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Versions: 4
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Contents
require "expression_rewriter"
require "expression_rewriters"
require "expression_tree_builder"
require "scan_info"
require "scan_info_builder"
require "scan_info_data_size_estimator"
require "expression_size_estimator"
module Groonga
class Expression
def rewrite
rewritten = nil
begin
return nil unless ExpressionRewriters.enabled?
source = self
ExpressionRewriters.classes.each do |rewriter_class|
rewriter = rewriter_class.new(source)
new_rewritten = rewriter.rewrite
if new_rewritten
rewritten.close if rewritten
rewritten = new_rewritten
source = rewritten
end
end
rescue GroongaError => groonga_error
context.set_groonga_error(groonga_error)
rewritten.close if rewritten
rewritten = nil
rescue => error
context.record_error(:invalid_argument, error)
rewritten.close if rewritten
rewritten = nil
end
rewritten
end
def build_scan_info(op, record_exist)
begin
builder = ScanInfoBuilder.new(self, op, record_exist)
builder.build
rescue => error
context.record_error(:invalid_argument, error)
nil
end
end
def estimate_size(table)
begin
estimator = ExpressionSizeEstimator.new(self, table)
estimator.estimate
rescue GroongaError => groonga_error
context.set_groonga_error(groonga_error)
table.size
rescue => error
context.record_error(:unknown_error, error)
table.size
end
end
private
def context
@context ||= Context.instance
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems