_CACHE is False:
-            return '-'
-
-        fname = [name, str(record.id)]
-        fname.extend(addkeys)
-
-        # query the last edited record for each item in 'query'
-        for line in query:
-            if len(line.keys()) == 0:
-                continue
-
-            if 'cachekey' in line.keys():
-                key = cls.read_value(line['cachekey'])
-                if key:
-                    fname.append(key)
-                    continue
-
-            Model = pool.get(line['model'])
-            tab_model = Model.__table__()
-
-            tab_query = Model.search(line['query'], query=True)
-            qu1 = tab_model.join(
-                    tab_query,
-                    condition=tab_query.id == tab_model.id,
-                ).select(
-                    tab_model.id,
-                    tab_model.write_date,
-                    tab_model.create_date,
-                    limit=1,
-                    order_by=[
-                        Coalesce(
-                            tab_model.write_date, tab_model.create_date).desc,
-                        tab_model.id.desc,
-                        ],
-                )
-            cursor.execute(*qu1)
-            records = cursor.fetchall()
-            if len(records) > 0:
-                fname.append(cls.genkey(
-                    records[0][0],
-                    records[0][1],
-                    records[0][2],
-                    ))
-            else:
-                fname.append('0')
-
-            if 'cachekey' in line.keys():
-                key = cls.store_value(line['cachekey'], fname[-1])
-        return '-'.join(fname)
-
-    @classmethod
-    def genkey(cls, id_record, write_date, create_date):
-        """ get key as text
-        """
-        date_val = write_date if write_date is not None else create_date
-        return '-'.join([
-            str(id_record),
-            '%s%s' % (
-                'w' if write_date is not None else 'c',
-                date_val.timestamp() if date_val is not None else '-'),
-            ])
-
-    @classmethod
-    def record_update(cls, cache_key, record):
-        """ update cache-value
-        """
-        if ENABLE_CACHE is False:
-            return
-        cls.store_value(
-            cache_key,
-            cls.genkey(record.id, record.write_date, record.create_date)
-            if record is not None else None)
-
-# end mem_cache
-
-
 def sub_ids_hierarchical(model_name):
     """ get table with id and sub-ids
     """