Class: Tarantool16::SchemaSpace

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

Defined Under Namespace

Classes: CallbackWrapper, Field, Index

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sid, name, fields) ⇒ SchemaSpace

Returns a new instance of SchemaSpace.



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

def initialize(sid, name, fields)
  @sid = sid
  @name = name
  @has_tail = false
  self.fields = fields
end

Instance Attribute Details

#fields ⇒ Object

Returns the value of attribute fields.



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# File 'lib/tarantool16/schema.rb', line 5

def fields
  @fields
end

#indices ⇒ Object

Returns the value of attribute indices.



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# File 'lib/tarantool16/schema.rb', line 5

def indices
  @indices
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/tarantool16/schema.rb', line 5

def name
  @name
end

#sid ⇒ Object (readonly)

Returns the value of attribute sid.



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# File 'lib/tarantool16/schema.rb', line 5

def sid
  @sid
end

Instance Method Details

#data ⇒ Object 



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# File 'lib/tarantool16/schema.rb', line 15

def data; self; end

#get_ino(ino, key, _iter, cb) ⇒ Object 



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# File 'lib/tarantool16/schema.rb', line 80

def get_ino(ino, key, _iter, cb)
  if ino.nil?
    unless key.is_a?(Hash)
      opt = Option.error(SchemaError, "Could not detect index without field names and iterator: #{key.inspect} in #{name_sid}")
      return cb.call(opt)
    end
    # key should be Hash here
    keys = key.keys
    keys << _iter
    _ino = @_fields_2_ino[keys]
    if _ino
      ind = @indices[_ino]
      return yield(_ino, ind.map_key(key))
    elsif _ino == false
      opt = Option.error(SchemaError, "Could not detect index for fields #{key.keys} in #{name_sid}")
      return cb.call(opt)
    end
    keys.pop
    iter = _iter.is_a?(Integer) ? _iter : ::Tarantool16.iter(iter)

    fields = keys.map{|fld|
      case fld
      when Integer
        fld
      when Symbol, String
        @field_names[fld].pos
      else
        return cb.call(Option.error(SchemaError, "Unknown field #{fld.inspect} in query key #{key.inspect}"))
      end
    }

    index = nil
    for ind in @indices
      next unless ind
      first_fields = ind.parts[0,fields.size]
      if ind.can_iterator?(iter, fields.size)
        if fields == first_fields
          index = ind
          break
        elsif (fields - first_fields).empty?
          index = ind
        end
      end
    end
    keys << _iter
    if index
      @_fields_2_ino[keys.freeze] = index.pos
      yield index.pos, index.map_key(key)
    else
      @_fields_2_ino[keys.freeze] = false
      cb.call(Option.error(SchemaError, "Could not detect index for fields #{key.keys} in #{name_sid}"))
    end
  elsif index = @index_names[ino]
    yield index.pos, index.map_key(key)
  else
    cb.call(Option.error(SchemaError, "Could not find index #{ino} for fields #{Hash===key ? key.keys : key.inspect} in #{name_sid}"))
  end
end

#indices? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tarantool16/schema.rb', line 76

def indices?
  @indices && !@indices.empty?
end

#map_ops(ops) ⇒ Object 



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

def map_ops(ops)
  ops.map do |op|
    case op1 = op[1]
    when Integer
      op
    when Symbol, String
      _op = op.dup
      _op[1] = @field_names[op1].pos
      _op
    when Array
      fld_pos = case op[0]
            when Integer
              op[0]
            when Symbol, String
              @field_names[op[0]].pos
            else
              raise "No field #{op[0].inspect} in #{name_sid}"
            end
      op1.dup.insert(1, fld_pos)
    end
  end
end

#map_tuple(tuple) ⇒ Object 



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# File 'lib/tarantool16/schema.rb', line 164

def map_tuple(tuple)
  row = []
  unless @has_tail
    tuple.each_key do |k|
      field = @field_names[k]
      row[field.pos] = tuple[k]
    end
  else
    tail = @fields.last
    tuple.each do |k|
      field = @field_names[k]
      val = tuple[k]
      if field.equal? tail
        unless tail.type.is_a?(Array)
          row[field.pos,0] = val
        else
          row[field.pos,0] = val.flatten(1)
        end
      else
        row[field.pos] = tuple[k]
      end
    end
  end
  row
end

#name_sid ⇒ Object 



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

def name_sid
  @_np ||= "space #{@name}:#{@sid}"
end

#ok? ⇒ Boolean

imitate Option

Returns:

  • (Boolean) 


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# File 'lib/tarantool16/schema.rb', line 14

def ok?; true; end

#tuple2hash(ar) ⇒ Object 



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# File 'lib/tarantool16/schema.rb', line 139

def tuple2hash(ar)
  raise "No fields defined for #{name_sid}" unless @fields && !@fields.empty?
  res = {}
  i = 0
  flds = @fields
  s = flds.size - (@has_tail ? 1 : 0)
  while i < s
    res[flds[i].name] = ar[i]
    i += 1
  end
  if @has_tail
    tail = flds[s]
    unless tail.type.is_a?(Array)
      res[tail.name] = ar[s..-1]
    else
      res[tail.name] = ar[s..-1].each_slice(tail.type.size).to_a
    end
  end
  res
end

#wrap_cb(cb) ⇒ Object 



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# File 'lib/tarantool16/schema.rb', line 213

def wrap_cb(cb)
  CallbackWrapper.new(self, cb)
end