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Versions: 4
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Stored size: 1.66 KB
Contents
# frozen_string_literal: true
module PgEventstore
module Web
module Paginator
class EventTypesCollection < BaseCollection
PER_PAGE = 10
# @return [Array<Hash>]
def collection
@_collection ||=
begin
sql_builder =
SQLBuilder.new.select('event_type').from('partitions').
where('context is not null and stream_name is not null').
group('event_type').order("event_type #{order}").limit(per_page)
sql_builder.where("event_type #{direction_operator} ?", starting_id) if starting_id
sql_builder.where('event_type like ?', "#{options[:query]}%")
connection.with do |conn|
conn.exec_params(*sql_builder.to_exec_params)
end.to_a
end
end
# @return [String, nil]
def next_page_starting_id
return unless collection.size == per_page
starting_id = collection.first['event_type']
sql_builder =
SQLBuilder.new.select('event_type').from('partitions').
where('context is not null and stream_name is not null').
where("event_type #{direction_operator} ?", starting_id).where('event_type like ?', "#{options[:query]}%").
group('event_type').order("event_type #{order}").limit(1).offset(per_page)
connection.with do |conn|
conn.exec_params(*sql_builder.to_exec_params)
end.to_a.dig(0, 'event_type')
end
private
# @return [String]
def direction_operator
order == :asc ? '>=' : '<='
end
end
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems