317 lines
9.6 KiB
Python
317 lines
9.6 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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from datetime import datetime
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from django.db.models import Q, Manager
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from django.conf import settings
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from archive.models import Volume
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from itemlist.models import List
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import models
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import utils
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from ox.django.query import QuerySet
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def parseCondition(condition, user):
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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', '*')
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k = {'id': 'itemId'}.get(k, k)
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if not k:
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k = '*'
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v = condition['value']
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op = condition.get('operator')
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if not op:
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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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facet_keys = models.Item.facet_keys + ['title']
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for f in settings.CONFIG['filters']:
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if f['id'] not in facet_keys:
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facet_keys.append(f['id'])
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key_type = settings.CONFIG['keys'].get(k, {'type':'string'}).get('type')
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if isinstance(key_type, list):
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key_type = key_type[0]
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key_type = {
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'title': 'string',
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'person': 'string',
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'text': 'string',
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'year': 'string',
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'length': 'string',
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'layer': 'string',
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'list': 'list',
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}.get(key_type, key_type)
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if k == 'list':
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key_type = ''
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if (not exclude and op == '=' or op in ('$', '^')) and v == '':
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return Q()
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elif k == 'filename' and (user.is_anonymous() or \
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not user.get_profile().capability('canSeeFiles')):
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return Q(id=0)
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elif k == 'oshash':
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return Q(files__oshash=v)
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elif k == 'resolution':
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q = parseCondition({'key': 'width', 'value': v[0], 'operator': op}, user) \
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& parseCondition({'key': 'height', 'value': v[1], 'operator': op}, user)
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if exclude:
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q = ~q
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return q
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elif isinstance(v, list) and len(v) == 2 and op == '=':
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q = parseCondition({'key': k, 'value': v[0], 'operator': '>='}, user) \
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& parseCondition({'key': k, 'value': v[1], 'operator': '<'}, user)
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if exclude:
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q = ~q
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return q
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elif k in ('canplayvideo', 'canplayclips'):
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level = user.is_anonymous() and 'guest' or user.get_profile().get_level()
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allowed_level = settings.CONFIG['capabilities'][{
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'canplayvideo': 'canPlayVideo',
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'canplayclips': 'canPlayClips'
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}[k]][level]
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if v:
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q = Q(level__lte=allowed_level)
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else:
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q = Q(level__gt=allowed_level)
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if exclude:
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q = ~q
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return q
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elif key_type == 'boolean':
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q = Q(**{'find__key': k, 'find__value': v})
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if exclude:
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q = ~q
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return q
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elif key_type == "string":
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in_find = not k.startswith('itemId')
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if in_find:
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value_key = 'find__value'
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else:
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value_key = k
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if k in facet_keys:
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in_find = False
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facet_value = 'facets__value%s' % {
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'==': '__iexact',
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'>': '__gt',
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'>=': '__gte',
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'<': '__lt',
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'<=': '__lte',
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'^': '__istartswith',
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'$': '__iendswith',
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}.get(op, '__icontains')
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v = models.Item.objects.filter(**{'facets__key':k, facet_value:v})
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value_key = 'id__in'
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else:
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value_key = '%s%s' % (value_key, {
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'==': '__iexact',
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'>': '__gt',
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'>=': '__gte',
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'<': '__lt',
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'<=': '__lte',
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'^': '__istartswith',
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'$': '__iendswith',
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}.get(op, '__icontains'))
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k = str(k)
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value_key = str(value_key)
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if k == '*':
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q = Q(**{value_key: v})
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elif in_find:
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q = Q(**{'find__key': k, value_key: v})
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else:
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q = Q(**{value_key: v})
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if exclude:
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q = ~q
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return q
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elif k == 'list':
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q = Q(id=0)
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l = v.split(":")
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if len(l) == 1:
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vqs = Volume.objects.filter(name=v, user=user)
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if vqs.count() == 1:
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v = vqs[0]
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q = Q(files__instances__volume__id=v.id)
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elif len(l) >= 2:
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l = (l[0], ":".join(l[1:]))
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lqs = list(List.objects.filter(name=l[1], user__username=l[0]))
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if len(lqs) == 1 and lqs[0].accessible(user):
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l = lqs[0]
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if l.query.get('static', False) == False:
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data = l.query
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q = parseConditions(data.get('conditions', []),
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data.get('operator', '&'),
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user)
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else:
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q = Q(id__in=l.items.all())
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if exclude:
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q = ~q
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else:
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q = Q(id=0)
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return q
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elif key_type == 'date':
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def parse_date(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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#using sort here since find only contains strings
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v = parse_date(v.split('-'))
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vk = 'sort__%s%s' % (k, {
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'==': '__exact',
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'>': '__gt',
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'>=': '__gte',
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'<': '__lt',
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'<=': '__lte',
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}.get(op,''))
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vk = str(vk)
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q = Q(**{vk: v})
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if exclude:
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q = ~q
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return q
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else: #integer, float, list, time
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#use sort table here
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if key_type == 'time':
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v = int(utils.parse_time(v))
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vk = 'sort__%s%s' % (k, {
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'==': '__exact',
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'>': '__gt',
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'>=': '__gte',
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'<': '__lt',
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'<=': '__lte',
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}.get(op,''))
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vk = str(vk)
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q = Q(**{vk: v})
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if exclude:
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q = ~q
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return q
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def parseConditions(conditions, operator, user):
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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', '&'), user)
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if q:
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conn.append(q)
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else:
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conn.append(parseCondition(condition, user))
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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 Q()
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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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return QuerySet(self.model)
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def filter_list(self, qs, l, user):
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if l != "*":
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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:
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l = [user.username] + l
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if 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 = lqs.filter(Q(status='public')|Q(status='featured'))
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if lqs.count() == 1:
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if lqs[0].query:
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data = lqs[0].query
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conditions = parseConditions(data['query']['conditions'],
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data['query'].get('operator', '&'),
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user)
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qs = qs.filter(conditions)
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else:
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qs = qs.filter(id__in=lqs[0].items.all())
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return qs
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def find(self, data, user=None):
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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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conditions = parseConditions(data.get('query', {}).get('conditions', []),
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data.get('query', {}).get('operator', '&'),
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user)
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qs = qs.filter(conditions)
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#FIXME: can this be avoided? needed for grid/accessed/foo
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qs = qs.distinct()
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#anonymous can only see public items
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if not user or user.is_anonymous():
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allowed_level = settings.CONFIG['capabilities']['canSeeItem']['guest']
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qs = qs.filter(level__lte=allowed_level)
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#users can see public items, there own items and items of there groups
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else:
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allowed_level = settings.CONFIG['capabilities']['canSeeItem'][user.get_profile().get_level()]
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q = Q(level__lte=allowed_level)|Q(user=user)
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if user.groups.count():
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q |= Q(groups__in=user.groups.all())
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qs = qs.filter(q)
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#admins can see all available items
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return qs
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