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87 lines
2.6 KiB
Go
87 lines
2.6 KiB
Go
package model
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import (
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"database/sql"
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"fmt"
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"strings"
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"github.com/tal-tech/go-zero/core/stores/cache"
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"github.com/tal-tech/go-zero/core/stores/sqlc"
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"github.com/tal-tech/go-zero/core/stores/sqlx"
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"github.com/tal-tech/go-zero/core/stringx"
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"github.com/tal-tech/go-zero/tools/goctl/model/sql/builderx"
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)
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var (
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shorturlFieldNames = builderx.FieldNames(&Shorturl{})
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shorturlRows = strings.Join(shorturlFieldNames, ",")
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shorturlRowsExpectAutoSet = strings.Join(stringx.Remove(shorturlFieldNames, "create_time", "update_time"), ",")
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shorturlRowsWithPlaceHolder = strings.Join(stringx.Remove(shorturlFieldNames, "shorten", "create_time", "update_time"), "=?,") + "=?"
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cacheShorturlShortenPrefix = "cache#Shorturl#shorten#"
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)
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type (
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ShorturlModel struct {
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sqlc.CachedConn
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table string
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}
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Shorturl struct {
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Shorten string `db:"shorten"` // shorten key
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Url string `db:"url"` // original url
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}
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)
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func NewShorturlModel(conn sqlx.SqlConn, c cache.CacheConf, table string) *ShorturlModel {
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return &ShorturlModel{
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CachedConn: sqlc.NewConn(conn, c),
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table: table,
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}
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}
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func (m *ShorturlModel) Insert(data Shorturl) (sql.Result, error) {
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query := `insert into ` + m.table + ` (` + shorturlRowsExpectAutoSet + `) values (?, ?)`
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return m.ExecNoCache(query, data.Shorten, data.Url)
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}
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func (m *ShorturlModel) FindOne(shorten string) (*Shorturl, error) {
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shorturlShortenKey := fmt.Sprintf("%s%v", cacheShorturlShortenPrefix, shorten)
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var resp Shorturl
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err := m.QueryRow(&resp, shorturlShortenKey, func(conn sqlx.SqlConn, v interface{}) error {
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query := `select ` + shorturlRows + ` from ` + m.table + ` where shorten = ? limit 1`
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return conn.QueryRow(v, query, shorten)
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})
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switch err {
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case nil:
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return &resp, nil
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case sqlc.ErrNotFound:
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return nil, ErrNotFound
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default:
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return nil, err
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}
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}
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func (m *ShorturlModel) Update(data Shorturl) error {
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shorturlShortenKey := fmt.Sprintf("%s%v", cacheShorturlShortenPrefix, data.Shorten)
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_, err := m.Exec(func(conn sqlx.SqlConn) (result sql.Result, err error) {
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query := `update ` + m.table + ` set ` + shorturlRowsWithPlaceHolder + ` where shorten = ?`
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return conn.Exec(query, data.Url, data.Shorten)
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}, shorturlShortenKey)
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return err
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}
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func (m *ShorturlModel) Delete(shorten string) error {
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_, err := m.FindOne(shorten)
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if err != nil {
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return err
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}
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shorturlShortenKey := fmt.Sprintf("%s%v", cacheShorturlShortenPrefix, shorten)
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_, err = m.Exec(func(conn sqlx.SqlConn) (result sql.Result, err error) {
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query := `delete from ` + m.table + ` where shorten = ?`
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return conn.Exec(query, shorten)
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}, shorturlShortenKey)
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return err
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}
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