module ComplexQueryBuilder

Public Class Methods

filter_across_named_region(filter, name) click to toggle source

# File lib/overhelper/complex_query_builder.rb, line 2
def self.filter_across_named_region(filter, name)
  name_filter = CartoCSSHelper::OverpassQueryGenerator.turn_tag_into_overpass_filter(['name', name])
  return "[out:json][timeout:2500];
area" + name_filter + "->.searchArea;
(
  node#{filter}(area.searchArea);
  way#{filter}(area.searchArea);
  relation#{filter}(area.searchArea);
);
out meta;
>;
out meta qt;"
end

two_pass_filter_across_named_region(filter, negative_filter, name) click to toggle source

tag negation is very slow - overpass will sometimes allow this type of query while using tag!=* will cause it to fail

# File lib/overhelper/complex_query_builder.rb, line 17
def self.two_pass_filter_across_named_region(filter, negative_filter, name)
  name_filter = CartoCSSHelper::OverpassQueryGenerator.turn_tag_into_overpass_filter(['name', name])
  return "[out:json][timeout:2500];
area" + name_filter + "->.searchArea;
(
  way#{filter}(area.searchArea);
  node#{filter}(area.searchArea);
  relation#{filter}(area.searchArea);
)-> .a;
(
  way#{negative_filter}(area.searchArea);
  node#{negative_filter}(area.searchArea);
  relation#{negative_filter}(area.searchArea);
) -> .b;
(
.a - .b;
);
out meta;
>;
out meta qt;"
end