def series(self):
Ss = list(
self.related_entities('books_series_link', 'book', 'series',
'series'))
if Ss:
return the(Ss)
return None
def __getattr__(self, attr):
k, plural = parseUC_sAttr(attr)
if k is None:
return self.__dict__[k]
if plural:
if k not in self.__M:
return ()
return self.__M[k]
return the(self.__M[k])
def __getitem__(self, nodeid):
if type(nodeid) is int or type(nodeid) is long:
if nodeid not in self.__nodeCache:
self.__nodeCache[nodeid] = self._newNode(nodeid)
return self.__nodeCache[nodeid]
if type(nodeid) is tuple:
return the(self.nodesByNameAndType(nodeid[0], *nodeid[1:]),
repr(nodeid))
raise IndexError("invalid index " + repr(nodeid))
def op_table(self, args):
if not args:
raise GetoptError("missing table name")
table_name = args.pop(0)
with Pfx(table_name):
tbl = getattr(self.t, table_name)
if not args:
raise GetoptError("missing node name")
nodename = args.pop(0)
row = the(tbl.select(tbl.c.name == nodename).execute())
if not args:
for col in sorted(row.keys()):
print("%-14s: %s" % (col, row[col]))
return
for arg in args:
if '=' in arg:
col, value = arg.split('=', 1)
print("SET %s.%s = %s" % (nodename, col, value))
tbl.update().where(tbl.c.name == nodename).values(**{col: value}).execute()
else:
col = arg
print("%s.%s = %s" % (nodename, col, row[col]))
def __getitem__(self, id_value):
''' Fetch the row or rows indicated by `id_value`.
If `id_value` is None or a string or is not slicelike or
is not iterable return the sole matching row or raise
IndexError.
Otherwise return a list of row_class instances.
'''
cache = self._row_cache
if id_value is None or isinstance(id_value, int):
# direct lookup, return single row
row = cache.get(id_value)
if row is not None:
return row
row, = self.rows_where(**{self.id_column: id_value})
return row
if isinstance(id_value, str):
return self.named_row(id_value, fuzzy=True)
if isinstance(id_value, (list, set, tuple)):
cached = {k: cache.get(k) for k in id_value}
rows = list(filter(None, cached.values()))
id_value = [ row for k, row in cached.items() if not row ]
# id_value now a unique list of row keys
if id_value:
if len(id_value) >= 1024:
id_value = sorted(id_value)
offset = 0
while offset < len(id_value):
rows.extend(id_value[offset:offset+1024])
offset += 1024
else:
condition = where_index(self.id_column, id_value)
rows.extend(self.rows(condition.where, *condition.params))
return rows
condition = where_index(self.id_column, id_value)
rows = self.rows(condition.where, *condition.params)
if condition.is_scalar:
return the(rows)
return rows
def _nodeByNameAndType(self, name, *types):
return the(self.nodesByNameAndType(name, *types), repr((name, types)))
def selectRow(self, where):
return the(self.selectRows(where))
def rating(self):
Rs = list(self.related_entities('books_ratings_link', 'book',
'rating'))
if Rs:
return the(Rs).rating
return None
def tag_by_name(self, tag_name):
return the(T for T in self.table_tags if T.name == tag_name)
def book_by_title(self, book_title):
return the(self.books_by_title(book_title))
