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)})"
+ "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?
end
end
- class MysqlAdapter
- 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 }
- 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" }
- 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 alter_column_nwr_enum (table_name, column)
- execute "alter table #{table_name} change column #{column} #{column} enum('Node','Way','Relation');"
- end
-
- def alter_primary_key(table_name, new_columns)
- execute("alter table #{table_name} drop primary key, add primary key (#{new_columns.join(',')})")
- end
- end
-
class PostgreSQLAdapter
- if PostgreSQLAdapter.public_instance_methods(false).include?('native_database_types')
- alias_method :old_native_database_types, :native_database_types
- end
+ alias_method :old_native_database_types, :native_database_types
def native_database_types
types = old_native_database_types
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
def innodb_option
return ""
end
-
+
def change_engine (table_name, engine)
end
execute "CREATE INDEX #{table_name}_#{column}_idx on #{table_name} (#{column})"
end
- def alter_column_nwr_enum (table_name, column)
- response = select_one("select count(*) as count from pg_type where typname = 'nwr_enum'")
- if response['count'] == "0" #yep, as a string
- execute "create type nwr_enum as ENUM ('Node', 'Way', 'Relation')"
- end
- execute "alter table #{table_name} drop #{column}"
- execute "alter table #{table_name} add #{column} nwr_enum"
+ 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) }
+ if Hash === options and options[:lowercase]
+ quoted_column_names = quoted_column_names.map { |e| "LOWER(#{e})" }
+ 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
end
end
end
projects / rails.git / blobdiff