/
skeleton.go
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/
skeleton.go
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/*
* Copyright 2019 InfAI (CC SES)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package mapping
import (
"errors"
"github.com/SENERGY-Platform/marshaller/lib/marshaller/model"
"reflect"
"strconv"
)
func CharacteristicToSkeleton(characteristic model.Characteristic) (out *interface{}, idToPtr map[string]*interface{}, err error) {
idToPtr = map[string]*interface{}{}
var t interface{}
out = &t
err = categoryToSkeleton(characteristic, out, &idToPtr)
return
}
const VAR_LEN_PLACEHOLDER = "*"
func categoryToSkeleton(characteristic model.Characteristic, out *interface{}, idToPtr *map[string]*interface{}) (err error) {
switch characteristic.Type {
case model.Float, model.Integer:
if characteristic.Value != nil {
var ok bool
*out, ok = characteristic.Value.(float64)
if !ok {
return errors.New("unable to interpret value in " + characteristic.Id)
}
} else {
*out = float64(0)
}
(*idToPtr)[characteristic.Id] = out
case model.String:
if characteristic.Value != nil {
var ok bool
*out, ok = characteristic.Value.(string)
if !ok {
return errors.New("unable to interpret value in " + characteristic.Id)
}
} else {
*out = ""
}
(*idToPtr)[characteristic.Id] = out
case model.Boolean:
if characteristic.Value != nil {
var ok bool
*out, ok = characteristic.Value.(bool)
if !ok {
return errors.New("unable to interpret value in " + characteristic.Id)
}
} else {
*out = false
}
(*idToPtr)[characteristic.Id] = out
case model.Structure:
if len(characteristic.SubCharacteristics) == 1 && characteristic.SubCharacteristics[0].Name == VAR_LEN_PLACEHOLDER {
*out = map[string]interface{}{}
(*idToPtr)[characteristic.Id] = out
} else {
*out = map[string]interface{}{}
for _, sub := range characteristic.SubCharacteristics {
var subvar interface{}
err = categoryToSkeleton(sub, &subvar, idToPtr)
if err != nil {
return err
}
(*out).(map[string]interface{})[sub.Name] = &subvar
}
}
case model.List:
if len(characteristic.SubCharacteristics) == 1 && characteristic.SubCharacteristics[0].Name == VAR_LEN_PLACEHOLDER {
*out = []interface{}{}
(*idToPtr)[characteristic.Id] = out
} else {
*out = make([]interface{}, len(characteristic.SubCharacteristics))
for _, sub := range characteristic.SubCharacteristics {
var subvar interface{}
err = categoryToSkeleton(sub, &subvar, idToPtr)
if err != nil {
return err
}
index, err := strconv.Atoi(sub.Name)
if err != nil {
return errors.New("unable to interpret '" + sub.Name + "' as index for list: " + err.Error())
}
(*out).([]interface{})[index] = &subvar
}
}
default:
return errors.New("unknown variable type: " + string(characteristic.Type))
}
return nil
}
func ContentToSkeleton(content model.ContentVariable, partial Partial) (out *interface{}, idToPtr map[string][]*interface{}, err error) {
idToPtr = map[string][]*interface{}{}
if partial == nil {
partial = NewPartial()
}
err = contentToSkeleton(content, partial, &idToPtr)
out = partial.Value
return
}
func contentToSkeleton(content model.ContentVariable, partial Partial, idToPtr *map[string][]*interface{}) (err error) {
if partial == nil {
partial = NewPartial()
}
var temp interface{}
switch content.Type {
case model.Float, model.Integer:
if partial.Value == nil {
if content.Value != nil {
var ok bool
temp, ok = content.Value.(float64)
if !ok {
return errors.New("unable to interpret value in " + content.Id)
}
} else {
temp = float64(0)
}
partial.Value = &temp
}
(*idToPtr)[content.CharacteristicId] = append((*idToPtr)[content.CharacteristicId], partial.Value)
case model.String:
if partial.Value == nil {
if content.Value != nil {
var ok bool
temp, ok = content.Value.(string)
if !ok {
return errors.New("unable to interpret value in " + content.Id)
}
} else {
temp = ""
}
partial.Value = &temp
}
(*idToPtr)[content.CharacteristicId] = append((*idToPtr)[content.CharacteristicId], partial.Value)
case model.Boolean:
if partial.Value == nil || reflect.TypeOf(partial.Value).Kind() != reflect.Bool {
if content.Value != nil {
var ok bool
temp, ok = content.Value.(bool)
if !ok {
return errors.New("unable to interpret value in " + content.Id)
}
} else {
temp = false
}
}
partial.Value = &temp
(*idToPtr)[content.CharacteristicId] = append((*idToPtr)[content.CharacteristicId], partial.Value)
case model.Structure:
if len(content.SubContentVariables) == 1 && content.SubContentVariables[0].Name == VAR_LEN_PLACEHOLDER {
if partial.Value == nil || *partial.Value == nil {
temp = map[string]*interface{}{}
partial.Value = &temp
}
(*idToPtr)[content.CharacteristicId] = append((*idToPtr)[content.CharacteristicId], partial.Value)
} else {
if partial.Value == nil {
temp = map[string]*interface{}{}
partial.Value = &temp
}
for _, sub := range content.SubContentVariables {
subvar := NewPartial()
ok := true
subvar.Value, ok = (*partial.Value).(map[string]*interface{})[sub.Name]
err = contentToSkeleton(sub, subvar, idToPtr)
if err != nil {
return err
}
if !ok {
(*partial.Value).(map[string]*interface{})[sub.Name] = subvar.Value
}
}
}
case model.List:
if len(content.SubContentVariables) == 1 && content.SubContentVariables[0].Name == VAR_LEN_PLACEHOLDER {
if partial.Value == nil || *partial.Value == nil {
temp = []*interface{}{}
partial.Value = &temp
}
(*idToPtr)[content.CharacteristicId] = append((*idToPtr)[content.CharacteristicId], partial.Value)
} else {
if partial.Value == nil {
temp = make([]*interface{}, len(content.SubContentVariables))
partial.Value = &temp
}
for _, sub := range content.SubContentVariables {
subvar := NewPartial()
index, err := strconv.Atoi(sub.Name)
if err != nil {
return errors.New("unable to interpret '" + sub.Name + "' as index for list: " + err.Error())
}
subvar.Value = (*partial.Value).([]*interface{})[index]
ok := subvar.Value != nil
err = contentToSkeleton(sub, subvar, idToPtr)
if err != nil {
return err
}
if !ok {
(*partial.Value).([]*interface{})[index] = subvar.Value
}
}
}
default:
return errors.New("unknown variable type: " + string(content.Type))
}
return nil
}