X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/4adeeb51adaecbb1dddf07c0f5253de050963e35..f8fccbf8beec0ef936b9dbbb168232d553b96ac3:/lib/migrate.rb

diff --git a/lib/migrate.rb b/lib/migrate.rb
index 38f8db6b3..7f8d33693 100644
--- a/lib/migrate.rb
+++ b/lib/migrate.rb
@@ -1,94 +1,143 @@
 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})"
+    class PostgreSQLAdapter
+      class SchemaCreation
+        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
 
-      def remove_primary_key(table_name)
-        execute "ALTER TABLE #{table_name} DROP PRIMARY KEY"
-      end
+      module SchemaStatements
+        def quote_column_names(column_name)
+          Array(column_name).map { |e| quote_column_name(e) }.join(", ")
+        end
 
-      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 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_options_include_default?, :options_include_default?
+        def remove_primary_key(table_name)
+          execute "ALTER TABLE #{table_name} DROP PRIMARY KEY"
+        end
 
-      def options_include_default?(options)
-        return false if options[:options] =~ /AUTO_INCREMENT/i
-        return old_options_include_default?(options)
-      end
+        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
 
-      alias_method :old_add_column_options!, :add_column_options!
+        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
 
-      def add_column_options!(sql, options)
-        sql << " UNSIGNED" if options[:unsigned]
-        old_add_column_options!(sql, options)
-        sql << " #{options[:options]}"
+#        alias_method :old_options_include_default?, :options_include_default?
+#
+#        def options_include_default?(options)
+#          return false if options[:options] =~ /AUTO_INCREMENT/i
+#          return old_options_include_default?(options)
+#        end
       end
-    end
 
-    class MysqlAdapter
       alias_method :old_native_database_types, :native_database_types
 
       def native_database_types
         types = old_native_database_types
-        types[:bigint] = { :name => "bigint", :limit => 20 }
-        types[:double] = { :name => "double" }
-        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 NOT NULL" }
-        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
+        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
 
-        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) 
+        types
       end
 
       def myisam_table
-        return { :id => false, :force => true, :options => "ENGINE=MyIsam" }
+        return { :id => false, :force => true, :options => ""}
       end
 
       def innodb_table
-        return { :id => false, :force => true, :options => "ENGINE=InnoDB" }
+        return { :id => false, :force => true, :options => ""}
       end
 
       def innodb_option
-        return "ENGINE=InnoDB"
+        return ""
       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}`)"
+        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 rename_enumeration(old_name, new_name)
+        execute "ALTER TYPE #{quote_table_name(old_name)} RENAME TO #{quote_table_name(new_name)}"
+      end
+
+      def alter_primary_key(table_name, new_columns)
+        execute "ALTER TABLE #{table_name} DROP CONSTRAINT #{table_name}_pkey"
+        execute "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) }
+        if Hash === options and options[:lowercase]
+          quoted_column_names = quoted_column_names.map { |e| "LOWER(#{e})" }
+        end
+        if Hash === options and options[:columns]
+          quoted_column_names = quoted_column_names + Array[options[:columns]]
+        end
+        quoted_column_names = quoted_column_names.join(", ")
+
+        execute "CREATE #{index_type} INDEX #{quote_column_name(index_name)} ON #{quote_table_name(table_name)} USING #{index_method} (#{quoted_column_names})"
       end
 
-      def alter_column_nwr_enum (table_name, column)
-        execute "alter table #{table_name} change column #{column} #{column} enum('node','way','relation');"
+      def rename_index(table_name, old_name, new_name)
+        execute "ALTER INDEX #{quote_table_name(old_name)} RENAME TO #{quote_table_name(new_name)}"
       end
     end
   end