| 28 | } |
| 29 | |
| 30 | func lookupDatePartEval(part string) func(nano.Ts) int64 { |
| 31 | switch part { |
| 32 | case "day": |
| 33 | return func(ts nano.Ts) int64 { |
| 34 | return int64(ts.Time().Day()) |
| 35 | } |
| 36 | case "dow", "dayofweek": |
| 37 | return func(ts nano.Ts) int64 { |
| 38 | return int64(ts.Time().Weekday()) |
| 39 | } |
| 40 | case "hour": |
| 41 | return func(ts nano.Ts) int64 { |
| 42 | return int64(ts.Time().Hour()) |
| 43 | } |
| 44 | case "microseconds": |
| 45 | return func(ts nano.Ts) int64 { |
| 46 | return int64(ts.Time().Second()*1e6 + ts.Time().Nanosecond()/1e3) |
| 47 | } |
| 48 | case "milliseconds": |
| 49 | return func(ts nano.Ts) int64 { |
| 50 | return int64(ts.Time().Second()*1e3 + ts.Time().Nanosecond()/1e6) |
| 51 | } |
| 52 | case "minute": |
| 53 | return func(ts nano.Ts) int64 { |
| 54 | return int64(ts.Time().Minute()) |
| 55 | } |
| 56 | case "month": |
| 57 | return func(ts nano.Ts) int64 { |
| 58 | return int64(ts.Time().Month()) |
| 59 | } |
| 60 | case "second": |
| 61 | return func(ts nano.Ts) int64 { |
| 62 | return int64(ts.Time().Second()) |
| 63 | } |
| 64 | case "year": |
| 65 | return func(ts nano.Ts) int64 { |
| 66 | return int64(ts.Time().Year()) |
| 67 | } |
| 68 | default: |
| 69 | return nil |
| 70 | } |
| 71 | } |