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dqe
0.1.35
0.4.15
0.4.14
0.4.13
0.4.12
0.4.11
0.4.10
0.4.9
0.4.8
0.4.7
0.4.6
0.4.5
0.4.4
0.4.3
0.4.2
0.4.1
0.4.0
0.3.25
0.3.24
0.3.23
0.3.22
0.3.21
0.3.20
0.3.19
0.3.18
0.3.17
0.3.16
0.3.15
0.3.14
0.3.13
0.3.12
0.3.11
0.3.10
0.3.9
0.3.8
0.3.7
0.3.6
0.3.5
0.3.4
0.3.3
0.3.2
0.3.1
0.2.2
0.2.1
0.2.0
0.1.36
0.1.35
0.1.34
0.1.33
0.1.22
0.1.21
0.1.20
0.1.10
0.1.9
DalmatinerDB query engine
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src/dqe_math.erl
-module(dqe_math).
-behaviour(dflow).
-export([init/1, describe/1, start/2, emit/3, done/2]).
-record(state, {
op :: atom(),
arg :: number()
}).
init([Op, SubQ, Arg]) ->
{ok, #state{op = Op, arg = Arg}, SubQ}.
describe(#state{op = Op, arg = Arg}) when is_float(Arg) ->
[atom_to_list(Op), "(", float_to_list(Arg), ")"];
describe(#state{op = Op, arg = Arg}) when is_integer(Arg) ->
[atom_to_list(Op), "(", integer_to_list(Arg), ")"].
start({_Start, _Count}, State) ->
{ok, State}.
emit(_Child, {realized, {Data, Resolution}}, State = #state{op = Op, arg = Arg}) ->
{emit, {realized, {mmath_aggr:Op(Data, Arg), Resolution}}, State}.
done({last, _Child}, Aggr) ->
{done, Aggr}.