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Fall back to adding tile numbers the hard way if the MySQL function is

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This commit is contained in:
Tom Hughes 2007-09-28 18:32:11 +00:00
parent dd9ad16303
commit 05602fc9d7
1 changed files with 25 additions and 12 deletions
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35
db/migrate/006_tile_nodes.rb
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@ -1,13 +1,26 @@
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
def self.upgrade_table(from_table, to_table, model)
begin
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
rescue ActiveRecord::StatementInvalid => ex
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, 0
FROM #{from_table}
END_SQL
model.find(:all).each do |n|
n.save!
end
end
end
def self.downgrade_table(from_table, to_table)
@ -40,7 +53,7 @@ class TileNodes < ActiveRecord::Migration
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"
upgrade_table "current_nodes_v5", "current_nodes", Node
drop_table "current_nodes_v5"
@ -63,7 +76,7 @@ class TileNodes < ActiveRecord::Migration
change_column "nodes", "tile", :integer, :null => false, :unsigned => true
upgrade_table "nodes_v5", "nodes"
upgrade_table "nodes_v5", "nodes", OldNode
drop_table "nodes_v5"
end