Class: ActiveRecord::ConnectionAdapters::Mysql2SpatialAdapter::MainAdapter

Inherits:
ConnectionAdapters::Mysql2Adapter
  • Object
show all
Defined in:
lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb

Constant Summary collapse

NATIVE_DATABASE_TYPES = 
Mysql2Adapter::NATIVE_DATABASE_TYPES.merge(spatial: { name: 'geometry' })

Instance Method Summary collapse

Constructor Details

#initialize(*args_) ⇒ MainAdapter

Returns a new instance of MainAdapter.



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 42

def initialize(*args_)
  super
  # Rails 3.2 way of defining the visitor: do so in the constructor
  if defined?(@visitor) && @visitor
    @visitor = ::Arel::Visitors::MySQL2Spatial.new(self)
  end
end

Instance Method Details

#adapter_name ⇒ Object 



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 54

def adapter_name
  Mysql2SpatialAdapter::ADAPTER_NAME
end

#add_index(table_name_, column_name_, options_ = {}) ⇒ Object 



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 83

def add_index(table_name_, column_name_, options_={})
  if options_[:spatial]
    index_name_ = index_name(table_name_, column: Array(column_name_))
    if ::Hash === options_
      index_name_ = options_[:name] || index_name_
    end
    execute "CREATE SPATIAL INDEX #{index_name_} ON #{table_name_} (#{Array(column_name_).join(", ")})"
  else
    super
  end
end

#columns(table_name_, name_ = nil) ⇒ Object 



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 95

def columns(table_name_, name_=nil)
  result_ = execute("SHOW FIELDS FROM #{quote_table_name(table_name_)}", :skip_logging)
  columns_ = []
  result_.each(symbolize_keys: true, as: :hash) do |field_|
    columns_ << SpatialColumn.new(@rgeo_factory_settings, table_name_.to_s,
      field_[:Field], field_[:Default], field_[:Type], field_[:Null] == "YES")
  end
  columns_
end

#indexes(table_name_, name_ = nil) ⇒ Object

Returns an array of indexes for the given table.



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 106

def indexes(table_name_, name_=nil)
  indexes_ = []
  current_index_ = nil
  result_ = execute("SHOW KEYS FROM #{quote_table_name(table_name_)}", name_)
  result_.each(symbolize_keys: true, as: :hash) do |row_|
    if current_index_ != row_[:Key_name]
      next if row_[:Key_name] == 'PRIMARY' # skip the primary key
      current_index_ = row_[:Key_name]
      mysql_index_type = row_[:Index_type].downcase.to_sym
      index_type  = INDEX_TYPES.include?(mysql_index_type)  ? mysql_index_type : nil
      index_using = INDEX_USINGS.include?(mysql_index_type) ? mysql_index_type : nil
      options = [row_[:Table], row_[:Key_name], row_[:Non_unique].to_i == 0, [], [], nil, nil, index_type, index_using]
      indexes_ << if mysql_index_type == :spatial
        options.push(true)
        ::RGeo::ActiveRecord::SpatialIndexDefinition.new(*options)
      else
        IndexDefinition.new(*options)
      end
    end
    last_index_ = indexes_.last
    last_index_.columns << row_[:Column_name]
    last_index_.lengths << row_[:Sub_part] unless mysql_index_type == :spatial
  end
  indexes_
end

#native_database_types ⇒ Object 



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 62

def native_database_types
  NATIVE_DATABASE_TYPES
end

#quote(value_, column_ = nil) ⇒ Object 



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 66

def quote(value_, column_=nil)
  if ::RGeo::Feature::Geometry.check_type(value_)
    "GeomFromWKB(0x#{::RGeo::WKRep::WKBGenerator.new(hex_format: true).generate(value_)},#{value_.srid})"
  else
    super
  end
end

#set_rgeo_factory_settings(factory_settings_) ⇒ Object 



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 50

def set_rgeo_factory_settings(factory_settings_)
  @rgeo_factory_settings = factory_settings_
end

#spatial_column_constructor(name_) ⇒ Object 



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 58

def spatial_column_constructor(name_)
  ::RGeo::ActiveRecord::DEFAULT_SPATIAL_COLUMN_CONSTRUCTORS[name_]
end

#type_to_sql(type_, limit_ = nil, precision_ = nil, scale_ = nil) ⇒ Object 



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# File 'lib/active_record/connection_adapters/mysql2spatial_adapter/main_adapter.rb', line 74

def type_to_sql(type_, limit_=nil, precision_=nil, scale_=nil)
  if (info_ = spatial_column_constructor(type_.to_sym))
    type_ = limit_[:type] || type_ if limit_.is_a?(::Hash)
    type_ = 'geometry' if type_.to_s == 'spatial'
    type_ = type_.to_s.gsub('_', '').upcase
  end
  super(type_, limit_, precision_, scale_)
end