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select.rb
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select.rb
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# Copyright (C) 2013 Droonga Project
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License version 2.1 as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
module Droonga
class GroongaInputAdapter
class Select
def convert(select_request)
table = select_request["table"]
result_name = table + "_result"
match_columns = select_request["match_columns"]
match_to = match_columns ? match_columns.split(/ *\|\| */) : []
query = select_request["query"]
output_columns = select_request["output_columns"] || ""
attributes = output_columns.split(/, */)
offset = (select_request["offset"] || "0").to_i
limit = (select_request["limit"] || "10").to_i
search_request = {
"queries" => {
result_name => {
"source" => table,
"output" => {
"elements" => [
"startTime",
"elapsedTime",
"count",
"attributes",
"records",
],
"attributes" => attributes,
"offset" => offset,
"limit" => limit,
},
}
}
}
if query
condition = {
"query" => query,
"matchTo"=> match_to,
"defaultOperator"=> "&&",
"allowPragma"=> false,
"allowColumn"=> true,
}
search_request["queries"][result_name]["condition"] = condition
end
search_request
end
end
end
end