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Versions: 7
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Stored size: 1.41 KB
Contents
class Card
module Query
# interpret CQL queries, transform them into SQL, and run them.
class CardQuery < AbstractQuery
include Clause
include Run
include MatchAttributes
include RelationalAttributes
include ReferenceAttributes
include FoundBy
include Interpretation
include Normalization
include Sorting
include Conjunctions
# Query Execution
# By default a query returns card objects. This is accomplished by returning
# a card identifier from SQL and then hooking into our caching system (see
# Card::Fetch)
def self.viewable_sql
Card::Query::SqlStatement.new.permission_conditions("cards")
end
def table
"cards"
end
def table_prefix
"c"
end
def initialize statement, comment=nil
super statement
@comment = comment || default_comment
interpret @statement
end
def default_comment
return if @superquery || !Card.config.sql_comments
statement.to_s
end
# Query Hierarchy
# @root, @subqueries, and @superquery are used to track a hierarchy of
# query objects. This nesting allows to find, for example, cards that
# link to cards that link to cards....
def limit
mods[:limit].to_i
end
def full?
!superquery && mods[:return] != "count"
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems