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# File 'lib/fairy/node/p-basic-group-by.rb', line 144
def start_export
Log::debug(self, "START_EXPORT")
start do
hash_opt = @opts[:grouping_optimize]
hash_opt = CONF.GROUP_BY_GROUPING_OPTIMIZE if hash_opt.nil?
if hash_opt
@key_proc = eval("proc{#{@block_source.source}}", @context.binding)
else
@key_proc = BBlock.new(@block_source, @context, self)
end
policy = @opts[:postqueuing_policy]
begin
@input.each do |e|
keys = @key_proc.yield(e)
keys = [keys] unless keys.kind_of?(Array)
for key in keys
if Import::CTLTOKEN_NULLVALUE === key
next
end
export = @exports[key]
unless export
export = Export.new(policy)
export.njob_id = @id
export.add_key(key)
add_export(key, export)
end
export.push e
end
end
rescue
Log::debug_exception(self)
raise
ensure
@exports_queue.push nil
@exports.each_pair do |key, export|
next unless export
export.push END_OF_STREAM
end
end
end
end
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