Class: ActiveRecord::ConnectionAdapters::PostGIS::SpatialColumn

Inherits:
ConnectionAdapters::PostgreSQLColumn
  • Object
show all
Defined in:
lib/active_record/connection_adapters/postgis/spatial_column.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, default, sql_type_metadata = nil, null = true, table_name = nil, default_function = nil, collation = nil, cast_type = nil, opts = nil) ⇒ SpatialColumn

sql_type examples:

"Geometry(Point,4326)"
"Geography(Point,4326)"

cast_type example classes:

OID::Spatial
OID::Integer



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# File 'lib/active_record/connection_adapters/postgis/spatial_column.rb', line 11

def initialize(name, default, sql_type_metadata = nil, null = true, table_name = nil, default_function = nil, collation = nil, cast_type = nil, opts = nil)
  @cast_type = cast_type
  @geographic = !!(sql_type_metadata.sql_type =~ /geography\(/i)
  if opts
    # This case comes from an entry in the geometry_columns table
    set_geometric_type_from_name(opts[:type])
    @srid = opts[:srid].to_i
    @has_z = !!opts[:has_z]
    @has_m = !!opts[:has_m]
  elsif @geographic
    # Geographic type information is embedded in the SQL type
    @srid = 4326
    @has_z = @has_m = false
    build_from_sql_type(sql_type_metadata.sql_type)
  elsif sql_type =~ /geography|geometry|point|linestring|polygon/i
    build_from_sql_type(sql_type_metadata.sql_type)
  elsif sql_type_metadata.sql_type =~ /geography|geometry|point|linestring|polygon/i
    # A geometry column with no geometry_columns entry.
    # @geometric_type = geo_type_from_sql_type(sql_type)
    build_from_sql_type(sql_type_metadata.sql_type)
  end
  super(name, default, sql_type_metadata, null, table_name, default_function, collation)
  if spatial?
    if @srid
      @limit = { srid: @srid, type: to_type_name(geometric_type) }
      @limit[:has_z] = true if @has_z
      @limit[:has_m] = true if @has_m
      @limit[:geographic] = true if @geographic
    end
  end
end

Instance Attribute Details

#geographic ⇒ Object (readonly) Also known as: geographic?

Returns the value of attribute geographic.



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# File 'lib/active_record/connection_adapters/postgis/spatial_column.rb', line 43

def geographic
  @geographic
end

#geometric_type ⇒ Object (readonly)

Returns the value of attribute geometric_type.



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# File 'lib/active_record/connection_adapters/postgis/spatial_column.rb', line 43

def geometric_type
  @geometric_type
end

#has_m ⇒ Object (readonly) Also known as: has_m?

Returns the value of attribute has_m.



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# File 'lib/active_record/connection_adapters/postgis/spatial_column.rb', line 43

def has_m
  @has_m
end

#has_z ⇒ Object (readonly) Also known as: has_z?

Returns the value of attribute has_z.



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# File 'lib/active_record/connection_adapters/postgis/spatial_column.rb', line 43

def has_z
  @has_z
end

#srid ⇒ Object (readonly)

Returns the value of attribute srid.



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# File 'lib/active_record/connection_adapters/postgis/spatial_column.rb', line 43

def srid
  @srid
end

Instance Method Details

#limit ⇒ Object 



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# File 'lib/active_record/connection_adapters/postgis/spatial_column.rb', line 53

def limit
  if spatial?
    @limit
  else
    super
  end
end

#spatial? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_record/connection_adapters/postgis/spatial_column.rb', line 61

def spatial?
  @cast_type.respond_to?(:spatial?) && @cast_type.spatial?
end