Oracle binary fixtures; pull fixture insertion into the adapters. Closes #7987.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6859 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Oracle: support binary fixtures.  #7987 [Michael Schoen]
+
+* Fixtures: pull fixture insertion into the database adapters.  #7987 [Michael Schoen]
+
 * Announce migration versions as they're performed.  [Jeremy Kemper]
 
 * find gracefully copes with blank :conditions.  #7599 [Dan Manges, johnnyb]

activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb

@@ -119,6 +119,12 @@ def reset_sequence!(table, column, sequence = nil)
         # Do nothing by default.  Implement for PostgreSQL, Oracle, ...
       end
 
+      # Inserts the given fixture into the table. Overriden in adapters that require
+      # something beyond a simple insert (eg. Oracle).
+      def insert_fixture(fixture, table_name)
+        execute "INSERT INTO #{table_name} (#{fixture.key_list}) VALUES (#{fixture.value_list})", 'Fixture Insert'
+      end
+
       protected
         # Returns an array of record hashes with the column names as keys and
         # column values as values.

activerecord/lib/active_record/connection_adapters/oracle_adapter.rb

@@ -44,17 +44,9 @@ def self.oci_connection(config) #:nodoc:
       # After setting large objects to empty, select the OCI8::LOB
       # and write back the data.
       after_save :write_lobs
-      def write_lobs() #:nodoc:
+      def write_lobs #:nodoc:
         if connection.is_a?(ConnectionAdapters::OracleAdapter)
-          self.class.columns.select { |c| c.sql_type =~ /LOB$/i }.each { |c|
-            value = self[c.name]
-            value = value.to_yaml if unserializable_attribute?(c.name, c)
-            next if value.nil?  || (value == '')
-            lob = connection.select_one(
-              "SELECT #{c.name} FROM #{self.class.table_name} WHERE #{self.class.primary_key} = #{quote_value(id)}",
-              'Writable Large Object')[c.name]
-            lob.write value
-          }
+          connection.write_lobs(self.class.table_name, self.class, attributes)
         end
       end
 
@@ -273,6 +265,30 @@ def default_sequence_name(table, column) #:nodoc:
         end
 
 
+        # Inserts the given fixture into the table. Overriden to properly handle lobs.
+        def insert_fixture(fixture, table_name)
+          super
+
+          klass = fixture.class_name.constantize rescue nil
+          if klass.respond_to?(:ancestors) && klass.ancestors.include?(ActiveRecord::Base)
+            write_lobs(table_name, klass, fixture)
+          end
+        end
+
+        # Writes LOB values from attributes, as indicated by the LOB columns of klass.
+        def write_lobs(table_name, klass, attributes)
+          id = quote(attributes[klass.primary_key])
+          klass.columns.select { |col| col.sql_type =~ /LOB$/i }.each do |col|
+            value = attributes[col.name]
+            value = value.to_yaml if col.text? && klass.serialized_attributes[col.name]
+            next if value.nil?  || (value == '')
+            lob = select_one("SELECT #{col.name} FROM #{table_name} WHERE #{klass.primary_key} = #{id}",
+                             'Writable Large Object')[col.name]
+            lob.write value
+          end
+        end
+
+
         # SCHEMA STATEMENTS ========================================
         #
         # see: abstract/schema_statements.rb

activerecord/lib/active_record/fixtures.rb

@@ -290,7 +290,7 @@ def delete_existing_fixtures
 
   def insert_fixtures
     values.each do |fixture|
-      @connection.execute "INSERT INTO #{@table_name} (#{fixture.key_list}) VALUES (#{fixture.value_list})", 'Fixture Insert'
+      @connection.insert_fixture fixture, @table_name
     end
   end
 
@@ -381,6 +381,8 @@ class FixtureError < StandardError#:nodoc:
   class FormatError < FixtureError#:nodoc:
   end
 
+  attr_reader :class_name
+
   def initialize(fixture, class_name)
     case fixture
       when Hash, YAML::Omap

activerecord/test/binary_test.rb

@@ -20,7 +20,7 @@ def test_truth
   # Without using prepared statements, it makes no sense to test
   # BLOB data with DB2 or Firebird, because the length of a statement
   # is limited to 32KB.
-  unless %w(SQLServer Sybase DB2 Oracle Firebird).include? ActiveRecord::Base.connection.adapter_name
+  unless current_adapter?(:SQLServerAdapter, :SybaseAdapter, :DB2Adapter, :FirebirdAdapter)
     def test_load_save
       bin = Binary.new
       bin.data = @data