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Add migration for quadtiling of node tables.

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This commit is contained in:
Tom Hughes 2007-09-23 13:42:56 +00:00
parent ba6b3f355a
commit cb71c6d57f
1 changed files with 114 additions and 0 deletions
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db/migrate/006_tile_nodes.rb Normal file
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class TileNodes < ActiveRecord::Migration
def self.upgrade_table(from_table, to_table)
execute <<-END_SQL
INSERT INTO #{to_table} (id, latitude, longitude, user_id, visible, tags, timestamp, tile)
SELECT id, ROUND(latitude * 10000000), ROUND(longitude * 10000000),
user_id, visible, tags, timestamp,
tile_for_point(CAST(ROUND(latitude * 10000000) AS UNSIGNED),
CAST(ROUND(longitude * 10000000) AS UNSIGNED))
FROM #{from_table}
END_SQL
end
def self.downgrade_table(from_table, to_table)
execute <<-END_SQL
INSERT INTO #{to_table} (id, latitude, longitude, user_id, visible, tags, timestamp)
SELECT id, latitude / 10000000, longitude / 10000000,
user_id, visible, tags, timestamp
FROM #{from_table}
END_SQL
end
def self.up
rename_table "current_nodes", "current_nodes_v5"
create_table "current_nodes", innodb_table do |t|
t.column "id", :bigint, :limit => 64, :null => false
t.column "latitude", :integer, :null => false
t.column "longitude", :integer, :null => false
t.column "user_id", :bigint, :limit => 20, :null => false
t.column "visible", :boolean, :null => false
t.column "tags", :text, :default => "", :null => false
t.column "timestamp", :datetime, :null => false
t.column "tile", :integer, :null => false
end
add_primary_key "current_nodes", ["id"]
add_index "current_nodes", ["timestamp"], :name => "current_nodes_timestamp_idx"
add_index "current_nodes", ["tile"], :name => "current_nodes_tile_idx"
change_column "current_nodes", "id", :bigint, :limit => 64, :null => false, :options => "AUTO_INCREMENT"
change_column "current_nodes", "tile", :integer, :null => false, :unsigned => true
upgrade_table "current_nodes_v5", "current_nodes"
drop_table "current_nodes_v5"
rename_table "nodes", "nodes_v5"
create_table "nodes", myisam_table do |t|
t.column "id", :bigint, :limit => 64, :null => false
t.column "latitude", :integer, :null => false
t.column "longitude", :integer, :null => false
t.column "user_id", :bigint, :limit => 20, :null => false
t.column "visible", :boolean, :null => false
t.column "tags", :text, :default => "", :null => false
t.column "timestamp", :datetime, :null => false
t.column "tile", :integer, :null => false
end
add_index "nodes", ["id"], :name => "nodes_uid_idx"
add_index "nodes", ["timestamp"], :name => "nodes_timestamp_idx"
add_index "nodes", ["tile"], :name => "nodes_tile_idx"
change_column "nodes", "tile", :integer, :null => false, :unsigned => true
upgrade_table "nodes_v5", "nodes"
drop_table "nodes_v5"
end
def self.down
rename_table "current_nodes", "current_nodes_v6"
create_table "current_nodes", innodb_table do |t|
t.column "id", :bigint, :limit => 64, :null => false
t.column "latitude", :double, :null => false
t.column "longitude", :double, :null => false
t.column "user_id", :bigint, :limit => 20, :null => false
t.column "visible", :boolean, :null => false
t.column "tags", :text, :default => "", :null => false
t.column "timestamp", :datetime, :null => false
end
add_primary_key "current_nodes", ["id"]
add_index "current_nodes", ["latitude", "longitude"], :name => "current_nodes_lat_lon_idx"
add_index "current_nodes", ["timestamp"], :name => "current_nodes_timestamp_idx"
change_column "current_nodes", "id", :bigint, :limit => 64, :null => false, :options => "AUTO_INCREMENT"
downgrade_table "current_nodes_v6", "current_nodes"
drop_table "current_nodes_v6"
rename_table "nodes", "nodes_v6"
create_table "nodes", myisam_table do |t|
t.column "id", :bigint, :limit => 64, :null => false
t.column "latitude", :double, :null => false
t.column "longitude", :double, :null => false
t.column "user_id", :bigint, :limit => 20, :null => false
t.column "visible", :boolean, :null => false
t.column "tags", :text, :default => "", :null => false
t.column "timestamp", :datetime, :null => false
end
add_index "nodes", ["id"], :name => "nodes_uid_idx"
add_index "nodes", ["latitude", "longitude"], :name => "nodes_latlon_idx"
add_index "nodes", ["timestamp"], :name => "nodes_timestamp_idx"
downgrade_table "nodes_v6", "nodes"
drop_table "nodes_v6"
end
end