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[rails.git] / lib / migrate.rb

diff --git a/lib/migrate.rb b/lib/migrate.rb
index 4cbabd6c08c225ef77b2f567cbf8e5cd17e6e019..81cdd4d0541bc485f362c87f4b40b995466b21f6 100644 (file)
--- a/lib/migrate.rb
+++ b/lib/migrate.rb
@@ -1,37 +1,206 @@
 module ActiveRecord
   module ConnectionAdapters
     module SchemaStatements
 module ActiveRecord
   module ConnectionAdapters
     module SchemaStatements

+      def quote_column_names(column_name)
+        Array(column_name).map { |e| quote_column_name(e) }.join(", ")
+      end
+

       def add_primary_key(table_name, column_name, options = {})
         column_names = Array(column_name)
         quoted_column_names = column_names.map { |e| quote_column_name(e) }.join(", ")
         execute "ALTER TABLE #{table_name} ADD PRIMARY KEY (#{quoted_column_names})"
       end
 
       def add_primary_key(table_name, column_name, options = {})
         column_names = Array(column_name)
         quoted_column_names = column_names.map { |e| quote_column_name(e) }.join(", ")
         execute "ALTER TABLE #{table_name} ADD PRIMARY KEY (#{quoted_column_names})"
       end
 

-      alias_method :old_add_column_options!, :add_column_options!
+      def remove_primary_key(table_name)
+        execute "ALTER TABLE #{table_name} DROP PRIMARY KEY"
+      end

 
 

-      def add_column_options!(sql, options)
-        old_add_column_options!(sql, options)
-        sql << " #{options[:options]}"
+      def add_foreign_key(table_name, column_name, reftbl, refcol = nil)
+        execute "ALTER TABLE #{table_name} ADD " +
+         "FOREIGN KEY (#{quote_column_names(column_name)}) " +
+         "REFERENCES #{reftbl} (#{quote_column_names(refcol || column_name)})"
+      end
+
+      def remove_foreign_key(table_name, column_name, reftbl, refcol = nil)
+        execute "ALTER TABLE #{table_name} DROP " +
+          "CONSTRAINT #{table_name}_#{column_name[0]}_fkey"

       end
 
       alias_method :old_options_include_default?, :options_include_default?
 
       def options_include_default?(options)
       end
 
       alias_method :old_options_include_default?, :options_include_default?
 
       def options_include_default?(options)

-        old_options_include_default?(options) && !(options[:options] =~ /AUTO_INCREMENT/i)
+        return false if options[:options] =~ /AUTO_INCREMENT/i
+        return old_options_include_default?(options)
+      end
+
+      alias_method :old_add_column_options!, :add_column_options!
+
+      def add_column_options!(sql, options)
+        sql << " UNSIGNED" if options[:unsigned]
+        old_add_column_options!(sql, options)
+        sql << " #{options[:options]}"

       end
     end
 
     class MysqlAdapter
       end
     end
 
     class MysqlAdapter

-      alias_method :old_native_database_types, :native_database_types
+      if MysqlAdapter.public_instance_methods(false).include?('native_database_types')
+        alias_method :old_native_database_types, :native_database_types
+      end

 
       def native_database_types
         types = old_native_database_types
         types[:bigint] = { :name => "bigint", :limit => 20 }
 
       def native_database_types
         types = old_native_database_types
         types[:bigint] = { :name => "bigint", :limit => 20 }

