Class: Tarantool16::DB

Inherits:
Object
  • Object
show all
Defined in:
lib/tarantool16/db.rb

Direct Known Subclasses

DumbDB

Constant Summary collapse

UNDEF = 
Object.new.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host, opts = {}) ⇒ DB

Returns a new instance of DB.



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# File 'lib/tarantool16/db.rb', line 6

def initialize(host, opts = {})
  @host = host
  @opts = opts.dup
  @future = nil
  @spaces = nil
  @defined_fields = {}
  _fill_standard_spaces
  @conn = self.class::Connection.new(@host, @opts)
end

Instance Attribute Details

#conn ⇒ Object (readonly)

Returns the value of attribute conn.



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# File 'lib/tarantool16/db.rb', line 4

def conn
  @conn
end

Instance Method Details

#_call(name, args, cb) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 190

def _call(name, args, cb)
  conn._call(name, args, cb)
end

#_delete(sno, ino, key, need_hash, cb) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 147

def _delete(sno, ino, key, need_hash, cb)
  ino = 0 if ino.nil? && key.is_a?(Array)
  if !need_hash && sno.is_a?(Integer) && ino.is_a?(Integer) && key.is_a?(Array)
    return conn._delete(sno, ino, key, cb)
  end
  _with_space(sno, cb) do |sp|
    sp.get_ino(ino, key, ITERATOR_EQ, cb) do |_ino, _key|
      _cb = need_hash ? sp.wrap_cb(cb) : cb
      conn._delete(sp.sid, _ino, _key, _cb)
    end
  end
end

#_fill_indices(spaces, rows) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 115

def _fill_indices(spaces, rows)
  rows.
    map{|row| [row[0], [row[2], row[1], row[3], 6.step(row.size-1, 2).map{|i| row[i]}]]}.
    group_by{|sid, _| sid}.
    each do |sid, inds|
      sp = spaces[sid]
      sp.indices = inds.map{|_sid, ind| ind}
    end 
end

#_fill_spaces(rows) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 104

def _fill_spaces(rows)
  @spaces = {}
  rows.each do |row|
    fields = @defined_fields[row[0]] || @defined_fields[row[2]] || row[6]
    sp = SchemaSpace.new(row[0], row[2], fields)
    @spaces[row[0]] = sp
    @spaces[sp.name] = sp
    @spaces[sp.name.to_sym] = sp
  end
end

#_fill_standard_spaces ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 31

def _fill_standard_spaces
  rf = @defined_fields
  rf[SPACE_INDEX] =
    [%w{sid num}, %w{iid num}, %w{name str},
     %w{type str}, %w{unique num}, %w{part_count num},
     {name: 'parts', type: [:num, :str], tail: true}]
end

#_insert(sno, tuple, need_hash, cb) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 125

def _insert(sno, tuple, need_hash, cb)
  if !need_hash && sno.is_a?(Integer) && tuple.is_a?(Array)
    return conn._insert(sno, tuple, cb)
  end
  _with_space(sno, cb) do |sp|
    _tuple = tuple.is_a?(Hash) ? sp.map_tuple(tuple) : tuple
    _cb = need_hash ? sp.wrap_cb(cb) : cb
    conn._insert(sp.sid, _tuple, _cb)
  end
end

#_ping(cb) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 194

def _ping(cb)
  conn._ping(cb)
end

#_replace(sno, tuple, need_hash, cb) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 136

def _replace(sno, tuple, need_hash, cb)
  if !need_hash && sno.is_a?(Integer) && tuple.is_a?(Array)
    return conn._replace(sno, tuple, cb)
  end
  _with_space(sno, cb) do |sp|
    _tuple = tuple.is_a?(Hash) ? sp.map_tuple(tuple) : tuple
    _cb = need_hash ? sp.wrap_cb(cb) : cb
    conn.insert(sp.sid, _tuple, _cb)
  end
end

#_select(sno, ino, key, offset, limit, iterator, need_hash, cb) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 160

def _select(sno, ino, key, offset, limit, iterator, need_hash, cb)
  key = [] if key.nil?
  ino = 0 if ino.nil? && key.is_a?(Array)
  iterator = ::Tarantool16.iter(iterator) unless iterator.is_a?(Integer)
  if sno.is_a?(Integer) && ino.is_a?(Integer) && (key.is_a?(Array) || key.nil?)
    return conn._select(sno, ino, key, offset, limit, iterator, cb)
  end
  _with_space(sno, cb) do |sp|
    sp.get_ino(ino, key, iterator, cb) do |_ino, _key|
      _cb = need_hash ? sp.wrap_cb(cb) : cb
      conn._select(sp.sid, _ino, _key, offset, limit, iterator, _cb)
    end
  end
end

#_space_future ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 65

def _space_future
  _synchronized do
    return @future if @future
    future = @future = self.class::SchemaFuture.new
    fill_indexes = nil
    spaces = nil
    fill_spaces = lambda do|r|
      unless r.ok?
        future.set r
        _synchronized do
          @future = nil
        end
      else
        _synchronized do
          _fill_spaces(r.data)
          spaces = @spaces
          _select(SPACE_INDEX, 0, [], 0, 2**30, :all, false, fill_indexes)
        end
      end
    end
    fill_indexes = lambda do |r|
      unless r.ok?
        future.set r
        _synchronized do
          @future = nil
          @spaces = nil
        end
      else
        _synchronized do
          _fill_indices(spaces, r.data)
          future.set Option.ok(spaces)
        end
      end
    end
    _select(SPACE_SPACE, 0, [], 0, 2**30, :all, false, fill_spaces)
    return future
  end
end

#_synchronized ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 39

def _synchronized
  raise "Override #_synchronized"
end

#_update(sno, ino, key, ops, need_hash, cb) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 175

def _update(sno, ino, key, ops, need_hash, cb)
  ino = 0 if ino.nil? && key.is_a?(Array)
  ops_good = ops.is_a?(Array) && ops.all?{|a| ops[1].is_a?(Integer)}
  if sno.is_a?(Integer) && ino.is_a?(Integer) && key.is_a?(Array) && ops_good
    return conn._update(sno, ino, key, ops, cb)
  end
  _with_space(sno, cb) do |sp|
    sp.get_ino(ino, key, ITERATOR_EQ, cb) do |_ino, _key|
      _ops = ops_good ? ops : sp.map_ops(ops)
      _cb = need_hash ? sp.wrap_cb(cb) : cb
      conn._update(sp.sid, _ino, _key, _ops, _cb)
    end
  end
end

#_with_space(name, cb) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 44

def _with_space(name, cb)
  future = @future || _space_future
  future.then_blk do |r|
    unless r.ok?
      cb.call r
    else
      sps = r.data
      sp = sps[name]
      if sp.nil? && Symbol == name
        sp = sps[name.to_s]
        sps[name] = sp unless sp.nil?
      end
      if sp.nil?
        cb.call Option.error(SchemaError, "space #{name} not found")
      else
        yield sp
      end
    end
  end
end

#define_fields(sid, fields) ⇒ Object 



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# File 'lib/tarantool16/db.rb', line 16

def define_fields(sid, fields)
  sid = sid.to_s if sid.is_a?(Symbol)
  @defined_fields[sid] = fields
  if @spaces && (sp = @spaces[sid])
    if sp.sid && sp.name && !sp.name.empty?
      rf1 = @defined_fields[sp.sid]
      rf2 = @defined_fields[sp.name]
      if rf1 && rf2 && rf1 != rf2
        raise "Misconfigured defined fields for #{sp.name_sid}"
      end
    end
    sp.fields = fields
  end
end