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101 lines
2.9 KiB
Go
101 lines
2.9 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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bookFieldNames = builderx.FieldNames(&Book{})
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bookRows = strings.Join(bookFieldNames, ",")
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bookRowsExpectAutoSet = strings.Join(stringx.Remove(bookFieldNames, "create_time", "update_time"), ",")
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bookRowsWithPlaceHolder = strings.Join(stringx.Remove(bookFieldNames, "book", "create_time", "update_time"), "=?,") + "=?"
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cacheBookPrefix = "cache#Book#book#"
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)
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type (
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BookModel interface {
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Insert(data Book) (sql.Result, error)
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FindOne(book string) (*Book, error)
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Update(data Book) error
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Delete(book string) error
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}
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defaultBookModel struct {
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sqlc.CachedConn
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table string
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}
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Book struct {
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Book string `db:"book"` // book name
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Price int64 `db:"price"` // book price
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}
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)
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func NewBookModel(conn sqlx.SqlConn, c cache.CacheConf) BookModel {
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return &defaultBookModel{
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CachedConn: sqlc.NewConn(conn, c),
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table: "book",
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}
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}
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func (m *defaultBookModel) Insert(data Book) (sql.Result, error) {
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query := fmt.Sprintf("insert into %s (%s) values (?, ?)", m.table, bookRowsExpectAutoSet)
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ret, err := m.ExecNoCache(query, data.Book, data.Price)
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return ret, err
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}
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func (m *defaultBookModel) FindOne(book string) (*Book, error) {
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bookKey := fmt.Sprintf("%s%v", cacheBookPrefix, book)
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var resp Book
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err := m.QueryRow(&resp, bookKey, func(conn sqlx.SqlConn, v interface{}) error {
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query := fmt.Sprintf("select %s from %s where book = ? limit 1", bookRows, m.table)
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return conn.QueryRow(v, query, book)
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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 *defaultBookModel) Update(data Book) error {
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bookKey := fmt.Sprintf("%s%v", cacheBookPrefix, data.Book)
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_, err := m.Exec(func(conn sqlx.SqlConn) (result sql.Result, err error) {
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query := fmt.Sprintf("update %s set %s where book = ?", m.table, bookRowsWithPlaceHolder)
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return conn.Exec(query, data.Price, data.Book)
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}, bookKey)
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return err
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}
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func (m *defaultBookModel) Delete(book string) error {
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bookKey := fmt.Sprintf("%s%v", cacheBookPrefix, book)
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_, err := m.Exec(func(conn sqlx.SqlConn) (result sql.Result, err error) {
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query := fmt.Sprintf("delete from %s where book = ?", m.table)
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return conn.Exec(query, book)
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}, bookKey)
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return err
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}
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func (m *defaultBookModel) formatPrimary(primary interface{}) string {
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return fmt.Sprintf("%s%v", cacheBookPrefix, primary)
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}
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func (m *defaultBookModel) queryPrimary(conn sqlx.SqlConn, v, primary interface{}) error {
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query := fmt.Sprintf("select %s from %s where book = ? limit 1", bookRows, m.table)
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return conn.QueryRow(v, query, primary)
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}
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