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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Stores collection implementation
from util import *
from atomutil import *
from sys import debug
# Convert a particular store tag to a store id
def storeid(tag):
return ("store", tag, "store.apps")
# Get a store from the cache
def getstore(id, cache):
debug('store.py::getstore::id', id)
# Lookup the requested store
val = cache.get(id)
if isNull(val):
return ()
store = cdddr(car(val))
if not isNull(store) and isList(car(cadr(car(store)))):
# Expand list of entries
estore = tuple(map(lambda e: cons("'entry", e), cadr(car(store))))
debug('store.py::getstore::estore', estore)
return estore
debug('store.py::getstore::store', store)
return store
# Put a store into the cache
def putstore(id, store, cache):
debug('store.py::putstore::id', id)
debug('store.py::putstore::store', store)
val = ((("'feed", ("'title", "App Store"), ("'id", cadr(id))) + store),)
return cache.put(id, val)
# Put an app into a store
def put(id, app, user, cache, apps, ratings):
debug('store.py::put::id', id)
debug('store.py::put::app', app)
tag = car(id)
appid = cdr(id)
def putapp(appid, app, store):
if isNull(store):
return app
if car(appid) == entryid(store):
return cons(car(app), cdr(store))
return cons(car(store), putapp(appid, app, cdr(store)))
appentry = mkentry(title(app), car(appid), author(app), updated(app), content(app))
debug('store.py::put::appentry', appentry)
store = putapp(appid, appentry, getstore(storeid(tag), cache))
return putstore(storeid(tag), store, cache)
# Merge app info and ratings into a list of apps
def mergeapps(entries, apps, ratings):
debug('store.py::mergeapps::entries', entries)
def mergeapp(entry):
debug('store.py::mergeapp::entry', entry)
id = (entryid(entry),)
app = apps.get(id)
if isNull(app):
return ((),)
info = content(app)
rating = ratings.get(id)
rates = content(rating)
mergedentry = mkentry(title(app), car(id), author(app), updated(app), ("'info",) + (() if isNull(info) else cdr(info)) + (() if isNull(rates) else cdr(rates)))
return mergedentry
mergedentries = tuple(filter(lambda e: not isNull(e), map(lambda e: car(mergeapp((e,))), entries)))
debug('store.py::mergeapps::mergedentries', mergedentries)
return mergedentries
# Get apps from a store
def get(id, user, cache, apps, ratings):
debug('store.py::get::id', id)
tag = car(id)
# Collect the top rated apps
if tag == 'top':
topratings = ratings.get(())
topapps = mergeapps(cdddr(car(topratings)), apps, ratings)
topstore = ((("'feed", ("'title", 'App Store'), ("'id", tag)) + topapps),)
debug('store.py::get::store', topstore)
return topstore
# Collect the newest apps
if tag == 'new':
newapps = apps.get(())
newapps = mergeapps(cdddr(car(newapps)), apps, ratings)
newstore = ((("'feed", ("'title", 'App Store'), ("'id", tag)) + newapps),)
debug('store.py::get::store', newstore)
return newstore
# Collect the featured apps
appid = cdr(id)
def findapp(appid, store):
if isNull(store):
return None
if car(appid) == entryid(store):
return (car(store),)
return findapp(appid, cdr(store))
if isNull(appid):
storeapps = mergeapps(getstore(storeid(tag), cache), apps, ratings)
store = ((("'feed", ("'title", "App Store"), ("'id", tag)) + storeapps),)
debug('store.py::get::store', store)
return store
app = findapp(appid, getstore(storeid(tag), cache))
debug('store.py::get::app', app)
return app
# Delete apps from a store
def delete(id, user, cache, apps, ratings):
debug('store.py::delete::id', id)
tag = car(id)
appid = cdr(id)
if isNull(appid):
return cache.delete(storeid(tag))
def deleteapp(appid, store):
if isNull(store):
return ()
if car(appid) == entryid(store):
return cdr(store)
return cons(car(store), deleteapp(appid, cdr(store)))
store = getstore(storeid(tag), cache)
deleted = deleteapp(appid, store)
if deleted == store:
return False
return putstore(storeid(tag), deleted, cache)
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