diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb')
| -rw-r--r-- | activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb | 115 |
1 files changed, 89 insertions, 26 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index 4d5459939b..7dcea375e1 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -8,6 +8,8 @@ require 'arel/visitors/bind_visitor' gem 'pg', '~> 0.11' require 'pg' +require 'ipaddr' + module ActiveRecord module ConnectionHandling # Establishes a connection to the database that's used by all Active Record objects @@ -16,7 +18,7 @@ module ActiveRecord # Forward any unused config params to PGconn.connect. [:statement_limit, :encoding, :min_messages, :schema_search_path, - :schema_order, :adapter, :pool, :wait_timeout, :template, + :schema_order, :adapter, :pool, :checkout_timeout, :template, :reaping_frequency, :insert_returning].each do |key| conn_params.delete key end @@ -79,6 +81,25 @@ module ActiveRecord end end + def string_to_cidr(string) + if string.nil? + nil + elsif String === string + IPAddr.new(string) + else + string + end + + end + + def cidr_to_string(object) + if IPAddr === object + "#{object.to_s}/#{object.instance_variable_get(:@mask_addr).to_s(2).count('1')}" + else + object + end + end + private HstorePair = begin quoted_string = /"[^"\\]*(?:\\.[^"\\]*)*"/ @@ -197,6 +218,13 @@ module ActiveRecord :decimal when 'hstore' :hstore + # Network address types + when 'inet' + :inet + when 'cidr' + :cidr + when 'macaddr' + :macaddr # Character types when /^(?:character varying|bpchar)(?:\(\d+\))?$/ :string @@ -211,9 +239,6 @@ module ActiveRecord # Geometric types when /^(?:point|line|lseg|box|"?path"?|polygon|circle)$/ :string - # Network address types - when /^(?:cidr|inet|macaddr)$/ - :string # Bit strings when /^bit(?: varying)?(?:\(\d+\))?$/ :string @@ -282,6 +307,18 @@ module ActiveRecord def hstore(name, options = {}) column(name, 'hstore', options) end + + def inet(name, options = {}) + column(name, 'inet', options) + end + + def cidr(name, options = {}) + column(name, 'cidr', options) + end + + def macaddr(name, options = {}) + column(name, 'macaddr', options) + end end ADAPTER_NAME = 'PostgreSQL' @@ -301,7 +338,10 @@ module ActiveRecord :boolean => { :name => "boolean" }, :xml => { :name => "xml" }, :tsvector => { :name => "tsvector" }, - :hstore => { :name => "hstore" } + :hstore => { :name => "hstore" }, + :inet => { :name => "inet" }, + :cidr => { :name => "cidr" }, + :macaddr => { :name => "macaddr" } } # Returns 'PostgreSQL' as adapter name for identification purposes. @@ -510,6 +550,11 @@ module ActiveRecord when 'hstore' then super(PostgreSQLColumn.hstore_to_string(value), column) else super end + when IPAddr + case column.sql_type + when 'inet', 'cidr' then super(PostgreSQLColumn.cidr_to_string(value), column) + else super + end when Float if value.infinite? && column.type == :datetime "'#{value.to_s.downcase}'" @@ -549,6 +594,9 @@ module ActiveRecord when Hash return super unless 'hstore' == column.sql_type PostgreSQLColumn.hstore_to_string(value) + when IPAddr + return super unless ['inet','cidr'].includes? column.sql_type + PostgreSQLColumn.cidr_to_string(value) else super end @@ -916,22 +964,22 @@ module ActiveRecord binds = [[nil, table]] binds << [nil, schema] if schema - exec_query(<<-SQL, 'SCHEMA', binds).rows.first[0].to_i > 0 + exec_query(<<-SQL, 'SCHEMA').rows.first[0].to_i > 0 SELECT COUNT(*) FROM pg_class c LEFT JOIN pg_namespace n ON n.oid = c.relnamespace WHERE c.relkind in ('v','r') - AND c.relname = $1 - AND n.nspname = #{schema ? '$2' : 'ANY (current_schemas(false))'} + AND c.relname = '#{table.gsub(/(^"|"$)/,'')}' + AND n.nspname = #{schema ? "'#{schema}'" : 'ANY (current_schemas(false))'} SQL end # Returns true if schema exists. def schema_exists?