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74 lines
2.1 KiB
74 lines
2.1 KiB
// Copyright © 2023 OpenIM. All rights reserved.
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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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package ormutil
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import (
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"fmt"
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"strings"
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"gorm.io/gorm"
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"github.com/OpenIMSDK/Open-IM-Server/pkg/errs"
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)
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func GormPage[E any](db *gorm.DB, pageNumber, showNumber int32) (uint32, []*E, error) {
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var count int64
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var model E
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if err := db.Model(&model).Count(&count).Error; err != nil {
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return 0, nil, errs.Wrap(err)
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}
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var es []*E
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if err := db.Limit(int(showNumber)).Offset(int((pageNumber - 1) * showNumber)).Find(&es).Error; err != nil {
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return 0, nil, errs.Wrap(err)
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}
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return uint32(count), es, nil
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}
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func GormSearch[E any](db *gorm.DB, fields []string, value string, pageNumber, showNumber int32) (uint32, []*E, error) {
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if len(fields) > 0 && value != "" {
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val := "%" + value + "%"
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arr := make([]string, 0, len(fields))
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vals := make([]interface{}, 0, len(fields))
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for _, field := range fields {
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arr = append(arr, fmt.Sprintf("`%s` like ?", field))
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vals = append(vals, val)
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}
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db = db.Where(strings.Join(arr, " or "), vals...)
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}
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return GormPage[E](db, pageNumber, showNumber)
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}
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func GormIn[E any](db **gorm.DB, field string, es []E) {
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if len(es) == 0 {
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return
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}
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*db = (*db).Where(field+" in (?)", es)
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}
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func MapCount(db *gorm.DB, field string) (map[string]uint32, error) {
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var items []struct {
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ID string `gorm:"column:id"`
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Count uint32 `gorm:"column:count"`
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}
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if err := db.Select(field + " as id, count(1) as count").Group(field).Find(&items).Error; err != nil {
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return nil, errs.Wrap(err)
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}
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m := make(map[string]uint32)
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for _, item := range items {
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m[item.ID] = item.Count
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}
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return m, nil
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}
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