Class: Groonga::DatabaseDumper — rroonga - ラングバ

Class: Groonga::DatabaseDumper

Inherits:
Object
  • Object
show all
Defined in:
lib/groonga/dumper.rb

Overview

データベースの内容をgrn式形式の文字列として出力するクラス。

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ DatabaseDumper

Returns a new instance of DatabaseDumper.



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# File 'lib/groonga/dumper.rb', line 45

def initialize(options={})
  @options = options
end

Class Method Details

.dump(options = {}) ⇒ Object

Dump database

TODO: document options paramter



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# File 'lib/groonga/dumper.rb', line 39

def dump(options={})
  dumper = new(options)
  dumper.dump
end

Instance Method Details

#dump ⇒ Object 



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# File 'lib/groonga/dumper.rb', line 49

def dump
  options = @options.dup
  have_output = !@options[:output].nil?
  options[:output] ||= Dumper.default_output
  options[:error_output] ||= Dumper.default_output
  if options[:database].nil?
    options[:context] ||= Groonga::Context.default
    options[:database] = options[:context].database
  end
  options[:dump_schema] = true if options[:dump_schema].nil?
  options[:dump_indexes] = true if options[:dump_indexes].nil?
  options[:dump_tables] = true if options[:dump_tables].nil?

  if options[:dump_schema] or options[:dump_indexes]
    schema_dumper = SchemaDumper.new(options.merge(:syntax => :command))
  end

  if options[:dump_schema]
    dump_plugins(options)
    schema_dumper.dump_tables
    if schema_dumper.have_reference_columns?
      options[:output].write("\n")
      schema_dumper.dump_reference_columns
    end
  end
  dump_tables(options) if options[:dump_tables]
  if options[:dump_indexes] and schema_dumper.have_index_columns?
    options[:output].write("\n")
    schema_dumper.dump_index_columns
  end

  if have_output
    nil
  else
    options[:output].string
  end
end