Class: ActiveRecord::ConnectionAdapters::OracleEnhancedOCIConnection

Inherits:
OracleEnhancedConnection show all
Defined in:
lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb

Overview

OCI database interface for MRI

Instance Attribute Summary

Attributes inherited from OracleEnhancedConnection

#raw_connection

Instance Method Summary collapse

Methods inherited from OracleEnhancedConnection

create, #oracle_downcase

Constructor Details

#initialize(config) ⇒ OracleEnhancedOCIConnection

Returns a new instance of OracleEnhancedOCIConnection.



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 29

def initialize(config)
  @raw_connection = OCI8EnhancedAutoRecover.new(config, OracleEnhancedOCIFactory)
end

Instance Method Details

#active? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 71

def active?
  @raw_connection.active?
end

#auto_retry ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 33

def auto_retry
  @raw_connection.auto_retry if @raw_connection
end

#auto_retry=(value) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 37

def auto_retry=(value)
  @raw_connection.auto_retry = value if @raw_connection
end

#autocommit=(value) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 58

def autocommit=(value)
  @raw_connection.autocommit = value
end

#autocommit? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 54

def autocommit?
  @raw_connection.autocommit?
end

#commit ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 46

def commit
  @raw_connection.commit
end

#describe(name) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 170

def describe(name)
  quoted_name = OracleEnhancedAdapter.valid_table_name?(name) ? name : "\"#{name}\""
  @raw_connection.describe(quoted_name)
rescue OCIException => e
  raise OracleEnhancedConnectionException, e.message
end

#exec(sql, *bindvars, &block) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 81

def exec(sql, *bindvars, &block)
  @raw_connection.exec(sql, *bindvars, &block)
end

#logoff ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 41

def logoff
  @raw_connection.logoff
  @raw_connection.active = false
end

#ping ⇒ Object

Checks connection, returns true if active. Note that ping actively checks the connection, while #active? simply returns the last known state.



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 65

def ping
  @raw_connection.ping
rescue OCIException => e
  raise OracleEnhancedConnectionException, e.message
end

#reset! ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 75

def reset!
  @raw_connection.reset!
rescue OCIException => e
  raise OracleEnhancedConnectionException, e.message
end

#rollback ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 50

def rollback
  @raw_connection.rollback
end

#select(sql, name = nil, return_column_names = false) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 85

def select(sql, name = nil, return_column_names = false)
  cursor = @raw_connection.exec(sql)
  cols = []
  # Ignore raw_rnum_ which is used to simulate LIMIT and OFFSET
  cursor.get_col_names.each do |col_name|
    col_name = oracle_downcase(col_name)
    cols << col_name unless col_name == 'raw_rnum_'
  end
  # Reuse the same hash for all rows
  column_hash = {}
  cols.each {|c| column_hash[c] = nil}
  rows = []
  get_lob_value = !(name == 'Writable Large Object')

  while row = cursor.fetch
    hash = column_hash.dup

    cols.each_with_index do |col, i|
      hash[col] =
        case v = row[i]
        # RSI: added emulate_integers_by_column_name functionality
        when Float
          # if OracleEnhancedAdapter.emulate_integers_by_column_name && OracleEnhancedAdapter.is_integer_column?(col)
          #   v.to_i
          # else
          #   v
          # end
          v == (v_to_i = v.to_i) ? v_to_i : v
        # ruby-oci8 2.0 returns OraNumber - convert it to Integer or BigDecimal
        when OraNumber
          v == (v_to_i = v.to_i) ? v_to_i : BigDecimal.new(v.to_s)
        when String
          v
        when OCI8::LOB
          if get_lob_value
            data = v.read
            # In Ruby 1.9.1 always change encoding to ASCII-8BIT for binaries
            data.force_encoding('ASCII-8BIT') if data.respond_to?(:force_encoding) && v.is_a?(OCI8::BLOB)
            data
          else
            v
          end
        # ruby-oci8 1.0 returns OraDate
        when OraDate
          # RSI: added emulate_dates_by_column_name functionality
          if OracleEnhancedAdapter.emulate_dates && (v.hour == 0 && v.minute == 0 && v.second == 0)
            v.to_date
          else
            # code from Time.time_with_datetime_fallback
            begin
              Time.send(Base.default_timezone, v.year, v.month, v.day, v.hour, v.minute, v.second)
            rescue
              offset = Base.default_timezone.to_sym == :local ? ::DateTime.local_offset : 0
              ::DateTime.civil(v.year, v.month, v.day, v.hour, v.minute, v.second, offset)
            end
          end
        # ruby-oci8 2.0 returns Time or DateTime
        when Time, DateTime
          if OracleEnhancedAdapter.emulate_dates && (v.hour == 0 && v.min == 0 && v.sec == 0)
            v.to_date
          else
            # recreate Time or DateTime using Base.default_timezone
            begin
              Time.send(Base.default_timezone, v.year, v.month, v.day, v.hour, v.min, v.sec)
            rescue
              offset = Base.default_timezone.to_sym == :local ? ::DateTime.local_offset : 0
              ::DateTime.civil(v.year, v.month, v.day, v.hour, v.min, v.sec, offset)
            end
          end
        else v
        end
    end

    rows << hash
  end

  return_column_names ? [rows, cols] : rows
ensure
  cursor.close if cursor
end

#write_lob(lob, value, is_binary = false) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_oci_connection.rb', line 166

def write_lob(lob, value, is_binary = false)
  lob.write value
end