Class: ActiveRecord::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/active_record/connection_adapters/spatialite_adapter.rb

Overview

ActiveRecord looks for the spatialite_connection factory method in this class.

Class Method Summary collapse

Class Method Details

.spatialite_connection(config_) ⇒ Object

Create a spatialite connection adapter.



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# File 'lib/active_record/connection_adapters/spatialite_adapter.rb', line 55

def self.spatialite_connection(config_)
  unless 'spatialite' == config_[:adapter]
    raise ::ArgumentError, 'adapter name should be "spatialite"'
  end
  unless config_[:database]
    raise ::ArgumentError, "No database file specified. Missing argument: database"
  end

  # Allow database path relative to Rails.root, but only if
  # the database path is not the special path that tells
  # Sqlite to build a database only in memory.
  if defined?(::Rails.root) && ':memory:' != config_[:database]
    config_[:database] = ::File.expand_path(config_[:database], ::Rails.root)
  end

  db_ = ::SQLite3::Database.new(config_[:database], :results_as_hash => true)
  db_.busy_timeout(config_[:timeout]) unless config_[:timeout].nil?

  # Load SpatiaLite
  path_ = config_[:libspatialite]
  if path_ && (!::File.file?(path_) || !::File.readable?(path_))
    raise "Cannot read libspatialite library at #{path_}"
  end
  unless path_
    prefixes_ = ['/usr/local/spatialite', '/usr/local/libspatialite', '/usr/local', '/opt/local', '/sw/local', '/usr']
    suffixes_ = ['so', 'dylib'].join(',')
    prefixes_.each do |prefix_|
      pa_ = ::Dir.glob("#{prefix_}/lib/libspatialite.{#{suffixes_}}")
      if pa_.size > 0
        path_ = pa_.first
        break
      end
    end
  end
  unless path_
    raise 'Cannot find libspatialite in the usual places. Please provide the path in the "libspatialite" config parameter.'
  end
  if db_.respond_to?(:enable_load_extension)
    db_.enable_load_extension(1)
    db_.load_extension(path_)
  end

  ::ActiveRecord::ConnectionAdapters::SpatiaLiteAdapter::MainAdapter.new(db_, logger, config_)
end