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util.go
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util.go
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package gosql
import (
"reflect"
"sort"
"time"
)
//inSlice
func inSlice(k string, s []string) bool {
for _, v := range s {
if k == v {
return true
}
}
return false
}
//zeroValueFilter filter zero value and keep the specified zero value
func zeroValueFilter(fields map[string]reflect.Value, zv []string) map[string]interface{} {
m := make(map[string]interface{})
for k, v := range fields {
v = reflect.Indirect(v)
if v.IsValid() && !inSlice(k, zv) {
t, ok := v.Interface().(time.Time)
if ok && t.IsZero() {
continue
}
switch v.Interface().(type) {
case int, int8, int16, int32, int64:
c := v.Int()
if c != 0 {
m[k] = c
}
case uint, uint8, uint16, uint32, uint64:
c := v.Uint()
if c != 0 {
m[k] = c
}
case float32, float64:
c := v.Float()
if c != 0.0 {
m[k] = c
}
case bool:
c := v.Bool()
if c != false {
m[k] = c
}
case string:
c := v.String()
if c != "" {
m[k] = c
}
default:
m[k] = v.Interface()
}
} else {
m[k] = v.Interface()
}
}
return m
}
// structAutoTime auto set created_at updated_at
func structAutoTime(fields map[string]reflect.Value, f []string) {
for k, v := range fields {
v = reflect.Indirect(v)
if v.IsValid() && inSlice(k, f) {
switch v.Type().Kind() {
case reflect.String:
v.SetString(time.Now().Format("2006-01-02 15:04:05"))
case reflect.Struct:
v.Set(reflect.ValueOf(time.Now()))
}
}
}
}
// structToMap
func structToMap(fields map[string]reflect.Value) map[string]interface{} {
m := make(map[string]interface{})
for k, v := range fields {
v = reflect.Indirect(v)
m[k] = v.Interface()
}
return m
}
// sortedParamKeys Sorts the param names given - map iteration order is explicitly random in Go
// but we need params in a defined order to avoid unexpected results.
func sortedParamKeys(params map[string]interface{}) []string {
sortedKeys := make([]string, len(params))
i := 0
for k := range params {
sortedKeys[i] = k
i++
}
sort.Strings(sortedKeys)
return sortedKeys
}