Module: Torque::PostgreSQL::Adapter::DatabaseStatements
- Included in:
- Torque::PostgreSQL::Adapter
- Defined in:
- lib/torque/postgresql/adapter/database_statements.rb
Constant Summary collapse
- EXTENDED_DATABASE_TYPES =
%i(enum interval)
Instance Method Summary collapse
-
#configure_connection ⇒ Object
Configure the interval format.
-
#extended_types ⇒ Object
Get the list of extended types.
-
#initialize_type_map(m) ⇒ Object
Change some of the types being mapped.
-
#load_additional_types(type_map, oids = nil) ⇒ Object
Add the composite types to be loaded too.
-
#type_exists?(name) ⇒ Boolean
(also: #data_type_exists?)
Returns true if type exists.
-
#user_defined_types(category = nil) ⇒ Object
Gets a list of user defined types.
-
#valid_type?(type) ⇒ Boolean
Check if a given type is valid.
Instance Method Details
#configure_connection ⇒ Object
Configure the interval format
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# File 'lib/torque/postgresql/adapter/database_statements.rb', line 25 def configure_connection super execute("SET SESSION IntervalStyle TO 'iso_8601'", 'SCHEMA') end |
#extended_types ⇒ Object
Get the list of extended types
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# File 'lib/torque/postgresql/adapter/database_statements.rb', line 14 def extended_types EXTENDED_DATABASE_TYPES end |
#initialize_type_map(m) ⇒ Object
Change some of the types being mapped
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# File 'lib/torque/postgresql/adapter/database_statements.rb', line 31 def initialize_type_map(m) super m.register_type 'interval', OID::Interval.new end |
#load_additional_types(type_map, oids = nil) ⇒ Object
Add the composite types to be loaded too.
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# File 'lib/torque/postgresql/adapter/database_statements.rb', line 37 def load_additional_types(type_map, oids = nil) super filter = "AND a.typelem::integer IN (%s)" % oids.join(", ") if oids query = <<-SQL SELECT a.typelem AS oid, t.typname, t.typelem, t.typdelim, t.typbasetype, t.typtype FROM pg_type t INNER JOIN pg_type a ON (a.oid = t.typarray) LEFT JOIN pg_catalog.pg_namespace n ON n.oid = t.typnamespace WHERE n.nspname NOT IN ('pg_catalog', 'information_schema') AND t.typtype IN ( 'e' ) #{filter} AND NOT EXISTS( SELECT 1 FROM pg_catalog.pg_type el WHERE el.oid = t.typelem AND el.typarray = t.oid ) AND (t.typrelid = 0 OR ( SELECT c.relkind = 'c' FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid )) SQL execute_and_clear(query, 'SCHEMA', []) do |records| records.each do |row| typtype = row['typtype'] type = begin case when typtype == 'e'.freeze then OID::Enum.create(row) end end type_map.register_type row['oid'].to_i, type end end end |
#type_exists?(name) ⇒ Boolean Also known as: data_type_exists?
Returns true if type exists.
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# File 'lib/torque/postgresql/adapter/database_statements.rb', line 19 def type_exists?(name) user_defined_types.key? name.to_s end |
#user_defined_types(category = nil) ⇒ Object
Gets a list of user defined types. You can even choose the typcategory
filter
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# File 'lib/torque/postgresql/adapter/database_statements.rb', line 77 def user_defined_types(category = nil) category_condition = "AND typtype = '#{category}'" unless category.nil? select_all(<<-SQL).rows.to_h SELECT t.typname AS name, CASE t.typtype WHEN 'e' THEN 'enum' END AS type FROM pg_type t LEFT JOIN pg_catalog.pg_namespace n ON n.oid = t.typnamespace WHERE n.nspname NOT IN ('pg_catalog', 'information_schema') #{category_condition} AND NOT EXISTS( SELECT 1 FROM pg_catalog.pg_type el WHERE el.oid = t.typelem AND el.typarray = t.oid ) AND (t.typrelid = 0 OR ( SELECT c.relkind = 'c' FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid )) ORDER BY t.typtype DESC SQL end |
#valid_type?(type) ⇒ Boolean
Check if a given type is valid.
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# File 'lib/torque/postgresql/adapter/database_statements.rb', line 9 def valid_type?(type) super || extended_types.include?(type) end |