Module: Sequel::JDBC::Postgres::DatabaseMethods

Extended by:
Database::ResetIdentifierMangling
Includes:
Postgres::DatabaseMethods
Defined in:
lib/sequel/adapters/jdbc/postgresql.rb

Overview

Methods to add to Database instances that access PostgreSQL via JDBC.

Constant Summary

Constants included from Postgres::DatabaseMethods

Postgres::DatabaseMethods::FOREIGN_KEY_LIST_ON_DELETE_MAP, Postgres::DatabaseMethods::POSTGRES_DEFAULT_RE, Postgres::DatabaseMethods::PREPARED_ARG_PLACEHOLDER, Postgres::DatabaseMethods::RE_CURRVAL_ERROR, Postgres::DatabaseMethods::SELECT_CUSTOM_SEQUENCE_SQL, Postgres::DatabaseMethods::SELECT_PK_SQL, Postgres::DatabaseMethods::SELECT_SERIAL_SEQUENCE_SQL, Postgres::DatabaseMethods::UNLOGGED

Instance Attribute Summary

Attributes included from Postgres::DatabaseMethods

#conversion_procs

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Database::ResetIdentifierMangling

extended

Methods included from Postgres::DatabaseMethods

#commit_prepared_transaction, #create_function, #create_language, #create_schema, #create_trigger, #database_type, #do, #drop_function, #drop_language, #drop_schema, #drop_trigger, #foreign_key_list, #indexes, #locks, #notify, #primary_key, #primary_key_sequence, #refresh_view, #reset_conversion_procs, #reset_primary_key_sequence, #rollback_prepared_transaction, #serial_primary_key_options, #server_version, #supports_create_table_if_not_exists?, #supports_deferrable_constraints?, #supports_deferrable_foreign_key_constraints?, #supports_drop_table_if_exists?, #supports_partial_indexes?, #supports_prepared_transactions?, #supports_savepoints?, #supports_transaction_isolation_levels?, #supports_transactional_ddl?, #tables, #type_supported?, #views

Class Method Details

.extended(db) ⇒ Object

Add the primary_keys and primary_key_sequences instance variables, so we can get the correct return values for inserted rows.



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# File 'lib/sequel/adapters/jdbc/postgresql.rb', line 18

def self.extended(db)
  super
  db.send(:initialize_postgres_adapter)
end

Instance Method Details

#copy_into(table, opts = OPTS) ⇒ Object

See Sequel::Postgres::Adapter#copy_into



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# File 'lib/sequel/adapters/jdbc/postgresql.rb', line 24

def copy_into(table, opts=OPTS)
  data = opts[:data]
  data = Array(data) if data.is_a?(String)

  if block_given? && data
    raise Error, "Cannot provide both a :data option and a block to copy_into"
  elsif !block_given? && !data
    raise Error, "Must provide either a :data option or a block to copy_into"
  end

  synchronize(opts) do |conn|
    begin
      copy_manager = org.postgresql.copy.CopyManager.new(conn)
      copier = copy_manager.copy_in(copy_into_sql(table, opts))
      if block_given?
        while buf = yield
          copier.writeToCopy(buf.to_java_bytes, 0, buf.length)
        end
      else
        data.each { |d| copier.writeToCopy(d.to_java_bytes, 0, d.length) }
      end
    rescue Exception => e
      copier.cancelCopy
      raise
    ensure
      unless e
        begin
          copier.endCopy
        rescue NativeException => e2
          raise_error(e2)
        end
      end
    end
  end
end

#copy_table(table, opts = OPTS) ⇒ Object

See Sequel::Postgres::Adapter#copy_table



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# File 'lib/sequel/adapters/jdbc/postgresql.rb', line 61

def copy_table(table, opts=OPTS)
  synchronize(opts[:server]) do |conn|
    copy_manager = org.postgresql.copy.CopyManager.new(conn)
    copier = copy_manager.copy_out(copy_table_sql(table, opts))
    begin
      if block_given?
        while buf = copier.readFromCopy
          yield(String.from_java_bytes(buf))
        end
        nil
      else
        b = ''
        while buf = copier.readFromCopy
          b << String.from_java_bytes(buf)
        end
        b
      end
    ensure
      raise DatabaseDisconnectError, "disconnecting as a partial COPY may leave the connection in an unusable state" if buf
    end
  end
end