(name) - exec_query(<<-SQL, 'SCHEMA', [[nil, name]]).rows.first[0].to_i > 0 + exec_query(<<-SQL, 'SCHEMA').rows.first[0].to_i > 0 SELECT COUNT(*) FROM pg_namespace - WHERE nspname = $1 + WHERE nspname = '#{name}' SQL end @@ -1062,8 +1110,8 @@ module ActiveRecord end def serial_sequence(table, column) - result = exec_query(<<-eosql, 'SCHEMA', [[nil, table], [nil, column]]) - SELECT pg_get_serial_sequence($1, $2) + result = exec_query(<<-eosql, 'SCHEMA') + SELECT pg_get_serial_sequence('#{table}', '#{column}') eosql result.rows.first.first end @@ -1140,13 +1188,13 @@ module ActiveRecord # Returns just a table's primary key def primary_key(table) - row = exec_query(<<-end_sql, 'SCHEMA', [[nil, table]]).rows.first + row = exec_query(<<-end_sql, 'SCHEMA').rows.first SELECT DISTINCT(attr.attname) FROM pg_attribute attr INNER JOIN pg_depend dep ON attr.attrelid = dep.refobjid AND attr.attnum = dep.refobjsubid INNER JOIN pg_constraint cons ON attr.attrelid = cons.conrelid AND attr.attnum = cons.conkey[1] WHERE cons.contype = 'p' - AND dep.refobjid = $1::regclass + AND dep.refobjid = '#{table}'::regclass end_sql row && row.first @@ -1216,14 +1264,25 @@ module ActiveRecord # Maps logical Rails types to PostgreSQL-specific data types. def type_to_sql(type, limit = nil, precision = nil, scale = nil) - return super unless type.to_s == 'integer' - return 'integer' unless limit - - case limit - when 1, 2; 'smallint' - when 3, 4; 'integer' - when 5..8; 'bigint' - else raise(ActiveRecordError, "No integer type has byte size #{limit}. Use a numeric with precision 0 instead.") + case type.to_s + when 'binary' + # PostgreSQL doesn't support limits on binary (bytea) columns. + # The hard limit is 1Gb, because of a 32-bit size field, and TOAST. + case limit + when nil, 0..0x3fffffff; super(type) + else raise(ActiveRecordError, "No binary type has byte size #{limit}.") + end + when 'integer' + return 'integer' unless limit + + case limit + when 1, 2; 'smallint' + when 3, 4; 'integer' + when 5..8; 'bigint' + else raise(ActiveRecordError, "No integer type has byte size #{limit}. Use a numeric with precision 0 instead.") + end + else + super end end @@ -1277,11 +1336,15 @@ module ActiveRecord @connection.server_version end + # See http://www.postgresql.org/docs/9.1/static/errcodes-appendix.html + FOREIGN_KEY_VIOLATION = "23503" + UNIQUE_VIOLATION = "23505" + def translate_exception(exception, message) - case exception.message - when /duplicate key value violates unique constraint/ + case exception.result.error_field(PGresult::PG_DIAG_SQLSTATE) + when UNIQUE_VIOLATION RecordNotUnique.new(message, exception) - when /violates foreign key constraint/ + when FOREIGN_KEY_VIOLATION InvalidForeignKey.new(message, exception) else super @@ -1408,7 +1471,7 @@ module ActiveRecord end def last_insert_id_result(sequence_name) #:nodoc: - exec_query("SELECT currval($1)", 'SQL', [[nil, sequence_name]]) + exec_query("SELECT currval('#{sequence_name}')", 'SQL') end # Executes a SELECT query and returns the results, performing any data type |