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ROC/modules/feed_aggregator/feed_aggregation.e

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note
description: "Feed aggregation parameters."
date: "$Date$"
revision: "$Revision$"
class
FEED_AGGREGATION
create
make
feature {NONE} -- Initialization
make (a_name: READABLE_STRING_GENERAL)
do
create name.make_from_string_general (a_name)
create {ARRAYED_LIST [READABLE_STRING_8]} locations.make (0)
expiration := 60*60
description_enabled := True
size := 10
end
feature -- Access
name: IMMUTABLE_STRING_32
-- Associated name.
expiration: INTEGER
-- Suggested expiration time in seconds (default: 1 hour).
-- If negative then never expires.
size: INTEGER
-- Number of entries to display per page.
description: detachable IMMUTABLE_STRING_32
-- Optional description.
locations: LIST [READABLE_STRING_8]
-- List of feed location aggregated into current.
included_categories: detachable LIST [READABLE_STRING_32]
-- Optional categories to filter.
-- If Void, include any.
description_enabled: BOOLEAN
-- Display description?
feature -- Status report
has_category_filter: BOOLEAN
-- Is there any category filtering?
-- i.e via `included_categories'
do
Result := attached included_categories as cats and then not cats.is_empty
end
feature -- Element change
set_description (a_desc: detachable READABLE_STRING_GENERAL)
do
if a_desc = Void then
description := Void
else
create description.make_from_string_general (a_desc)
end
end
set_expiration (nb_seconds: INTEGER)
-- Set `expiration' to `nb_seconds'.
do
expiration := nb_seconds
end
set_size (nb: INTEGER)
-- Set `size' to `nb'.
do
size := nb
end
set_description_enabled (b: BOOLEAN)
-- Set `description_enabled' to `b'.
do
description_enabled := b
end
reset_categories
do
included_categories := Void
end
include_category (a_cat: READABLE_STRING_GENERAL)
local
lst: like included_categories
s32: STRING_32
do
lst := included_categories
if lst = Void then
create {ARRAYED_LIST [READABLE_STRING_32]} lst.make (1)
included_categories := lst
lst.compare_objects
end
s32 := a_cat.to_string_32
if not lst.has (s32) then
lst.force (s32)
end
end
feature -- Status report
is_included (e: FEED_ITEM): BOOLEAN
-- Is `e' included in final aggregation?
-- i.e: related to `included_categories'
-- note that if `e' has no category, it is included by default,
-- even if `included_categories' is defined.
do
Result := True
if attached e.categories as e_cats then
if attached included_categories as lst then
Result := across lst as ic some
across e_cats as e_ic some
e_ic.item.same_string (ic.item)
end
end
end
end
end
end