Class: LayerWriter

Inherits:
Object
  • Object
show all
Defined in:
lib/gis_scraper/layer_writer.rb

Overview

tool to write ArcGIS layer(s) to json or database output rubocop:disable Metrics/ClassLength

Constant Summary collapse

GDAL = 
/GDAL (\d+\.\d+\.\d+)/
V1_11_4 =

trac.osgeo.org/gdal/ticket/6529

Gem::Version.new('1.11.4')
TABLES = 
"SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'"
TYPES = 
['Group ', 'Feature ', 'Annotation ', 'Annotation Sub'].freeze
CONN = 
%i[host port dbname user password].freeze
GEOM_TYPES = 
{ 'esriGeometryPoint' => 'POINT',
'esriGeometryMultipoint' => 'MULTIPOINT',
'esriGeometryLine' => 'LINESTRING',
'esriGeometryPolyline' => 'MULTILINESTRING',
'esriGeometryPolygon' => 'MULTIPOLYGON' }.freeze
OGR = 
'ogr2ogr -overwrite -f "PostgreSQL" PG:'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url:, path: nil, arcrest_opts: {}) ⇒ LayerWriter

Returns a new instance of LayerWriter.



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# File 'lib/gis_scraper/layer_writer.rb', line 24

def initialize(url:, path: nil, arcrest_opts: {})
  @url = url
  @output_path = output_path(path) || config_path
  @arcrest_opts = arcrest_opts
  @conn = conn
  @id = id
  @service_url = service_url
  @layer = layer
  @page_json = @layer.json
  @type = layer_type
  @name = name
end

Instance Attribute Details

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/gis_scraper/layer_writer.rb', line 10

def type
  @type
end

Instance Method Details

#output_json ⇒ Object 



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# File 'lib/gis_scraper/layer_writer.rb', line 37

def output_json
  output(:json)
end

#output_to_db ⇒ Object 



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# File 'lib/gis_scraper/layer_writer.rb', line 41

def output_to_db
  raise 'ogr2ogr executable missing, is GDAL installed and in your PATH?' unless (v_string = ogr2ogr?)
  raise 'ogr2ogr version must be > 1.11.4' unless Gem::Version.new(v_string.match(GDAL)[1]) > V1_11_4

  output(:db)
end