Add geo_in_rectangle method in select.rb.

lib/groonga/client/request/select.rb

@@ -93,6 +93,11 @@ def query(value)
         #        filter.in_values(:tags, "tag1", "tag2")
         #          # -> --filter 'in_values(tags, "tag1", "tag2")'
         #
+        #   @example: Use geo_in_rectangle function
+        #      request.
+        #        filter.geo_in_rectangle("50x50", "0x100", "100x0")
+        #          # -> --filter 'geo_in_rectangle("50x50", "0x100", "100x0")'
+        #
         #   @example Use geo_in_circle function
         #      request.
         #        filter.geo_in_circle(:location, "100x100", 300)
@@ -218,6 +223,39 @@ def initialize(request)
             @request = request
           end
 
+          # Adds a `geo_in_rectangle` condition then return a new `select`
+          # request object.
+          #
+          # @see http://groonga.org/docs/reference/functions/geo_in_rectangle.html
+          #   geo_in_rectangle function in the Groonga document
+          #
+          # @example: Basic usage
+          #    request.
+          #      filter.geo_in_rectangle("50x50", "0x100", "100x0").
+          #        # -> --filter 'in_values(50x50, 0x100, 100x0)'
+          #
+          # @param point [String] The point to be checked.
+          #    `"#{LONGITUDE}x#{LATITUDE}"` is the point format.
+          #
+          # @param top_left [String] The top left of the condition rectangle.
+          #
+          # @param bottom_right [String] The bottom right of the condition rectangle.
+          #
+          # @return [Groonga::Client::Request::Select]
+          #   The new request with the given condition.
+          #
+          # @since 0.5.0
+          def geo_in_rectangle(point, top_left, bottom_right)
+            expression = "geo_in_rectangle(%{point}"
+            expression << ", %{top_left}"
+            expression << ", %{bottom_right}"
+            expression << ")"
+            @request.filter(expression,
+                            point: point,
+                            top_left: top_left,
+                            bottom_right: bottom_right)
+          end
+
           # Adds a `geo_in_circle` condition then returns a new `select`
           # request object.
           #

test/request/select/test-filter.rb

@@ -202,6 +202,20 @@ def test_empty_string
   end
 
   sub_test_case("Filter") do
+    sub_test_case("#geo_in_rectangle") do
+      def geo_in_rectangle(*args)
+        @request.filter.geo_in_rectangle(*args).to_parameters
+      end
+
+      test("point") do
+        assert_equal({
+                       :table => "posts",
+                       :filter => "geo_in_rectangle(\"50x50\", \"0x100\", \"100x0\")",
+                     },
+                     geo_in_rectangle("50x50", "0x100", "100x0"))
+      end
+    end
+
     sub_test_case("#geo_in_circle") do
       def geo_in_circle(*args)
         @request.filter.geo_in_circle(*args).to_parameters