216 lines
6.1 KiB
Python
216 lines
6.1 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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import re
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from datetime import datetime
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from urllib2 import unquote
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from ox.utils import json
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from django.contrib.auth.models import User
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from django.core.exceptions import ObjectDoesNotExist
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from django.db.models import Q, Manager
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import models
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def keyType(key):
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if key in ('released', ):
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return "date"
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if key in ('year', 'cast.length'):
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return "int"
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if key in ('rating', 'votes'):
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return "float"
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return "string"
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def parseCondition(condition):
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'''
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condition: {
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value: "war"
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}
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or
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condition: {
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key: "year",
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value: "1970-1980,
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operator: "!="
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}
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...
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'''
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k = condition.get('key', 'all')
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k = {'id': 'itemId'}.get(k, k)
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if not k: k = 'all'
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v = condition['value']
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op = condition.get('operator', None)
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if not op: op = '~'
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if op.startswith('!'):
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op = op[1:]
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exclude = True
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else:
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exclude = False
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if keyType(k) == "string":
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in_find=True
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value_key = 'find__value'
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if op == '=':
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if k in models.Item.facet_keys:
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in_find=False
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v = models.Item.objects.filter(facets__key=k, facets__value=v)
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k = 'id__in'
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else:
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value_key = 'find__value__iexact'
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elif op == '^':
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v = v[1:]
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value_key = 'find__value__istartswith'
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elif op == '$':
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v = v[:-1]
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value_key = 'find__value__iendswith'
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else: # elif op == '~':
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value_key = 'find__value__icontains'
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k = str(k)
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if exclude:
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if in_find and not k.startswith('itemId'):
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q = ~Q(**{'find__key':k, value_key:v})
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else:
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q = ~Q(**{k:v})
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else:
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if in_find and not k.startswith('itemId'):
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q = Q(**{'find__key':k, value_key:v})
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else:
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q = Q(**{k:v})
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return q
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else: #number or date
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#FIXME: this part needs to be moved to use key/value find db
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def parseDate(d):
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while len(d) < 3:
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d.append(1)
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return datetime(*[int(i) for i in d])
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if op == '-':
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v1 = v[1]
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v2 = v[2]
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if keyType(k) == "date":
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v1 = parseDate(v1.split('.'))
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v2 = parseDate(v2.split('.'))
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if exclude: #!1960-1970
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k1 = 'value__lt'
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k2 = 'value__gte'
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return Q(**{'find__key': k, k1:v1})|Q(**{'find__key': k, k2:v2})
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else: #1960-1970
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k1 = 'value__gte'
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k2 = 'value__lt'
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return Q(**{'find__key': k, k1:v1})&Q(**{'find__key': k, k2:v2})
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else:
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if keyType(k) == "date":
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v = parseDate(v.split('.'))
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if op == '=':
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vk = 'value__exact'
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elif op == '>':
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vk = 'value__gt'
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elif op == '>=':
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vk = 'value__gte'
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elif op == '<':
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vk = 'value__lt'
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elif op == '<=':
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vk = 'value__lte'
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vk = 'find__%s' % vk
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vk = str(vk)
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if exclude: #!1960
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return ~Q(**{'find__key': k, vk:v})
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else: #1960
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return Q(**{'find__key': k, vk:v})
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def parseConditions(conditions, operator):
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'''
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conditions: [
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{
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value: "war"
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}
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{
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key: "year",
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value: "1970-1980,
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operator: "!="
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},
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{
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key: "country",
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value: "f",
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operator: "^"
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}
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],
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operator: "&"
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'''
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conn = []
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for condition in conditions:
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if 'conditions' in condition:
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q = parseConditions(condition['conditions'],
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condition.get('operator', '&'))
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if q: conn.append(q)
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pass
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else:
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if condition.get('value', '') != '' or condition.get('operator', '') == '=':
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conn.append(parseCondition(condition))
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if conn:
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q = conn[0]
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for c in conn[1:]:
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if operator == '|':
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q = q | c
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else:
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q = q & c
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return q
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return None
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class ItemManager(Manager):
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def get_query_set(self):
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return super(ItemManager, self).get_query_set()
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def filter_list(self, qs, l, user):
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if l != "all":
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l = l.split(":")
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only_public = True
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if not user.is_anonymous():
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if len(l) == 1: l = [request.user.username] + l
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if request.user.username == l[0]:
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only_public = False
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if len(l) == 2:
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lqs = models.List.objects.filter(name=l[1], user__username=l[0])
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if only_public:
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lqs = qls.filter(public=True)
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if lqs.count() == 1:
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qs = qs.filter(listitem__list__id=lqs[0].id)
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return qs
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def find(self, data, user):
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'''
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query: {
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conditions: [
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{
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value: "war"
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}
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{
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key: "year",
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value: "1970-1980,
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operator: "!="
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},
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{
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key: "country",
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value: "f",
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operator: "^"
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}
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],
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operator: "&"
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}
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'''
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#join query with operator
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qs = self.get_query_set()
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#only include items that have hard metadata
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qs = qs.filter(available=True)
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conditions = parseConditions(data['query']['conditions'],
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data['query'].get('operator', '&'))
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if conditions:
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qs = qs.filter(conditions)
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#FIXME: lists are part of query now
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# filter list, works for own or public lists
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l = data.get('list', 'all')
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qs = self.filter_list(qs, l, user)
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return qs
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