• add model to parse scim queries

Spencer Alan
1 parent 0f134a87
Showing 1 changed file with 45 additions and 0 deletions Show diff stats
app/models/scim_rails/scim_query_parser.rb
@@ -0,0 +1,45 @@
+module ScimRails
+  class ScimQueryParser
+    attr_accessor :query_elements
+
+    def initialize(query_string)
+      self.query_elements = query_string.split(" ")
+    end
+
+    def attribute
+      attribute = query_elements.dig(0)
+      raise ScimRails::ExceptionHandler::InvalidQuery if attribute.blank?
+      attribute = attribute.to_sym
+
+      mapped_attribute = attribute_mapping(attribute)
+      raise ScimRails::ExceptionHandler::InvalidQuery if mapped_attribute.blank?
+      mapped_attribute
+    end
+
+    def operator
+      sql_comparison_operator(query_elements.dig(1))
+    end
+
+    def parameter
+      parameter = query_elements.dig(2)
+      return if parameter.blank?
+      parameter.gsub(/"/, "")
+    end
+
+    private
+
+    def attribute_mapping(attribute)
+      ScimRails.config.queryable_user_attributes[attribute]
+    end
+
+    def sql_comparison_operator(element)
+      case element
+      when "eq"
+        "="
+      else
+        # TODO: implement additional query filters
+        raise ScimRails::ExceptionHandler::InvalidQuery
+      end
+    end
+  end
+end
...	...	@@ -0,0 +1,45 @@
	1	+module ScimRails
	2	+ class ScimQueryParser
	3	+ attr_accessor :query_elements
	4	+
	5	+ def initialize(query_string)
	6	+ self.query_elements = query_string.split(" ")
	7	+ end
	8	+
	9	+ def attribute
	10	+ attribute = query_elements.dig(0)
	11	+ raise ScimRails::ExceptionHandler::InvalidQuery if attribute.blank?
	12	+ attribute = attribute.to_sym
	13	+
	14	+ mapped_attribute = attribute_mapping(attribute)
	15	+ raise ScimRails::ExceptionHandler::InvalidQuery if mapped_attribute.blank?
	16	+ mapped_attribute
	17	+ end
	18	+
	19	+ def operator
	20	+ sql_comparison_operator(query_elements.dig(1))
	21	+ end
	22	+
	23	+ def parameter
	24	+ parameter = query_elements.dig(2)
	25	+ return if parameter.blank?
	26	+ parameter.gsub(/"/, "")
	27	+ end
	28	+
	29	+ private
	30	+
	31	+ def attribute_mapping(attribute)
	32	+ ScimRails.config.queryable_user_attributes[attribute]
	33	+ end
	34	+
	35	+ def sql_comparison_operator(element)
	36	+ case element
	37	+ when "eq"
	38	+ "="
	39	+ else
	40	+ # TODO: implement additional query filters
	41	+ raise ScimRails::ExceptionHandler::InvalidQuery
	42	+ end
	43	+ end
	44	+ end
	45	+end
...	...