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# frozen-string-literal: true
Sequel::JDBC.load_driver('Java::oracle.jdbc.driver.OracleDriver')
require_relative '../shared/oracle'
require_relative 'transactions'
module Sequel
module JDBC
Sequel.synchronize do
DATABASE_SETUP[:oracle] = proc do |db|
db.extend(Sequel::JDBC::Oracle::DatabaseMethods)
db.dataset_class = Sequel::JDBC::Oracle::Dataset
Java::oracle.jdbc.driver.OracleDriver
end
end
module Oracle
JAVA_BIG_DECIMAL_CONSTRUCTOR = java.math.BigDecimal.java_class.constructor(Java::long).method(:new_instance)
ORACLE_DECIMAL = Object.new
def ORACLE_DECIMAL.call(r, i)
if v = r.getBigDecimal(i)
i = v.long_value
if v == JAVA_BIG_DECIMAL_CONSTRUCTOR.call(i)
i
else
::Kernel::BigDecimal(v.to_string)
end
end
end
ORACLE_CLOB = Object.new
def ORACLE_CLOB.call(r, i)
return unless clob = r.getClob(i)
str = clob.getSubString(1, clob.length)
clob.freeTemporary if clob.isTemporary
str
end
module DatabaseMethods
include Sequel::Oracle::DatabaseMethods
include Sequel::JDBC::Transactions
def self.extended(db)
db.instance_exec do
@autosequence = opts[:autosequence]
@primary_key_sequences = {}
end
end
private
# Oracle exception handling with SQLState is less accurate than with regexps.
def database_exception_use_sqlstates?
false
end
def disconnect_error?(exception, opts)
super || exception.message =~ /\AClosed Connection/
end
# Default the fetch size for statements to 100, similar to the oci8-based oracle adapter.
def default_fetch_size
100
end
def last_insert_id(conn, opts)
unless sequence = opts[:sequence]
if t = opts[:table]
sequence = sequence_for_table(t)
end
end
if sequence
sql = "SELECT #{literal(sequence)}.currval FROM dual"
statement(conn) do |stmt|
begin
rs = log_connection_yield(sql, conn){stmt.executeQuery(sql)}
rs.next
rs.getLong(1)
rescue java.sql.SQLException
nil
end
end
end
end
# Primary key indexes appear to start with sys_ on Oracle
def primary_key_index_re
/\Asys_/i
end
def schema_parse_table(*)
sch = super
sch.each do |c, s|
if s[:type] == :decimal && s[:scale] == -127
s[:type] = :integer
elsif s[:db_type] == 'DATE'
s[:type] = :datetime
end
end
sch
end
def schema_parse_table_skip?(h, schema)
super || (h[:table_schem] != current_user unless schema)
end
# As of Oracle 9.2, releasing savepoints is no longer supported.
def supports_releasing_savepoints?
false
end
def setup_type_convertor_map
super
@type_convertor_map[:OracleDecimal] = ORACLE_DECIMAL
@type_convertor_map[:OracleClob] = ORACLE_CLOB
end
end
class Dataset < JDBC::Dataset
include Sequel::Oracle::DatasetMethods
NUMERIC_TYPE = Java::JavaSQL::Types::NUMERIC
TIMESTAMP_TYPE = Java::JavaSQL::Types::TIMESTAMP
CLOB_TYPE = Java::JavaSQL::Types::CLOB
TIMESTAMPTZ_TYPES = [Java::oracle.jdbc.OracleTypes::TIMESTAMPTZ, Java::oracle.jdbc.OracleTypes::TIMESTAMPLTZ].freeze
def type_convertor(map, meta, type, i)
case type
when NUMERIC_TYPE
if meta.getScale(i) == 0
map[:OracleDecimal]
else
super
end
when *TIMESTAMPTZ_TYPES
map[TIMESTAMP_TYPE]
when CLOB_TYPE
map[:OracleClob]
else
super
end
end
end
end
end
end
|
