Class: Lumix::SlowSearch

Inherits:
Object
  • Object
show all
Defined in:
lib/lumix/slow_search.rb

Constant Summary collapse

TAGGED =

Xxx|YYY

/([^\s\|]+)\|(\S+)/m

Instance Method Summary collapse

Constructor Details

#initialize(db, progress) ⇒ SlowSearch

Returns a new instance of SlowSearch.



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# File 'lib/lumix/slow_search.rb', line 6

def initialize(db, progress)
  @db = db
  @progress = progress
end

Instance Method Details

#concurrent_link? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lumix/slow_search.rb', line 11

def concurrent_link?
  true
end

#create_filter ⇒ Object 



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# File 'lib/lumix/slow_search.rb', line 49

def create_filter
  @filter ||= Filter.new('')
end

#find(filter, &block) ⇒ Object 



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# File 'lib/lumix/slow_search.rb', line 53

def find(filter, &block)
  yield_text = block && block.arity >= 1
  yield_tagged = block && block.arity >= 2

  prog = Progress.new(:search, TaggedText.count, filter)
  @progress[prog]

  re = Filter.to_re(filter)

  index = 0
  TaggedText.inject(0) do |result, t|
    fname = File.basename(t.filename)

    # matches to ranges
    results = []
    t.tagged.scan(re) do |hit|
      t_begin = $~.begin(0)
      t_end = $~.end(0)
      # TODO decouple database operations for performance
      results << find_range(t.id, t_begin, t_end, yield_text)
    end

    result += results.inject(0) do |res, f|
      if yield_tagged
        tagged_snippet = TextSnippet.new(fname, t.tagged, f[:tagged_begin].to_i, f[:tagged_end].to_i)
        if yield_text
          text_snippet = TextSnippet.new(fname, t.text, f[:src_begin].to_i, f[:src_end].to_i)
          yield text_snippet, tagged_snippet
        else
          yield tagged_snippet
        end
      end
      res += 1
    end
    @progress[prog, (index += 1)]
    result
  end
end

#find_range(t_id, t_begin, t_end, process_original) ⇒ Object 



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# File 'lib/lumix/slow_search.rb', line 92

def find_range(t_id, t_begin, t_end, process_original)
  if process_original
    ds = @db[:assoc].filter(:text_id => t_id).filter{tagged_end >= t_begin}.filter{tagged_begin < t_end}
    ds.select{[{min(:src_begin) => :src_begin},{ max(:src_end) => :src_end}, {min(:tagged_begin) => :tagged_begin}, {max(:tagged_end) => :tagged_end}]}.first
  else
    {:tagged_begin => t_begin, :tagged_end => t_end}
  end
end

#link_text(id) ⇒ Object 



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# File 'lib/lumix/slow_search.rb', line 15

def link_text(id)
  t = TaggedText[id]
  text = t.text
  puts "Linking text #{t.filename}"

  src_last = 0
  position = 0
  assoc = []
  t.tagged.scan(TAGGED) do |word, tag|
    tagged_begin = $~.begin(0)
    tagged_end = $~.end(0)

    word_re = Regexp.new(Regexp.escape(word).gsub(/_/, '\s*'))
    src_match = text[src_last..-1].match(word_re) # find the word
    if src_match
      src_begin = src_last + src_match.begin(0)
      src_end = src_last + src_match.end(0)

      src_last = src_end
      assoc << {:text_id => id, :position => position, :src_begin => src_begin, :src_end => src_end, :tagged_begin => tagged_begin, :tagged_end => tagged_end}
    else
      STDERR.puts "Could not find match for '#{word}' in text #{t.filename}"
      `echo '#{t.filename}:#{tagged_begin}:#{src_last} unmatched "#{word}"' >> unlinked.lst`
      return nil
    end
    position += 1
  end
  @db[:assoc].multi_insert(assoc)
rescue => e
  STDERR.puts e
  STDERR.puts e.backtrace
  raise e
end