94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
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/*
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* Copyright (c) 2020 Alex aka mailoman <alex@webz.asia>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @author Alex aka mailoman <alex@webz.asia>
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* @copyright Copyright (c) 2020 Alex aka mailoman <alex@webz.asia>
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* @since 14.01.2020
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*
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*/
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package main
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import (
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"encoding/json"
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"log"
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"github.com/go-convert/fields"
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)
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type fromStructCustom struct {
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ID string `copy:"new,update"`
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Field1 string `copy:"new,update"`
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Field2 string `copy:"update"`
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Field3 string `copy:"category-1,ignore"`
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Field4 string `copy:"category-1,noempty"`
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}
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type toStruct struct {
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ID string
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Field1 string
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Field2 string
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Field3 string
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Field4 string
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}
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func main() {
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fields.SetTagName("copy")
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fields.SetOmitTagName("ignore")
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fields.SetOmitEmptyTagName("noempty")
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log.Print("example 2.1 - new")
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from := fromStructCustom{
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"1", "field 1 value", "field 2 value", "omitting", "not empty",
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}
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to := toStruct{
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"old val 1", "old field 1 value", "old field 2 value", "old field 3 value", "old field 4 value",
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}
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fields.Сonvert(from, "new", &to)
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fromB, _ := json.Marshal(from)
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toB, _ := json.Marshal(to)
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log.Printf("from %s => to %s", string(fromB), string(toB))
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log.Print("example 2.2.1 - category-1")
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from = fromStructCustom{
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"1", "field 1 value", "field 2 value", "omitting", "not empty",
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}
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to = toStruct{
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"old val 1", "old field 1 value", "old field 2 value", "old field 3 value", "old field 4 value",
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}
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fields.Сonvert(from, "category-1", &to)
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fromB, _ = json.Marshal(from)
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toB, _ = json.Marshal(to)
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log.Printf("from %s => to %s", string(fromB), string(toB))
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log.Print("example 2.2.2 - category-1")
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from = fromStructCustom{
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"1", "field 1 value", "field 2 value", "omitting", "",
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}
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to = toStruct{
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"old val 1", "old field 1 value", "old field 2 value", "old field 3 value", "old field 4 value",
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}
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fields.Сonvert(from, "category-1", &to)
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fromB, _ = json.Marshal(from)
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toB, _ = json.Marshal(to)
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log.Printf("from %s => to %s", string(fromB), string(toB))
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}
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