field="*_i" type="int" 
field="*_s" type="string" 
field="*_l" type="long" 
field="*_b" type="bool" 
field="*_f" type="float" 
field="*_d" type="double" 
field="*_dt" type="datetime" 

field="*_is" type="int[]" 
field="*_ss" type="string[]" 
field="*_ls" type="long[]" 
field="*_bs" type="bool[]" 
field="*_fs" type="float[]" 
field="*_ds" type="double[]" 
field="*_dts" type="datetime[]"