move some search and query building logic for anothers methods

app/repositories/orient_db/learning_object_repository.rb

@@ -92,33 +92,11 @@ module OrientDb
     #   FULLTEXT ENGINE LUCENE
     #   METADATA {"analyzer":"org.apache.lucene.analysis.br.BrazilianAnalyzer"}
     def search(params)
-      # mount cache_key with params
-      valid_params = %w(query order subject type school_level year)
-      cache_key = "search_result/"
-      valid_params.each do |param|
-        if params[param].class == Array
-          cache_key += params[param].join('-')
-        else
-          cache_key += params[param].to_s
-        end
-        cache_key += '/' unless (param == valid_params.last)
-      end
+      cache_key = build_search_cache_key params
 
       # get results in cache or search
       Rails.cache.fetch(cache_key, expires_in: 10.minutes) do
-        qry = params[:query]
-        order = order_by(params[:order])
-
-        query = "SELECT FROM LearningObject WHERE [name, description, author] LUCENE '#{qry}'"
-        query += " AND out('IsAbout') CONTAINS (name in ['" + params[:subject].join("','") + "'])" unless params[:subject].blank?
-        unless params[:school_level].blank?
-          params[:school_level] << 'Ensino Fundamental Inicial' << 'Ensino Fundamental Final' if params[:school_level].include? 'Ensino Fundamental'
-          query += " AND out('IsAbout') CONTAINS (name in ['" + params[:school_level].join("','") + "'])"
-        end
-        query = "SELECT * FROM (" + query + ") WHERE " + fetch_types(params[:type]) unless params[:type].blank?
-        query = "SELECT * FROM (" + query + ") WHERE " + fetch_year(params[:year]) unless params[:year].blank?
-        query = "SELECT * FROM (" + query + ") ORDER BY #{order}"
-        query = "SELECT @rid.asString(), last_modified FROM (" + query + ")"
+        query = build_search_query params
         connection.query query, limit: 10000
       end
     end
@@ -184,5 +162,36 @@ module OrientDb
       "LearningObject"
     end
 
+    def build_search_query(params={})
+      query = "SELECT FROM LearningObject WHERE [name, description, author] LUCENE '#{params[:query]}'"
+      query += " AND out('IsAbout') CONTAINS (name in ['" + params[:subject].join("','") + "'])" unless params[:subject].blank?
+      unless params[:school_level].blank?
+        params[:school_level] << 'Ensino Fundamental Inicial' << 'Ensino Fundamental Final' if params[:school_level].include? 'Ensino Fundamental'
+        query += " AND out('IsAbout') CONTAINS (name in ['" + params[:school_level].join("','") + "'])"
+      end
+      query = "SELECT * FROM (" + query + ") WHERE " + fetch_types(params[:type]) unless params[:type].blank?
+      query = "SELECT * FROM (" + query + ") WHERE " + fetch_year(params[:year]) unless params[:year].blank?
+      query = "SELECT * FROM (" + query + ") ORDER BY #{order_by(params[:order])}"
+      query = "SELECT @rid.asString(), last_modified FROM (" + query + ")"
+      query
+    end
+
+    def search_params
+      %w(query order subject type school_level year)
+    end
+
+    def build_search_cache_key(params={})
+      cache_key = "search_result/"
+      search_params.each do |param|
+        if params[param].class == Array
+          cache_key += params[param].join('-')
+        else
+          cache_key += params[param].to_s
+        end
+        cache_key += '/' unless (param == search_params.last)
+      end
+      cache_key
+    end
+
   end
 end