func (cmd *Command) Exec(c *Crowd) error {
if c.data == nil {
return errors.New("Exec: Data is empty")
}
l := c.Len()
if cmd.CommandType == CommandSum {
fn := cmd.Fns[0]
sum := float64(0)
for i := 0; i < l; i++ {
el := fn(c.Item(i))
if !toolkit.IsNumber(el) {
c.Result.Sum = 0
return nil
}
item := toolkit.ToFloat64(el, 4, toolkit.RoundingAuto)
sum += item
}
c.Result.Sum = sum
} else if cmd.CommandType == CommandMin {
fn := cmd.Fns[0]
var ret interface{}
for i := 0; i < l; i++ {
item := fn(c.Item(i))
if i == 0 {
ret = item
} else if toolkit.Compare(ret, item, "$gt") {
ret = item
}
}
c.Result.Min = ret
} else if cmd.CommandType == CommandMax {
fn := cmd.Fns[0]
var ret interface{}
for i := 0; i < l; i++ {
item := fn(c.Item(i))
if i == 0 {
ret = item
} else if toolkit.Compare(ret, item, "$lt") {
ret = item
}
}
c.Result.Max = ret
} else if cmd.CommandType == CommandAvg {
fn := cmd.Fns[0]
ret := float64(0)
for i := 0; i < l; i++ {
el := fn(c.Item(i))
if !toolkit.IsNumber(el) {
c.Result.Sum = 0
return nil
}
item := toolkit.ToFloat64(el, 4, toolkit.RoundingAuto)
ret += item
}
c.Result.Avg = ret / toolkit.ToFloat64(l, 0, toolkit.RoundingAuto)
} else if cmd.CommandType == CommandWhere {
fn := cmd.Fns[0]
el, _ := toolkit.GetEmptySliceElement(c.data)
tel := reflect.TypeOf(el)
array := reflect.MakeSlice(reflect.SliceOf(tel), 0, 0)
for i := 0; i < l; i++ {
item := c.Item(i)
if fn(item).(bool) {
array = reflect.Append(array, reflect.ValueOf(item))
}
}
c.Result.data = array.Interface()
} else if cmd.CommandType == CommandApply {
fn := cmd.Fns[0]
var array reflect.Value
for i := 0; i < l; i++ {
item := fn(c.Item(i))
if i == 0 {
//toolkit.Println(reflect.ValueOf(item).Type().String())
array = reflect.MakeSlice(reflect.SliceOf(reflect.TypeOf(item)), 0, 0)
} else {
array = reflect.Append(array, reflect.ValueOf(item))
}
}
c.Result.data = array.Interface()
c.data = c.Result.data
} else if cmd.CommandType == CommandGroup {
fng := cmd.Fns[0]
fnc := cmd.Fns[1]
mvs := map[interface{}]reflect.Value{}
//mvo := map[interface{}]interface{}{}
var mvo []KV
for i := 0; i < l; i++ {
item := c.Item(i)
g := fng(item)
gi := fnc(item)
array, exist := mvs[g]
if !exist {
//array = []interface{}{}
array = reflect.MakeSlice(reflect.SliceOf(reflect.TypeOf(gi)), 0, 0)
}
array = reflect.Append(array, reflect.ValueOf(gi))
//toolkit.Println("Data:",g,array)
mvs[g] = array
}
for k, v := range mvs {
mvo = append(mvo, KV{k, v.Interface()})
}
c.Result.data = mvo
c.data = mvo
} else {
return errors.New(string(cmd.CommandType) + ": not yet applicable")
}
return nil
}
func (cmd *Command) Exec(c *Crowd) error {
if c.data == nil {
return errors.New("Exec: Data is empty")
}
l := c.Len()
if cmd.CommandType == CommandSum {
fn := cmd.Fns[0]
sum := float64(0)
for i := 0; i < l; i++ {
el := fn(c.Item(i))
if !toolkit.IsNumber(el) {
c.Result.Sum = 0
return nil
}
item := toolkit.ToFloat64(el, 4, toolkit.RoundingAuto)
sum += item
}
c.Result.Sum = sum
} else if cmd.CommandType == CommandMin {
fn := cmd.Fns[0]
var ret interface{}
for i := 0; i < l; i++ {
item := fn(c.Item(i))
if i == 0 {
ret = item
} else if toolkit.Compare(ret, item, "$gt") {
ret = item
}
}
c.Result.Min = ret
} else if cmd.CommandType == CommandMax {
fn := cmd.Fns[0]
var ret interface{}
for i := 0; i < l; i++ {