+        types[:double] = { :name => "double" }
+        types[:integer_pk] = { :name => "integer DEFAULT NULL auto_increment PRIMARY KEY" }
+        types[:bigint_pk] = { :name => "bigint(20) DEFAULT NULL auto_increment PRIMARY KEY" }
+        types[:bigint_pk_64] = { :name => "bigint(64) DEFAULT NULL auto_increment PRIMARY KEY" }
+        types[:bigint_auto_64] = { :name => "bigint(64) DEFAULT NULL auto_increment" }
+        types[:bigint_auto_11] = { :name => "bigint(11) DEFAULT NULL auto_increment" }
+        types[:bigint_auto_20] = { :name => "bigint(20) DEFAULT NULL auto_increment" }
+        types[:four_byte_unsigned] = { :name=> "integer unsigned" }
+        types[:inet] = { :name=> "integer unsigned" }
+
+        enumerations.each do |e,v|
+          types[e.to_sym]= { :name => "enum('#{v.join '\',\''}')" }
+        end
+
+        types
+      end
+
+      def change_column(table_name, column_name, type, options = {})
+        unless options_include_default?(options)
+          options[:default] = select_one("SHOW COLUMNS FROM #{table_name} LIKE '#{column_name}'")["Default"]
+
+          unless type == :string or type == :text
+            options.delete(:default) if options[:default] = "";
+          end
+        end
+
+        change_column_sql = "ALTER TABLE #{table_name} CHANGE #{column_name} #{column_name} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"
+        add_column_options!(change_column_sql, options)
+        execute(change_column_sql) 
+      end
+
+      def myisam_table
+        return { :id => false, :force => true, :options => "ENGINE=MyIsam" }
+      end
+
+      def innodb_table
+        return { :id => false, :force => true, :options => "ENGINE=InnoDB" }
+      end
+
+      def innodb_option
+        return "ENGINE=InnoDB"
+      end
+
+      def change_engine (table_name, engine)
+        execute "ALTER TABLE #{table_name} ENGINE = #{engine}"
+      end
+
+      def add_fulltext_index (table_name, column)
+        execute "CREATE FULLTEXT INDEX `#{table_name}_#{column}_idx` ON `#{table_name}` (`#{column}`)"
+      end
+
+      def enumerations
+        @enumerations ||= Hash.new
+      end
+
+      def create_enumeration (enumeration_name, values)
+        enumerations[enumeration_name] = values
+      end
+
+      def drop_enumeration (enumeration_name)
+        enumerations.delete(enumeration_name)
+      end
+
+      def alter_primary_key(table_name, new_columns)
+        execute("alter table #{table_name} drop primary key, add primary key (#{new_columns.join(',')})")
+      end
+
+      def interval_constant(interval)
+        "'#{interval}'"
+      end
+    end
+
+    class PostgreSQLAdapter
+      if PostgreSQLAdapter.public_instance_methods(false).include?('native_database_types')
+        alias_method :old_native_database_types, :native_database_types
+      end
+
+      def native_database_types
+        types = old_native_database_types
+        types[:double] = { :name => "double precision" }
+        types[:integer_pk] = { :name => "serial PRIMARY KEY" }
+        types[:bigint_pk] = { :name => "bigserial PRIMARY KEY" }
+        types[:bigint_pk_64] = { :name => "bigserial PRIMARY KEY" }
+        types[:bigint_auto_64] = { :name => "bigint" } #fixme: need autoincrement?
+        types[:bigint_auto_11] = { :name => "bigint" } #fixme: need autoincrement?
+        types[:bigint_auto_20] = { :name => "bigint" } #fixme: need autoincrement?
+        types[:four_byte_unsigned] = { :name => "bigint" } # meh
+        types[:inet] = { :name=> "inet" }
+
+        enumerations.each_key do |e|
+          types[e.to_sym]= { :name => e }
+        end
+

         types
       end
         types
       end

+
+      def myisam_table
+        return { :id => false, :force => true, :options => ""}
+      end
+
+      def innodb_table
+        return { :id => false, :force => true, :options => ""}
+      end
+
+      def innodb_option
+        return ""
+      end
+ 
+      def change_engine (table_name, engine)
+      end
+
+      def add_fulltext_index (table_name, column)
+        execute "CREATE INDEX #{table_name}_#{column}_idx on #{table_name} (#{column})"
+      end
+
+      def enumerations
+        @enumerations ||= Hash.new
+      end
+
+      def create_enumeration (enumeration_name, values)
+        enumerations[enumeration_name] = values
+        execute "create type #{enumeration_name} as enum ('#{values.join '\',\''}')"
+      end
+
+      def drop_enumeration (enumeration_name)
+        execute "drop type #{enumeration_name}"
+        enumerations.delete(enumeration_name)
+      end
+
+      def alter_primary_key(table_name, new_columns)
+        execute "alter table #{table_name} drop constraint #{table_name}_pkey; alter table #{table_name} add primary key (#{new_columns.join(',')})"
+      end
+
+      def interval_constant(interval)
+        "'#{interval}'::interval"
+      end
+
+      def add_index(table_name, column_name, options = {})
+        column_names = Array(column_name)
+        index_name   = index_name(table_name, :column => column_names)
+
+        if Hash === options # legacy support, since this param was a string
+          index_type = options[:unique] ? "UNIQUE" : ""
+          index_name = options[:name] || index_name
+          index_method = options[:method] || "BTREE"
+        else
+          index_type = options
+        end
+        quoted_column_names = column_names.map { |e| quote_column_name(e) }.join(", ")
+        execute "CREATE #{index_type} INDEX #{quote_column_name(index_name)} ON #{quote_table_name(table_name)} USING #{index_method} (#{quoted_column_names})"
+      end

     end
   end
 end
     end
   end
 end

-
-myisam_table = { :id => false, :force => true, :options => "ENGINE=MyIsam" }
-innodb_table = { :id => false, :force => true, :options => "ENGINE=InnoDB" }