Module: Tapsoob::Schema

Extended by:
Schema
Included in:
Schema
Defined in:
lib/tapsoob/schema.rb

Instance Method Summary collapse

Instance Method Details

#dump(database_url) ⇒ Object 



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# File 'lib/tapsoob/schema.rb', line 12

def dump(database_url)
  db = Sequel.connect(database_url)
  db.extension :schema_dumper
  template = ERB.new <<-END_MIG
Class.new(Sequel::Migration) do
  def up
  <% db.tables.each do |table| %>
<%= db.dump_table_schema(table, indexes: false) %>
  <% end %>
  end

  def down
  <% db.tables.each do |table| %>
drop_table("<%= table %>", if_exists: true)
  <% end %>
  end
end
END_MIG

  template.result(binding)
end

#dump_table(database_url, table) ⇒ Object 



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# File 'lib/tapsoob/schema.rb', line 34

def dump_table(database_url, table)
  table = table.to_sym
  Sequel.connect(database_url) do |db|
    db.extension :schema_dumper
    <<END_MIG
Class.new(Sequel::Migration) do
  def up
#{db.dump_table_schema(table, indexes: false)}
  end

  def down
drop_table("#{table}", if_exists: true)
  end
end
END_MIG
  end
end

#indexes(database_url) ⇒ Object 



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# File 'lib/tapsoob/schema.rb', line 52

def indexes(database_url)
  db = Sequel.connect(database_url)
  db.extension :schema_dumper
  db.dump_indexes_migration
end

#indexes_individual(database_url) ⇒ Object 



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# File 'lib/tapsoob/schema.rb', line 58

def indexes_individual(database_url)
  idxs = {}
  Sequel.connect(database_url) do |db|
    db.extension :schema_dumper

    tables = db.tables
    tables.each do |table|
      idxs[table] = db.send(:dump_table_indexes, table, :add_index, {}).split("\n")
    end
  end

  idxs.each do |table, indexes|
    idxs[table] = indexes.map do |idx|
      <<END_MIG
Class.new(Sequel::Migration) do
  def up
#{idx}
  end
end
END_MIG
    end
  end
  JSON.generate(idxs)
end

#load(database_url, schema, options = { drop: false }) ⇒ Object 



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# File 'lib/tapsoob/schema.rb', line 83

def load(database_url, schema, options = { drop: false })
  Sequel.connect(database_url) do |db|
    db.extension :schema_dumper
    klass = eval(schema)
    if options[:drop]
      # Start special hack for MySQL
      db.run("SET foreign_key_checks = 0") if [:mysql, :mysql2].include?(db.adapter_scheme)

      # Run down migration
      klass.apply(db, :down)

      # End special hack for MySQL
      db.run("SET foreign_key_checks = 1") if [:mysql, :mysql2].include?(db.adapter_scheme)
    end
    klass.apply(db, :up)
  end
end

#load_indexes(database_url, indexes) ⇒ Object 



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# File 'lib/tapsoob/schema.rb', line 101

def load_indexes(database_url, indexes)
  Sequel.connect(database_url) do |db|
    db.extension :schema_dumper
    eval(indexes).apply(db, :up)
  end
end

#reset_db_sequences(database_url) ⇒ Object 



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# File 'lib/tapsoob/schema.rb', line 108

def reset_db_sequences(database_url)
  db = Sequel.connect(database_url)
  db.extension :schema_dumper
  return unless db.respond_to?(:reset_primary_key_sequence)
  db.tables.each do |table|
    db.reset_primary_key_sequence(table)
  end
end