item := fn(c.Item(i))
if i == 0 {
ret = item
} else if toolkit.Compare(ret, item, "$lt") {
ret = item
}
}
c.Result.Max = ret
} else if cmd.CommandType == CommandAvg {
fn := cmd.Fns[0]
ret := float64(0)
for i := 0; i < l; i++ {
el := fn(c.Item(i))
if !toolkit.IsNumber(el) {
c.Result.Sum = 0
return nil
}
item := toolkit.ToFloat64(el, 4, toolkit.RoundingAuto)
ret += item
}
c.Result.Avg = toolkit.Div(ret, toolkit.ToFloat64(l, 0, toolkit.RoundingAuto))
} else if cmd.CommandType == CommandWhere {
fn := cmd.Fns[0]
el, _ := toolkit.GetEmptySliceElement(c.data)
tel := reflect.TypeOf(el)
array := reflect.MakeSlice(reflect.SliceOf(tel), 0, 0)
for i := 0; i < l; i++ {
item := c.Item(i)
if fn(item).(bool) {
//toolkit.Printfn("Where data %d: %v", i, item)
array = reflect.Append(array, reflect.ValueOf(item))
}
}
c.Result.data = array.Interface()
} else if cmd.CommandType == CommandApply {
fn := cmd.Fns[0]
var array reflect.Value
for i := 0; i < l; i++ {
item := fn(c.Item(i))
//toolkit.Printfn("Applying data %d of %d: %v", i, l, item)
if i == 0 {
//toolkit.Println(reflect.ValueOf(item).Type().String())
array = reflect.MakeSlice(reflect.SliceOf(reflect.TypeOf(item)), 0, 0)
}
array = reflect.Append(array, reflect.ValueOf(item))
}
c.Result.data = array.Interface()
c.data = c.Result.data
} else if cmd.CommandType == CommandGroup {
fng := cmd.Fns[0]
fnc := cmd.Fns[1]
mvs := map[interface{}]reflect.Value{}
//mvo := map[interface{}]interface{}{}
var mvo []KV
for i := 0; i < l; i++ {
item := c.Item(i)
//toolkit.Printfn("Processing data %d of %d: %v", i, l, item)
g := fng(item)
gi := fnc(item)
array, exist := mvs[g]
if !exist {
//array = []interface{}{}
array = reflect.MakeSlice(reflect.SliceOf(reflect.TypeOf(gi)), 0, 0)
}
array = reflect.Append(array, reflect.ValueOf(gi))
//toolkit.Println("Data:",g,array)
mvs[g] = array
}
for k, v := range mvs {
mvo = append(mvo, KV{k, v.Interface()})
}
c.Result.data = mvo
c.data = mvo
} else if cmd.CommandType == CommandSort {
sorter, e := NewSorter(c.data, cmd.Fns[0])
if e != nil {
return e
}
var direction SortDirection
direction = cmd.Parms.Get("direction", SortAscending).(SortDirection)
c.Result.data = sorter.Sort(direction)
c.data = c.Result.data
} else if cmd.CommandType == CommandJoin {
joinData := cmd.Parms.Get("joindata")
if joinData == nil {
return errors.New("crowd.join: Right side join data is nil")
}
if cmd.FnJoinKey == nil {
cmd.FnJoinKey = func(x, y interface{}) bool {
return x == y
}
}
if cmd.FnJoinSelect == nil {
cmd.FnJoinSelect = func(x, y interface{}) interface{} {
return toolkit.M{}.Set("data1", x).Set("data2", y)
}
}
l1 := toolkit.SliceLen(joinData)
var array reflect.Value
arrayBuilt := false
for i := 0; i < l; i++ {
item1 := c.Item(i)
for i1 := 0; i1 < l1; i1++ {
item2 := toolkit.SliceItem(joinData, i1)
joinOK := cmd.FnJoinKey(item1, item2)
if joinOK {
outObj := cmd.FnJoinSelect(item1, item2)
if !arrayBuilt {
arrayBuilt = true
array = reflect.MakeSlice(reflect.SliceOf(reflect.TypeOf(outObj)), 0, 0)
}
array = reflect.Append(array, reflect.ValueOf(outObj))
}
}
}
if !arrayBuilt {
return errors.New("crowd.join: No match")
}
c.Result.data = array.Interface()
c.data = array.Interface()
} else {
return errors.New(string(cmd.CommandType) + ": not yet applicable")
}
return nil
}