Module: HBase::Operation::ScannerOperation

Included in:
Client
Defined in:
lib/hbase/operation/scanner_operation.rb

Instance Method Summary collapse

Instance Method Details

#close_scanner(scanner) ⇒ Object 



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# File 'lib/hbase/operation/scanner_operation.rb', line 34

def close_scanner(scanner)
  begin
    request = Request::ScannerRequest.new(scanner.table_name)
    Response::ScannerResponse.new(delete(request.close(scanner.scanner_id)))
  rescue StandardError => e
    if e.to_s.include?("TableNotFoundException")
      raise TableNotFoundError, "Table #{table_name} Not Found!"
    else
      raise StandardError, e.to_s
    end
  end
end

#get_rows(scanner, limit = 1) ⇒ Object 



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# File 'lib/hbase/operation/scanner_operation.rb', line 17

def get_rows(scanner, limit = 1)
  begin
    request = Request::ScannerRequest.new(scanner.table_name)
    rows = Response::ScannerResponse.new(post(request.get_rows(scanner.scanner_id, limit))).parse
    rows.each do |row|
      row.table_name = scanner.table_name
    end
    rows
  rescue StandardError => e
    if e.to_s.include?("TableNotFoundException")
      raise TableNotFoundError, "Table #{table_name} Not Found!"
    else
      raise StandardError, e.to_s
    end
  end
end

#open_scanner(table_name, columns, start_row = nil, end_row = nil, timestamp = nil) ⇒ Object 



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# File 'lib/hbase/operation/scanner_operation.rb', line 4

def open_scanner(table_name, columns, start_row = nil, end_row = nil, timestamp = nil)
  begin
    request = Request::ScannerRequest.new(table_name)
    scanner_id = Response::ScannerResponse.new(post(request.open(columns, start_row, end_row, timestamp))).get_scanner_id
  rescue Net::ProtocolError => e
    if e.to_s.include?("TableNotFoundException")
      raise TableNotFoundError, "Table #{table_name} Not Found!"
    else
      raise StandardError, e.to_s
    end
  end
end