api06: Merge changesets code from Frederik.

db/migrate/013_add_changesets.rb

@@ -0,0 +1,32 @@
+class AddChangesets < ActiveRecord::Migration
+  def self.up
+    create_table "changesets", innodb_table do |t|
+      t.column "id",             :bigint,   :limit => 20, :null => false
+      t.column "user_id",        :bigint,   :limit => 20, :null => false
+      t.column "created_at",     :datetime,               :null => false
+      t.column "open",           :boolean,                :null => false, :default => true
+      t.column "min_lat",        :integer,                :null => true
+      t.column "max_lat",        :integer,                :null => true
+      t.column "min_lon",        :integer,                :null => true
+      t.column "max_lon",        :integer,                :null => true
+    end
+
+    add_primary_key "changesets", ["id"]
+    # FIXME add indexes?
+
+    change_column "changesets", "id", :bigint, :limit => 20, :null => false, :options => "AUTO_INCREMENT"
+
+    create_table "changeset_tags", innodb_table do |t|
+      t.column "id", :bigint, :limit => 64, :null => false
+      t.column "k",  :string, :default => "", :null => false
+      t.column "v",  :string, :default => "", :null => false
+    end
+
+    add_index "changeset_tags", ["id"], :name => "changeset_tags_id_idx"
+  end
+
+  def self.down
+    drop_table "changesets"
+    drop_table "changeset_tags"
+  end
+end