Eliminate uses of lease_connection

See rails/rails#51353

Author: aidanharan

lib/active_record/connection_adapters/sqlserver/core_ext/attribute_methods.rb

@@ -10,11 +10,13 @@ module AttributeMethods
           private
 
           def attributes_for_update(attribute_names)
-            return super unless self.class.lease_connection.adapter_name == "SQLServer"
+            self.class.with_connection do |connection|
+              return super(attribute_names) unless connection.sqlserver?
 
-            super.reject do |name|
-              column = self.class.columns_hash[name]
-              column && column.respond_to?(:is_identity?) && column.is_identity?
+              super(attribute_names).reject do |name|
+                column = self.class.columns_hash[name]
+                column && column.respond_to?(:is_identity?) && column.is_identity?
+              end
             end
           end
         end

lib/active_record/connection_adapters/sqlserver/core_ext/calculations.rb

@@ -9,10 +9,12 @@ module SQLServer
       module CoreExt
         module Calculations
           def calculate(operation, column_name)
-            if klass.lease_connection.sqlserver?
-              _calculate(operation, column_name)
-            else
-              super
+            klass.with_connection do |connection|
+              if connection.sqlserver?
+                _calculate(operation, column_name)
+              else
+                super
+              end
             end
           end
 
@@ -54,9 +56,10 @@ def _calculate(operation, column_name)
           end
 
           def build_count_subquery(relation, column_name, distinct)
-            return super unless klass.lease_connection.adapter_name == "SQLServer"
-
-            super(relation.unscope(:order), column_name, distinct)
+            klass.with_connection do |connection|
+              relation = relation.unscope(:order) if connection.sqlserver?
+              super(relation, column_name, distinct)
+            end
           end
         end
       end

lib/active_record/connection_adapters/sqlserver/core_ext/explain.rb

@@ -9,12 +9,14 @@ module Explain
           SQLSERVER_STATEMENT_REGEXP = /N'(.+)', N'(.+)', (.+)/
 
           def exec_explain(queries, options = [])
-            return super unless lease_connection.adapter_name == "SQLServer"
+            with_connection do |connection|
+              return super(queries, options) unless connection.sqlserver?
 
-            unprepared_queries = queries.map do |(sql, binds)|
-              [unprepare_sqlserver_statement(sql, binds), binds]
+              unprepared_queries = queries.map do |(sql, binds)|
+                [unprepare_sqlserver_statement(sql, binds), binds]
+              end
+              super(unprepared_queries, options)
             end
-            super(unprepared_queries, options)
           end
 
           private

lib/active_record/connection_adapters/sqlserver/core_ext/finder_methods.rb

@@ -11,10 +11,12 @@ module FinderMethods
           private
 
           def construct_relation_for_exists(conditions)
-            if klass.lease_connection.sqlserver?
-              _construct_relation_for_exists(conditions)
-            else
-              super
+            klass.with_connection do |connection|
+              if connection.sqlserver?
+                _construct_relation_for_exists(conditions)
+              else
+                super
+              end
             end
           end